<script setup>
import Cookies from 'js-cookie';

import { parse } from 'path-to-regexp';
import {
	computed,
	inject,
	ref,
} from 'vue';

import Campaign from '#/components/campaigns/campaign.vue';
import ActorsFilter from '#/components/filters/actors.vue';
import ChannelsFilter from '#/components/filters/channels.vue';
import Filters from '#/components/filters/filters.vue';

import TagsFilter from '#/components/filters/tags.vue';
import YearsFilter from '#/components/filters/years.vue';
import Ellipsis from '#/components/loading/ellipsis.vue';
import Pagination from '#/components/pagination/pagination.vue';
import SceneTile from '#/components/scenes/tile.vue';
import { get } from '#/src/api.js';
// import events from '#/src/events.js';
import entityPrefixes from '#/src/entities-prefixes.js';
import navigate from '#/src/navigate.js';
import { getActorIdentifier, parseActorIdentifier } from '#/src/query.js';

const props = defineProps({
	showFilters: {
		type: Boolean,
		default: true,
	},
	showMeta: {
		type: Boolean,
		default: true,
	},
	showScopeTabs: {
		type: Boolean,
		default: false,
	},
	defaultScope: {
		type: String,
		default: 'latest',
	},
});

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

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

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

const currentPage = ref(Number(routeParams.page));
const scope = ref(routeParams.scope || props.defaultScope);
const total = ref(Number(pageProps.sceneTotal || pageProps.total));
const loading = ref(false);
const scenesContainer = ref(null);

const view = ref(env.scenesView || 'grid');

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,
	years: urlParsed.search.years?.split(',').filter(Boolean).map(Number) || [],
	tags: urlParsed.search.tags?.split(',').filter(Boolean) || [],
	onlyActorTags: Object.hasOwn(urlParsed.search, 'at'),
	entity: queryEntity,
	actors: queryActors,
});

const sceneCampaign = campaigns?.scenes;
const campaignIndex = campaigns?.index;

const campaignScenes = computed(() => scenes.value.flatMap((scene, index) => (sceneCampaign && index === campaignIndex ? ['campaign', scene] : scene)));

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' ? `_${entity.slug}` : entity?.slug;
	const entitySlug = entity && `${entityPrefixes[entity.type]}${entity.slug}`;

	loading.value = true;

	navigate(getPath(scope.value, false), {
		...query,
		years: filters.value.years.join(',') || undefined,
		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,
		at: (filters.value.tags.length > 0 && filters.value.onlyActorTags) || undefined,
		// e: filters.value.entity?.type === 'network' ? `_${filters.value.entity.slug}` : (filters.value.entity?.slug || undefined),
		e: filters.value.entity ? `${entityPrefixes[filters.value.entity.type]}${filters.value.entity.slug}` : undefined,
	}, { redirect: false });

	const res = await get('/scenes', {
		...query,
		years: filters.value.years.filter(Boolean).join(','), // if we're on an actor page, that actor ID needs to be included
		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(','),
		at: !!filters.value.onlyActorTags,
		stashId: pageStash?.id,
		e: entitySlug,
		scope: scope.value,
		page: currentPage.value, // client uses param rather than query pagination
	});

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

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

	// events.emit('scrollUp');
	scenesContainer.value?.scrollIntoView(true);
}

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

	if (reload) {
		search();
	}
}

function setView(newView) {
	view.value = newView;
	Cookies.set('scenesView', newView);
}
</script>

<template>
	<div
		class="scenes-page"
		:class="{ [view]: true }"
	>
		<transition name="sidebar">
			<Filters
				v-if="showFilters"
				:loading="loading"
			>
				<div class="filter search-container">
					<!-- onsearch not compatible with FF and Safari -->
					<input
						v-model="filters.search"
						type="input"
						placeholder="Search scenes"
						class="search input"
						@keydown.enter="search"
					>

					<Icon
						v-if="filters.search"
						icon="cross2"
						class="search-button"
						@click="filters.search = ''; search()"
					/>

					<Icon
						icon="search"
						class="search-button"
						@click="search"
					/>
				</div>

				<YearsFilter
					:filters="filters"
					:years="aggYears"
					@update="updateFilter"
				/>

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

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

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

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

				<Campaign
					v-if="campaigns?.meta"
					:campaign="campaigns.meta"
					class="campaign-meta"
				/>

				<div class="views">
					<div class="view-toggles noselect">
						<Icon
							v-show="view === 'grid'"
							icon="menu3"
							class="view-toggle"
							@click="setView('list')"
						/>

