<template>
<MkStickyContainer>
	<template #header><MkPageHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs"/></template>
	<MkSpacer :content-max="600" :margin-min="20">
		<swiper
			:modules="[Virtual]"
			:space-between="20"
			:virtual="true"
			:allow-touch-move="!(deviceKind === 'desktop' && !defaultStore.state.swipeOnDesktop)"
			@swiper="setSwiperRef"
			@slide-change="onSlideChange"
		>
			<swiper-slide>
				<div class="_formRoot">
					<div class="_formBlock fwhjspax" :style="{ backgroundImage: `url(${ $instance.bannerUrl })` }">
						<div class="content">
							<img ref="instanceIcon" :src="defaultStore.state.woozyMode === true ? '/static-assets/woozy.png' : $instance.iconUrl || $instance.faviconUrl || '/favicon.ico'" aria-label="none" class="icon" @click="easterEgg"/>
							<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>Calckey</template>
							<template #value>{{ version }}</template>
						</MkKeyValue>
						<FormLink to="/about-calckey">{{ 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>
			</swiper-slide>
			<swiper-slide>
				<XEmojis/>
			</swiper-slide>
			<swiper-slide>
				<MkInstanceStats :chart-limit="500" :detailed="true"/>
			</swiper-slide>
			<swiper-slide>
				<XFederation/>
			</swiper-slide>
		</swiper>
	</MkSpacer>
</MkStickyContainer>
</template>

<script lang="ts" setup>
import { ref, computed, onMounted, watch } from 'vue';
import { Virtual } from 'swiper';
import { Swiper, SwiperSlide } from 'swiper/vue';
import XEmojis from './about.emojis.vue';
import XFederation from './about.federation.vue';
import { version, instanceName , 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/MkKeyValue.vue';
import MkInstanceStats from '@/components/MkInstanceStats.vue';
import * as os from '@/os';
import number from '@/filters/number';
import { i18n } from '@/i18n';
import { definePageMetadata } from '@/scripts/page-metadata';
import { deviceKind } from '@/scripts/device-kind';
import { iAmModerator } from '@/account';
import { defaultStore } from '@/store';
import 'swiper/scss';
import 'swiper/scss/virtual';

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

let stats = $ref(null);
let instanceIcon = $ref<HTMLImageElement>();
let iconClicks = 0;
let tabs = ['overview', 'emojis', 'charts'];
let tab = $ref(tabs[0]);
watch($$(tab), () => (syncSlide(tabs.indexOf(tab))));

if (iAmModerator) tabs.push('federation');

const initStats = () => os.api('stats', {
}).then((res) => {
	stats = res;
});

const headerActions = $computed(() => []);

let theTabs = [{
	key: 'overview',
	title: i18n.ts.overview,
	icon: 'ph-map-trifold-bold ph-lg',
}, {
	key: 'emojis',
	title: i18n.ts.customEmojis,
	icon: 'ph-smiley-bold ph-lg',
}, {
	key: 'charts',
	title: i18n.ts.charts,
	icon: 'ph-chart-bar-bold ph-lg',
}];

if (iAmModerator) {
	theTabs.push(
		{
			key: 'federation',
			title: i18n.ts.federation,
			icon: 'ph-planet-bold ph-lg',
		},
	);
}

let headerTabs = $computed(() => theTabs);

definePageMetadata(computed(() => ({
	title: i18n.ts.instanceInfo,
	icon: 'ph-info-bold ph-lg',
})));

async function sleep(seconds) {
	return new Promise((resolve) => setTimeout(resolve, seconds * 1000));
}

async function easterEgg(): Promise<void> {
	iconClicks++;
	instanceIcon.style.animation = 'unset';
	await sleep(0.1);
	const normalizedCount = (iconClicks % 3) + 1;
	instanceIcon.style.animation = `iconShake${normalizedCount} 0.${normalizedCount}s 1`;
	if (iconClicks % 3 === 0) {
		defaultStore.state.set('woozyMode', !defaultStore.state.woozyMode);
		await sleep(0.4);
		instanceIcon.style.animation = 'unset';
		instanceIcon.style.animation = 'swpinY 0.9s 1';
	}
}

let swiperRef = null;

function setSwiperRef(swiper) {
	swiperRef = swiper;
	syncSlide(tabs.indexOf(tab));
}

function onSlideChange() {
	tab = tabs[swiperRef.activeIndex];
}

function syncSlide(index) {
	swiperRef.slideTo(index);
}

</script>

<style lang="scss" scoped>
@keyframes iconShake1 {
	0% { transform: translate(2px, 0px) rotate(-1deg) }
	10% { transform: translate(2px, -3px) rotate(5deg) }
	20% { transform: translate(-1px, -3px) rotate(3deg) }
	30% { transform: translate(-2px, 0px) rotate(-1deg) }
	40% { transform: translate(-2px, -1px) rotate(4deg) }
	50% { transform: translate(-1px, -1px) rotate(1deg) }
	60% { transform: translate(-2px, 0px) rotate(-8deg) }
	70% { transform: translate(1px, 2px) rotate(-2deg) }
	80% { transform: translate(-1px, 2px) rotate(4deg) }
	90% { transform: translate(-1px, 1px) rotate(11deg) }
	100% { transform: translate(-3px, -3px) rotate(-5deg) }
}

@keyframes iconShake2 {
	0% { transform: translate(-1px, 5px) rotate(33deg) }
	10% { transform: translate(-2px, 7px) rotate(20deg) }
	20% { transform: translate(8px, 5px) rotate(31deg) }
	30% { transform: translate(-2px, 5px) rotate(3deg) }
	40% { transform: translate(4px, 6px) rotate(16deg) }
	50% { transform: translate(8px, -3px) rotate(19deg) }
	60% { transform: translate(7px, -2px) rotate(0deg) }
	70% { transform: translate(4px, 4px) rotate(8deg) }
	80% { transform: translate(7px, -3px) rotate(13deg) }
	90% { transform: translate(6px, 7px) rotate(4deg) }
	100% { transform: translate(4px, -2px) rotate(-2deg) }
}

@keyframes iconShake3 {
	0% { transform: translate(12px, -2px) rotate(57deg) }
	10% { transform: translate(10px, 2px) rotate(12deg) }
	20% { transform: translate(10px, 4px) rotate(3deg) }
	30% { transform: translate(17px, 11px) rotate(15deg) }
	40% { transform: translate(12px, 20px) rotate(-11deg) }
	50% { transform: translate(5px, 12px) rotate(43deg) }
	60% { transform: translate(16px, 8px) rotate(-4deg) }
	70% { transform: translate(14px, 11px) rotate(22deg) }
	80% { transform: translate(9px, 19px) rotate(-3deg) }
	90% { transform: translate(0px, 12px) rotate(-3deg) }
	100% { transform: translate(17px, 3px) rotate(57deg) }
}

@keyframes spinY {
	0% { transform: perspective(128px) rotateY(0deg); }
	100% { transform: perspective(128px) rotateY(360deg); }
}

.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: #e0def4;
			text-shadow: 0 0 8px #000;
			background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
		}
	}
}
</style>
