add http_header class and bot::http namespace

src/core/http_headers.cpp

@@ -0,0 +1,87 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2026 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 "http_headers.h"
+using namespace bot::http;
+
+http_headers::http_headers() {
+    instance = nullptr;
+}
+
+http_headers::http_headers(const std::string &field, const std::string &value) {
+    instance = nullptr;
+    add(field, value);
+}
+
+http_headers::http_headers(const http_header &header) {
+    instance = nullptr;
+    add(header);
+}
+
+http_headers::http_headers(const std::initializer_list<http_header> &headers) {
+    instance = nullptr;
+    add(headers);
+}
+
+http_headers::http_headers(const std::vector<http_header> &headers) {
+    instance = nullptr;
+    add(headers);
+}
+
+http_headers::~http_headers() {
+    curl_slist_free_all(instance);
+}
+
+void http_headers::add(const std::string &field, const std::string &value) {
+    const std::string header = field + ": " + value;
+    curl_slist *headers = curl_slist_append(instance, header.c_str());
+    if (!headers)
+        throw std::bad_alloc();
+    instance = headers;
+}
+
+void http_headers::add(const http_header &header) {
+    add(header.first, header.second);
+}
+
+void http_headers::add(const std::initializer_list<http_header> &headers) {
+    for (const auto &header : headers)
+        add(header);
+}
+
+void http_headers::add(const std::vector<http_header> &headers) {
+    for (const auto &header : headers)
+        add(header);
+}
+
+void http_headers::remove(const std::string &field) {
+    const std::string header = field + ":";
+    curl_slist *headers = curl_slist_append(instance, header.c_str());
+    if (!headers)
+        throw std::bad_alloc();
+    instance = headers;
+}
+
+void http_headers::remove(const std::vector<std::string> &fields) {
+    for (const auto &field : fields)
+        remove(field);
+}
+
+const curl_slist* http_headers::data() const {
+    return instance;
+}

src/core/http_headers.h

@@ -0,0 +1,53 @@
+/*****************************************************************************
+* dtranslatebot Discord Translate Bot
+* Copyright (C) 2026 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 HTTP_HEADERS_H
+#define HTTP_HEADERS_H
+#include <curl/curl.h>
+#include <initializer_list>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace bot {
+    namespace http {
+        typedef std::pair<std::string, std::string> http_header;
+
+        class http_headers {
+        public:
+            http_headers();
+            http_headers(const std::string &field, const std::string &value);
+            http_headers(const http_header &header);
+            http_headers(const std::initializer_list<http_header> &headers);
+            http_headers(const std::vector<http_header> &headers);
+            ~http_headers();
+            void add(const std::string &field, const std::string &value);
+            void add(const http_header &header);
+            void add(const std::initializer_list<http_header> &headers);
+            void add(const std::vector<http_header> &headers);
+            void remove(const std::string &field);
+            void remove(const std::vector<std::string> &fields);
+            const curl_slist* data() const;
+
+        private:
+            curl_slist *instance;
+        };
+    }
+}
+
+#endif // HTTP_HEADERS_H

src/core/http_request.cpp

@@ -17,6 +17,7 @@
 *****************************************************************************/
 
 #include "http_request.h"
+using namespace bot::http;
 
 http_request::http_request() {
     instance = curl_easy_init();
@@ -24,56 +25,23 @@ http_request::http_request() {
         throw std::bad_alloc();
 }
 
-const http_response http_request::get(const std::string &url, const dpp::http_headers &headers) {
+const http_response http_request::get(const std::string &url, const http_headers &headers) {
     http_response response;
     curl_easy_setopt(instance, CURLOPT_URL, url.c_str());
-    curl_slist *header_slist = nullptr;
-    if (!headers.empty()) {
-        for (const auto &header : headers) {
-            curl_slist *new_header_slist = curl_slist_append(header_slist, std::string(header.first + ": " + header.second).c_str());
-            if (!new_header_slist) {
-                curl_slist_free_all(header_slist);
-                throw std::bad_alloc();
-            }
-            header_slist = new_header_slist;
-        }
-    }
-    if (header_slist)
-        curl_easy_setopt(instance, CURLOPT_HTTPHEADER, header_slist);
+    curl_easy_setopt(instance, CURLOPT_HTTPHEADER, headers.data());
     curl_easy_setopt(instance, CURLOPT_WRITEDATA, &response.content);
     curl_easy_setopt(instance, CURLOPT_WRITEFUNCTION, &writer);
     CURLcode result = curl_easy_perform(instance);
     if (result == CURLE_OK)
         curl_easy_getinfo(instance, CURLINFO_RESPONSE_CODE, &response.status);
     curl_easy_reset(instance);
-    curl_slist_free_all(header_slist);
     return response;
 }
 
