/**
 * Replay embed
 *
 * This file is used to play back downloaded replay files, and can also be
 * used by third parties to embed PS replays. The protocol data to replay
 * should be in
 * `<script type="text/plain" class="battle-log-data">`
 *
 * The replay animation will be put into an existing replay HTML structure if
 * it exists, but if it doesn't, the animation would be put at the bottom of
 * the page.
 *
 * @author Guangcong Luo <guangcongluo@gmail.com>
 * @license MIT
 */

import { Battle } from "./battle";
import type { ID } from "./battle-dex";
import { BattleLog } from "./battle-log";
import { BattleSound } from "./battle-sound";

window.exports = window;

function linkStyle(url: string) {
	const linkEl = document.createElement('link');
	linkEl.rel = 'stylesheet';
	linkEl.href = url;
	document.head.appendChild(linkEl);
}
function requireScript(url: string) {
	const scriptEl = document.createElement('script');
	scriptEl.src = url;
	document.head.appendChild(scriptEl);
}

linkStyle('https://play.pokemonshowdown.com/style/font-awesome.css?');
linkStyle('https://play.pokemonshowdown.com/style/battle.css?a7');
linkStyle('https://play.pokemonshowdown.com/style/replay.css?a7');
linkStyle('https://play.pokemonshowdown.com/style/utilichart.css?a7');

requireScript('https://play.pokemonshowdown.com/js/lib/ps-polyfill.js');
requireScript('https://play.pokemonshowdown.com/config/config.js?a7');
requireScript('https://play.pokemonshowdown.com/js/lib/jquery-1.11.0.min.js');
requireScript('https://play.pokemonshowdown.com/js/lib/html-sanitizer-minified.js');
requireScript('https://play.pokemonshowdown.com/js/battle-sound.js');
requireScript('https://play.pokemonshowdown.com/js/battledata.js?a7');
requireScript('https://play.pokemonshowdown.com/data/pokedex-mini.js?a7');
requireScript('https://play.pokemonshowdown.com/data/pokedex-mini-bw.js?a7');
requireScript('https://play.pokemonshowdown.com/data/graphics.js?a7');
requireScript('https://play.pokemonshowdown.com/data/pokedex.js?a7');
requireScript('https://play.pokemonshowdown.com/data/moves.js?a7');
requireScript('https://play.pokemonshowdown.com/data/abilities.js?a7');
requireScript('https://play.pokemonshowdown.com/data/items.js?a7');
requireScript('https://play.pokemonshowdown.com/data/teambuilder-tables.js?a7');
requireScript('https://play.pokemonshowdown.com/js/battle-tooltips.js?a7');
requireScript('https://play.pokemonshowdown.com/js/battle.js?a7');

const Replays = {
	$el: null! as JQuery,
	battle: null! as Battle,
	muted: false,
	init() {
		this.$el = $('.wrapper');
		if (!this.$el.length) {
			$('body').append('<div class="wrapper replay-wrapper" style="max-width:1180px;margin:0 auto"><div class="battle"></div><div class="battle-log"></div><div class="replay-controls"></div><div class="replay-controls-2"></div>');
			this.$el = $('.wrapper');
		}

		const id = ($('input[name=replayid]').val() || '') as ID;
		const log = ($('script.battle-log-data').text() || '').replace(/\\\//g, '/');

		this.$el.on('click', '.chooser button', e => {
			this.clickChangeSetting(e);
		});
		this.$el.on('click', 'button', e => {
			const action = $(e.currentTarget).data('action');
			if (action) this[action as 'play']();
		});

		this.battle = new Battle({
			id,
			$frame: this.$('.battle'),
			$logFrame: this.$('.battle-log'),
			log: log.split('\n'),
			isReplay: true,
			paused: true,
			autoresize: true,
		});

		this.$('.replay-controls-2').html('<div class="chooser leftchooser speedchooser"> <em>Speed:</em> <div><button value="hyperfast">Hyperfast</button><button value="fast">Fast</button><button value="normal" class="sel">Normal</button><button value="slow">Slow</button><button value="reallyslow">Really Slow</button></div> </div> <div class="chooser colorchooser"> <em>Color&nbsp;scheme:</em> <div><button class="sel" value="light">Light</button><button value="dark">Dark</button></div> </div> <div class="chooser soundchooser" style="display:none"> <em>Music:</em> <div><button class="sel" value="on">On</button><button value="off">Off</button></div> </div>');

