DPPStaticBundle: update DPP to 10.1.3 and OpenSSL to 3.0.17

- remove potential DPP AVX dependency

.gitattributes

@@ -0,0 +1,16 @@
+* text=auto eol=lf
+
+# Configuration files
+*.json text eol=crlf
+
+# Development files
+CMakeLists.txt text eol=lf
+*.cmake text eol=lf
+*.cpp text eol=lf
+*.h text eol=lf
+
+# BSD and Linux development files
+*.pc.in text eol=lf
+
+# Windows development files
+*.rc.in text encoding=cp1252 eol=crlf

.github/workflows/linux-rpm.yml

@@ -0,0 +1,45 @@
+name: Linux
+on: push
+jobs:
+  Release:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - name: Enterprise Linux 7
+            version: el7
+          - name: Enterprise Linux 8
+            version: el8
+          - name: Enterprise Linux 9
+            version: el9
+          - name: openSUSE Leap 15.5
+            version: lp155
+    steps:
+    - name: Cloning
+      uses: actions/checkout@v4
+    - name: Preparing
+      run: mkdir -m 777 ${{github.workspace}}/rpms
+    - name: Build RPM
+      uses: addnab/docker-run-action@v3
+      with:
+        image: docker.io/syping/dtranslatebot-build:${{matrix.version}}
+        options: -v ${{github.workspace}}:/home/rpmbuild/dtranslatebot -v ${{github.workspace}}/rpms:/home/rpmbuild/rpmbuild/RPMS
+        run: |
+          VERSION=$(cat dtranslatebot/CMakeLists.txt | grep -oP "project\(dtranslatebot VERSION \K(\S*)(?= LANGUAGES CXX\))")
+          mkdir -p dtranslatebot-$VERSION
+          shopt -s extglob
+          cp -R dtranslatebot/!(rpms|rpmsrc) \
+            dtranslatebot-$VERSION
+          tar cfz dtranslatebot-$VERSION.tar.gz dtranslatebot-$VERSION
+          cp dtranslatebot-$VERSION.tar.gz \
+            dtranslatebot/rpmsrc/!(*.spec) \
+            rpmbuild/SOURCES
+          cp dtranslatebot/rpmsrc/*.spec \
+            rpmbuild/SPECS
+          rpmbuild -ba rpmbuild/SPECS/dtranslatebot.spec
+    - name: Upload
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{matrix.name}}
+        path: |
+          ${{github.workspace}}/rpms/x86_64/*.rpm

.github/workflows/windows.yml

@@ -0,0 +1,43 @@
+name: Windows
+on: push
+jobs:
+  Release:
+    runs-on: windows-latest
+    env:
+      BUILD_TYPE: Release
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+    - name: Setup MSYS2
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: clang64
+        update: true
+        install: >-
+          git
+          make
+          mingw-w64-clang-x86_64-clang
+          mingw-w64-clang-x86_64-cmake
+          mingw-w64-clang-x86_64-ninja
+          perl
+    - name: Cloning
+      uses: actions/checkout@v4
+    - name: Configure CMake
+      run: cmake -B dtranslatebot-build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_EXE_LINKER_FLAGS="-static -lc++" -DWITH_DPP_STATIC_BUNDLE=TRUE -GNinja
+    - name: Download and build OpenSSL
+      run: cmake --build dtranslatebot-build --config ${{env.BUILD_TYPE}} --target OpenSSL
+    - name: Download and build zlib
+      run: cmake --build dtranslatebot-build --config ${{env.BUILD_TYPE}} --target ZLIB
+    - name: Download and build DPP
+      run: cmake --build dtranslatebot-build --config ${{env.BUILD_TYPE}} --target DPP
+    - name: Build dtranslatebot
+      run: cmake --build dtranslatebot-build --config ${{env.BUILD_TYPE}}
+    - name: Install
+      run: cmake --install dtranslatebot-build --config ${{env.BUILD_TYPE}} --prefix dtranslatebot-install --strip
+    - name: Upload
+      uses: actions/upload-artifact@v4
+      with:
+        name: Windows
+        path: |
+          dtranslatebot-install/bin/dtranslatebot.exe

CMakeLists.txt

@@ -17,34 +17,43 @@
 ****************************************************************************]]
 
 cmake_minimum_required(VERSION 3.16)
-project(dtranslatebot VERSION 0.1 LANGUAGES CXX)
+cmake_policy(VERSION 3.16...3.27)
+project(dtranslatebot VERSION 0.2.0 LANGUAGES CXX)
 include(GNUInstallDirs)
 
 # dtranslatebot Source files
 set(DTRANSLATEBOT_HEADERS
-    src/database_core.h
-    src/database_file.h
-    src/message_queue.h
-    src/regex.h
-    src/settings.h
-    src/settings_types.h
-    src/slashcommands.h
-    src/submit_queue.h
-    src/translator_core.h
-    src/translator_libretranslate.h
-    src/webhook_push.h
+    src/core/database.h
+    src/core/message_queue.h
+    src/core/regex.h
+    src/core/settings.h
+    src/core/settings_types.h
+    src/core/slashcommands.h
+    src/core/submit_queue.h
+    src/core/translator.h
+    src/core/webhook_push.h
+    src/database/file/file.h
+    src/translator/deepl/deepl.h
+    src/translator/mozhi/mozhi.h
+    src/translator/libretranslate/libretranslate.h
+    src/translator/lingvatranslate/lingvatranslate.h
+    src/translator/stub/stub.h
 )
 set(DTRANSLATEBOT_SOURCES
-    src/database_core.cpp
-    src/database_file.cpp
-    src/main.cpp
-    src/message_queue.cpp
-    src/settings.cpp
-    src/slashcommands.cpp
-    src/submit_queue.cpp
-    src/translator_core.cpp
-    src/translator_libretranslate.cpp
-    src/webhook_push.cpp
+    src/core/database.cpp
+    src/core/main.cpp
+    src/core/message_queue.cpp
+    src/core/settings.cpp
+    src/core/slashcommands.cpp
+    src/core/submit_queue.cpp
+    src/core/translator.cpp
+    src/core/webhook_push.cpp
+    src/database/file/file.cpp
+    src/translator/deepl/deepl.cpp
+    src/translator/mozhi/mozhi.cpp
+    src/translator/libretranslate/libretranslate.cpp
+    src/translator/lingvatranslate/lingvatranslate.cpp
+    src/translator/stub/stub.cpp
 )
 
 # dtranslatebot Module Path
@@ -63,21 +72,59 @@ if (WITH_BOOST)
 endif()
 
 # D++ Discord API Library for Bots
-find_package(DPP REQUIRED)
+option(WITH_DPP_STATIC_BUNDLE "Build with DPP Static Bundle" OFF)
+if (WITH_DPP_STATIC_BUNDLE)
+    include(DPPStaticBundle)
+else()
+    find_package(DPP REQUIRED)
+endif()
 
 # pthread Support
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
+# dtranslatebot Win32 Shared Resources
+if (WIN32)
+    configure_file(src/resources/win32/dtranslatebot.rc.in "${dtranslatebot_BINARY_DIR}/resources/win32/dtranslatebot.rc" @ONLY)
+    list(APPEND DTRANSLATEBOT_RESOURCES
+        "${dtranslatebot_BINARY_DIR}/resources/win32/dtranslatebot.rc"
+    )
+endif()
+
+# dtranslatebot systemd Service
+if (UNIX AND NOT APPLE)
+    option(WITH_SYSTEMD "Build with systemd Support" OFF)
+    if (WITH_SYSTEMD)
+        find_program(SYSTEMD_ESCAPE_EXECUTABLE NAMES systemd-escape)
+        if (DEFINED SYSTEMD_ESCAPE_EXECUTABLE)
+            execute_process(
+                COMMAND "${SYSTEMD_ESCAPE_EXECUTABLE}" "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/lib/dtranslatebot"
+                OUTPUT_VARIABLE dtranslatebot_SERVICE_WORKDIR
+            )
+            string(STRIP "${dtranslatebot_SERVICE_WORKDIR}" dtranslatebot_SERVICE_WORKDIR)
+        else()
+            set(dtranslatebot_SERVICE_WORKDIR "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/lib/dtranslatebot")
+        endif()
+        configure_file(src/systemd/dtranslatebot.service.in "${dtranslatebot_BINARY_DIR}/systemd/service/dtranslatebot.service" @ONLY)
+        configure_file(src/systemd/dtranslatebot.sysusersd.in "${dtranslatebot_BINARY_DIR}/systemd/sysusers.d/dtranslatebot.conf" @ONLY)
+        install(FILES "${dtranslatebot_BINARY_DIR}/systemd/service/dtranslatebot.service" DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/systemd/system")
+        install(FILES "${dtranslatebot_BINARY_DIR}/systemd/sysusers.d/dtranslatebot.conf" DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/sysusers.d")
+    endif()
+endif()
+
 # dtranslatebot Target + Installs
-add_executable(dtranslatebot ${DTRANSLATEBOT_HEADERS} ${DTRANSLATEBOT_SOURCES})
+add_executable(dtranslatebot ${DTRANSLATEBOT_HEADERS} ${DTRANSLATEBOT_SOURCES} ${DTRANSLATEBOT_RESOURCES})
+if (WITH_DPP_STATIC_BUNDLE)
+    add_dependencies(dtranslatebot DPP)
+endif()
 target_compile_definitions(dtranslatebot PRIVATE
+    ${DPP_DEFINITIONS}
     $<$<BOOL:${DTRANSLATEBOT_USE_BOOST_REGEX}>:DTRANSLATEBOT_USE_BOOST_REGEX>
 )
 if (MSVC AND MSVC_VERSION GREATER_EQUAL 1914)
     target_compile_options(dtranslatebot PRIVATE $<$<COMPILE_LANGUAGE:CXX>:/Zc:__cplusplus>)
 endif()
-target_link_libraries(dtranslatebot PRIVATE Threads::Threads ${DPP_LIBRARIES} ${DTRANSLATEBOT_LIBRARIES})
+target_link_libraries(dtranslatebot PRIVATE ${DTRANSLATEBOT_LIBRARIES} ${DPP_LIBRARIES} Threads::Threads)
 target_include_directories(dtranslatebot PRIVATE ${DPP_INCLUDE_DIR})
 set_target_properties(dtranslatebot PROPERTIES
     CXX_STANDARD 17

README.md

@@ -2,7 +2,7 @@
 Open Source Discord Translation Bot
 
 - Translate incoming channel messages to a Webhook
-- Support configuration through slashcommands and JSON
+- Support configuration through slash commands and JSON
 - Cross-Platform
 
 #### Build Dependencies
@@ -10,8 +10,11 @@ Open Source Discord Translation Bot
 - Compiler with C++17 Support
 - [D++: A C++ Discord API Library for Bots](https://dpp.dev/)
 
-#### Runtime Dependencies
-- [LibreTranslate](https://libretranslate.com/)
+#### Supported Translation Engines
+- [LibreTranslate](https://libretranslate.com/) (Default)
+- [Lingva Translate](https://lingva.ml/)
+- [Mozhi](https://codeberg.org/aryak/mozhi)
+- [DeepL](https://deepl.com/) (Experimental)
 
