#pragma once

#include <SFML/Window/WindowHandle.hpp>
#include <SFML/System/Clock.hpp>
#include <stdio.h>
#include <functional>
#include <json/value.h>

#include <sys/un.h>
#include <X11/Xlib.h>

namespace QuickMedia {
    using EventCallbackFunc = std::function<void(const char *event_name)>;
    using VideoPlayerWindowCreateCallback = std::function<void(sf::WindowHandle window)>;

    // Currently this video player launches mpv and embeds it into the QuickMedia window
    class VideoPlayer {
    public:
        enum class Error {
            OK,
            FAIL_TO_LAUNCH_PROCESS,
            FAIL_TO_CREATE_SOCKET,
            FAIL_TO_CONNECT_TIMEOUT,
            FAIL_NOT_CONNECTED,
            FAIL_TO_SEND,
            FAIL_TO_FIND_WINDOW,
            FAIL_TO_FIND_WINDOW_TIMEOUT,
            UNEXPECTED_WINDOW_ERROR,
            FAIL_TO_READ,
            READ_TIMEOUT,
            READ_RESPONSE_ERROR,
            READ_INCORRECT_TYPE,
            INIT_FAILED,
            EXITED
        };

        // @event_callback is called from another thread
        VideoPlayer(bool no_video, bool use_system_mpv_config, bool resume_playback, bool keep_open, EventCallbackFunc event_callback, VideoPlayerWindowCreateCallback window_create_callback, const std::string &resource_root, int monitor_height);
        ~VideoPlayer();
        VideoPlayer(const VideoPlayer&) = delete;
        VideoPlayer& operator=(const VideoPlayer&) = delete;

        // |audio_path| is only set when video and audio are separate files/urls.
        // |start_time| is ignored if |resume_playback| is true.
        Error load_video(const char *path, const char *audio_path, sf::WindowHandle parent_window, const std::string &plugin_name, const std::string &title, const std::string &start_time = "");
        // Should be called every update frame
        Error update();

        // Returns time in seconds
        Error get_time_in_file(double *result);

        Error quit_and_save_watch_later();

        Error set_property(const std::string &property_name, const Json::Value &value);
        Error get_property(const std::string &property_name, Json::Value *result, Json::ValueType result_type);

        int exit_status;
    private:
        Error send_command(const char *cmd, size_t size);
        Error launch_video_process(const char *path, const char *audio_path, sf::WindowHandle parent_window, const std::string &plugin_name, const std::string &title, const std::string &start_time);
        VideoPlayer::Error read_ipc_func();
    private:
        bool no_video;
        bool use_system_mpv_config;
        bool resume_playback;
        bool keep_open;
        pid_t video_process_id;
        bool connected_to_ipc;
        sf::Clock retry_timer;
        int connect_tries;
        int find_window_tries;
        int monitor_height;
        int sockets[2];
        EventCallbackFunc event_callback;
        VideoPlayerWindowCreateCallback window_create_callback;
        sf::WindowHandle window_handle;
        sf::WindowHandle parent_window;
        Display *display;
        unsigned int request_id;
        unsigned int expected_request_id;
        Json::Value request_response_data;

        enum ResponseDataStatus {
            NONE,
            OK,
            ERROR
        };
        ResponseDataStatus response_data_status;
        std::string resource_root;
    };
}