<!--
  - @copyright Copyright (c) 2020 Jonas Heinrich
  -
  - @author Jonas Heinrich <onny@project-insanity.org>
  -
  - @license GNU AGPL version 3 or any later version
  -
  - This program is free software: you can redistribute it and/or modify
  - it under the terms of the GNU Affero General Public License as
  - published by the Free Software Foundation, either version 3 of the
  - License, or (at your option) any later version.
  -
  - This program is distributed in the hope that it will be useful,
  - but WITHOUT ANY WARRANTY; without even the implied warranty of
  - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  - GNU Affero General Public License for more details.
  -
  - You should have received a copy of the GNU Affero General Public License
  - along with this program. If not, see <http://www.gnu.org/licenses/>.
  -
  -->

<template>
	<div>
		<div
			class="podcastHeaderBg"
			:style="{ backgroundImage: `url(${podcast.smallImageURL})` }">
			<div class="podcastHeader">
				<div
					class="podcastImage"
					:style="{ backgroundImage: `url(${podcast.smallImageURL})` }" />
				<div class="podcastDescription">
					<h1>{{ podcast.title }}</h1>
					<div class="podcastAuthor">
						by <a :href="`#/browse/author/${podcast.author}`">{{ podcast.author }}</a>
					</div>
					<div class="podcastControls">
						<a href="#" class="button">Subscribe</a>
						<ul class="podcastCategory">
							<a v-for="(category, idx) in podcast.categories"
								:key="idx"
								:href="`#/browse/category/${podcast.categories[idx]}`">
								<li>
									{{ getCategoryName(podcast.categories[idx]) }}
								</li>
							</a>
						</ul>
					</div>
					<vue-show-more-text
						:text="podcast.description"
						additional-container-css="padding: 0px;" />
				</div>
			</div>
		</div>
		<Table
			v-show="!pageLoading && podcast.episodes.length > 0"
			v-resize="onResize"
			:episodes="podcast.episodes"
			@doPlay="doPlay" />
		<EmptyContent
			v-if="pageLoading"
			icon="icon-loading" />
	</div>
</template>

<script>
import EmptyContent from '@nextcloud/vue/dist/Components/EmptyContent'
import Table from '../components/Table'

import { showError } from '@nextcloud/dialogs'
import axios from '@nextcloud/axios'

import vueShowMoreText from 'vue-show-more-text'

import { audioPlayer, doPlay } from '../services/player'
import { getCategoryName } from '../services/podcastApi'

export default {
	name: 'Show',
	components: {
		Table,
		EmptyContent,
		vueShowMoreText,
	},
	data: () => ({
		podcast: {
			episodes: [],
		},
		pageLoading: false,
		nextPage: 0,
	}),
	computed: {
		player() {
			return this.$store.state.player
		},
	},
	watch: {
		$route: 'onRoute',
		'player.volume'(newVolume, oldVolume) {
			if (audioPlayer !== null) {
				audioPlayer.volume(newVolume)
			}
		},
		'player.isPaused'(newState, oldState) {
			if (newState === true && audioPlayer !== null) {
				audioPlayer.pause()
			} else if (newState === false && audioPlayer !== null) {
				audioPlayer.play()
			}
		},
	},
	mounted() {
		this.pageLoading = true
		const podcastId = this.$route.params.id
		this.queryPodcast(podcastId)
		this.scroll()
	},
	methods: {

		getCategoryName(categoryid) {
			return getCategoryName(categoryid)
		},

		onResize({ width, height }) {
			const contentHeight = document.getElementById('app-content-vue').scrollHeight
			const tableHeight = height
			console.log(tableHeight, contentHeight)
			if (tableHeight < contentHeight) {
				this.preFill()
			}
		},

		doPlay(episode) {
			doPlay(episode)
		},

		preFill() {
			const route = this.$route
			console.log('lol')
			console.log(route)
			// this.queryPodcast(route.name)
		},

		/**
			 * Start playing a podcast episode
			 * @param {Object} episode Episode object
			 */

		async queryPodcast(podcastId) {

			const vm = this

			const queryURI = 'https://api.fyyd.de/0.2/podcast/episodes'
			try {
				delete axios.defaults.headers.requesttoken
				await axios.get(queryURI, {
					params: {
						podcast_id: podcastId,
						count: 20,
						page: vm.nextPage,
					},
				})
					.then(function(response) {
						vm.nextPage = response.data.meta.paging.next_page
						vm.processPodcast(response.data)
					})
			} catch (error) {
				showError(t('podcast', 'Could not fetch stations from remote API'))
			}
		},

		processPodcast(podcast) {
			if (this.nextPage > 1) {
				this.podcast.episodes = this.podcast.episodes.concat(podcast.data.episodes)
			} else {
				this.podcast = podcast.data
			}
			this.pageLoading = false
		},

		/**
		 * On scroll event, load more stations if bottom reached
		 */
		scroll() {
			window.onscroll = () => {
				if ((window.innerHeight + window.scrollY) >= document.body.scrollHeight) {
					const podcastId = this.$route.params.id
					this.queryPodcast(podcastId)
				}
			}
		},
	},
}
</script>

<style lang="scss">

.podcastHeaderBg {
	background-size: cover;
	background-position: center;
}

.podcastHeader {
	width: 100%;
	min-height: 300px;
	display: flex;
	color: white;
	justify-content: center;
	padding: 40px 20px;
	/* gap: 30px; */
	background-color: rgba(0, 0, 0, .7);
	backdrop-filter: blur(8px);
	text-shadow: 1px 1px 2px rgba(0,0,0,.5);

	.button {
		text-shadow: 0px 0px 0px;
	}

	.podcastImage {
		width: 200px;
		height: 200px;
		background-size: cover;
		background-position: center;
		box-shadow: 0 4px 60px rgba(0,0,0,.5);
		margin-right: 25px;
		border-radius: 5px;
	}

	.podcastDescription {
		max-width: 500px;
		color: #ddd;

		h1 {
			font-size: 30px;
			font-weight: bold;
			line-height: 1.2em;
			color: white;
		}

		.podcastAuthor {
			padding-bottom: 5px;

			a {
				color: white;
			}
		}

		.podcastControls {
			display: flex;
			align-items: center;
			margin-bottom: 5px;

			.button {
				margin-right: 10px;
			}
		}

		ul.podcastCategory li {
			display: inline;
			border: 1px solid var(--color-text-maxcontrast);
			border-radius: var(--border-radius);
			margin-right: 5px;
			cursor: pointer;
			color: var(--color-text-maxcontrast);
			padding: 3px 6px;
		}

		ul.podcastCategory li:hover {
			border: 1px solid white;
			color: white;
		}
	}

}

@media only screen and (max-width: 500px) {
	.podcastHeader {
		flex-direction: column;
		align-items: center;

		.podcastImage {
			margin-right: 0px;
			margin-bottom: 25px;
		}

		.podcastDescription {
			text-align: center;

			.podcastControls {
				justify-content: center;
			}
		}
	}
}

</style>