 #### Build dtranslatebot
 
@@ -23,4 +26,6 @@ sudo cmake --install dtranslatebot-build
 ```
 
 ##### Optional CMake flags
-`-DWITH_BOOST=TRUE`
+`-DWITH_BOOST=TRUE`  
+`-DWITH_DPP_STATIC_BUNDLE=TRUE`  
+`-DWITH_SYSTEMD=TRUE`

cmake/ArgumentPassthrough.cmake

@@ -0,0 +1,65 @@
+#[[**************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+****************************************************************************]]
+
+if (DEFINED CMAKE_BUILD_TYPE)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}")
+endif()
+if (DEFINED CMAKE_C_COMPILER)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}")
+    list(APPEND CMAKE_PASSTHROUGH_ENV "CC=${CMAKE_C_COMPILER}")
+elseif ("$ENV{MSYSTEM}" STREQUAL "CLANG64")
+    list(APPEND CMAKE_PASSTHROUGH_ENV "CC=clang")
+endif()
+if (DEFINED CMAKE_C_COMPILER_TARGET)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_C_COMPILER_TARGET=${CMAKE_C_COMPILER_TARGET}")
+endif()
+if (DEFINED CMAKE_CXX_COMPILER)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}")
+    list(APPEND CMAKE_PASSTHROUGH_ENV "CXX=${CMAKE_CXX_COMPILER}")
+elseif ("$ENV{MSYSTEM}" STREQUAL "CLANG64")
+    list(APPEND CMAKE_PASSTHROUGH_ENV "CXX=clang++")
+endif()
+if (DEFINED CMAKE_CXX_COMPILER_TARGET)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_CXX_COMPILER_TARGET=${CMAKE_CXX_COMPILER_TARGET}")
+endif()
+if (DEFINED CMAKE_RC_COMPILER)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_RC_COMPILER=${CMAKE_RC_COMPILER}")
+endif()
+if (DEFINED CMAKE_STRIP)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_STRIP=${CMAKE_STRIP}")
+endif()
+if (DEFINED CMAKE_SYSROOT)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_SYSROOT=${CMAKE_SYSROOT}")
+endif()
+if (DEFINED CMAKE_SYSTEM_NAME AND NOT CMAKE_SYSTEM_NAME STREQUAL CMAKE_HOST_SYSTEM_NAME)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME}")
+endif()
+if (DEFINED CMAKE_SYSTEM_PROCESSOR AND NOT CMAKE_SYSTEM_PROCESSOR STREQUAL CMAKE_HOST_SYSTEM_PROCESSOR)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}")
+endif()
+if (DEFINED CMAKE_SYSTEM_VERSION AND NOT CMAKE_SYSTEM_VERSION STREQUAL CMAKE_HOST_SYSTEM_VERSION)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_SYSTEM_VERSION=${CMAKE_SYSTEM_VERSION}")
+endif()
+if (DEFINED CMAKE_TOOLCHAIN_FILE)
+    list(APPEND CMAKE_PASSTHROUGH_ARGS "-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}")
+endif()
+if (DEFINED CMAKE_PASSTHROUGH_ENV)
+    set(CMAKE_PASSTHROUGH_ENV
+        "${CMAKE_COMMAND}" -E env ${CMAKE_PASSTHROUGH_ENV}
+    )
+endif()

cmake/DPPStaticBundle.cmake

@@ -0,0 +1,119 @@
+#[[**************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+****************************************************************************]]
+
+include(ArgumentPassthrough)
+
+# OpenSSL needs to be configured with perl and build with make
+find_program(MAKE_EXECUTABLE NAMES make gmake)
+if (NOT DEFINED MAKE_EXECUTABLE)
+    message(SEND_ERROR "make not found")
+endif()
+
+find_program(NPROC_EXECUTABLE nproc)
+if (DEFINED NPROC_EXECUTABLE)
+    execute_process(
+        COMMAND "${NPROC_EXECUTABLE}"
+        OUTPUT_VARIABLE NPROC
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    set(MAKE_JOBS_ARG "-j${NPROC}")
+endif()
+
+find_program(PERL_EXECUTABLE NAMES perl)
+if (NOT DEFINED PERL_EXECUTABLE)
+    message(SEND_ERROR "perl not found")
+endif()
+
+include(ExternalProject)
+ExternalProject_Add(ZLIB
+    URL https://www.zlib.net/zlib-1.3.1.tar.xz
+    URL_HASH SHA256=38ef96b8dfe510d42707d9c781877914792541133e1870841463bfa73f883e32
+    CMAKE_ARGS
+        -DBUILD_SHARED_LIBS=OFF
+        ${CMAKE_PASSTHROUGH_ARGS}
+        "-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>"
+        -DZLIB_BUILD_EXAMPLES=OFF
+        ${ZLIB_CONFIGURE_ARGS}
+)
+ExternalProject_Get_Property(ZLIB INSTALL_DIR)
+set(ZLIB_INSTALL_DIR "${INSTALL_DIR}")
+
+set(OPENSSL_PLATFORM_ARG $<$<BOOL:$ENV{MSYSTEM}>:mingw64>)
+ExternalProject_Add(OpenSSL
+    URL https://github.com/openssl/openssl/releases/download/openssl-3.0.17/openssl-3.0.17.tar.gz
+    URL_HASH SHA256=dfdd77e4ea1b57ff3a6dbde6b0bdc3f31db5ac99e7fdd4eaf9e1fbb6ec2db8ce
+    CONFIGURE_COMMAND
+        ${CMAKE_PASSTHROUGH_ENV}
+        "${PERL_EXECUTABLE}"
+        "<SOURCE_DIR>/Configure"
+        "--prefix=<INSTALL_DIR>"
+        $<$<CONFIG:Debug>:-d>
+        no-dso
+        no-dtls
+        no-engine
+        no-shared
+        no-zlib
+        ${OPENSSL_PLATFORM_ARG}
+        ${OPENSSL_CONFIGURE_ARGS}
+    BUILD_COMMAND "${MAKE_EXECUTABLE}" ${MAKE_JOBS_ARG} build_libs
+    INSTALL_COMMAND "${MAKE_EXECUTABLE}" ${MAKE_JOBS_ARG} install_dev
+)
+ExternalProject_Get_Property(OpenSSL INSTALL_DIR)
+set(OpenSSL_INSTALL_DIR "${INSTALL_DIR}")
+
+ExternalProject_Add(DPP
+    URL https://github.com/brainboxdotcc/DPP/archive/refs/tags/v10.1.3.tar.gz
+    URL_HASH SHA256=a32d94dcd6b23430afff82918234e4e28e0616bd2ddf743c5ab2f1778c5a600b
+    CMAKE_ARGS
+        -DAVX_TYPE=AVX0
+        -DBUILD_SHARED_LIBS=OFF
+        -DBUILD_VOICE_SUPPORT=OFF
+        ${CMAKE_PASSTHROUGH_ARGS}
+        "-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>"
+        -DDPP_BUILD_TEST=OFF
+        -DDPP_NO_CORO=ON
+        -DDPP_NO_VCPKG=ON
+        -DRUN_LDCONFIG=OFF
+        "-DOpenSSL_ROOT=${OpenSSL_INSTALL_DIR}"
+        "-DZLIB_ROOT=${ZLIB_INSTALL_DIR}"
+        ${DPP_CONFIGURE_ARGS}
+    DEPENDS OpenSSL ZLIB
+)
+ExternalProject_Get_Property(DPP INSTALL_DIR)
+set(DPP_INSTALL_DIR "${INSTALL_DIR}")
+set(DPP_INCLUDE_DIR "${DPP_INSTALL_DIR}/include")
+set(DPP_LIBRARIES
+    -Wl,-Bstatic
+    "-L${DPP_INSTALL_DIR}/lib"
+    "-L${DPP_INSTALL_DIR}/lib64"
+    dpp
+    "-L${OpenSSL_INSTALL_DIR}/lib"
+    "-L${OpenSSL_INSTALL_DIR}/lib64"
+    ssl
+    crypto
+    "-L${ZLIB_INSTALL_DIR}/lib"
+    "-L${ZLIB_INSTALL_DIR}/lib64"
+    $<IF:$<BOOL:${WIN32}>,zlibstatic,z>
+    -Wl,-Bdynamic
+)
+if (WIN32)
+    set(DPP_DEFINITIONS DPP_STATIC)
+    list(APPEND DPP_LIBRARIES
+        ws2_32
+    )
+endif()

cmake/FindDPP.cmake

@@ -1,4 +1,4 @@
-find_path(DPP_INCLUDE_DIR NAMES dpp/dpp.h HINTS ${DPP_ROOT_DIR})
-find_library(DPP_LIBRARIES NAMES dpp "libdpp.a" HINTS ${DPP_ROOT_DIR})
+find_path(DPP_INCLUDE_DIR NAMES "dpp/dpp.h" HINTS "${DPP_ROOT_DIR}")
+find_library(DPP_LIBRARIES NAMES "dpp" "libdpp.a" HINTS "${DPP_ROOT_DIR}")
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(DPP DEFAULT_MSG DPP_LIBRARIES DPP_INCLUDE_DIR)

etc/dtranslatebot.example.json

@@ -1,37 +0,0 @@
-{
-    "guilds": {
-        "$guild1_id": {
-            "$channel1_id": {
-                "source": "en",
-                "target": "de",
-                "webhook": "https://discord.com/api/webhooks/$guild1_de_webhook_id/$guild1_de_webhook_token"
-            },
-            "$channel2_id": {
-                "source": "de",
-                "target": "en",
-                "webhook": "https://discord.com/api/webhooks/$guild1_en_webhook_id/$guild1_en_webhook_token"
-            }
-        },
-        "My Discord Guild": {
-            "id": $guild2_id,
-            "General English": {
-                "id": $channel3_id,
-                "source": "en",
-                "target": {
-                    "de": "https://discord.com/api/webhooks/$guild2_de_webhook_id/$guild2_de_webhook_token",
-                    "fr": "https://discord.com/api/webhooks/$guild2_fr_webhook_id/$guild2_fr_webhook_token"
-                }
-            }
-        }
-    },
-    "preferred_lang": ["en", "de", "fr", ...],
-    "storage": "$working_directory",
-    "user": {
-        "avatar_size": 256
-    },
-    "token": "$bot_token",
-    "translator": {
-        "url": "http://127.0.0.1:5000/",
-        "apiKey": ""
-    }
-}

etc/dtranslatebot.json

@@ -1,7 +0,0 @@
-{
-    "token": "",
-    "translator": {
-        "url": "http://127.0.0.1:5000/",
-        "apiKey": ""
-    }
-}

rpmsrc/dtranslatebot.json

@@ -0,0 +1,14 @@
+{
+    /*
+      A DISCORD BOT TOKEN IS NECESSARY TO USE THIS APPLICATION!
+
+      You can get a Bot Token from the Discord Developer Portal
+      by creating a New Application:
+      https://discord.com/developers/applications
+    */
+
+    "token": "",
+    "translator": {
+        "type": "stub"
+    }
+}

rpmsrc/dtranslatebot.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Discord Translation Bot
+After=network.target
+
+[Service]
+User=dtranslatebot
+Group=dtranslatebot
+WorkingDirectory=/var/lib/dtranslatebot
+ExecStart=/usr/bin/dtranslatebot /etc/dtranslatebot.json
+Restart=on-abnormal
+
+[Install]
+WantedBy=multi-user.target

rpmsrc/dtranslatebot.spec

@@ -0,0 +1,96 @@
+%global         _lto_cflags %{?_lto_cflags} -ffat-lto-objects
+
+%if 0%{?rhel} && 0%{?rhel} < 8
+%global         cmake %{?cmake3}
+%global         cmake_build %{?cmake3_build}
+%global         cmake_install %{?cmake3_install}
+%global         cmake_suffix 3
+%global         toolset_prefix devtoolset-9-
+%endif
+%if 0%{?rhel} && 0%{?rhel} == 8
+%global         toolset_prefix gcc-toolset-9-
+%endif
+%if 0%{?suse_version} && 0%{?suse_version} < 1600
+%global         toolset_version 9
+%endif
+
+Name:           dtranslatebot
+Version:        0.2.0
+Release:        1%{?dist}
+Summary:        Discord Translation Bot
+License:        BSD-2-Clause
+URL:            https://github.com/Syping/%{name}
+Source0:        %{name}-%{version}.tar.gz
+Source1:        %{name}.json
+Source2:        %{name}.service
+Source3:        %{name}.sysusersd
+
+%if 0%{?fedora} || 0%{?rhel}
+BuildRequires:  %{?toolset_prefix}annobin
+%if 0%{?rhel} && 0%{?rhel} < 9
+BuildRequires:  epel-rpm-macros-systemd
+%endif
+%endif
+BuildRequires:  cmake%{?cmake_suffix}
+BuildRequires:  %{?toolset_prefix}gcc%{?toolset_version}-c++
+BuildRequires:  make
+BuildRequires:  perl(IPC::Cmd)
+BuildRequires:  systemd-rpm-macros
+%systemd_requires
+%if 0%{?fedora} || 0%{?rhel}
+%sysusers_requires_compat
+%endif
+
+%description
+dtranslatebot is a Discord Bot which translate incoming Discord messages to Discord webhooks.
+
+%prep
+%setup -q
+
+%build
+%if 0%{?rhel} && 0%{?rhel} < 8
+source /opt/rh/devtoolset-9/enable
+%endif
+%if 0%{?rhel} && 0%{?rhel} == 8
+source /opt/rh/gcc-toolset-9/enable
+%endif
+%cmake \
+  -DCMAKE_BUILD_TYPE=Release \
+%if 0%{?toolset_version}
+  -DCMAKE_C_COMPILER=gcc-%{toolset_version} \
+  -DCMAKE_CXX_COMPILER=g++-%{toolset_version} \
+%endif
+  -DWITH_DPP_STATIC_BUNDLE=TRUE \
+  -DWITH_SYSTEMD=TRUE
+%cmake_build
+
+%install
+%cmake_install
+mkdir -p %{buildroot}%{_localstatedir}/lib/%{name}
+install -p -D -m 0644 %{SOURCE1} %{buildroot}%{_sysconfdir}/%{name}.json
+install -p -D -m 0644 %{SOURCE2} %{buildroot}%{_unitdir}/%{name}.service
+install -p -D -m 0644 %{SOURCE3} %{buildroot}%{_sysusersdir}/%{name}.conf
+
+%pre
+%if 0%{?fedora} || 0%{?rhel}
+%sysusers_create_compat %{SOURCE3}
+%endif
+%if 0%{?suse_version}
+%sysusers_create_package %{name} %{SOURCE3}
+%endif
+
+%post
+%systemd_post %{name}.service
+
+%preun
+%systemd_preun %{name}.service
+
+%postun
+%systemd_postun_with_restart %{name}.service
+
+%files
+%{_bindir}/%{name}
+%{_unitdir}/%{name}.service
+%{_sysusersdir}/%{name}.conf
+%config(noreplace) %attr(0640,root,%{name}) %{_sysconfdir}/%{name}.json
+%dir %attr(0750,%{name},%{name}) %{_localstatedir}/lib/%{name}

rpmsrc/dtranslatebot.sysusersd

@@ -0,0 +1,2 @@
+#Type Name           ID  GECOS                      Home directory         Shell
+u     dtranslatebot  -   "Discord Translation Bot"  /var/lib/translatebot  -

src/core/database.cpp

@@ -19,17 +19,9 @@
 #ifndef NDEBUG
 #include <iostream>
 #endif
-#include "database_core.h"
+#include "database.h"
 using namespace bot::database;
 
-database::database()
-{
-}
-
-database::~database()
-{
-}
-
 void database::add_channel_target(dpp::snowflake guild_id, dpp::snowflake channel_id, const bot::settings::target &target)
 {
 #ifndef NDEBUG

src/core/database.h

@@ -16,8 +16,8 @@
 * responsible for anything with use of the software, you are self responsible.
 *****************************************************************************/
 
-#ifndef DATABASE_CORE_H
-#define DATABASE_CORE_H
+#ifndef DATABASE_H
+#define DATABASE_H
 
 #include "settings_types.h"
 
@@ -30,8 +30,10 @@ namespace bot {
 
         class database {
         public:
-            explicit database();
-            virtual ~database();
+            explicit database() = default;
+            database(const database&) = delete;
+            database& operator=(const database&) = delete;
+            virtual ~database() = default;
             virtual void add_channel_target(dpp::snowflake guild_id, dpp::snowflake channel_id, const bot::settings::target &target);
             virtual void delete_channel(dpp::snowflake guild_id, dpp::snowflake channel_id);
             virtual void delete_channel_target(dpp::snowflake guild_id, dpp::snowflake channel_id, const std::string &target);
@@ -52,4 +54,4 @@ namespace bot {
     }
 }
 
-#endif // DATABASE_CORE_H
+#endif // DATABASE_H

src/core/main.cpp

@@ -24,22 +24,39 @@
 #include "message_queue.h"
 #include "settings.h"
 #include "slashcommands.h"
+using namespace std::chrono_literals;
 
 int main(int argc, char* argv[]) {
-    if (argc != 2) {
-        std::cout << "Usage: " << argv[0] << " [json]" << std::endl;
+    bool flag_wait_for_translator = false;
+    std::vector<std::string> args;
+    for (size_t i = 1; i < argc; i++) {
+        if (!strcmp(argv[i], "--wait-for-translator"))
+            flag_wait_for_translator = true;
+        else
+            args.push_back(argv[i]);
+    }
+    if (args.size() != 1) {
+        std::cout << "Usage: " << argv[0] << " [--wait-for-translator] [json]" << std::endl;
         return 0;
     }
 
     std::cout << "[Launch] Processing configuration..." << std::endl;
     bot::settings::settings settings;
-    if (!settings.parse_file(argv[1]))
+    if (!settings.parse_file(args.at(0)))
         return 1;
 
-    std::cout << "[Launch] Requesting supported languages..." << std::endl;
