//===== Constructor

const Controls = function() {
    this.moves = 0;
    this.names = {};
    this.timers = {};
    this.currentWinningGuess = Infinity;

    this.drawGuesses();

    document.addEventListener('L-connected', this.msgConnected.bind(this));
    document.addEventListener('L-move', this.msgMove.bind(this));

    // Message handlers: "Local message" and "Global message"
    // document.addEventListener('G-move', this.msgMove.bind(this));
    // document.addEventListener('G-win', this.msgWin.bind(this));
    document.addEventListener('G-attempt', this.msgAttempt.bind(this)); 
    document.addEventListener('G-guess', this.msgGuess.bind(this)); 
    document.addEventListener('G-skip', this.msgSkip.bind(this));
    document.addEventListener('G-start', this.msgStart.bind(this));
    document.addEventListener('G-stop', this.msgStop.bind(this));
    document.addEventListener('G-players', this.msgPlayers.bind(this)); 
 

    // Click handlers
    document.getElementById('controls-start').addEventListener('click', this.onClickStart.bind(this));
    document.getElementById('controls-stop').addEventListener('click', this.onClickStop.bind(this));
    document.getElementById('controls-walls').addEventListener('click', this.onClickWalls.bind(this));
    document.getElementById('controls-robots').addEventListener('click', this.onClickRobots.bind(this));
    document.getElementById('controls-reset').addEventListener('click', this.onClickReset.bind(this));
    document.getElementById('controls-skip').addEventListener('click', this.onClickSkip.bind(this));
}

//===== UI

Controls.prototype.countdownStart = function(seconds) {
    clearTimeout(this.timers.countdown);
    this.timers.countdown = this.countdownTick.bind(this);

    const countdown = document.getElementById('controls-countdown');
    countdown.dataset.tick = seconds;

    this.countdownTick();
};

Controls.prototype.countdownTick = function() {
    const countdown = document.getElementById('controls-countdown');
    const tick = countdown.dataset.tick * 1;
    countdown.dataset.tick = tick - 1; 

    const s = (tick !== 1) ? 's' : '';
    countdown.innerHTML = `${tick} second${s}!`;

    if (tick === 0) {
        this.countdownComplete();
        return;
    }

    this.timers.countdown = setTimeout(this.countdownTick.bind(this), 1000);
};

Controls.prototype.countdownComplete = function() {
    document.getElementById('controls-countdown').dataset.tick = 0;   
} ;

Controls.prototype.drawGuesses = function() {
    const container = document.getElementById('controls-guesses');
    container.querySelectorAll('.controls-guess').forEach(el => el.parentNode.removeChild(el));

    for (let i = 1; i <= 30; i++) {
        const guess = document.createElement('div');
        guess.className = 'controls-guess';
        guess.innerHTML = i;
        guess.setAttribute('data-value', i);
        guess.addEventListener('click', this.onClickGuess.bind(this))
        container.appendChild(guess);
    }
};

Controls.prototype.showWaiting = function() {
    document.getElementById('controls-start').parentNode.style.display = '';
    document.getElementById('controls-walls').parentNode.style.display = '';
    document.getElementById('controls-robots').parentNode.style.display = '';

    document.getElementById('controls-stop').parentNode.style.display = 'none';
    // document.getElementById('controls-moves-reset').parentNode.style.display = 'none';
    document.getElementById('controls-guesses').style.display = 'none';
    document.getElementById('controls-panic').style.display = 'none';
};

Controls.prototype.showGuessing = function() {
    document.getElementById('controls-start').parentNode.style.display = 'none';
    document.getElementById('controls-walls').parentNode.style.display = 'none';
    document.getElementById('controls-robots').parentNode.style.display = 'none';
    document.getElementById('controls-panic').style.display = 'none';

    document.getElementById('controls-stop').parentNode.style.display = '';
    // document.getElementById('controls-moves-reset').parentNode.style.display = '';
    document.getElementById('controls-guesses').style.display = '';
}

Controls.prototype.showPanic = function() {
    this.showGuessing();
    document.getElementById('controls-panic').style.display = '';
};

//===== Message handlers

Controls.prototype.msgAttempt = function() {
    alert("Ready for winning attempt!");
};

Controls.prototype.msgGuess = function(evt) { 
    const blurbs = [ " has a solution: ", " can do it in ", " says, maybe ", " wagers ", 
        " reckons ", " is pretty sure it's ", ", confidently: ", " wants it to be ", 
        " says ", " hazards ", " guesses ", " thinks it might be "];
    const blurb = blurbs[Math.floor(Math.random() * blurbs.length)];

    const msg = evt.detail;
    const guess = msg.guess;

    this.currentWinningGuess = guess;

    document.getElementById('controls-panic').querySelector('.controls-alert-urgent').innerHTML = (`${this.names[msg.id]}${blurb}${guess} moves.`);
    this.showPanic();
    this.countdownStart(5);
}

Controls.prototype.msgConnected = function() {
    this.showWaiting();
};

Controls.prototype.msgMove = function() {
    this.moves++;
    document.getElementById('controls-moves').innerHTML = this.moves;
};

Controls.prototype.msgPlayers = function(evt) {
    const container = document.getElementById('controls-players');
    const names = evt.detail.body;
    const keys = Object.keys(names);

    if (keys.length > 0) {
        const nobody = document.getElementById('controls-players-nobody');
        nobody && nobody.parentNode.removeChild(nobody);
    }
    
    keys.forEach(connectionId => {
        const id = `player-${connectionId}`;

        if (document.getElementById(id)) {
            return;
        }

        const n = document.createElement('div');
        n.id = id;
        n.innerHTML = names[connectionId];
        n.className = 'controls-player';
        container.appendChild(n)
    });

    this.names = names;

    container.querySelectorAll('.controls-player').forEach(el => {
        const id = el.id.split('player-').pop();
        if (!this.names[id]) {
            container.removeChild(el);
        }
    });
};

Controls.prototype.msgSkip = function() {
    this.coundownComplete();
};

Controls.prototype.msgStart = function() {
    this.showGuessing();
};

Controls.prototype.msgStop = function() {
    this.showWaiting();
}

//===== Click handlers

Controls.prototype.dispatch = function(evt, data) {
    const e = (data ? new CustomEvent(evt, { detail: data }) : new Event(evt));
    document.dispatchEvent(e);
}

Controls.prototype.onClickGuess = function(evt) {
    const guess = evt.currentTarget.dataset.value * 1;

    if (!guess || guess < 1) {
        return;
    }

    if (guess < this.currentWinningGuess) {
        this.dispatch('L-guess', { moves: evt.currentTarget.dataset.value });
    } else {
        alert(`That doesn't beat ${this.currentWinningGuess} - try again!`)
    }
}

Controls.prototype.onClickRobots = function() {
    this.dispatch('L-robots');
}

Controls.prototype.onClickSkip = function() {
    this.dispatch('L-skip');
}

Controls.prototype.onClickStart = function() {
    this.dispatch('L-start');
}

Controls.prototype.onClickStop = function() {
    this.dispatch('L-stop');
}

Controls.prototype.onClickWalls = function() {
    this.dispatch('L-walls');
}

Controls.prototype.onClickReset = function() {
    this.moves = 0;
    document.getElementById('controls-moves').innerHTML = this.moves;

    this.dispatch('L-reset');
};