<template>
	<div class='columns is-mobile'>
		<div class='column is-8-desktop is-offset-2-desktop is-12-mobile'>
			<table class='table is-striped'>
				<thead>
					<tr>
						<td>Thumbnail</td>
						<td>Title</td>
						<td>YouTube ID</td>
						<td>Artists</td>
						<td>Genres</td>
						<td>Requested By</td>
						<td>Options</td>
					</tr>
				</thead>
				<tbody>
					<tr v-for='(index, song) in songs' track-by='$index'>
						<td>
							<img class='song-thumbnail' :src='song.thumbnail' onerror="this.src='/assets/notes.png'">
						</td>
						<td>
							<strong>{{ song.title }}</strong>
						</td>
						<td>{{ song._id }}</td>
						<td>{{ song.artists.join(', ') }}</td>
						<td>{{ song.genres.join(', ') }}</td>
						<td>{{ song.requestedBy }}</td>
						<td>
							<a class='button is-primary' @click='edit(song, index)'>Edit</a>
							<a class='button is-success' @click='add(song)'>Add</a>
							<a class='button is-danger' @click='remove(song._id, index)'>Remove</a>
						</td>
					</tr>
				</tbody>
			</table>
		</div>
	</div>
	<edit-song v-show='isEditActive'></edit-song>
</template>

<script>
	import { Toast } from 'vue-roaster';

	import EditSong from '../Modals/EditSong.vue';

	export default {
		components: { EditSong },
		data() {
			return {
				songs: [],
				isEditActive: false,
				editing: {
					index: 0,
					song: {}
				},
				video: {
					player: null,
					paused: false,
					settings: function (type) {
						switch(type) {
							case 'stop':
								this.player.stopVideo();
								this.paused = true;
								break;
							case 'pause':
								this.player.pauseVideo();
								this.paused = true;
								break;
							case 'play':
								this.player.playVideo();
								this.paused = false;
								break;
							case 'skipToLast10Secs':
								this.player.seekTo(this.player.getDuration() - 10);
								break;
						}
					}
				}
			}
		},
		methods: {
			changeVolume: function() {
				let local = this;
				let volume = $("#volumeSlider").val();
				localStorage.setItem("volume", volume);
				local.video.player.setVolume(volume);
				if (volume > 0) local.video.player.unMute();
			},
			toggleModal: function () {
				this.isEditActive = !this.isEditActive;
				this.video.settings('stop');
			},
			addTag: function (type) {
				if (type == 'genres') {
					let genre = $('#new-genre').val().toLowerCase().trim();
					if (this.editing.song.genres.indexOf(genre) !== -1) return Toast.methods.addToast('Genre already exists', 3000);
					if (genre) {
						this.editing.song.genres.push(genre);
						$('#new-genre').val('');
					} else Toast.methods.addToast('Genre cannot be empty', 3000);
				} else if (type == 'artists') {
					let artist = $('#new-artist').val();
					if (this.editing.song.artists.indexOf(artist) !== -1) return Toast.methods.addToast('Artist already exists', 3000);
					if ($('#new-artist').val() !== '') {
						this.editing.song.artists.push(artist);
						$('#new-artist').val('');
					} else Toast.methods.addToast('Artist cannot be empty', 3000);
				}
			},
			removeTag: function (type, index) {
				if (type == 'genres') this.editing.song.genres.splice(index, 1);
				else if (type == 'artists') this.editing.song.artists.splice(index, 1);
			},
			edit: function (song, index) {
				this.editing = { index, song };
				this.video.player.loadVideoById(song._id);
				this.isEditActive = true;
			},
			save: function (song) {
				let _this = this;
				this.socket.emit('queueSongs.update', song._id, song, function (res) {
					if (res.status == 'success' || res.status == 'error') Toast.methods.addToast(res.message, 2000);
					_this.toggleModal();
				});
			},
			add: function (song) {
				this.socket.emit('songs.add', song, res => {
					if (res.status == 'success') Toast.methods.addToast(res.message, 2000);
				});
			},
			remove: function (id, index) {
				this.songs.splice(index, 1);
				this.socket.emit('queueSongs.remove', id, res => {
					if (res.status == 'success') Toast.methods.addToast(res.message, 2000);
				});
			}
		},
		ready: function () {
			let _this = this;
			let socketInterval = setInterval(() => {
				if (!!_this.$parent.$parent.socket) {
					_this.socket = _this.$parent.$parent.socket;
					_this.socket.emit('queueSongs.index', data => {
						_this.songs = data;
					});
					clearInterval(socketInterval);
				}
			}, 100);

			this.video.player = new YT.Player('player', {
				height: 315,
				width: 560,
				videoId: this.editing.song._id,
				playerVars: { controls: 0, iv_load_policy: 3, rel: 0, showinfo: 0 },
				events: {
					'onReady': () => {
						let volume = parseInt(localStorage.getItem("volume"));
						volume = (typeof volume === "number") ? volume : 20;
						_this.video.player.setVolume(volume);
						if (volume > 0) _this.video.player.unMute();
					},
					'onStateChange': event => {
						if (event.data == 1) {
							let youtubeDuration = _this.video.player.getDuration();
							youtubeDuration -= _this.editing.song.skipDuration;
							if (_this.editing.song.duration > youtubeDuration) this.stopVideo();
						}
					}
				}
			});
			let volume = parseInt(localStorage.getItem("volume"));
			volume = (typeof volume === "number") ? volume : 20;
			$("#volumeSlider").val(volume);
		}
	}
</script>

<style lang='scss' scoped>
	.song-thumbnail {
		display: block;
		max-width: 50px;
		margin: 0 auto;
	}

	td { vertical-align: middle; }
</style>