-    if (settings.get_translator()->get_languages().empty()) {
-        std::cerr << "[Error] Failed to initialise translateable languages" << std::endl;
-        return 2;
+    for (;;) {
+        std::cout << "[Launch] Requesting supported languages..." << std::endl;
+        if (!settings.get_translator()->get_languages().empty()) {
+            break;
+        }
+        else if (flag_wait_for_translator) {
+            std::this_thread::sleep_for(5000ms);
+        }
+        else {
+            std::cerr << "[Error] Failed to initialise translateable languages" << std::endl;
+            return 1;
+        }
     }
 
     dpp::cluster bot(settings.token(), dpp::i_default_intents | dpp::i_message_content);
@@ -55,7 +72,7 @@ int main(int argc, char* argv[]) {
 
     bot.on_message_create(std::bind(&bot::message_queue::process_message_event, &message_queue, &bot, &settings, std::placeholders::_1));
     bot.on_slashcommand(std::bind(&bot::slashcommands::process_command_event, &bot, &settings, std::placeholders::_1));
-    bot.on_ready([&bot, &settings](const dpp::ready_t &event) {
+    bot.on_ready([&bot, &settings]([[maybe_unused]] const dpp::ready_t &event) {
         if (dpp::run_once<struct register_bot_commands>()) {
             bot::slashcommands::register_commands(&bot, &settings);
         }

src/core/message_queue.cpp

@@ -19,7 +19,7 @@
 #include <thread>
 #include "message_queue.h"
 #include "settings.h"
-using namespace bot;
+using bot::message_queue;
 using namespace std::chrono_literals;
 
 void message_queue::add(const message &message)
@@ -36,6 +36,10 @@ void message_queue::add(message &&message)
 
 void message_queue::process_message_event(dpp::cluster *bot, bot::settings::settings *settings, const dpp::message_create_t &event)
 {
+    // We check for conditions we want to skip translation for
+    if (event.msg.author.id == bot->me.id || event.msg.content.empty() || event.msg.has_thread())
+        return;
+
     if (event.msg.webhook_id) {
         const std::lock_guard<bot::settings::settings> guard(*settings);
 
@@ -44,10 +48,6 @@ void message_queue::process_message_event(dpp::cluster *bot, bot::settings::sett
             return;
     }
 
-    // Same as before, just without the involvement of webhooks
-    if (event.msg.author.id == bot->me.id)
-        return;
-
     const std::lock_guard<bot::settings::settings> guard(*settings);
     if (const bot::settings::channel *channel = settings->get_channel(event.msg.guild_id, event.msg.channel_id)) {
         bot::message message;

src/core/settings.cpp

@@ -19,19 +19,23 @@
 #include <dpp/json.h>
 #include <fstream>
 #include <iostream>
-#include "database_file.h"
 #include "settings.h"
-#include "translator_libretranslate.h"
+#include "../database/file/file.h"
+#include "../translator/deepl/deepl.h"
+#include "../translator/mozhi/mozhi.h"
+#include "../translator/libretranslate/libretranslate.h"
+#include "../translator/lingvatranslate/lingvatranslate.h"
+#include "../translator/stub/stub.h"
 using namespace bot::settings;
 
-void process_database_channels(std::shared_ptr<bot::database::database> database, bot::settings::guild *guild, std::vector<dpp::snowflake> *webhookIds)
+void process_database_channels(std::shared_ptr<bot::database::database> database, bot::settings::guild &guild, std::vector<dpp::snowflake> &webhookIds)
 {
-    const std::vector<dpp::snowflake> db_channels = database->get_channels(guild->id);
+    const std::vector<dpp::snowflake> db_channels = database->get_channels(guild.id);
     for (auto db_channel_id = db_channels.begin(); db_channel_id != db_channels.end(); db_channel_id++) {
         bool channel_found = false;
-        for (auto channel = guild->channel.begin(); channel != guild->channel.end(); channel++) {
+        for (auto channel = guild.channel.begin(); channel != guild.channel.end(); channel++) {
             if (channel->id == *db_channel_id) {
-                const bot::settings::channel db_channel = database->get_channel(guild->id, channel->id);
+                const bot::settings::channel db_channel = database->get_channel(guild.id, channel->id);
                 if (!db_channel.source.empty())
                     channel->source = db_channel.source;
                 for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++) {
@@ -39,14 +43,14 @@ void process_database_channels(std::shared_ptr<bot::database::database> database
                     for (auto target = channel->targets.begin(); target != channel->targets.end(); target++) {
                         if (target->target == db_target->target) {
                             target->webhook = db_target->webhook;
-                            webhookIds->push_back(db_target->webhook.id);
+                            webhookIds.push_back(db_target->webhook.id);
                             target_found = true;
                             break;
                         }
                     }
                     if (!target_found) {
                         channel->targets.push_back(*db_target);
-                        webhookIds->push_back(db_target->webhook.id);
+                        webhookIds.push_back(db_target->webhook.id);
                     }
                 }
                 channel_found = true;
@@ -54,23 +58,23 @@ void process_database_channels(std::shared_ptr<bot::database::database> database
             }
         }
         if (!channel_found) {
-            const bot::settings::channel db_channel = database->get_channel(guild->id, *db_channel_id);
-            guild->channel.push_back(db_channel);
+            const bot::settings::channel db_channel = database->get_channel(guild.id, *db_channel_id);
+            guild.channel.push_back(db_channel);
             for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++)
-                webhookIds->push_back(db_target->webhook.id);
+                webhookIds.push_back(db_target->webhook.id);
         }
     }
 }
 
-void process_database(std::shared_ptr<bot::database::database> database, std::vector<guild> *guilds, std::vector<dpp::snowflake> *webhookIds)
+void process_database(std::shared_ptr<bot::database::database> database, std::vector<guild> &guilds, std::vector<dpp::snowflake> &webhookIds)
 {
     std::cout << "[Launch] Loading database..." << std::endl;
     const std::vector<dpp::snowflake> db_guilds = database->get_guilds();
     for (auto db_guild_id = db_guilds.begin(); db_guild_id != db_guilds.end(); db_guild_id++) {
         bool guild_found = false;
-        for (auto guild = guilds->begin(); guild != guilds->end(); guild++) {
+        for (auto guild = guilds.begin(); guild != guilds.end(); guild++) {
             if (guild->id == *db_guild_id) {
-                process_database_channels(database, &*guild, webhookIds);
+                process_database_channels(database, *guild, webhookIds);
                 guild_found = true;
                 break;
             }
@@ -78,13 +82,13 @@ void process_database(std::shared_ptr<bot::database::database> database, std::ve
         if (!guild_found) {
             bot::settings::guild guild;
             guild.id = *db_guild_id;
-            process_database_channels(database, &guild, webhookIds);
-            guilds->push_back(std::move(guild));
+            process_database_channels(database, guild, webhookIds);
+            guilds.push_back(std::move(guild));
         }
     }
 }
 
-void process_guild_settings(const dpp::json &json, std::vector<guild> *guilds, std::vector<dpp::snowflake> *webhookIds)
+void process_guild_settings(const dpp::json &json, std::vector<guild> &guilds, std::vector<dpp::snowflake> &webhookIds)
 {
     for (auto json_guild = json.begin(); json_guild != json.end(); json_guild++) {
         if (json_guild->is_object()) {
@@ -128,7 +132,7 @@ void process_guild_settings(const dpp::json &json, std::vector<guild> *guilds, s
                             target target;
                             target.target = *json_channel_target;
                             target.webhook = dpp::webhook(json_channel->at("webhook"));
-                            webhookIds->push_back(target.webhook.id);
+                            webhookIds.push_back(target.webhook.id);
                             channel.targets.push_back(std::move(target));
                         }
                         else if (json_channel_target->is_object()) {
@@ -136,7 +140,7 @@ void process_guild_settings(const dpp::json &json, std::vector<guild> *guilds, s
                                 target target;
                                 target.target = json_target.key();
                                 target.webhook = dpp::webhook(*json_target);
-                                webhookIds->push_back(target.webhook.id);
+                                webhookIds.push_back(target.webhook.id);
                                 channel.targets.push_back(std::move(target));
                             }
                         }
@@ -146,7 +150,7 @@ void process_guild_settings(const dpp::json &json, std::vector<guild> *guilds, s
                         guild.channel.push_back(std::move(channel));
                 }
             }
-            guilds->push_back(std::move(guild));
+            guilds.push_back(std::move(guild));
         }
     }
 }
@@ -162,103 +166,162 @@ void process_preflang_settings(const dpp::json &json, std::vector<std::string> *
     }
 }
 
-void process_user_settings(const dpp::json &json, uint16_t *avatar_size)
-{
-    auto json_avatar_size = json.find("avatar_size");
-    if (json_avatar_size != json.end()) {
-        *avatar_size = *json_avatar_size;
-        if (*avatar_size < 16)
-            *avatar_size = 16;
-        else if (*avatar_size > 4096)
-            *avatar_size = 4096;
-    }
-}
-
-void process_url(const std::string &url, translator *translator)
+void process_server_url(const std::string &url, translator &translator)
 {
     std::string_view url_v = url;
     if (url_v.substr(0, 7) == "http://") {
-        translator->tls = false;
-        if (!translator->port)
-            translator->port = 80;
+        translator.tls = false;
+        if (!translator.port)
+            translator.port = 80;
         url_v = url_v.substr(7);
     }
     else if (url_v.substr(0, 8) == "https://") {
-        translator->tls = true;
-        if (!translator->port)
-            translator->port = 443;
+        translator.tls = true;
+        if (!translator.port)
+            translator.port = 443;
         url_v = url_v.substr(8);
     }
     else {
-        translator->tls = false;
-        if (!translator->port)
-            translator->port = 80;
+        translator.tls = false;
+        if (!translator.port)
+            translator.port = 80;
     }
     auto slash_pos = url_v.find_first_of('/');
     if (slash_pos != std::string_view::npos) {
-        translator->url = url_v.substr(slash_pos);
+        translator.url = url_v.substr(slash_pos);
         url_v = url_v.substr(0, slash_pos);
     }
     else {
-        translator->url = "/";
+        translator.url = "/";
         url_v = url_v.substr(0, slash_pos);
     }
-    auto colon_pos = url_v.find_first_of(':');
+    // We don't have IPv6 support here yet
+    auto colon_pos = url_v.find_last_of(':');
     if (colon_pos != std::string_view::npos) {
-        translator->hostname = url_v.substr(0, colon_pos);
+        translator.hostname = url_v.substr(0, colon_pos);
         const int port = std::stoi(std::string(url_v.substr(colon_pos + 1)));
         if (port > 0 && port < 65536)
-            translator->port = static_cast<uint16_t>(port);
+            translator.port = static_cast<uint16_t>(port);
         else
             throw std::invalid_argument("Port is out of range");
     }
     else {
-        translator->hostname = url_v;
+        translator.hostname = url_v;
     }
 }
 
-bool process_translator_settings(const dpp::json &json, translator *translator)
+bool process_server(const dpp::json &json, translator &translator)
+{
+    auto json_hostname = json.find("hostname");
+    if (json_hostname != json.end())
+        translator.hostname = *json_hostname;
+
+    auto json_tls = json.find("tls");
+    if (json_tls != json.end())
+        translator.tls = *json_tls;
+    else
+        translator.tls = false;
+
+    auto json_port = json.find("port");
+    if (json_port != json.end())
+        translator.port = *json_port;
+    else
+        translator.port = 0;
+
+    auto json_url = json.find("url");
+    if (json_url == json.end()) {
+        std::cerr << "[Error] Value url not found in translator object" << std::endl;
+        return false;
+    }
+    if (translator.hostname.empty())
+        process_server_url(*json_url, translator);
+    else
+        translator.url = *json_url;
+
+    auto json_apiKey = json.find("apiKey");
+    if (json_apiKey != json.end())
+        translator.apiKey = *json_apiKey;
+
+    return true;
+}
+
+void process_user_settings(const dpp::json &json, uint16_t &avatar_size)
+{
+    auto json_avatar_size = json.find("avatar_size");
+    if (json_avatar_size != json.end()) {
+        avatar_size = *json_avatar_size;
+        if (avatar_size < 16)
+            avatar_size = 16;
+        else if (avatar_size > 4096)
+            avatar_size = 4096;
+    }
+}
+
+bool process_translator_settings(const dpp::json &json, std::shared_ptr<bot::translator::translator> &translator_instance)
 {
     if (!json.is_object()) {
         std::cerr << "[Error] Value translator needs to be a object" << std::endl;
         return false;
     }
 
-    auto json_translate_hostname = json.find("hostname");
-    if (json_translate_hostname != json.end())
-        translator->hostname = *json_translate_hostname;
-    else
-        translator->hostname = {};
-
-    auto json_translate_tls = json.find("tls");
-    if (json_translate_tls != json.end())
-        translator->tls = *json_translate_tls;
