From 95f86f4ce18e65d45894d5a130c4bdaf8ecbaac5 Mon Sep 17 00:00:00 2001
From: Egor Pugin <egor.pugin@gmail.com>
Date: Wed, 4 Jul 2018 19:11:03 +0300
Subject: Implement CurlHttpClient.

---
 include/tgbot/net/HttpClient.h | 64 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 61 insertions(+), 3 deletions(-)

(limited to 'include/tgbot/net')

diff --git a/include/tgbot/net/HttpClient.h b/include/tgbot/net/HttpClient.h
index 8d67891..1375785 100644
--- a/include/tgbot/net/HttpClient.h
+++ b/include/tgbot/net/HttpClient.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2015 Oleg Morozenkov
+ * Copyright (c) 2018 Egor Pugin
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -26,6 +27,9 @@
 #include <string>
 
 #include <boost/asio.hpp>
+#ifdef HAVE_CURL
+#include <curl/curl.h>
+#endif
 
 #include "tgbot/net/Url.h"
 #include "tgbot/net/HttpReqArg.h"
@@ -40,11 +44,30 @@ namespace TgBot {
  */
 class HttpClient {
 
+public:
+    virtual ~HttpClient() = default;
+
+    /**
+     * @brief Sends a request to the url.
+     *
+     * If there's no args specified, a GET request will be sent, otherwise a POST request will be sent.
+     * If at least 1 arg is marked as file, the content type of a request will be multipart/form-data, otherwise it will be application/x-www-form-urlencoded.
+     */
+    virtual std::string makeRequest(const Url& url, const std::vector<HttpReqArg>& args) const = 0;
+};
+
+/**
+ * @brief This class makes http requests via boost::asio.
+ *
+ * @ingroup net
+ */
+class BoostHttpClient : public HttpClient {
+
 public:
 	/**
 	 * @brief Returns instance which lives during all application lifetime.
 	 */
-	static HttpClient& getInstance();
+    static BoostHttpClient& getInstance();
 
 	/**
 	 * @brief Sends a request to the url.
@@ -52,12 +75,47 @@ public:
 	 * If there's no args specified, a GET request will be sent, otherwise a POST request will be sent.
 	 * If at least 1 arg is marked as file, the content type of a request will be multipart/form-data, otherwise it will be application/x-www-form-urlencoded.
 	 */
-	std::string makeRequest(const Url& url, const std::vector<HttpReqArg>& args);
+    std::string makeRequest(const Url& url, const std::vector<HttpReqArg>& args) const override;
 
 private:
-	boost::asio::io_service _ioService;
+    mutable boost::asio::io_service _ioService;
 };
 
+#ifdef HAVE_CURL
+
+/**
+ * @brief This class makes http requests via libcurl.
+ *
+ * @ingroup net
+ */
+class CurlHttpClient : public HttpClient {
+
+public:
+
+    /**
+     * @brief Raw curl settings storage for fine tuning.
+     */
+    CURL* curlSettings;
+
+    CurlHttpClient();
+    ~CurlHttpClient();
+
+    /**
+     * @brief Returns instance which lives during all application lifetime.
+     */
+    static CurlHttpClient& getInstance();
+
+    /**
+     * @brief Sends a request to the url.
+     *
+     * If there's no args specified, a GET request will be sent, otherwise a POST request will be sent.
+     * If at least 1 arg is marked as file, the content type of a request will be multipart/form-data, otherwise it will be application/x-www-form-urlencoded.
+     */
+    std::string makeRequest(const Url& url, const std::vector<HttpReqArg>& args) const override;
+};
+
+#endif
+
 }
 
 #endif //TGBOT_HTTPCLIENT_H
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