-const http_response http_request::post(const std::string &url, const std::string &content, const std::string &content_type, const dpp::http_headers &headers) {
+const http_response http_request::post(const std::string &url, const std::string &content, const http_headers &headers) {
     http_response response;
     curl_easy_setopt(instance, CURLOPT_URL, url.c_str());
-    curl_slist *header_slist = nullptr;
-    if (!content_type.empty()) {
-        curl_slist *new_header_slist = curl_slist_append(header_slist, std::string("Content-Type: " + content_type).c_str());
-        if (!new_header_slist) {
-            curl_slist_free_all(header_slist);
-            throw std::bad_alloc();
-        }
-        header_slist = new_header_slist;
-    }
-    if (!headers.empty()) {
-        for (const auto &header : headers) {
-            curl_slist *new_header_slist = curl_slist_append(header_slist, std::string(header.first + ": " + header.second).c_str());
-            if (!new_header_slist) {
-                curl_slist_free_all(header_slist);
-                throw std::bad_alloc();
-            }
-            header_slist = new_header_slist;
-        }
-    }
-    if (header_slist)
-        curl_easy_setopt(instance, CURLOPT_HTTPHEADER, header_slist);
+    curl_easy_setopt(instance, CURLOPT_HTTPHEADER, headers.data());
     curl_easy_setopt(instance, CURLOPT_POSTFIELDS, content.data());
     curl_easy_setopt(instance, CURLOPT_POSTFIELDSIZE, content.size());
     curl_easy_setopt(instance, CURLOPT_WRITEDATA, &response.content);
@@ -82,7 +50,6 @@ const http_response http_request::post(const std::string &url, const std::string
     if (result == CURLE_OK)
         curl_easy_getinfo(instance, CURLINFO_RESPONSE_CODE, &response.status);
     curl_easy_reset(instance);
-    curl_slist_free_all(header_slist);
     return response;
 }
 

src/core/http_request.h

@@ -20,21 +20,24 @@
 #define HTTP_REQUEST_H
 #include <curl/curl.h>
 #include <cstdint>
-#include <dpp/httpsclient.h>
+#include "http_headers.h"
 #include "http_response.h"
 
-class http_request
-{
-public:
-    http_request();
-    ~http_request();
-    const http_response get(const std::string &url, const dpp::http_headers &headers = {});
-    const http_response post(const std::string &url, const std::string &content, const std::string &content_type, const dpp::http_headers &headers = {});
-    static std::string legacy_url(const std::string &hostname, uint16_t port, const std::string &url, bool tls);
+namespace bot {
+    namespace http {
+        class http_request {
+        public:
+            http_request();
+            ~http_request();
+            const http_response get(const std::string &url, const http_headers &headers = {});
+            const http_response post(const std::string &url, const std::string &content, const http_headers &headers = {});
+            static std::string legacy_url(const std::string &hostname, uint16_t port, const std::string &url, bool tls);
 
-private:
-    static size_t writer(char *source, size_t size, size_t nmemb, std::string *target);
-    CURL *instance;
-};
+        private:
+            static size_t writer(char *source, size_t size, size_t nmemb, std::string *target);
+            CURL *instance;
+        };
+    }
+}
 
 #endif // HTTP_REQUEST_H

src/core/http_response.h

@@ -20,10 +20,13 @@
 #define HTTP_RESPONSE_H
 #include <string>
 
-struct http_response
-{
-    std::string content;
-    long status;
-};
+namespace bot {
+    namespace http {
+        struct http_response {
+            std::string content;
+            long status;
+        };
+    }
+}
 
 #endif // HTTP_RESPONSE_H

src/translator/deepl/deepl.cpp

@@ -17,9 +17,10 @@
 *****************************************************************************/
 
 #include <dpp/json.h>
-#include <dpp/httpsclient.h>
+#include <iostream>
 #include "../../core/http_request.h"
 #include "deepl.h"
+using namespace bot::http;
 using namespace bot::translator;
 using namespace std::chrono_literals;
 
