const express = require('express');
const { createServer } = require('node:http');
const { join } = require('node:path');
                                            
const Chance = require('chance');
const mongoose = require("mongoose");

const app = express();
const server = createServer(app);
const io = require('socket.io')(server, {
    cors: { origin: "*" }
});

const Game = require("./schemas/game-schema");
const GameLogic = require('./game-logic.js');

const databaseUrl = "mongodb://dama:dama@localhost:27017/dama";

const chance = new Chance();

mongoose.connect(databaseUrl, { useUnifiedTopology: true });

io.on('connection', (socket) => {
  console.log('a user ' + socket.id + ' connected');

  socket.on('disconnect', async () => {
    console.log('user disconnected');
    await Game.deleteMany({owner:socket.id});
  })

  socket.on('leaveGame', async () => {
    await Game.deleteMany({owner:socket.id});
  })

  socket.on('joinWithCodeRequest', async ({userName, inviteCode}, callback) => {
    const game = await Game.findOne({"inviteCode":inviteCode});

    if(!game){
      callback({status:"error", message:"Nebyly nalezeny žádné hry"});
      return;
    }

    if(game.player1 != null && game.player2 != null){
      callback({status:"error", message:"Místnost je plná"})
    }

      other_player = null;

    if(game.player1 == null){
      game.player1 = socket.id;
      game.player1_name = userName;

      other_player = game.player2;
    }else{
      game.player2 = socket.id;
      game.player2_name = userName;
    
      other_player = game.player1;
    }

    await game.save();


    const player1 = game.player1;
    const player1_name = game.player1_name;
    const player2 = game.player2_name;
    const player2_name = game.player2_name;
    const playerSwap = game.playerSwap;

    callback({status:"success", player1:player1, player1_name:player1_name, player2:player2, player2_name:player2_name, playerSwap:playerSwap})
    io.sockets.sockets.get(other_player).emit('playerJoinGame', {player1, player1_name, player2, player2_name, playerSwap});
    socket.join(game.roomId);


    

  })

  socket.on('createGameRequest', ({userName}, callback) => {

    const roomId = chance.guid();
    const inviteCode = chance.string({ length: 5, casing: 'upper', alpha: true, numeric: true, symbols: false });

    const gameLogic = new GameLogic();
    gameLogic.generateDefaultPositions();
    const pieceList = gameLogic.pieceList;

    socket.join(roomId);
    newGame = new Game({
        owner: socket.id,
        player1: socket.id,
        player1_name: userName,
        player2: null,
        player2_name: null,
        channel: roomId,
        playerSwap: false,
        public: false,
        started: false,
        inviteCode: inviteCode,
        currentPlayer: null,
        missedOportunities: [],
        pieces: pieceList
    });

    newGame.save();
    callback({ status: "success",  inviteCode:inviteCode, socket:socket.id, roomId:roomId});
    
  });

  socket.on('joinGameRequest', () => {
    
  });

  socket.on('randomJoinRequest', () => {
    
  });
});

server.listen(3000, () => {
  console.log('server running at http://localhost:3000');
});