<template>
	<div class='container'>
		<input type='text' class='input' v-model='searchQuery' placeholder='Search for Songs'>
		<br /><br />
		<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 filteredSongs' track-by='$index'>
					<td>
						<img class='song-thumbnail' :src='song.thumbnail' onerror="this.src='/assets/notes-transparent.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>
						<button class='button is-primary' @click='edit(song, index)'>Edit</button>
						<button class='button is-success' @click='add(song)'>Add</button>
						<button class='button is-danger' @click='remove(song._id, index)'>Remove</button>
					</td>
				</tr>
			</tbody>
		</table>
	</div>
	<edit-song v-show='isEditActive'></edit-song>
</template>

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

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

	export default {
		components: { EditSong },
		data() {
			return {
				searchQuery: '',
				songs: [],
				isEditActive: false,
				editing: {
					index: 0,
					song: {}
				},
				video: {
					player: null,
					paused: false,
					playerReady: false
				},
				timeout: 0
			}
		},
		computed: {
			filteredSongs: function () {
				return this.$eval('songs | filterBy searchQuery');
			}
		},
		methods: {
			settings: function (type) {
				let _this = this;
				switch(type) {
					case 'stop':
						_this.video.player.stopVideo();
						_this.video.paused = true;
						break;
					case 'pause':
						_this.video.player.pauseVideo();
						_this.video.paused = true;
						break;
					case 'play':
						_this.video.player.playVideo();
						_this.video.paused = false;
						break;
					case 'skipToLast10Secs':
						_this.video.player.seekTo((_this.editing.song.duration - 10) + _this.editing.song.skipDuration);
						break;
				}
			},
			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.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) {
				if (this.video.player) {
					this.video.player.loadVideoById(song._id, this.editing.song.skipDuration);
					let songCopy = {};
					for (let n in song) {
						songCopy[n] = song[n];
					}
					this.editing = { index, song: songCopy };
					this.isEditActive = true;
				}
			},
			save: function (song, close) {
				let _this = this;
				this.socket.emit('queueSongs.update', song._id, song, function (res) {
					Toast.methods.addToast(res.message, 4000);
					if (res.status === 'success') {
						_this.songs.forEach((lSong) => {
							if (song._id === lSong._id) {
								for (let n in song) {
									lSong[n] = song[n];
								}
							}
						});
					}
					if (close) {
						_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.socket.emit('queueSongs.remove', id, res => {
					if (res.status == 'success') Toast.methods.addToast(res.message, 2000);
				});
			},
			init: function() {
				let _this = this;
				_this.socket.emit('queueSongs.index', data => {
					_this.songs = data;
				});
				_this.socket.emit('apis.joinAdminRoom', 'queue', data => {});
			}
		},
		ready: function () {
			let _this = this;
			io.getSocket((socket) => {
				_this.socket = socket;
				if (_this.socket.connected) {
					_this.init();
					_this.socket.on('event:admin.queueSong.added', queueSong => {
						_this.songs.push(queueSong);
					});
					_this.socket.on('event:admin.queueSong.removed', songId => {
						_this.songs = _this.songs.filter(function(song) {
							return song._id !== songId;
						});
					});
				}
				io.onConnect(() => {
					_this.init();
				});
			});

			setInterval(() => {
				if (_this.video.paused === false && _this.playerReady && _this.video.player.getCurrentTime() - _this.editing.song.skipDuration > _this.editing.song.duration) {
					_this.video.paused = false;
					_this.video.player.stopVideo();
				}
			}, 200);

			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 },
				startSeconds: _this.editing.song.skipDuration,
				events: {
					'onReady': () => {
						let volume = parseInt(localStorage.getItem("volume"));
						volume = (typeof volume === "number") ? volume : 20;
						_this.video.player.seekTo(_this.editing.song.skipDuration);
						_this.video.player.setVolume(volume);
						if (volume > 0) _this.video.player.unMute();
						_this.playerReady = true;
					},
					'onStateChange': event => {
						if (event.data === 1) {
							_this.video.paused = false;
							let youtubeDuration = _this.video.player.getDuration();
							youtubeDuration -= _this.editing.song.skipDuration;
							if (_this.editing.song.duration > youtubeDuration) {
								this.video.player.stopVideo();
								_this.video.paused = true;
								Toast.methods.addToast("Video can't play. Specified duration is bigger than the YouTube song duration.", 4000);
							} else if (_this.editing.song.duration <= 0) {
								this.video.player.stopVideo();
								_this.video.paused = true;
								Toast.methods.addToast("Video can't play. Specified duration has to be more than 0 seconds.", 4000);
							}

							if (_this.video.player.getCurrentTime() < _this.editing.song.skipDuration) {
								_this.video.player.seekTo(10);
							}
						} else if (event.data === 2) {
							this.video.paused = true;
						}
					}
				}
			});
			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; }

	.is-primary:focus { background-color: #029ce3 !important; }
</style>
