Rename HTTP server files

include/http_server.hpp

@@ -0,0 +1,81 @@
+#ifdef PANDA3DS_ENABLE_HTTP_SERVER
+#pragma once
+
+#include <array>
+#include <atomic>
+#include <condition_variable>
+#include <filesystem>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <queue>
+#include <thread>
+
+#include "helpers.hpp"
+
+enum class HttpActionType { None, Screenshot, Key, TogglePause, Reset, LoadRom, Step };
+
+class Emulator;
+namespace httplib {
+	class Server;
+	struct Response;
+}
+
+// Wrapper for httplib::Response that allows the HTTP server to wait for the response to be ready
+struct DeferredResponseWrapper {
+	DeferredResponseWrapper(httplib::Response& response) : inner_response(response) {}
+
+	httplib::Response& inner_response;
+	std::mutex mutex;
+	std::condition_variable cv;
+	bool ready = false;
+};
+
+// Actions derive from this class and are used to communicate with the HTTP server
+class HttpAction {
+	HttpActionType type;
+
+  public:
+	HttpAction(HttpActionType type) : type(type) {}
+	virtual ~HttpAction() = default;
+
+	HttpActionType getType() const { return type; }
+
+	static std::unique_ptr<HttpAction> createScreenshotAction(DeferredResponseWrapper& response);
+	static std::unique_ptr<HttpAction> createKeyAction(u32 key, bool state);
+	static std::unique_ptr<HttpAction> createLoadRomAction(DeferredResponseWrapper& response, const std::filesystem::path& path, bool paused);
+	static std::unique_ptr<HttpAction> createTogglePauseAction();
+	static std::unique_ptr<HttpAction> createResetAction();
+	static std::unique_ptr<HttpAction> createStepAction(DeferredResponseWrapper& response, int frames);
+};
+
+struct HttpServer {
+	HttpServer(Emulator* emulator);
+	~HttpServer();
+	void processActions();
+
+  private:
+	static constexpr const char* httpServerScreenshotPath = "screenshot.png";
+
+	Emulator* emulator;
+	std::unique_ptr<httplib::Server> server;
+
+	std::thread httpServerThread;
+	std::queue<std::unique_ptr<HttpAction>> actionQueue;
+	std::mutex actionQueueMutex;
+	std::unique_ptr<HttpAction> currentStepAction {};
+
+	std::map<std::string, u32> keyMap;
+	bool paused = false;
+	int framesToRun = 0;
+
+	void startHttpServer();
+	void pushAction(std::unique_ptr<HttpAction> action);
+	std::string status();
+	u32 stringToKey(const std::string& key_name);
+
+	HttpServer(const HttpServer&) = delete;
+	HttpServer& operator=(const HttpServer&) = delete;
+};
+
+#endif  // PANDA3DS_ENABLE_HTTP_SERVER