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 { UserConnectionInfo } from "../models/UserConnectionInfo";

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

    private onGameError(game: MancalaGame, error: any) {
        console.error(error);
        const crashFileName = GameCrashManager.logGameCrash(error, game);
        console.info(`Game crash saved to file : ${crashFileName}`);
        this.rtmt.sendMessage(game.player1Id, channel_on_game_crashed, error);
        this.rtmt.sendMessage(game.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.player1Id, channel_on_game_user_leave, userKey);
            this.rtmt.sendMessage(game.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) {
        const game = new CommonMancalaGame(generateKey(), userKey1, userKey2);
        const random = Math.random();
        game.turnPlayerId = random > 0.5 ? userKey1 : userKey2;

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

    public startGame(game: MancalaGame) {
        this.rtmt.sendMessage(game.player1Id, channel_on_game_start, game);
        this.rtmt.sendMessage(game.player2Id, channel_on_game_start, game);
        this.sendUserConnectionInfo(game, game.player1Id);
        this.sendUserConnectionInfo(game, game.player2Id);
    }

    public sendUserConnectionInfo(game: MancalaGame, playerId: string, isOnline?: boolean) {
        //todo: reimplement when watch game feature added
        const _isOnline = isOnline === undefined ? this.rtmt.isClientOnline(playerId) : isOnline;
        const otherUser = game.player1Id === playerId ? game.player2Id : game.player1Id;
        const userConnectionInfo: UserConnectionInfo = { userId: playerId, isOnline: _isOnline };
        this.rtmt.sendMessage(otherUser, channel_on_user_connection_change, userConnectionInfo);
    }

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

    private listenUserConnectionChange() {
        this.rtmt.listenOnClientConnectionChange((clientId: string, isOnline: boolean) => {
            const game = this.gameStore.getGameByUser(clientId);
            if (game) {
                this.sendUserConnectionInfo(game, clientId, isOnline);
                if (isOnline) {
                    const otherUser = game.player1Id === clientId ? game.player2Id : game.player1Id;
                    this.sendUserConnectionInfo(game, otherUser);
                }
            }
        });
    }
}