@@ -43,7 +44,8 @@ const std::vector<language> deepl::get_languages()
 
     try {
         http_request request;
-        http_response response = request.get(http_request::legacy_url(m_hostname, 443, "/v2/languages?type=target", true), { {"Authorization", "DeepL-Auth-Key " + m_apiKey} });
+        http_response response = request.get(http_request::legacy_url(m_hostname, 443, "/v2/languages?type=target", true),
+                                             {{"Authorization", "DeepL-Auth-Key " + m_apiKey}});
         if (response.status == 200) {
             const dpp::json json_response = dpp::json::parse(response.content);
             if (json_response.is_array()) {
@@ -91,7 +93,8 @@ const std::string deepl::translate(const std::string &text, const std::string &s
 
     try {
         http_request request;
-        http_response response = request.post(http_request::legacy_url(m_hostname, 443, "/v2/translate", true), json_body.dump(), "application/json", { {"Authorization", "DeepL-Auth-Key " + m_apiKey} });
+        http_response response = request.post(http_request::legacy_url(m_hostname, 443, "/v2/translate", true), json_body.dump(),
+                                              {{"Authorization", "DeepL-Auth-Key " + m_apiKey}, {"Content-Type", "application/json"}});
         if (response.status == 200) {
             const dpp::json json_response = dpp::json::parse(response.content);
             if (json_response.is_object()) {

src/translator/deepl/deepl.h

@@ -19,7 +19,6 @@
 #ifndef TRANSLATOR_DEEPL_H
 #define TRANSLATOR_DEEPL_H
 
-#include <dpp/cluster.h>
 #include "../../core/translator.h"
 
 namespace bot {

src/translator/libretranslate/libretranslate.cpp

@@ -17,9 +17,10 @@
 *****************************************************************************/
 
 #include <dpp/json.h>
-#include <dpp/httpsclient.h>
+#include <iostream>
 #include "../../core/http_request.h"
 #include "libretranslate.h"
+using namespace bot::http;
 using namespace bot::translator;
 using namespace std::chrono_literals;
 
@@ -77,10 +78,6 @@ const std::vector<language> libretranslate::get_languages()
 
 const std::string libretranslate::translate(const std::string &text, const std::string &source, const std::string &target)
 {
-    const dpp::http_headers http_headers = {
-        {"Content-Type", "application/json"}
-    };
-
     dpp::json json_body = {
         {"q", text},
         {"source", source.empty() ? "auto" : source},
@@ -93,7 +90,8 @@ const std::string libretranslate::translate(const std::string &text, const std::
 
     try {
         http_request request;
-        http_response response = request.post(http_request::legacy_url(m_hostname, m_port, m_url + "translate", m_tls), json_body.dump(), "application/json");
+        http_response response = request.post(http_request::legacy_url(m_hostname, m_port, m_url + "translate", m_tls), json_body.dump(),
+                                              {{"Content-Type", "application/json"}});
         if (response.status == 200) {
             const dpp::json json_response = dpp::json::parse(response.content);
             if (json_response.is_object()) {

src/translator/libretranslate/libretranslate.h

@@ -20,7 +20,6 @@
 #define TRANSLATOR_LIBRETRANSLATE_H
 
 #include <cstdint>
-#include <dpp/cluster.h>
 #include "../../core/translator.h"
 
 namespace bot {

src/translator/lingvatranslate/lingvatranslate.cpp

@@ -17,10 +17,11 @@
 *****************************************************************************/
 
 #include <dpp/json.h>
-#include <dpp/httpsclient.h>
 #include <dpp/utility.h>
+#include <iostream>
 #include "../../core/http_request.h"
 #include "lingvatranslate.h"
+using namespace bot::http;
 using namespace bot::translator;
 using namespace std::chrono_literals;
 

src/translator/lingvatranslate/lingvatranslate.h

@@ -20,7 +20,6 @@
 #define TRANSLATOR_LINGVATRANSLATE_H
 
 #include <cstdint>
-#include <dpp/cluster.h>
 #include "../../core/translator.h"
 
 namespace bot {

src/translator/mozhi/mozhi.cpp

@@ -17,10 +17,11 @@
 *****************************************************************************/
 
 #include <dpp/json.h>
-#include <dpp/httpsclient.h>
 #include <dpp/utility.h>
+#include <iostream>
 #include "../../core/http_request.h"
 #include "mozhi.h"
+using namespace bot::http;
 using namespace bot::translator;
 using namespace std::chrono_literals;
 

src/translator/mozhi/mozhi.h

@@ -20,7 +20,6 @@
 #define TRANSLATOR_MOZHI_H
 
 #include <cstdint>
-#include <dpp/cluster.h>
 #include "../../core/translator.h"
 
 namespace bot {