-    else
-        translator->tls = false;
-
-    auto json_translate_port = json.find("port");
-    if (json_translate_port != json.end())
-        translator->port = *json_translate_port;
-    else
-        translator->port = 0;
-
-    auto json_translate_url = json.find("url");
-    if (json_translate_url == json.end()) {
-        std::cerr << "[Error] Value url not found in translator object" << std::endl;
-        return false;
-    }
-    if (translator->hostname.empty()) {
-        process_url(*json_translate_url, translator);
+    bot::settings::translator translator;
+    auto json_translator_type = json.find("type");
+    if (json_translator_type != json.end()) {
+        translator.type = *json_translator_type;
+        std::transform(translator.type.begin(), translator.type.end(), translator.type.begin(), ::tolower);
     }
     else {
-        translator->url = *json_translate_url;
+        translator.type = "libretranslate";
     }
 
-    auto json_translate_apiKey = json.find("apiKey");
-    if (json_translate_apiKey != json.end())
-        translator->apiKey = *json_translate_apiKey;
-    else
-        translator->apiKey.clear();
+    if (translator.type == "deepl") {
+        auto json_deepl_hostname = json.find("hostname");
+        if (json_deepl_hostname != json.end())
+            translator.hostname = *json_deepl_hostname;
+        else
+            translator.hostname = "api-free.deepl.com";
+
+        auto json_deepl_apiKey = json.find("apiKey");
+        if (json_deepl_apiKey == json.end()) {
+            std::cerr << "[Error] DeepL requires API key for authorization" << std::endl;
+            return false;
+        }
+        translator.apiKey = *json_deepl_apiKey;
+
+        translator_instance = std::make_shared<bot::translator::deepl>(translator.hostname, translator.apiKey);
+    }
+    else if (translator.type == "mozhi") {
+        if (!process_server(json, translator))
+            return false;
+
+        std::string mozhi_engine;
+        auto json_mozhi_engine = json.find("engine");
+        if (json_mozhi_engine != json.end())
+            mozhi_engine = *json_mozhi_engine;
+        else
+            mozhi_engine = "google";
+
+        translator_instance = std::make_shared<bot::translator::mozhi>(translator.hostname, translator.port, translator.url, translator.tls, mozhi_engine);
+    }
+    else if (translator.type == "libretranslate") {
+        if (!process_server(json, translator))
+            return false;
+
+        translator_instance = std::make_shared<bot::translator::libretranslate>(translator.hostname, translator.port, translator.url, translator.tls, translator.apiKey);
+    }
+    else if (translator.type == "lingvatranslate") {
+        if (!process_server(json, translator))
+            return false;
+
+        translator_instance = std::make_shared<bot::translator::lingvatranslate>(translator.hostname, translator.port, translator.url, translator.tls);
+    }
+    else if (translator.type == "stub") {
+        translator_instance = std::make_shared<bot::translator::stub>();
+    }
+    else {
+        std::cerr << "[Error] Translator " << translator.type << " is unknown" << std::endl;
+        return false;
+    }
 
     return true;
 }
@@ -300,6 +363,27 @@ void settings::add_translatebot_webhook(dpp::snowflake webhook_id)
     m_webhookIds.push_back(webhook_id);
 }
 
+void settings::erase_channel(guild &guild, dpp::snowflake channel_id)
+{
+    for (auto channel = guild.channel.begin(); channel != guild.channel.end(); channel++) {
+        if (channel->id == channel_id) {
+            guild.channel.erase(channel);
+            return;
+        }
+    }
+}
+
+void settings::erase_guild(dpp::snowflake guild_id)
+{
+    const std::lock_guard<std::recursive_mutex> guard(m_mutex);
+    for (auto guild = m_guilds.begin(); guild != m_guilds.end(); guild++) {
+        if (guild->id == guild_id) {
+            m_guilds.erase(guild);
+            return;
+        }
+    }
+}
+
 void settings::erase_translatebot_webhook(dpp::snowflake webhook_id)
 {
     const std::lock_guard<std::recursive_mutex> guard(m_mutex);
@@ -314,9 +398,9 @@ uint16_t settings::avatar_size()
     return m_avatarSize;
 }
 
-channel* settings::get_channel(guild *guild, dpp::snowflake channel_id)
+channel* settings::get_channel(guild &guild, dpp::snowflake channel_id)
 {
-    for (auto channel = guild->channel.begin(); channel != guild->channel.end(); channel++) {
+    for (auto channel = guild.channel.begin(); channel != guild.channel.end(); channel++) {
         if (channel->id == channel_id)
             return &*channel;
     }
@@ -413,10 +497,10 @@ std::shared_ptr<bot::database::database> settings::get_database() const
     return m_database;
 }
 
-std::unique_ptr<bot::translator::translator> settings::get_translator() const
+std::shared_ptr<bot::translator::translator> settings::get_translator() const
 {
     const std::lock_guard<std::recursive_mutex> guard(m_mutex);
-    return std::make_unique<bot::translator::libretranslate>(m_translator.hostname, m_translator.port, m_translator.url, m_translator.tls, m_translator.apiKey);
+    return m_translator;
 }
 
 const std::string settings::token() const
@@ -446,7 +530,7 @@ bool settings::parse(const std::string &data, bool initialize)
     try {
         dpp::json json;
         try {
-            json = dpp::json::parse(data);
+            json = dpp::json::parse(data, nullptr, true, true);
         }
         catch (const std::exception &exception) {
             std::cerr << "[Exception] " << exception.what() << std::endl;
@@ -454,21 +538,24 @@ bool settings::parse(const std::string &data, bool initialize)
             return false;
         }
 
+        const std::lock_guard<std::recursive_mutex> guard(m_mutex);
         auto json_token = json.find("token");
-        if (json_token == json.end()) {
-            std::cerr << "[Error] Value token not found" << std::endl;
+        if (json_token != json.end())
+            m_token = *json_token;
+        else if (char *token = getenv("DTRANSLATEBOT_TOKEN"))
+            m_token = token;
+
+        if (m_token.empty()) {
+            std::cerr << "[Error] Discord Bot Token is not configured" << std::endl;
             return false;
         }
 
-        const std::lock_guard<std::recursive_mutex> guard(m_mutex);
-        m_token = *json_token;
-
         std::filesystem::path storage_path;
         auto json_storage = json.find("storage");
         if (json_storage != json.end())
             storage_path = std::string(*json_storage);
         else if (char *storagepath = getenv("DTRANSLATEBOT_STORAGE"))
-            storage_path  = storagepath;
+            storage_path = storagepath;
 
         if (storage_path.empty())
             storage_path = std::filesystem::current_path();
@@ -480,14 +567,12 @@ bool settings::parse(const std::string &data, bool initialize)
             std::cerr << "[Error] Value translator not found" << std::endl;
             return false;
         }
-        if (!process_translator_settings(*json_translator, &m_translator))
+        if (!process_translator_settings(*json_translator, m_translator))
             return false;
 
-        m_avatarSize = 256;
-
         auto json_guilds = json.find("guilds");
         if (json_guilds != json.end() && json_guilds->is_object())
-            process_guild_settings(*json_guilds, &m_guilds, &m_webhookIds);
+            process_guild_settings(*json_guilds, m_guilds, m_webhookIds);
 
         auto json_preflangs = json.find("preferred_lang");
         if (json_preflangs != json.end() && json_preflangs->is_array())
@@ -495,9 +580,9 @@ bool settings::parse(const std::string &data, bool initialize)
 
         auto json_user = json.find("user");
         if (json_user != json.end() && json_user->is_object())
-            process_user_settings(*json_user, &m_avatarSize);
+            process_user_settings(*json_user, m_avatarSize);
 
-        process_database(m_database, &m_guilds, &m_webhookIds);
+        process_database(m_database, m_guilds, m_webhookIds);
 
         return true;
     }

src/core/settings.h

@@ -19,9 +19,9 @@
 #ifndef SETTINGS_H
 #define SETTINGS_H
 #include <mutex>
-#include "database_core.h"
+#include "database.h"
 #include "settings_types.h"
-#include "translator_core.h"
+#include "translator.h"
 
 namespace bot {
     namespace settings {
@@ -33,11 +33,13 @@ namespace bot {
             void add_translatebot_webhook(dpp::snowflake webhook_id);
 
             /* erase functions */
+            static void erase_channel(guild &guild, dpp::snowflake channel_id);
+            void erase_guild(dpp::snowflake guild_id);
             void erase_translatebot_webhook(dpp::snowflake webhook_id);
 
             /* get functions */
             uint16_t avatar_size();
-            static channel* get_channel(guild *guild, dpp::snowflake channel_id);
+            static channel* get_channel(guild &guild, dpp::snowflake channel_id);
             channel* get_channel(dpp::snowflake guild_id, dpp::snowflake channel_id);
             guild* get_guild(dpp::snowflake guild_id);
             target* get_target(dpp::snowflake guild_id, dpp::snowflake channel_id, const std::string &target);
@@ -45,7 +47,7 @@ namespace bot {
             static const target* get_target(const channel *channel, const std::string &target);
             const std::vector<std::string> preferred_languages() const;
             std::shared_ptr<bot::database::database> get_database() const;
-            std::unique_ptr<bot::translator::translator> get_translator() const;
+            std::shared_ptr<bot::translator::translator> get_translator() const;
             const std::string token() const;
 
             /* is functions */
@@ -59,14 +61,19 @@ namespace bot {
             bool parse(const std::string &data, bool initialize = true);
             bool parse_file(const std::string &filename, bool initialize = true);
 
+            /* prevent copies */
+            settings() = default;
+            settings(const settings&) = delete;
+            settings& operator=(const settings&) = delete;
+
         private:
             mutable std::recursive_mutex m_mutex;
-            size_t m_externallyLockedCount;
-            uint16_t m_avatarSize;
+            size_t m_externallyLockedCount = 0;
+            uint16_t m_avatarSize = 256;
             std::shared_ptr<bot::database::database> m_database;
             std::vector<guild> m_guilds;
             std::vector<std::string> m_prefLangs;
-            bot::settings::translator m_translator;
+            std::shared_ptr<bot::translator::translator> m_translator;
             std::string m_token;
             std::vector<dpp::snowflake> m_webhookIds;
         };

src/core/settings_types.h

@@ -41,6 +41,7 @@ namespace bot {
             std::vector<bot::settings::channel> channel;
         };
         struct translator {
+            std::string type;
             std::string hostname;
             uint16_t port;
             std::string url;

src/core/slashcommands.cpp

@@ -18,19 +18,20 @@
 
 #include <sstream>
 #include "slashcommands.h"
+using bot::slashcommands;
 using namespace std::string_literals;
 
-void bot::slashcommands::process_command_event(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
+void slashcommands::process_command_event(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
 {
     if (event.command.get_command_name() == "edit")
-        bot::slashcommands::process_edit_command(bot, settings, event);
+        slashcommands::process_edit_command(bot, settings, event);
     else if (event.command.get_command_name() == "list")
-        bot::slashcommands::process_list_command(bot, settings, event);
+        slashcommands::process_list_command(bot, settings, event);
     else if (event.command.get_command_name() == "translate" || event.command.get_command_name() == "translate_pref")
-        bot::slashcommands::process_translate_command(bot, settings, event);
+        slashcommands::process_translate_command(bot, settings, event);
 }
 
-void bot::slashcommands::process_edit_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
+void slashcommands::process_edit_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
 {
     try {
         dpp::permission user_permissions = event.command.get_resolved_permission(event.command.usr.id);
@@ -40,65 +41,84 @@ void bot::slashcommands::process_edit_command(dpp::cluster *bot, bot::settings::
         dpp::command_interaction interaction = event.command.get_command_interaction();
         if (interaction.options[0].name == "delete") {
             const std::lock_guard<bot::settings::settings> guard(*settings);
-            if (bot::settings::channel *channel = settings->get_channel(event.command.guild_id, event.command.channel_id)) {
-                const std::string target = std::get<std::string>(event.get_parameter("target"));
+            if (bot::settings::guild *guild = settings->get_guild(event.command.guild_id)) {
+                if (bot::settings::channel *channel = settings->get_channel(*guild, event.command.channel_id)) {
+                    const std::string target = std::get<std::string>(event.get_parameter("target"));
 
-                std::shared_ptr<bot::database::database> database = settings->get_database();
-                const bot::settings::channel db_channel = database->get_channel(event.command.guild_id, event.command.channel_id);
+                    auto database = settings->get_database();
+                    const bot::settings::channel db_channel = database->get_channel(event.command.guild_id, event.command.channel_id);
 
-                if (db_channel.targets.empty()) {
-                    event.reply(dpp::message("The current channel has no deleteable targets!").set_flags(dpp::m_ephemeral));
-                }
