Network: Add WebService

include/Nazara/Network/WebRequest.hpp

@@ -0,0 +1,75 @@
+// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Network module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_NETWORK_WEBREQUEST_HPP
+#define NAZARA_NETWORK_WEBREQUEST_HPP
+
+#include <Nazara/Network/Config.hpp>
+#include <Nazara/Network/Enums.hpp>
+#include <Nazara/Network/WebRequestResult.hpp>
+#include <NazaraUtils/MovablePtr.hpp>
+#include <functional>
+#include <string>
+#include <unordered_map>
+
+struct curl_slist;
+
+namespace Nz
+{
+	class WebService;
+
+	class NAZARA_NETWORK_API WebRequest
+	{
+		friend WebService;
+
+		public:
+			using DataCallback = std::function<bool(const void* data, std::size_t length)>;
+			using ResultCallback = std::function<void(WebRequestResult&& result)>;
+
+			WebRequest(WebService& owner);
+			WebRequest(const WebRequest&) = delete;
+			WebRequest(WebRequest&&) = default;
+			~WebRequest();
+
+			void ForceProtocol(NetProtocol protocol);
+
+			inline void SetDataCallback(DataCallback callback);
+			inline void SetHeader(std::string header, std::string value);
+			void SetJSonContent(std::string_view encodedJSon);
+			void SetMaximumFileSize(UInt64 maxFileSize);
+			inline void SetResultCallback(ResultCallback callback);
+			void SetServiceName(const std::string_view& serviceName);
+			void SetURL(const std::string& url);
+
+			void SetupGet();
+			void SetupPost();
+
+			WebRequest& operator=(const WebRequest&) = delete;
+			WebRequest& operator=(WebRequest&&) = default;
+
+			static std::unique_ptr<WebRequest> Get(const std::string& url, ResultCallback callback = nullptr);
+			static std::unique_ptr<WebRequest> Post(const std::string& url, ResultCallback callback = nullptr);
+
+		private:
+			inline bool OnBodyResponse(const char* data, std::size_t length);
+			CURL* Prepare();
+			inline void TriggerCallback();
+			inline void TriggerCallback(std::string errorMessage);
+
+			std::string m_responseBody;
+			std::unordered_map<std::string, std::string> m_headers;
+			WebService& m_webService;
+			DataCallback m_dataCallback;
+			MovablePtr<CURL> m_curlHandle;
+			MovablePtr<curl_slist> m_headerList;
+			ResultCallback m_resultCallback;
+			bool m_isUserAgentSet;
+	};
+}
+
+#include <Nazara/Network/WebRequest.inl>
+
+#endif // NAZARA_NETWORK_WEBREQUEST_HPP