		// this works around a WebKit/Blink bug relating to float layout
		const rc2 = this.$('.replay-controls-2')[0];
		// eslint-disable-next-line no-self-assign
		if (rc2) rc2.innerHTML = rc2.innerHTML;

		if (window.HTMLAudioElement) $('.soundchooser, .startsoundchooser').show();
		this.update();
		this.battle.subscribe(state => this.update(state));
	},
	$(sel: string): JQuery {
		return this.$el.find(sel);
	},
	clickChangeSetting(e: JQuery.ClickEvent) {
		e.preventDefault();
		const $chooser = $(e.currentTarget).closest('.chooser');
		const value = e.currentTarget.value;
		this.changeSetting($chooser, value, $(e.currentTarget));
	},
	changeSetting(type: string | JQuery, value: string, valueElem?: JQuery) {
		let $chooser;
		if (typeof type === 'string') {
			$chooser = this.$('.' + type + 'chooser');
		} else {
			$chooser = type;
			type = '';
			if ($chooser.hasClass('colorchooser')) {
				type = 'color';
			} else if ($chooser.hasClass('soundchooser')) {
				type = 'sound';
			} else if ($chooser.hasClass('speedchooser')) {
				type = 'speed';
			}
		}
		if (!valueElem) valueElem = $chooser.find('button[value=' + value + ']');

		$chooser.find('button').removeClass('sel');
		valueElem.addClass('sel');

		switch (type) {
		case 'color':
			if (value === 'dark') {
				$(document.body).addClass('dark');
			} else {
				$(document.body).removeClass('dark');
			}
			break;

		case 'sound':
			// remember this is reversed: sound[off] === muted[true]
			this.muted = (value === 'off');
			this.battle.setMute(this.muted);
			this.$('.startsoundchooser').remove();
			break;

		case 'speed':
			const fadeTable = {
				hyperfast: 40,
				fast: 50,
				normal: 300,
				slow: 500,
				reallyslow: 1000,
			};
			const delayTable = {
				hyperfast: 1,
				fast: 1,
				normal: 1,
				slow: 1000,
				reallyslow: 3000,
			};
			this.battle.messageShownTime = delayTable[value as keyof typeof delayTable];
			this.battle.messageFadeTime = fadeTable[value as keyof typeof fadeTable];
			this.battle.scene.updateAcceleration();
			break;
		}
	},
	update(state?: string) {
		if (state === 'error') {
			const m = /^([a-z0-9]+)-[a-z0-9]+-[0-9]+$/.exec(this.battle.id);
			if (m) {
				this.battle.scene.message('<hr /><div class="chat">This replay was uploaded from a third-party server (<code>' + BattleLog.escapeHTML(m[1]) + '</code>). It contains errors.</div><div class="chat">Replays uploaded from third-party servers can contain errors if the server is running custom code, or the server operator has otherwise incorrectly configured their server.</div>');
			}
			return;
		}

		if (BattleSound.muted && !this.muted) this.changeSetting('sound', 'off');

		if (this.battle.paused) {
			const resetDisabled = !this.battle.started ? ' disabled' : '';
			this.$('.replay-controls').html('<button data-action="play"><i class="fa fa-play"></i> Play</button><button data-action="reset"' + resetDisabled + '><i class="fa fa-undo"></i> Reset</button> <button data-action="rewind"><i class="fa fa-step-backward"></i> Last turn</button><button data-action="ff"><i class="fa fa-step-forward"></i> Next turn</button> <button data-action="ffto"><i class="fa fa-fast-forward"></i> Go to turn...</button> <button data-action="switchViewpoint"><i class="fa fa-random"></i> Switch sides</button>');
		} else {
			this.$('.replay-controls').html('<button data-action="pause"><i class="fa fa-pause"></i> Pause</button><button data-action="reset"><i class="fa fa-undo"></i> Reset</button> <button data-action="rewind"><i class="fa fa-step-backward"></i> Last turn</button><button data-action="ff"><i class="fa fa-step-forward"></i> Next turn</button> <button data-action="ffto"><i class="fa fa-fast-forward"></i> Go to turn...</button> <button data-action="switchViewpoint"><i class="fa fa-random"></i> Switch sides</button>');
		}
	},
	pause() {
		this.battle.pause();
	},
	play() {
		this.battle.play();
	},
	reset() {
		this.battle.reset();
	},
	ff() {
		this.battle.seekBy(1);
	},
	rewind() {
		this.battle.seekBy(-1);
	},
	ffto() {
		let turn: string | number | null = prompt('Turn?');
		if (!turn?.trim()) return;
		if (turn === 'e' || turn === 'end' || turn === 'f' || turn === 'finish') turn = Infinity;
		turn = Number(turn);
		if (isNaN(turn) || turn < 0) alert("Invalid turn");
		this.battle.seekTurn(turn);
	},
	switchViewpoint() {
		this.battle.switchViewpoint();
	},
};

window.onload = function () {
	Replays.init();
};

if (window.matchMedia) {
	if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
		document.body.className = 'dark';
	}
	window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', event => {
		document.body.className = event.matches ? "dark" : "";
	});
}