-                else if (target == "**") {
-                    std::vector<std::string> targets;
-                    for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++) {
-                        targets.push_back(db_target->target);
+                    if (db_channel.targets.empty()) {
+                        event.reply(dpp::message("The current channel has no deleteable targets!").set_flags(dpp::m_ephemeral));
                     }
-                    for (auto target = channel->targets.begin(); target != channel->targets.end();) {
-                        if (std::find(targets.begin(), targets.end(), target->target) != targets.end()) {
-                            bot->delete_webhook(target->webhook.id, std::bind(&bot::slashcommands::process_deleted_webhook, settings, target->webhook.id, std::placeholders::_1));
-                            target = channel->targets.erase(target);
+                    else if (target == "**") {
+                        std::vector<std::string> targets;
+                        for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++) {
+                            targets.push_back(db_target->target);
                         }
-                        else {
-                            target++;
+                        for (auto target = channel->targets.begin(); target != channel->targets.end();) {
+                            if (std::find(targets.begin(), targets.end(), target->target) != targets.end()) {
+                                bot->delete_webhook(target->webhook.id, std::bind(&slashcommands::process_deleted_webhook, settings, target->webhook.id, std::placeholders::_1));
+                                target = channel->targets.erase(target);
+                            }
+                            else {
+                                target++;
+                            }
                         }
+
+                        database->delete_channel(event.command.guild_id, event.command.channel_id);
+                        database->sync();
+
+                        if (channel->targets.empty()) {
+                            settings->erase_channel(*guild, event.command.channel_id);
+                            if (guild->channel.empty()) {
+                                settings->erase_guild(event.command.guild_id);
+                            }
+                        }
+
+                        event.reply(dpp::message("Deleteable targets have being deleted!").set_flags(dpp::m_ephemeral));
                     }
-
-                    database->delete_channel(event.command.guild_id, event.command.channel_id);
-                    database->sync();
-
-                    event.reply(dpp::message("Deleteable targets have being deleted!").set_flags(dpp::m_ephemeral));
-                }
-                else {
-                    bool target_found = false;
-                    for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++) {
-                        if (db_target->target == target) {
-                            target_found = true;
-                            break;
-                        }
-                    }
-
-                    if (target_found) {
-                        for (auto _target = channel->targets.begin(); _target != channel->targets.end(); _target++) {
-                            if (_target->target == target) {
-                                bot->delete_webhook(_target->webhook.id, std::bind(&bot::slashcommands::process_deleted_webhook, settings, _target->webhook.id, std::placeholders::_1));
-                                channel->targets.erase(_target);
+                    else {
+                        bool target_found = false;
+                        for (auto db_target = db_channel.targets.begin(); db_target != db_channel.targets.end(); db_target++) {
+                            if (db_target->target == target) {
+                                target_found = true;
                                 break;
                             }
                         }
 
-                        if (db_channel.targets.size() == 1)
-                            database->delete_channel(event.command.guild_id, event.command.channel_id);
-                        else
-                            database->delete_channel_target(event.command.guild_id, event.command.channel_id, target);
-                        database->sync();
+                        if (target_found) {
+                            for (auto _target = channel->targets.begin(); _target != channel->targets.end(); _target++) {
+                                if (_target->target == target) {
+                                    bot->delete_webhook(_target->webhook.id, std::bind(&slashcommands::process_deleted_webhook, settings, _target->webhook.id, std::placeholders::_1));
+                                    channel->targets.erase(_target);
+                                    break;
+                                }
+                            }
 
-                        event.reply(dpp::message("Target have being deleted!").set_flags(dpp::m_ephemeral));
-                    }
-                    else {
-                        event.reply(dpp::message("Target language is not being found or deleteable!").set_flags(dpp::m_ephemeral));
+                            if (db_channel.targets.size() == 1)
+                                database->delete_channel(event.command.guild_id, event.command.channel_id);
+                            else
+                                database->delete_channel_target(event.command.guild_id, event.command.channel_id, target);
+                            database->sync();
+
+                            if (channel->targets.empty()) {
+                                settings->erase_channel(*guild, event.command.channel_id);
+                                if (guild->channel.empty()) {
+                                    settings->erase_guild(event.command.guild_id);
+                                }
+                            }
+
+                            event.reply(dpp::message("Target have being deleted!").set_flags(dpp::m_ephemeral));
+                        }
+                        else {
+                            event.reply(dpp::message("Target language is not being found or deleteable!").set_flags(dpp::m_ephemeral));
+                        }
                     }
                 }
+                else {
+                    event.reply(dpp::message("The current channel is not being translated!").set_flags(dpp::m_ephemeral));
+                }
             }
             else {
                 event.reply(dpp::message("The current channel is not being translated!").set_flags(dpp::m_ephemeral));
@@ -117,13 +137,13 @@ void bot::slashcommands::process_edit_command(dpp::cluster *bot, bot::settings::
                         source_valid = true;
                         break;
                     }
-                    language_codes << " " << language.code;
+                    language_codes << ' ' << language.code;
                 }
 
                 if (source_valid) {
                     channel->source = source;
 
-                    std::shared_ptr<bot::database::database> database = settings->get_database();
+                    auto database = settings->get_database();
                     database->set_channel_source(event.command.guild_id, event.command.channel_id, source);
                     database->sync();
 
@@ -147,7 +167,7 @@ void bot::slashcommands::process_edit_command(dpp::cluster *bot, bot::settings::
     }
 }
 
-void bot::slashcommands::process_deleted_webhook(bot::settings::settings *settings, dpp::snowflake webhook_id, const dpp::confirmation_callback_t &callback)
+void slashcommands::process_deleted_webhook(bot::settings::settings *settings, dpp::snowflake webhook_id, const dpp::confirmation_callback_t &callback)
 {
     if (callback.is_error()) {
         std::cerr << "[Error] Failed to delete Webhook " << webhook_id << std::endl;
@@ -156,7 +176,7 @@ void bot::slashcommands::process_deleted_webhook(bot::settings::settings *settin
     settings->erase_translatebot_webhook(webhook_id);
 }
 
-void bot::slashcommands::process_list_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
+void slashcommands::process_list_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
 {
     try {
         dpp::command_interaction interaction = event.command.get_command_interaction();
@@ -171,7 +191,7 @@ void bot::slashcommands::process_list_command(dpp::cluster *bot, bot::settings::
                 // We want give more information to users who can Manage Webhooks
                 dpp::permission user_permissions = event.command.get_resolved_permission(event.command.usr.id);
                 if (user_permissions.has(dpp::p_manage_webhooks)) {
-                    std::shared_ptr<bot::database::database> database = settings->get_database();
+                    auto database = settings->get_database();
                     const bot::settings::channel db_channel = database->get_channel(event.command.guild_id, event.command.channel_id);
 
                     for (auto target = channel->targets.begin(); target != channel->targets.end(); target++) {
@@ -217,17 +237,44 @@ void bot::slashcommands::process_list_command(dpp::cluster *bot, bot::settings::
                 event.reply(dpp::message("The current guild have no translated channel!").set_flags(dpp::m_ephemeral));
             }
         }
+        else if (interaction.options[0].name == "languages") {
+            dpp::permission user_permissions = event.command.get_resolved_permission(event.command.usr.id);
+            if (user_permissions.has(dpp::p_manage_webhooks)) {
+                const std::vector<bot::translator::language> languages = settings->get_translator()->get_languages();
+                std::ostringstream reply_languages;
+                reply_languages << "**Available Languages**\n";
+                for (auto language = languages.begin(); language != languages.end();) {
+                    reply_languages << language->name << ": " << language->code;
+                    if (++language != languages.end())
+                        reply_languages << '\n';
+                }
+                if (reply_languages.str().length() <= 2000) {
+                    event.reply(dpp::message(reply_languages.str()).set_flags(dpp::m_ephemeral));
+                }
+                else {
+                    reply_languages.str({});
+                    reply_languages << "Available Languages:";
+                    for (auto language = languages.begin(); language != languages.end(); language++) {
+                        reply_languages << ' ' << language->code;
+                    }
+                    event.reply(dpp::message(reply_languages.str()).set_flags(dpp::m_ephemeral));
+                }
+            }
+            else {
+                event.reply(dpp::message("Unauthorized to list available languages!").set_flags(dpp::m_ephemeral));
+            }
+        }
         else {
             throw std::invalid_argument("Option " + interaction.options[0].name + " is not known");
         }
     }
-    catch (const std::exception& exception) {
+    catch (const std::exception &exception) {
         std::cerr << "[Exception] " << exception.what() << std::endl;
         event.reply(dpp::message("Exception while processing command:\n"s + exception.what()).set_flags(dpp::m_ephemeral));
     }
 }
 
-void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
+void slashcommands::process_translate_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event)
 {
     try {
         dpp::permission user_permissions = event.command.get_resolved_permission(event.command.usr.id);
@@ -241,13 +288,13 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
         dpp::command_interaction interaction = event.command.get_command_interaction();
         if (interaction.options[0].name == "channel") {
             v_target = event.command.get_resolved_channel(
-                           std::get<dpp::snowflake>(event.get_parameter("channel")));
+                std::get<dpp::snowflake>(event.get_parameter("channel")));
         }
         else if (interaction.options[0].name == "webhook") {
             v_target = dpp::webhook(std::get<std::string>(event.get_parameter("webhook")));
         }
 
-        const std::vector<bot::translator::language> languages = settings->get_translator()->get_languages();
+        const auto languages = settings->get_translator()->get_languages();
 
         std::ostringstream language_codes;
         bool source_valid = false, target_valid = false;
@@ -258,7 +305,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
                 target_valid = true;
             if (source_valid && target_valid)
                 break;
-            language_codes << " " << language.code;
+            language_codes << ' ' << language.code;
         }
 
         if (source_valid && target_valid) {
@@ -271,7 +318,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
                     webhook.guild_id = channel->guild_id;
                     webhook.name = "Translate Bot Webhook <" + std::to_string(event.command.channel_id) + ":" + source + ":" + target + ">";
 
-                    bot->create_webhook(webhook, std::bind(&bot::slashcommands::process_translate_webhook_new_channel, settings, event, source, target, std::placeholders::_1));
+                    bot->create_webhook(webhook, std::bind(&slashcommands::process_translate_webhook_new_channel, settings, event, source, target, std::placeholders::_1));
                 }
                 else if (dpp::webhook *webhook = std::get_if<dpp::webhook>(&v_target)) {
                     const bot::settings::target s_target = { target, *webhook };