						<Icon
							v-show="view === 'list'"
							icon="grid6"
							class="view-toggle"
							@click="setView('grid')"
						/>
					</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="latest">Latest</option>
						<option value="upcoming">Upcoming</option>
						<option value="new">New</option>
						<option value="likes">Popular</option>
					</select>
				</div>
			</div>

			<nav
				v-if="showScopeTabs"
				class="scopes"
			>
				<div class="views">
					<div class="scopes-pills">
						<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>
					</div>

					<div class="view-toggles noselect">
						<Icon
							v-show="view === 'grid'"
							icon="menu3"
							class="view-toggle"
							@click="setView('list')"
						/>

						<Icon
							v-show="view === 'list'"
							icon="grid6"
							class="view-toggle"
							@click="setView('grid')"
						/>
					</div>
				</div>

				<Campaign
					v-if="campaigns?.scope"
					:campaign="campaigns.scope"
					class="campaign-scope"
				/>
			</nav>

			<div class="scenes-items">
				<ul class="scenes nolist">
					<template v-for="item in campaignScenes">
						<li
							v-if="item === 'campaign' && sceneCampaign"
							:key="`campaign-${item.id}`"
						>
							<Campaign
								:campaign="sceneCampaign"
								:backdrop="true"
								class="campaign-scene"
							/>
						</li>

						<li
							v-else
							:key="`scene-${item.id}`"
						>
							<SceneTile
								:scene="item"
								:class="{ [view]: true }"
							/>
						</li>
					</template>
				</ul>
			</div>

			<Pagination
				:total="total"
				:page="currentPage"
			/>
		</div>

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

<style scoped>
.scenes-page {
	display: flex;
	background: var(--background-base-10);
	position: relative;
	flex-grow: 1;
}

.scenes-header {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	padding: .5rem 1rem .25rem 4rem;

	.campaign {
		max-height: 6rem;
		justify-content: center;
		margin: .5rem 1rem 0 1rem;
		/* makes empty area link to ad, bit too annoying
		width: 0;
		flex-grow: 1;
		*/
	}
}

.scenes-container {
	display: flex;
	flex-direction: column;
	flex-grow: 1;
	scroll-margin-top: 3rem; /* ensure scroll into view includes meta bar */
}

.meta {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-shrink: 0;
	margin-bottom: .5rem;
}

.scenes-items {
	/* grow additional container to prevent gaps between grid tiles */
	flex-grow: 1;
}

.scenes {
	display: grid;
    grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
	grid-auto-rows: min-content;
	gap: .5rem;
	padding: .5rem 1rem 1rem 1rem;
}

:deep(.campaign-meta) .campaign-banner,
:deep(.campaign-scope) .campaign-banner {
	width: auto;
}

.campaign-scene {
	width: 100%;
	aspect-ratio: 2 / 1; /* ensures banner can't be taller than scene tile */
}

.scopes {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	padding: .75rem 1rem .25rem 1rem;

	.campaign {
		max-height: 6rem;
		justify-content: flex-end;
		margin-left: 1rem;
	}
}

.views {
	display: flex;
	align-items: center;
	justify-content: flex-end;
}

.view-toggles {
	display: none;
	margin-left: .5rem;
}

.view-toggle {
	padding: .5rem 1rem;
	fill: var(--glass);

	&:hover {
		cursor: pointer;
		fill: var(--primary);
	}
}

.scopes-pills {
	display: flex;
	align-items: center;
	gap: .5rem;
}

.scope {
	box-sizing: border-box;
	padding: .5rem 1rem;
	background: var(--background-dark-20);
	border-radius: 1rem;
	color: var(--glass);
	font-size: .9rem;
	font-weight: bold;

	&.active {
		background: var(--primary);
		color: var(--text-light);
	}
}

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

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

	&.loading {
		display: flex;
	}
}

@media(--small-10) {
	.scenes {
		grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
	}

	.scopes {
		justify-content: center;
		flex-direction: column-reverse;
		padding: 0 0 .25rem 0;

		.campaign {
			width: 100%;
			justify-content: center;
			margin-left: 0;
			margin-bottom: 1rem;
		}
	}

	.scopes-pills {
		width: 100%;
		justify-content: center;
		padding: 0 1rem 0 1rem;
	}

	.scopes .views {
		width: 100%;
	}
}

@media(--small-20) {
	.list {
		.scenes {
			grid-template-columns: 1fr;
		}
	}

	.scenes {
		padding: .5rem .5rem 1rem .5rem;
	}

	.view-toggles {
		display: flex;
	}

	.scopes-pills {
		justify-content: flex-start;
	}
}
</style>
