<template>
	<div class="movies-page">
		<Filters
			v-if="showFilters"
			:class="{ loading }"
		>
			<div class="filter">
				<input
					v-model="filters.search"
					type="search"
					placeholder="Search movies"
					class="search input"
					@search="search"
				>
			</div>

			<TagsFilter
				:filters="filters"
				:tags="aggTags"
				@update="updateFilter"
			/>

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

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

		<div class="movies-container">
			<div class="movies-header">
				<div class="meta">{{ total }} results</div>

				<select
					v-model="scope"
					class="input"
					@change="search({ autoScope: false })"
				>
					<!-- not selected in SSR without prop -->
					<option
						v-if="pageStash"
						:selected="scope === 'stashed'"
						value="stashed"
					>Added</option>

					<option
						v-if="filters.search"
						:selected="scope === 'results'"
						value="results"
					>Relevance</option>

					<option value="likes">Popular</option>
					<option value="latest">Latest</option>
					<option value="upcoming">Upcoming</option>
					<option value="new">New</option>
				</select>
			</div>

			<ul class="movies nolist">
				<li
					v-for="movie in movies"
					:key="`movie-${movie.id}`"
				>
					<MovieTile :movie="movie" />
				</li>
			</ul>

			<Pagination
				:total="total"
				:page="currentPage"
			/>
		</div>
	</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 { getActorIdentifier, parseActorIdentifier } from '#/src/query.js';
import events from '#/src/events.js';

import MovieTile from '#/components/movies/tile.vue';
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 Pagination from '#/components/pagination/pagination.vue';

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

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

const movies = ref(pageProps.movies);
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 showFilters = ref(true);

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({
	search: urlParsed.search.q,
	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(options = {}) {
	if (options.resetPage !== false) {
		currentPage.value = 1;
	}

	if (options.autoScope !== false) {
		if (filters.value.search) {
			scope.value = 'results';
		}

		if (!filters.value.search && scope.value === 'results') {
			scope.value = 'latest';
		}
	}

	const query = {
		q: filters.value.search || undefined,
	};

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

	loading.value = true;

	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 });

	const res = await get('/movies', {
		...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,
		stashId: pageStash?.id,
		scope: scope.value,
		page: currentPage.value, // client uses param rather than query pagination
	});

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

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

	events.emit('scrollUp');
}

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

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

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

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

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

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

.movies {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
	gap: 1rem;
	padding: .5rem 1rem 1rem 1rem;
}

@media(--compact) {
	.movies {
		grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
	}
}

@media(--small-20) {
	.movies {
		padding: .5rem .5rem 1rem .5rem;
		gap: .5rem .25rem;
	}
}

@media(--small-50) {
	.movies {
		grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
	}
}
</style>