@@ -280,7 +327,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
                     settings->add_channel(s_channel, event.command.guild_id);
                     settings->add_translatebot_webhook(webhook->id);
 
-                    std::shared_ptr<bot::database::database> database = settings->get_database();
+                    auto database = settings->get_database();
                     database->set_channel_source(event.command.guild_id, event.command.channel_id, source);
                     database->add_channel_target(event.command.guild_id, event.command.channel_id, s_target);
                     database->sync();
@@ -298,7 +345,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
                     webhook.guild_id = channel->guild_id;
                     webhook.name = "Translate Bot Webhook <" + std::to_string(event.command.channel_id) + ":" + source + ":" + target + ">";
 
-                    bot->create_webhook(webhook, std::bind(&bot::slashcommands::process_translate_webhook_add_target, settings, event, target, std::placeholders::_1));
+                    bot->create_webhook(webhook, std::bind(&slashcommands::process_translate_webhook_add_target, settings, event, target, std::placeholders::_1));
                 }
                 else if (dpp::webhook *webhook = std::get_if<dpp::webhook>(&v_target)) {
                     const bot::settings::target s_target = { target, *webhook };
@@ -306,7 +353,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
                     settings->add_target(s_target, event.command.guild_id, event.command.channel_id);
                     settings->add_translatebot_webhook(webhook->id);
 
-                    std::shared_ptr<bot::database::database> database = settings->get_database();
+                    auto database = settings->get_database();
                     database->add_channel_target(event.command.guild_id, event.command.channel_id, s_target);
                     database->sync();
 
@@ -333,7 +380,7 @@ void bot::slashcommands::process_translate_command(dpp::cluster *bot, bot::setti
     }
 }
 
-void bot::slashcommands::process_translate_webhook_add_target(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &target, const dpp::confirmation_callback_t &callback)
+void slashcommands::process_translate_webhook_add_target(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &target, const dpp::confirmation_callback_t &callback)
 {
     if (callback.is_error()) {
         event.reply(dpp::message("Failed to generate webhook!").set_flags(dpp::m_ephemeral));
@@ -347,14 +394,14 @@ void bot::slashcommands::process_translate_webhook_add_target(bot::settings::set
     settings->add_target(s_target, event.command.guild_id, event.command.channel_id);
     settings->add_translatebot_webhook(webhook.id);
 
-    std::shared_ptr<bot::database::database> database = settings->get_database();
+    auto database = settings->get_database();
     database->add_channel_target(event.command.guild_id, event.command.channel_id, s_target);
     database->sync();
 
     event.reply(dpp::message("Channel will be now translated!").set_flags(dpp::m_ephemeral));
 }
 
-void bot::slashcommands::process_translate_webhook_new_channel(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &source, const std::string &target, const dpp::confirmation_callback_t &callback)
+void slashcommands::process_translate_webhook_new_channel(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &source, const std::string &target, const dpp::confirmation_callback_t &callback)
 {
     if (callback.is_error()) {
         event.reply(dpp::message("Failed to generate webhook!").set_flags(dpp::m_ephemeral));
@@ -369,7 +416,7 @@ void bot::slashcommands::process_translate_webhook_new_channel(bot::settings::se
     settings->add_channel(s_channel, event.command.guild_id);
     settings->add_translatebot_webhook(webhook.id);
 
-    std::shared_ptr<bot::database::database> database = settings->get_database();
+    auto database = settings->get_database();
     database->set_channel_source(event.command.guild_id, event.command.channel_id, source);
     database->add_channel_target(event.command.guild_id, event.command.channel_id, s_target);
     database->sync();
@@ -377,7 +424,7 @@ void bot::slashcommands::process_translate_webhook_new_channel(bot::settings::se
     event.reply(dpp::message("Channel will be now translated!").set_flags(dpp::m_ephemeral));
 }
 
-void bot::slashcommands::register_commands(dpp::cluster *bot, bot::settings::settings *settings)
+void slashcommands::register_commands(dpp::cluster *bot, bot::settings::settings *settings)
 {
     settings->lock();
     const std::vector<bot::translator::language> languages = settings->get_translator()->get_languages();
@@ -387,9 +434,9 @@ void bot::slashcommands::register_commands(dpp::cluster *bot, bot::settings::set
     std::vector<dpp::slashcommand> commands;
 
     dpp::command_option source_option(dpp::co_string, "source", "Source language (ISO 639-1)", true);
-    source_option.set_max_length(static_cast<int64_t>(2)).set_min_length(static_cast<int64_t>(2));
+    source_option.set_max_length(static_cast<int64_t>(5)).set_min_length(static_cast<int64_t>(2));
     dpp::command_option target_option(dpp::co_string, "target", "Target language (ISO 639-1)", true);
-    target_option.set_max_length(static_cast<int64_t>(2)).set_min_length(static_cast<int64_t>(2));
+    target_option.set_max_length(static_cast<int64_t>(5)).set_min_length(static_cast<int64_t>(2));
 
     dpp::slashcommand command_edit("edit", "Edit current channel settings", bot->me.id);
     command_edit.set_default_permissions(dpp::p_manage_webhooks);
@@ -404,8 +451,10 @@ void bot::slashcommands::register_commands(dpp::cluster *bot, bot::settings::set
     dpp::slashcommand command_list("list", "List translation settings", bot->me.id);
     dpp::command_option channel_list_subcommand(dpp::co_sub_command, "channel", "List current channel translation settings");
     dpp::command_option guild_list_subcommand(dpp::co_sub_command, "guild", "List current guild translation settings");
+    dpp::command_option languages_list_subcommand(dpp::co_sub_command, "languages", "List available languages to translate");
     command_list.add_option(channel_list_subcommand);
     command_list.add_option(guild_list_subcommand);
+    command_list.add_option(languages_list_subcommand);
     commands.push_back(command_list);
 
     dpp::slashcommand command_translate("translate", "Translate current channel", bot->me.id);

src/core/slashcommands.h

@@ -23,16 +23,20 @@
 #include "settings.h"
 
 namespace bot {
-    namespace slashcommands {
-        extern void process_command_event(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
-        extern void process_edit_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
-        extern void process_deleted_webhook(bot::settings::settings *settings, dpp::snowflake webhook_id, const dpp::confirmation_callback_t &callback);
-        extern void process_list_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
-        extern void process_translate_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
-        extern void process_translate_webhook_add_target(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &target, const dpp::confirmation_callback_t &callback);
-        extern void process_translate_webhook_new_channel(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &source, const std::string &target, const dpp::confirmation_callback_t &callback);
-        extern void register_commands(dpp::cluster *bot, bot::settings::settings *settings);
-    }
+    class slashcommands {
+    public:
+        slashcommands() = delete;
+        static void process_command_event(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
+        static void register_commands(dpp::cluster *bot, bot::settings::settings *settings);
+
+    private:
+        static void process_edit_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
+        static void process_deleted_webhook(bot::settings::settings *settings, dpp::snowflake webhook_id, const dpp::confirmation_callback_t &callback);
+        static void process_list_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
+        static void process_translate_command(dpp::cluster *bot, bot::settings::settings *settings, const dpp::slashcommand_t &event);
+        static void process_translate_webhook_add_target(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &target, const dpp::confirmation_callback_t &callback);
+        static void process_translate_webhook_new_channel(bot::settings::settings *settings, const dpp::slashcommand_t &event, const std::string &source, const std::string &target, const dpp::confirmation_callback_t &callback);
+    };
 }
 
 #endif // SLASHCOMMANDS_H

src/core/submit_queue.cpp

@@ -19,7 +19,7 @@
 #include <thread>
 #include "submit_queue.h"
 #include "webhook_push.h"
-using namespace bot;
+using bot::submit_queue;
 using namespace std::chrono_literals;
 
 void submit_queue::add(const translated_message &message)

src/core/translator.cpp

@@ -19,17 +19,9 @@
 #ifndef NDEBUG
 #include <iostream>
 #endif
-#include "translator_core.h"
+#include "translator.h"
 using namespace bot::translator;
 
-translator::translator()
-{
-}
-
-translator::~translator()
-{
-}
-
 const std::vector<language> translator::get_languages()
 {
 #ifndef NDEBUG

src/core/translator.h

@@ -16,9 +16,10 @@
 * responsible for anything with use of the software, you are self responsible.
 *****************************************************************************/
 
-#ifndef TRANSLATOR_CORE_H
-#define TRANSLATOR_CORE_H
+#ifndef TRANSLATOR_H
+#define TRANSLATOR_H
 
+#include <chrono>
 #include <string>
 #include <vector>
 
@@ -29,14 +30,21 @@ namespace bot {
             std::string name;
         };
 
+        struct supported_languages {
+            std::vector<language> languages;
+            std::chrono::system_clock::time_point query_time;
+        };
+
         class translator {
         public:
-            explicit translator();
-            virtual ~translator();
+            explicit translator() = default;
+            virtual ~translator() = default;
+            translator(const translator&) = delete;
+            translator& operator=(const translator&) = delete;
             virtual const std::vector<language> get_languages();
             virtual const std::string translate(const std::string &text, const std::string &source, const std::string &target);
         };
     }
 }
 
-#endif // TRANSLATOR_CORE_H
+#endif // TRANSLATOR_H

src/core/webhook_push.cpp

@@ -25,10 +25,12 @@ using namespace std::string_view_literals;
 void bot::webhook_push::run(const bot::translated_message &message, dpp::cluster *bot)
 {
     dpp::json json_body = {
-        {"username"s, message.author},
-        {"avatar_url"s, message.avatar}
+        {"username"s, message.author}
     };
 
+    if (!message.avatar.empty())
+        json_body["avatar_url"] = message.avatar;
+
     // We will split too long messages into multiple messages
     if (message.message.length() > 2000) {
         std::string_view message_v = message.message;
@@ -73,14 +75,18 @@ void bot::webhook_push::run(const bot::translated_message &message, dpp::cluster
     }
 }
 
+void webhook_request_completed(std::promise<dpp::http_request_completion_t> &promise, dpp::json &json, const dpp::http_request_completion_t &event)
+{
+    if (event.status != 204)
+        std::cerr << "[Warning] Webhook push returned unexpected code " << event.status << std::endl;
+    promise.set_value(event);
+}
+
 void bot::webhook_push::push_request(dpp::snowflake webhook_id, const std::string &webhook_token, const std::string &json, dpp::cluster *bot)
 {
-    std::promise<dpp::http_request_completion_t> _p;
-    std::future<dpp::http_request_completion_t> _f = _p.get_future();
-    bot->post_rest(API_PATH "/webhooks", std::to_string(webhook_id), dpp::utility::url_encode(webhook_token), dpp::m_post, json, [&bot, &_p](dpp::json &json, const dpp::http_request_completion_t &event) {
-        if (event.status != 204)
-            std::cerr << "[Warning] Webhook push returned unexpected code " << event.status << std::endl;
-        _p.set_value(event);
-    });
-    _f.wait();
+    std::promise<dpp::http_request_completion_t> promise;
+    std::future<dpp::http_request_completion_t> future = promise.get_future();
+    bot->post_rest(API_PATH "/webhooks", std::to_string(webhook_id), dpp::utility::url_encode(webhook_token), dpp::m_post, json,
+                   std::bind(&webhook_request_completed, std::ref(promise), std::placeholders::_1, std::placeholders::_2));
+    future.wait();
 }

src/core/webhook_push.h

@@ -26,6 +26,7 @@
 namespace bot {
     class webhook_push {
     public:
+        webhook_push() = delete;
         static void run(const bot::translated_message &message, dpp::cluster *bot);
 
     private:

src/database/file/file.cpp

@@ -27,7 +27,7 @@
 #include <fstream>
 #include <iostream>
 #include <thread>
-#include "database_file.h"
+#include "file.h"
 using namespace bot::database;
 using namespace std::string_literals;
 
@@ -98,7 +98,7 @@ void file::add_channel_target(dpp::snowflake guild_id, dpp::snowflake channel_id
             }
 
             bot::settings::channel channel;
-            cache_get_channel(channel_id, &channel);
+            cache_get_channel(channel_id, channel);
             channel.targets.push_back(target);
             cache_add_channel(guild_id, channel_id);
             guild->channel.push_back(std::move(channel));
@@ -107,7 +107,7 @@ void file::add_channel_target(dpp::snowflake guild_id, dpp::snowflake channel_id
     }
 
     bot::settings::channel channel;
-    cache_get_channel(channel_id, &channel);
+    cache_get_channel(channel_id, channel);
     channel.targets.push_back(target);
     cache_add_channel(guild_id, channel_id);
