<template>
	<div
		class="scenes-page"
	>
		<Filters
			v-if="showFilters"
			:class="{ loading }"
		>
			<TagsFilter
				:filters="filters"
				:tags="aggTags"
				@update="updateFilter"
			/>

			<ChannelsFilter
				:filters="filters"
				:channels="aggChannels"
				@update="updateFilter"
			/>

			<ActorsFilter
				:filters="filters"
				:actors="aggActors"
				@update="updateFilter"
			/>
		</Filters>

		<div
			class="scenes-container"
			:class="{ loading }"
		>
			<div
				v-if="showMeta"
				class="scenes-header"
			>
				<div class="meta">{{ total }} results</div>

				<select
					v-model="scope"
					class="input"
					@change="search"
				>
					<option value="likes">Likes</option>
					<option value="latest">Latest</option>
					<option value="upcoming">Upcoming</option>
					<option value="new">New</option>
				</select>
			</div>

			<nav
				v-if="showScopeTabs"
				class="scopes"
			>
				<Link
					:href="getPath('latest')"
					class="scope nolink"
					:active="scope === 'latest'"
				>Latest</Link>

				<Link
					:href="getPath('upcoming')"
					class="scope nolink"
					:active="scope === 'upcoming'"
				>Upcoming</Link>

				<Link
					:href="getPath('new')"
					class="scope nolink"
					:active="scope === 'new'"
				>New</Link>
			</nav>

			<ul
				class="scenes nolist"
			>
				<li
					v-for="scene in scenes"
					:key="scene.id"
				>
					<Scene :scene="scene" />
				</li>
			</ul>

			<Pagination />
		</div>

		<Ellipsis
			class="ellipsis"
			:class="{ loading }"
		/>
	</div>
</template>

<script setup>
import { ref, inject } from 'vue';
import { parse } from 'path-to-regexp';

import navigate from '#/src/navigate.js';
import { get } from '#/src/api.js';
import events from '#/src/events.js';
import { getActorIdentifier, parseActorIdentifier } from '#/src/query.js';

import Filters from '#/components/filters/filters.vue';
import ActorsFilter from '#/components/filters/actors.vue';
import TagsFilter from '#/components/filters/tags.vue';
import ChannelsFilter from '#/components/filters/channels.vue';
import Scene from '#/components/scenes/tile.vue';
import Pagination from '#/components/pagination/pagination.vue';
import Ellipsis from '#/components/loading/ellipsis.vue';

defineProps({
	showFilters: {
		type: Boolean,
		default: true,
	},
	showMeta: {
		type: Boolean,
		default: true,
	},
	showScopeTabs: {
		type: Boolean,
		default: false,
	},
});

const { pageProps, routeParams, urlParsed } = inject('pageContext');

const {
	actor: pageActor,
	tag: pageTag,
	entity: pageEntity,
} = pageProps;

const scenes = ref(pageProps.scenes);
const aggActors = ref(pageProps.aggActors || []);
const aggTags = ref(pageProps.aggTags || []);
const aggChannels = ref(pageProps.aggChannels || []);

const currentPage = ref(Number(routeParams.page));
const scope = ref(routeParams.scope);
const total = ref(Number(pageProps.total));
const loading = ref(false);

const actorIds = urlParsed.search.actors?.split(',').map((identifier) => parseActorIdentifier(identifier)?.id).filter(Boolean) || [];
const queryActors = actorIds.map((urlActorId) => aggActors.value.find((aggActor) => aggActor.id === urlActorId)).filter(Boolean);

const networks = Object.fromEntries(aggChannels.value.map((channel) => (channel.type === 'network' ? channel : channel.parent)).filter(Boolean).map((parent) => [`_${parent.slug}`, parent]));
const channels = Object.fromEntries(aggChannels.value.filter((channel) => channel.type === 'channel').map((channel) => [channel.slug, channel]));

const queryEntity = networks[urlParsed.search.e] || channels[urlParsed.search.e];

const filters = ref({
	tags: urlParsed.search.tags?.split(',').filter(Boolean) || [],
	entity: queryEntity,
	actors: queryActors,
});

function getPath(targetScope, preserveQuery) {
	const path = parse(routeParams.path).map((segment) => {
		if (segment.name === 'scope') {
			return `${segment.prefix}${targetScope}`;
		}

		if (segment.name === 'page') {
			return `${segment.prefix}${1}`;
		}

		return `${segment.prefix || ''}${routeParams[segment.name] || segment}`;
	}).join('');

	if (preserveQuery && urlParsed.searchOriginal) {
		return `${path}${urlParsed.searchOriginal}`;
	}

	return path;
}

async function search(resetPage = true) {
	if (resetPage) {
		currentPage.value = 1;
	}

	const query = {};

	const entity = filters.value.entity || pageEntity;
	const entitySlug = entity?.type === 'network' ? `_${entity.slug}` : entity?.slug;

	loading.value = true;

	const res = await get('/scenes', {
		...query,
		actors: [pageActor, ...filters.value.actors].filter(Boolean).map((filterActor) => getActorIdentifier(filterActor)).join(','), // if we're on an actor page, that actor ID needs to be included
		tags: [pageTag?.slug, ...filters.value.tags].filter(Boolean).join(','),
		e: entitySlug,
		scope: scope.value,
		page: currentPage.value, // client uses param rather than query pagination
	});

	scenes.value = res.scenes;
	aggActors.value = res.aggActors;
	aggTags.value = res.aggTags;
	aggChannels.value = res.aggChannels;

	total.value = res.total;
	loading.value = false;

	events.emit('scrollUp');

	navigate(getPath(scope.value, false), {
		...query,
		actors: filters.value.actors.map((filterActor) => getActorIdentifier(filterActor)).join(',') || undefined, // don't include page actor ID in query, already a parameter
		tags: filters.value.tags.join(',') || undefined,
		e: filters.value.entity?.type === 'network' ? `_${filters.value.entity.slug}` : (filters.value.entity?.slug || undefined),
	}, { redirect: false });
}

function updateFilter(prop, value, reload = true) {
	filters.value[prop] = value;

	if (reload) {
		search();
	}
}
</script>

<style scoped>
.scenes-page {
	display: flex;
	background: var(--background-base-10);
	position: relative;
}

.scenes-header {
	display: flex;
	align-items: center;
	padding: .5rem 1rem .25rem 3rem;
}

.scenes-container {
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}

.meta {
	display: flex;
	flex-grow: 1;
	justify-content: space-between;
	align-items: center;
}

.scenes {
	display: grid;
    grid-template-columns: repeat(auto-fill, minmax(22rem, 1fr));
	gap: .75rem .5rem;
	padding: .5rem 1rem 1rem 1rem;
}

.scopes {
	margin-left: 1rem;
}

.scope {
	box-sizing: border-box;
	padding: 1rem;
	color: var(--shadow);
	font-size: .9rem;
	font-weight: bold;

	&.active {
		color: var(--primary);
		font-weight: bold;
	}
}

.loading:not(.ellipsis) {
	opacity: .3;
	pointer-events: none;
}

.ellipsis {
	display: none;
	position: absolute;
	top: 1rem;
	left: 50%;

	&.loading {
		display: flex;
	}
}
</style>
