import express from 'express'
import cookieParser from 'cookie-parser'
import {TicTacToe, GameState} from './tictactoe.js'

const app = express()
app.use(cookieParser())
const port = 3000

function getUserId(req, res) {
    let userid = req.cookies.userid
    if (userid == undefined) {
        userid = crypto.randomUUID()
        res.cookie('userid', userid)
    }
    return userid
}

app.get('/join', (req, res) => {
    const userid = getUserId(req, res)
    for (let game of Object.values(games)) {
        if (game.isWaiting()) {
            game.join(userid)
            res.json(game.toJson(userid))
            return
        }
    }
    // No waiting game found - create a new one
    let game = new TicTacToe(nextGameId)
    games[nextGameId] = game
    nextGameId += 1
    
    game.join(userid)
    res.json(game.toJson(userid))
})