     m_dataCache.push_back({ guild_id, { std::move(channel) } });
@@ -141,7 +141,7 @@ void file::delete_channel(dpp::snowflake guild_id, dpp::snowflake channel_id)
         }
 
         std::vector<dpp::snowflake> channels;
-        cache_guild(guild_id, &channels);
+        cache_guild(guild_id, channels);
         for (auto channel = channels.begin(); channel != channels.end(); channel++) {
             if (*channel == channel_id) {
                 channels.erase(channel);
@@ -175,7 +175,7 @@ void file::delete_channel_target(dpp::snowflake guild_id, dpp::snowflake channel
             }
 
             bot::settings::channel channel;
-            cache_get_channel(channel_id, &channel);
+            cache_get_channel(channel_id, channel);
             for (auto _target = channel.targets.begin(); _target != channel.targets.end(); _target++) {
                 if (_target->target == target) {
                     channel.targets.erase(_target);
@@ -188,7 +188,7 @@ void file::delete_channel_target(dpp::snowflake guild_id, dpp::snowflake channel
     }
 
     bot::settings::channel channel;
-    cache_get_channel(channel_id, &channel);
+    cache_get_channel(channel_id, channel);
     for (auto _target = channel.targets.begin(); _target != channel.targets.end(); _target++) {
         if (_target->target == target) {
             channel.targets.erase(_target);
@@ -266,7 +266,7 @@ bot::settings::channel file::get_channel(dpp::snowflake guild_id, dpp::snowflake
     }
 
     bot::settings::channel channel;
-    cache_get_channel(channel_id, &channel);
+    cache_get_channel(channel_id, channel);
     return channel;
 }
 
@@ -281,7 +281,7 @@ std::vector<dpp::snowflake> file::get_channels(dpp::snowflake guild_id)
     }
 
     std::vector<dpp::snowflake> channels;
-    cache_guild(guild_id, &channels);
+    cache_guild(guild_id, channels);
     return channels;
 }
 
@@ -330,7 +330,7 @@ std::vector<dpp::snowflake> file::get_guilds()
 {
     const std::lock_guard<std::mutex> guard(m_mutex);
     std::vector<dpp::snowflake> guilds;
-    list_guilds(&guilds);
+    list_guilds(guilds);
     return guilds;
 }
 
@@ -348,7 +348,7 @@ void file::set_channel_source(dpp::snowflake guild_id, dpp::snowflake channel_id
             }
 
             bot::settings::channel channel;
-            cache_get_channel(channel_id, &channel);
+            cache_get_channel(channel_id, channel);
             channel.source = source;
             cache_add_channel(guild_id, channel_id);
             guild->channel.push_back(std::move(channel));
@@ -357,7 +357,7 @@ void file::set_channel_source(dpp::snowflake guild_id, dpp::snowflake channel_id
     }
 
     bot::settings::channel channel;
-    cache_get_channel(channel_id, &channel);
+    cache_get_channel(channel_id, channel);
     channel.source = source;
     cache_add_channel(guild_id, channel_id);
     m_dataCache.push_back({ guild_id, { std::move(channel) } });
@@ -390,16 +390,16 @@ void file::cache_add_channel(dpp::snowflake guild_id, dpp::snowflake channel_id)
     }
 
     std::vector<dpp::snowflake> channels;
-    cache_guild(guild_id, &channels);
+    cache_guild(guild_id, channels);
     if (std::find(channels.begin(), channels.end(), channel_id) == channels.end())
         channels.push_back(channel_id);
 
     m_channelCache.push_back({ guild_id, std::move(channels) });
 }
 
-void file::cache_get_channel(dpp::snowflake channel_id, bot::settings::channel *channel)
+void file::cache_get_channel(dpp::snowflake channel_id, settings::channel &channel)
 {
-    channel->id = channel_id;
+    channel.id = channel_id;
 
     const std::filesystem::path channel_file = m_storagePath / "channel" / (std::to_string(channel_id) + ".json");
 
@@ -418,7 +418,7 @@ void file::cache_get_channel(dpp::snowflake channel_id, bot::settings::channel *
         if (json.is_object()) {
             auto json_channel_source = json.find("source");
             if (json_channel_source != json.end())
-                channel->source = *json_channel_source;
+                channel.source = *json_channel_source;
 
             auto json_channel_target = json.find("target");
             if (json_channel_target != json.end()) {
@@ -433,7 +433,7 @@ void file::cache_get_channel(dpp::snowflake channel_id, bot::settings::channel *
                         else if (json_target->is_string()) {
                             target.webhook = dpp::webhook(*json_target);
                         }
-                        channel->targets.push_back(std::move(target));
+                        channel.targets.push_back(std::move(target));
                     }
                 }
             }
@@ -444,7 +444,7 @@ void file::cache_get_channel(dpp::snowflake channel_id, bot::settings::channel *
     }
 }
 
-void file::cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> *channels)
+void file::cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> &channels)
 {
     const std::filesystem::path guild_file = m_storagePath / "guild" / (std::to_string(guild_id) + ".json");
 
@@ -463,9 +463,9 @@ void file::cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> *cha
         if (json.is_array()) {
             for (auto channel = json.begin(); channel != json.end(); channel++) {
                 if (channel->is_number())
-                    channels->push_back(*channel);
+                    channels.push_back(*channel);
                 else if (channel->is_string())
-                    channels->push_back(std::stoull(std::string(*channel)));
+                    channels.push_back(std::stoull(std::string(*channel)));
             }
         }
     }
@@ -474,7 +474,7 @@ void file::cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> *cha
     }
 }
 
-void file::list_guilds(std::vector<dpp::snowflake> *guilds)
+void file::list_guilds(std::vector<dpp::snowflake> &guilds)
 {
     const std::filesystem::path guild_dir = m_storagePath / "guild";
 
@@ -488,7 +488,7 @@ void file::list_guilds(std::vector<dpp::snowflake> *guilds)
             if (std::all_of(guild_filename.begin(), guild_filename.end(), ::isdigit)) {
                 try {
                     dpp::snowflake guild_id = std::stoull(guild_filename);
-                    guilds->push_back(guild_id);
+                    guilds.push_back(guild_id);
                 }
                 catch (const std::exception &exception) {
                     std::cerr << "[Exception] " << exception.what() << std::endl;

src/database/file/file.h

@@ -26,7 +26,7 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #endif
-#include "database_core.h"
+#include "../../core/database.h"
 
 namespace bot {
     namespace database {
@@ -53,9 +53,9 @@ namespace bot {
 
         private:
             void cache_add_channel(dpp::snowflake guild_id, dpp::snowflake channel_id);
-            void cache_get_channel(dpp::snowflake channel_id, bot::settings::channel *channel);
-            void cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> *channels);
-            void list_guilds(std::vector<dpp::snowflake> *guilds);
+            void cache_get_channel(dpp::snowflake channel_id, bot::settings::channel &channel);
+            void cache_guild(dpp::snowflake guild_id, std::vector<dpp::snowflake> &channels);
+            void list_guilds(std::vector<dpp::snowflake> &guilds);
             void sync_cache();
 #if defined(__unix__)
             int fd;

src/resources/win32/dtranslatebot.rc.in

@@ -0,0 +1,29 @@
+#include <windows.h>
+VS_VERSION_INFO     VERSIONINFO
+FILEVERSION         @dtranslatebot_VERSION_MAJOR@, @dtranslatebot_VERSION_MINOR@, @dtranslatebot_VERSION_PATCH@, 0
+PRODUCTVERSION      @dtranslatebot_VERSION_MAJOR@, @dtranslatebot_VERSION_MINOR@, @dtranslatebot_VERSION_PATCH@, 0
+FILEFLAGSMASK       0x3fL
+FILEFLAGS           0
+FILEOS              VOS_NT_WINDOWS32
+FILETYPE            VFT_APP
+FILESUBTYPE         VFT2_UNKNOWN
+BEGIN
+    BLOCK   "VarFileInfo"
+    BEGIN
+        VALUE   "Translation",  0x0,  1200
+    END
+    BLOCK   "StringFileInfo"
+    BEGIN
+        BLOCK   "040904b0"
+        BEGIN
+            VALUE   "CompanyName",      "Syping"
+            VALUE   "FileDescription",  "Discord Translation Bot"
+            VALUE   "FileVersion",      "@dtranslatebot_VERSION@"
+            VALUE   "InternalName",     "dtranslatebot"
+            VALUE   "LegalCopyright",   "Copyright © 2023-2024 Syping"
+            VALUE   "OriginalFilename", "dtranslatebot.exe"
+            VALUE   "ProductName",      "dtranslatebot"
+            VALUE   "ProductVersion",   "@dtranslatebot_VERSION@"
+        END
+    END
+END

src/systemd/dtranslatebot.service.in

@@ -0,0 +1,13 @@
+[Unit]
+Description=Discord Translation Bot
+After=network.target
+
+[Service]
+User=dtranslatebot
+Group=dtranslatebot
+WorkingDirectory=@dtranslatebot_SERVICE_WORKDIR@
+ExecStart="@CMAKE_INSTALL_FULL_BINDIR@/dtranslatebot" "@CMAKE_INSTALL_FULL_SYSCONFDIR@/dtranslatebot.json"
+Restart=on-abnormal
+
+[Install]
+WantedBy=multi-user.target

src/systemd/dtranslatebot.sysusersd.in

@@ -0,0 +1 @@
+u dtranslatebot - "Discord Translation Bot" "@CMAKE_INSTALL_FULL_LOCALSTATEDIR@/lib/dtranslatebot" -

src/translator/deepl/deepl.cpp

@@ -0,0 +1,116 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#include <dpp/json.h>
+#include <dpp/httpsclient.h>
+#include "deepl.h"
+using namespace bot::translator;
+using namespace std::chrono_literals;
+using namespace std::string_literals;
+
+deepl::deepl(const std::string &hostname, const std::string apiKey) :
+    m_hostname(hostname), m_apiKey(apiKey)
+{
+}
+
+deepl::~deepl()
+{
+}
+
+const std::vector<language> deepl::get_languages()
+{
+    if (!m_languages.languages.empty()) {
+        auto current_time = std::chrono::system_clock::now();
+        auto threshold_time = m_languages.query_time + 24h;
+        if (current_time <= threshold_time)
+            return m_languages.languages;
+    }
+
+    try {
+        dpp::https_client http_request(&m_cluster, m_hostname, 443, "/v2/languages?type=target", "GET", {}, { {"Authorization"s, "DeepL-Auth-Key " + m_apiKey} }, false);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_array()) {
+                m_languages.languages.clear();
+                for (auto json_language = response.begin(); json_language != response.end(); json_language++) {
+                    if (json_language->is_object()) {
+                        language language;
+
+                        auto json_lang_code = json_language->find("language");
+                        if (json_lang_code != json_language->end())
+                            language.code = *json_lang_code;
+
+                        if (language.code.size() > 2)
+                            std::transform(language.code.begin(), language.code.begin() + 2, language.code.begin(), ::tolower);
+                        else
+                            std::transform(language.code.begin(), language.code.end(), language.code.begin(), ::tolower);
+
+                        auto json_lang_name = json_language->find("name");
+                        if (json_lang_name != json_language->end())
+                            language.name = *json_lang_name;
+
+                        if (!language.code.empty() && !language.name.empty())
+                            m_languages.languages.push_back(std::move(language));
+                    }
+                }
+                m_languages.query_time = std::chrono::system_clock::now();
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return m_languages.languages;
+}
+
+const std::string deepl::translate(const std::string &text, const std::string &source, const std::string &target)
+{
+    const dpp::http_headers http_headers = {
+        {"Authorization"s, "DeepL-Auth-Key " + m_apiKey},
+        {"Content-Type"s, "application/json"s}
+    };
+
+    dpp::json json_body = {
+        {"text"s, { text } },
+        {"source_lang"s, source},
+        {"target_lang"s, target},
+    };
+
+    try {
+        dpp::https_client http_request(&m_cluster, m_hostname, 443, "/v2/translate", "POST", json_body.dump(), http_headers, false);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_object()) {
+                auto translations = response.find("translations");
+                if (translations != response.end() && translations->is_array()) {
+                    for (auto translation = translations->begin(); translation != translations->end(); translation++) {
+                        auto tr_text = translation->find("text");
+                        if (tr_text != translation->end())
+                            return *tr_text;
+                    }
+                }
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return text;
+}

src/translator/deepl/deepl.h

@@ -0,0 +1,43 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#ifndef TRANSLATOR_DEEPL_H
+#define TRANSLATOR_DEEPL_H
+
+#include <dpp/cluster.h>
+#include "../../core/translator.h"
+
+namespace bot {
+    namespace translator {
+        class deepl : public translator {
+        public:
+            explicit deepl(const std::string &hostname, const std::string apiKey = {});
+            ~deepl() override;
+            const std::vector<language> get_languages() override;
+            const std::string translate(const std::string &text, const std::string &source, const std::string &target) override;
+
+        private:
+            dpp::cluster m_cluster;
+            std::string m_apiKey;
+            std::string m_hostname;
+            supported_languages m_languages;
+        };
+    }
+}
+
+#endif // TRANSLATOR_DEEPL_H

src/translator/libretranslate/libretranslate.cpp

@@ -18,8 +18,9 @@
 
 #include <dpp/json.h>
 #include <dpp/httpsclient.h>
-#include "translator_libretranslate.h"
+#include "libretranslate.h"
 using namespace bot::translator;
+using namespace std::chrono_literals;
