const Phaser = require('phaser');
const fs = require('fs');
const { throttle } = require('lodash');

const CombatLog = require('./combat.log');
const CombatCryps = require('./combat.cryps');
const CombatSkills = require('./combat.skills');
const renderResolutions = require('./combat.render.resolutions');


class Combat extends Phaser.Scene {
    constructor() {
        super({ key: 'Combat' });
    }

    preload() {
        // Textures already loaded can do proper check in future when theres more textures
        if (!(this.textures.getTextureKeys().length > 2)) {
            this.textures.addBase64('alk', `data:image/png;base64,${new Buffer.from(fs.readFileSync('./assets/alakazam-f.png')).toString('base64')}`);
            this.textures.addBase64('magmar', `data:image/png;base64,${new Buffer.from(fs.readFileSync('./assets/magmar.png')).toString('base64')}`);
            this.load.image('proj', 'https://labs.phaser.io/assets/sprites/bullet.png');
            this.load.image('blue', 'https://labs.phaser.io/assets/particles/blue.png');
            this.load.image('green', 'https://labs.phaser.io/assets/particles/green.png');
            this.load.image('red', 'https://labs.phaser.io/assets/particles/red.png');
            this.load.image('white', 'https://labs.phaser.io/assets/particles/white.png');
            this.load.image('yellow', 'https://labs.phaser.io/assets/particles/yellow.png');
        }
    }

    create() {
        this.registry.events.off('changedata', this.updateData);
        this.registry.events.on('changedata', this.updateData, this);
        this.input.keyboard.on('keydown_S', () => {
            this.endGame();
        }, 0, this);
        this.registry.set('gamePhase', false);
        this.registry.set('gameAnimating', false);
        this.account = this.registry.get('account');
        this.fetchGame = throttle(() => {
            const game = this.registry.get('game');
            if (game) {
                const ws = this.registry.get('ws');
                return ws.sendGameState(game.id);
            }
            return false;
        }, 1000);
        return true;
    }

    startGame(game) {
        this.scene.manager.add('CombatCryps', CombatCryps, true, game);
        this.scene.manager.add('CombatLog', CombatLog, true, game);
        this.scene.manager.add('CombatSkills', CombatSkills, true, game);
        this.renderedResolves = game.resolved.length; // In case you rejoin mid way
        this.registry.set('gamePhase', game.phase);
        return true;
    }

    endGame() {
        this.scene.switch('CrypList'); // Switch back to cryp list
        this.registry.set('game', null);
        this.scene.get('CombatLog').cleanUp();
        this.scene.get('CombatCryps').cleanUp();
        this.scene.get('CombatSkills').cleanUp();
        this.scene.remove();
        return true;
    }

    update() {
        this.fetchGame();
        return true;
    }

    updateData(parent, key, data) {
        if (key === 'game') {
            if (!data) return false;
            const startGame = this.registry.get('gamePhase') === false;
            if (startGame) { this.startGame(data); return true; }
            this.checkAnimation(data);
            // Game over?
            if (data.phase === 'Finish') {
                this.time.delayedCall(10000, () => {
                    this.endGame();
                });
            }
        }
        return true;
    }

    checkAnimation(game) {
        // do we need to render resolution animations?
        const isAnimating = this.registry.get('gameAnimating');
        if (isAnimating) return false;
        if (game.resolved.length !== this.renderedResolves) {
            this.registry.set('gameLog', this.registry.get('gameLog') + 1);
            const newResolutions = game.resolved.slice(this.renderedResolves);
            renderResolutions(this, game, this.scene.get('CombatCryps').cryps, newResolutions);
            this.renderedResolves = game.resolved.length;
            return true;
        }
        this.registry.set('gameLog', game.log.length);
        return true;
    }
}

module.exports = Combat;