<template>
<MkStickyContainer>
	<template #header><MkPageHeader v-model:tab="tab" :tabs="headerTabs"/></template>
	<MkSpacer v-if="tab === 'overview'" :content-max="600" :margin-min="20">
		<div class="_formRoot">
			<div class="_formBlock fwhjspax" :style="{ backgroundImage: `url(${ $instance.bannerUrl })` }">
				<div class="content">
					<img :src="$instance.iconUrl || $instance.faviconUrl || '/favicon.ico'" alt="" class="icon"/>
					<div class="name">
						<b>{{ $instance.name || host }}</b>
					</div>
				</div>
			</div>

			<MkKeyValue class="_formBlock">
				<template #key>{{ i18n.ts.description }}</template>
				<template #value>{{ $instance.description }}</template>
			</MkKeyValue>

			<FormSection>
				<MkKeyValue class="_formBlock" :copy="version">
					<template #key>{{ i18n.ts.version }}</template>
					<template #value>{{ version }}</template>
				</MkKeyValue>
				<FormLink to="/about-foundkey">{{ i18n.ts.aboutMisskey }}</FormLink>
			</FormSection>

			<FormSection>
				<FormSplit>
					<MkKeyValue class="_formBlock">
						<template #key>{{ i18n.ts.administrator }}</template>
						<template #value>{{ $instance.maintainerName }}</template>
					</MkKeyValue>
					<MkKeyValue class="_formBlock">
						<template #key>{{ i18n.ts.contact }}</template>
						<template #value>{{ $instance.maintainerEmail }}</template>
					</MkKeyValue>
				</FormSplit>
				<FormLink v-if="$instance.tosUrl" :to="$instance.tosUrl" class="_formBlock" external>{{ i18n.ts.tos }}</FormLink>
			</FormSection>

			<FormSuspense :p="initStats">
				<FormSection>
					<template #label>{{ i18n.ts.statistics }}</template>
					<FormSplit>
						<MkKeyValue class="_formBlock">
							<template #key>{{ i18n.ts.users }}</template>
							<template #value>{{ number(stats?.originalUsersCount) }}</template>
						</MkKeyValue>
						<MkKeyValue class="_formBlock">
							<template #key>{{ i18n.ts.notes }}</template>
							<template #value>{{ number(stats?.originalNotesCount) }}</template>
						</MkKeyValue>
					</FormSplit>
				</FormSection>
			</FormSuspense>

			<FormSection>
				<template #label>Well-known resources</template>
				<div class="_formLinks">
					<FormLink :to="`/.well-known/host-meta`" external>host-meta</FormLink>
					<FormLink :to="`/.well-known/host-meta.json`" external>host-meta.json</FormLink>
					<FormLink :to="`/.well-known/nodeinfo`" external>nodeinfo</FormLink>
					<FormLink :to="`/robots.txt`" external>robots.txt</FormLink>
					<FormLink :to="`/manifest.json`" external>manifest.json</FormLink>
				</div>
			</FormSection>
		</div>
	</MkSpacer>
	<MkSpacer v-else-if="tab === 'emojis'" :content-max="1000" :margin-min="20">
		<XEmojis/>
	</MkSpacer>
	<MkSpacer v-else-if="tab === 'federation'" :content-max="1000" :margin-min="20">
		<XFederation/>
	</MkSpacer>
	<MkSpacer v-else-if="tab === 'charts'" :content-max="1200" :margin-min="20">
		<MkInstanceStats :chart-limit="500" :detailed="true"/>
	</MkSpacer>
</MkStickyContainer>
</template>

<script lang="ts" setup>
import { computed } from 'vue';
import * as foundkey from 'foundkey-js';
import XEmojis from './about.emojis.vue';
import XFederation from '@/components/federation.vue';
import { version, host } from '@/config';
import FormLink from '@/components/form/link.vue';
import FormSection from '@/components/form/section.vue';
import FormSuspense from '@/components/form/suspense.vue';
import FormSplit from '@/components/form/split.vue';
import MkKeyValue from '@/components/key-value.vue';
import MkInstanceStats from '@/components/instance-stats.vue';
import * as os from '@/os';
import number from '@/filters/number';
import { i18n } from '@/i18n';
import { definePageMetadata } from '@/scripts/page-metadata';

const headerTabs = $computed(() => [{
	key: 'overview',
	title: i18n.ts.overview,
}, {
	key: 'emojis',
	title: i18n.ts.customEmojis,
	icon: 'fas fa-laugh',
}, {
	key: 'federation',
	title: i18n.ts.federation,
	icon: 'fas fa-globe',
}, {
	key: 'charts',
	title: i18n.ts.charts,
	icon: 'fas fa-chart-simple',
}]);

const props = withDefaults(defineProps<{
	initialTab?: string;
}>(), {
	initialTab: 'overview',
});

let stats: foundkey.entities.Stats | null = $ref(null);
let tab = $ref(headerTabs.some(({ key }) => key === props.initialTab) ? props.initialTab : 'overview');

const initStats = async (): Promise<void> => {
	stats = await os.api('stats', {});
};

definePageMetadata(computed(() => ({
	title: i18n.ts.instanceInfo,
	icon: 'fas fa-info-circle',
})));
</script>

<style lang="scss" scoped>
.fwhjspax {
	text-align: center;
	border-radius: 10px;
	overflow: clip;
	background-size: cover;
	background-position: center center;

	> .content {
		overflow: hidden;

		> .icon {
			display: block;
			margin: 16px auto 0 auto;
			height: 64px;
			border-radius: 8px;
		}

		> .name {
			display: block;
			padding: 16px;
			color: #fff;
			text-shadow: 0 0 8px #000;
			background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
		}
	}
}
</style>