 using namespace std::string_literals;
 
 libretranslate::libretranslate(const std::string &hostname, uint16_t port, const std::string &url, bool tls, const std::string apiKey) :
@@ -33,29 +34,36 @@ libretranslate::~libretranslate()
 
 const std::vector<language> libretranslate::get_languages()
 {
-    std::vector<language> languages;
+    if (!m_languages.languages.empty()) {
+        auto current_time = std::chrono::system_clock::now();
+        auto threshold_time = m_languages.query_time + 24h;
+        if (current_time <= threshold_time)
+            return m_languages.languages;
+    }
 
     try {
-        dpp::https_client http_request(m_hostname, m_port, m_url + "languages", "GET", {}, {}, !m_tls);
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "languages", "GET", {}, {}, !m_tls);
         if (http_request.get_status() == 200) {
             const dpp::json response = dpp::json::parse(http_request.get_content());
             if (response.is_array()) {
-                for (const auto &json_language : response) {
-                    if (json_language.is_object()) {
+                m_languages.languages.clear();
+                for (auto json_language = response.begin(); json_language != response.end(); json_language++) {
+                    if (json_language->is_object()) {
                         language language;
 
-                        auto json_lang_code = json_language.find("code");
-                        if (json_lang_code != json_language.end())
+                        auto json_lang_code = json_language->find("code");
+                        if (json_lang_code != json_language->end())
                             language.code = *json_lang_code;
 
-                        auto json_lang_name = json_language.find("name");
-                        if (json_lang_name != json_language.end())
+                        auto json_lang_name = json_language->find("name");
+                        if (json_lang_name != json_language->end())
                             language.name = *json_lang_name;
 
                         if (!language.code.empty() && !language.name.empty())
-                            languages.push_back(std::move(language));
+                            m_languages.languages.push_back(std::move(language));
                     }
                 }
+                m_languages.query_time = std::chrono::system_clock::now();
             }
         }
     }
@@ -63,7 +71,7 @@ const std::vector<language> libretranslate::get_languages()
         std::cerr << "[Exception] " << exception.what() << std::endl;
     }
 
-    return languages;
+    return m_languages.languages;
 }
 
 const std::string libretranslate::translate(const std::string &text, const std::string &source, const std::string &target)
@@ -83,7 +91,7 @@ const std::string libretranslate::translate(const std::string &text, const std::
         json_body["apiKey"] = m_apiKey;
 
     try {
-        dpp::https_client http_request(m_hostname, m_port, m_url + "translate", "POST", json_body.dump(), http_headers, !m_tls);
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "translate", "POST", json_body.dump(), http_headers, !m_tls);
         if (http_request.get_status() == 200) {
             const dpp::json response = dpp::json::parse(http_request.get_content());
             if (response.is_object()) {

src/translator/libretranslate/libretranslate.h

@@ -20,12 +20,13 @@
 #define TRANSLATOR_LIBRETRANSLATE_H
 
 #include <cstdint>
-#include <string>
-#include "translator_core.h"
+#include <dpp/cluster.h>
+#include "../../core/translator.h"
 
 namespace bot {
     namespace translator {
         class libretranslate : public translator {
+
         public:
             explicit libretranslate(const std::string &hostname, uint16_t port, const std::string &url, bool tls, const std::string apiKey = {});
             ~libretranslate() override;
@@ -33,8 +34,10 @@ namespace bot {
             const std::string translate(const std::string &text, const std::string &source, const std::string &target) override;
 
         private:
+            dpp::cluster m_cluster;
             std::string m_apiKey;
             std::string m_hostname;
+            supported_languages m_languages;
             uint16_t m_port;
             std::string m_url;
             bool m_tls;

src/translator/lingvatranslate/lingvatranslate.cpp

@@ -0,0 +1,99 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#include <dpp/json.h>
+#include <dpp/httpsclient.h>
+#include <dpp/utility.h>
+#include "lingvatranslate.h"
+using namespace bot::translator;
+using namespace std::chrono_literals;
+using namespace std::string_literals;
+
+lingvatranslate::lingvatranslate(const std::string &hostname, uint16_t port, const std::string &url, bool tls) :
+    m_hostname(hostname), m_port(port), m_url(url), m_tls(tls)
+{
+}
+
+lingvatranslate::~lingvatranslate()
+{
+}
+
+const std::vector<language> lingvatranslate::get_languages()
+{
+    if (!m_languages.languages.empty()) {
+        auto current_time = std::chrono::system_clock::now();
+        auto threshold_time = m_languages.query_time + 24h;
+        if (current_time <= threshold_time)
+            return m_languages.languages;
+    }
+
+    try {
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "api/v1/languages/target", "GET", {}, {}, !m_tls);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_object()) {
+                auto languages = response.find("languages");
+                if (languages != response.end()) {
+                    m_languages.languages.clear();
+                    for (auto json_language = languages->begin(); json_language != languages->end(); json_language++) {
+                        if (json_language->is_object()) {
+                            language language;
+
+                            auto json_lang_code = json_language->find("code");
+                            if (json_lang_code != json_language->end())
+                                language.code = *json_lang_code;
+
+                            auto json_lang_name = json_language->find("name");
+                            if (json_lang_name != json_language->end())
+                                language.name = *json_lang_name;
+
+                            if (!language.code.empty() && !language.name.empty())
+                                m_languages.languages.push_back(std::move(language));
+                        }
+                    }
+                    m_languages.query_time = std::chrono::system_clock::now();
+                }
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return m_languages.languages;
+}
+
+const std::string lingvatranslate::translate(const std::string &text, const std::string &source, const std::string &target)
+{
+    try {
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "api/v1/" + source + "/" + target + "/" + dpp::utility::url_encode(text), "GET", {}, {}, !m_tls);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_object()) {
+                auto tr_text = response.find("translation");
+                if (tr_text != response.end())
+                    return *tr_text;
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return text;
+}

src/translator/lingvatranslate/lingvatranslate.h

@@ -0,0 +1,47 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#ifndef TRANSLATOR_LINGVATRANSLATE_H
+#define TRANSLATOR_LINGVATRANSLATE_H
+
+#include <cstdint>
+#include <dpp/cluster.h>
+#include "../../core/translator.h"
+
+namespace bot {
+    namespace translator {
+        class lingvatranslate : public translator {
+
+        public:
+            explicit lingvatranslate(const std::string &hostname, uint16_t port, const std::string &url, bool tls);
+            ~lingvatranslate() override;
+            const std::vector<language> get_languages() override;
+            const std::string translate(const std::string &text, const std::string &source, const std::string &target) override;
+
+        private:
+            dpp::cluster m_cluster;
+            std::string m_hostname;
+            supported_languages m_languages;
+            uint16_t m_port;
+            std::string m_url;
+            bool m_tls;
+        };
+    }
+}
+
+#endif // TRANSLATOR_LINGVATRANSLATE_H

src/translator/mozhi/mozhi.cpp

@@ -0,0 +1,105 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#include <dpp/json.h>
+#include <dpp/httpsclient.h>
+#include <dpp/utility.h>
+#include "mozhi.h"
+using namespace bot::translator;
+using namespace std::chrono_literals;
+using namespace std::string_literals;
+
+mozhi::mozhi(const std::string &hostname, uint16_t port, const std::string &url, bool tls, const std::string &engine) :
+    m_hostname(hostname), m_port(port), m_url(url), m_tls(tls), m_engine(engine)
+{
+}
+
+mozhi::~mozhi()
+{
+}
+
+const std::vector<language> mozhi::get_languages()
+{
+    if (!m_languages.languages.empty()) {
+        auto current_time = std::chrono::system_clock::now();
+        auto threshold_time = m_languages.query_time + 24h;
+        if (current_time <= threshold_time)
+            return m_languages.languages;
+    }
+
+    try {
+        const std::string parameters = dpp::utility::make_url_parameters({
+            {"engine"s, m_engine}
+        });
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "api/target_languages" + parameters, "GET", {}, {}, !m_tls);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_array()) {
+                m_languages.languages.clear();
+                for (auto json_language = response.begin(); json_language != response.end(); json_language++) {
+                    if (json_language->is_object()) {
+                        language language;
+
+                        auto json_lang_code = json_language->find("Id");
+                        if (json_lang_code != json_language->end())
+                            language.code = *json_lang_code;
+
+                        auto json_lang_name = json_language->find("Name");
+                        if (json_lang_name != json_language->end())
+                            language.name = *json_lang_name;
+
+                        if (!language.code.empty() && !language.name.empty())
+                            m_languages.languages.push_back(std::move(language));
+                    }
+                }
+                m_languages.query_time = std::chrono::system_clock::now();
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return m_languages.languages;
+}
+
+const std::string mozhi::translate(const std::string &text, const std::string &source, const std::string &target)
+{
+    try {
+        const std::string parameters = dpp::utility::make_url_parameters({
+            {"engine"s, m_engine},
+            {"from"s, source},
+            {"to"s, target},
+            {"text"s, text},
+        });
+        dpp::https_client http_request(&m_cluster, m_hostname, m_port, m_url + "api/translate" + parameters, "GET", {}, {}, !m_tls);
+        if (http_request.get_status() == 200) {
+            const dpp::json response = dpp::json::parse(http_request.get_content());
+            if (response.is_object()) {
+                auto tr_text = response.find("translated-text");
+                if (tr_text != response.end())
+                    return *tr_text;
+            }
+        }
+    }
+    catch (const std::exception &exception) {
+        std::cerr << "[Exception] " << exception.what() << std::endl;
+    }
+
+    return text;
+}

src/translator/mozhi/mozhi.h

@@ -0,0 +1,48 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#ifndef TRANSLATOR_MOZHI_H
+#define TRANSLATOR_MOZHI_H
+
+#include <cstdint>
+#include <dpp/cluster.h>
+#include "../../core/translator.h"
+
+namespace bot {
+    namespace translator {
+        class mozhi : public translator {
+
+        public:
+            explicit mozhi(const std::string &hostname, uint16_t port, const std::string &url, bool tls, const std::string &engine);
+            ~mozhi() override;
+            const std::vector<language> get_languages() override;
+            const std::string translate(const std::string &text, const std::string &source, const std::string &target) override;
+
+        private:
+            dpp::cluster m_cluster;
+            std::string m_engine;
+            std::string m_hostname;
+            supported_languages m_languages;
+            uint16_t m_port;
+            std::string m_url;
+            bool m_tls;
+        };
+    }
+}
+
+#endif // TRANSLATOR_MOZHI_H

src/translator/stub/stub.cpp

@@ -0,0 +1,39 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#include "stub.h"
+using namespace bot::translator;
+using namespace std::string_literals;
+
+stub::stub()
+{
+}
+
+stub::~stub()
+{
+}
+
+const std::vector<language> stub::get_languages()
+{
+    return { {"a*", "Any Language"} };
+}
+
+const std::string stub::translate(const std::string &text, [[maybe_unused]] const std::string &source, [[maybe_unused]] const std::string &target)
+{
+    return text;
+}

src/translator/stub/stub.h

@@ -0,0 +1,36 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2024 Syping
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* This software is provided as-is, no warranties are given to you, we are not
+* responsible for anything with use of the software, you are self responsible.
+*****************************************************************************/
+
+#ifndef TRANSLATOR_STUB_H
+#define TRANSLATOR_STUB_H
+
+#include "../../core/translator.h"
+
+namespace bot {
+    namespace translator {
+        class stub : public translator {
+        public:
+            explicit stub();
+            ~stub() override;
+            const std::vector<language> get_languages() override;
+            const std::string translate(const std::string &text, const std::string &source, const std::string &target) override;
+        };
+    }
+}
+
+#endif // TRANSLATOR_STUB_H