import {Room} from "./room"
import {Client} from "./client"
import {log} from "./logger"
import fs = require("fs");
import SocketIO = require("socket.io");

export class ConnectionManager {

	static Instance: ConnectionManager;
	io: SocketIO.Server;
	rooms: Room[];

	constructor(io: SocketIO.Server) {
		ConnectionManager.Instance = this;

		this.io = io;
		this.rooms = [];

		let drawSettings = {
			project: {
				name: 'global-draw',
				playerCounts: null
			},
			always: true,
			spectators: true
		};
		let drawRoom = this.createRoom(drawSettings, '');
		drawRoom.id = 'global-draw-room';
		drawRoom.startGame();
		this.rooms.push(drawRoom);
	}

	static RoomListByGame(game: string): Room[] {
		return this.Instance.rooms.filter(l => l.gameName === game)
	}

	static ClientListByClientId(clientId: string): Client[] {
		let room = Room.getByClientId(clientId, this.Instance.rooms);

		return room.clients
	}

	newSocket(socket: SocketIO.Socket): void {
		let client = new Client(socket, this);
		log('connection', client)
	}

	roomListUpdate(): void {
		this.io.sockets.emit('room-list', serializeObject(this.rooms))
	}

	createRoom(settings: Settings.Global | any, name: string): Room {
		let roomId = Room.generateCode(10);
		// @ts-ignore
		let room = new Room(name, roomId, settings, this.io);

		this.rooms.push(room);
		this.roomListUpdate();

		return room
	}

	deleteRoom(room: Room): void {
		this.rooms.splice(this.rooms.indexOf(room), 1);
		this.roomListUpdate();

		log('lobby-deleted', null, room)
	}

	//Starts the game of a room with given id
	startGame(client: Client, _roomId: string): void {
		let lobby = Room.getByClientId(client.id, this.rooms);
		if (!lobby) return;

		if (!lobby.hasStarted) {
			lobby.startGame();
			log('game-started', client, lobby)
		}

		this.io.sockets.emit('room-list', serializeObject(this.rooms))
	}

	//Stops the game of a lobby with given id
	stopGame(client: Client, lobbyId: string): void {
		let lobby = Room.getByRoomId(lobbyId, this.rooms);
		if (!lobby) return;

		lobby.stopGame(client);
		log('game-stopped', client, lobby)
	}


	//Saves user feedback to a file
	saveFeedbackToFile(client: Client, content: string): void {
		let date = new Date(Date.now()).toString();
		let path = "feedback/" + client.game + '.txt';
		let saveToFile = (content: string) => {
			fs.writeFile(path, content, (err: any) => {
				if (err)
					log('save-error', client, null, err.message);
				else
					log('feedback', client, null, path)
			});
		};
		if (fs.existsSync(path)) {
			fs.readFile(path, 'utf8', (err, data) => {
				if (err)
					log('load-error', client, null, err.message);
				else {
					log('load-success', client, null);
					let newContent = data + '\n\n\n\n' + date + '\n\n' + content;
					saveToFile(newContent)
				}
			})
		} else {
			saveToFile(date + '\n' + content)
		}
	}

	//Removes a disconnected client from all references
	disconnected(client: Client): void {
		let room = Room.getByClientId(client.id, this.rooms);

		if (room)
			client.leaveRoom(room.id);

		log('disconnection', client)
	}

}

export function serializeObject(object: any): any {
	function serialize(obj: any) {
		if (!obj)
			return obj;
		if (obj.serialized)
			return obj.serialized;
		else if (obj instanceof Array) {
			let content = [];
			obj.forEach(o => {
				content.push(serialize(o))
			});
			return content
		}
		return obj
	}

	return serialize(object)
}