import { CommonMancalaGame, MancalaGame } from "mancala.js";
import { RTMT } from "../rtmt/rtmt";
import { GameStore } from "./gamestore/GameStore";
import { generateKey } from "../util/key_factory";
import {
    channel_game_move,
    channel_leave_game,
    channel_new_game,
    channel_on_game_crashed,
    channel_on_game_start,
    channel_on_game_update,
    channel_on_game_user_leave,
    channel_on_user_connection_change
} from "../consts/channel_names";
import { GameMove } from "../models/GameMove";
import { GameCrashManager } from "./GameCrashManager";
import { MatchMaker } from "../matchmaker/MatchMaker";
import { Game, GameUsersConnectionInfo } from "../models/Game";

export class GameManager {
    gameStore: GameStore;
    rtmt: RTMT;
    matchMaker: MatchMaker;

    constructor(params: { gameStore: GameStore, rtmt: RTMT, matchMaker: MatchMaker }) {
        this.gameStore = params.gameStore;
        this.rtmt = params.rtmt;
        this.matchMaker = params.matchMaker;
        this.initialize();
    }

    private initialize() {
        this.listenOnPlayersPaired();
        this.listenRtmtMessages();
        this.listenUserConnectionChange();
    }

    private listenRtmtMessages() {
        this.rtmt.listenMessage(channel_new_game, (userKey: string, message: Object) => {
            this.matchMaker.join(userKey);
        });

        this.rtmt.listenMessage(channel_game_move, (userKey: string, message: Object) => {
            this.onGameMove(userKey, message as GameMove);
        });

        this.rtmt.listenMessage(channel_leave_game, (userKey: string, message: Object) => {
            this.onPlayerLeave(userKey)
        });
    }

    private onGameMove(userKey: string, gameMove: GameMove) {
        const game = this.gameStore.getGameByUser(userKey);
        if (game) {
            try {
                game.mancalaGame.moveByPlayerPit(userKey, gameMove.index);
                this.rtmt.sendMessage(game.mancalaGame.player1Id, channel_on_game_update, game);
                this.rtmt.sendMessage(game.mancalaGame.player2Id, channel_on_game_update, game);
                if (game.mancalaGame.state == "ended") {
                    this.deleteGame(game);
                }
            } catch (err: any) {
                this.onGameError(game, err)
            }
        } else {
            console.log("Game not found!");
        }
    }

    private onGameError(game: Game, error: any) {
        console.error(error);
        const crashFileName = GameCrashManager.logGameCrash(error, game);
        console.info(`Game crash saved to file : ${crashFileName}`);
        this.rtmt.sendMessage(game.mancalaGame.player1Id, channel_on_game_crashed, error);
        this.rtmt.sendMessage(game.mancalaGame.player2Id, channel_on_game_crashed, error);
    }

    private onPlayerLeave(userKey: string) {
        const game = this.gameStore.getGameByUser(userKey);
        if (game) {
            this.deleteGame(game);
            this.rtmt.sendMessage(game.mancalaGame.player1Id, channel_on_game_user_leave, userKey);
            this.rtmt.sendMessage(game.mancalaGame.player2Id, channel_on_game_user_leave, userKey);
        }
    }

    private listenOnPlayersPaired() {
        this.matchMaker.listenOnPlayersPaired((player1Id: string, player2Id: string) => {
            const game = this.createMancalaGame(player1Id, player2Id);
            this.startGame(game);
        });
    }

    public fireOnPlayerConnected(playerId: string) {}

    public createMancalaGame(userKey1: string, userKey2: string): Game {
        const mancalaGame = new CommonMancalaGame(generateKey(), userKey1, userKey2);
        const random = Math.random();
        mancalaGame.turnPlayerId = random > 0.5 ? userKey1 : userKey2;

        const game: Game = {
            id: mancalaGame.id,
            mancalaGame,
            gameUsersConnectionInfo: this.getGameUsersConnectionInfoFromUsers(mancalaGame.player1Id, mancalaGame.player2Id),
        };

        this.gameStore.set(game.id, game);
        this.gameStore.setGameByUser(userKey1, game);
        this.gameStore.setGameByUser(userKey2, game);
        return game;
    }

    public getGameUsersConnectionInfo(game: Game): GameUsersConnectionInfo {
        return this.getGameUsersConnectionInfoFromUsers(game.mancalaGame.player1Id, game.mancalaGame.player2Id);
    }

    public getGameUsersConnectionInfoFromUsers(user1Id: string, user2Id: string): GameUsersConnectionInfo {
        const isPlayer1Online = this.rtmt.isClientOnline(user1Id);
        const isPlayer2Online = this.rtmt.isClientOnline(user2Id);
        return {
            user1ConnectionInfo: { userId: user1Id, isOnline: isPlayer1Online },
            user2ConnectionInfo: { userId: user2Id, isOnline: isPlayer2Online }
        };
    }

    public startGame(game: Game) {
        const mancalaGame = game.mancalaGame;
        this.rtmt.sendMessage(mancalaGame.player1Id, channel_on_game_start, game);
        this.rtmt.sendMessage(mancalaGame.player2Id, channel_on_game_start, game);
        this.sendUserConnectionInfo(game);
        this.sendUserConnectionInfo(game);
    }

    public sendUserConnectionInfo(game: Game) {
        const user1 = game.mancalaGame.player1Id;
        const user2 = game.mancalaGame.player2Id;
        const gameUsersConnectionInfo = this.getGameUsersConnectionInfo(game);

        //todo: reimplement when watch game feature added
        this.rtmt.sendMessage(user1, channel_on_user_connection_change, gameUsersConnectionInfo);
        this.rtmt.sendMessage(user2, channel_on_user_connection_change, gameUsersConnectionInfo);
    }

    public deleteGame(game: Game) {
        if (game) {
            this.gameStore.removeGameByPlayer(game.mancalaGame.player1Id);
            this.gameStore.removeGameByPlayer(game.mancalaGame.player2Id);
        }
    }

    private listenUserConnectionChange() {
        this.rtmt.listenOnClientConnectionChange((clientId: string, isOnline: boolean) => {
            const game = this.gameStore.getGameByUser(clientId);
            if (game) this.sendUserConnectionInfo(game);
        });
    }
}