<!--
SPDX-FileCopyrightText: syuilo and other misskey contributors
SPDX-License-Identifier: AGPL-3.0-only
-->

<template>
<div
	ref="playerEl"
	:class="[
		$style.videoContainer,
		controlsShowing && $style.active,
		(video.isSensitive && defaultStore.state.highlightSensitiveMedia) && $style.sensitive,
	]"
	@mouseover="onMouseOver"
	@mouseleave="onMouseLeave"
	@contextmenu.stop
>
	<button v-if="hide" :class="$style.hidden" @click="hide = false">
		<div :class="$style.hiddenTextWrapper">
			<b v-if="video.isSensitive" style="display: block;"><i class="ph-warning ph-bold ph-lg"></i> {{ i18n.ts.sensitive }}{{ defaultStore.state.dataSaver.media ? ` (${i18n.ts.video}${video.size ? ' ' + bytes(video.size) : ''})` : '' }}</b>
			<b v-else style="display: block;"><i class="ph-film-strip ph-bold ph-lg"></i> {{ defaultStore.state.dataSaver.media && video.size ? bytes(video.size) : i18n.ts.video }}</b>
			<span style="display: block;">{{ i18n.ts.clickToShow }}</span>
		</div>
	</button>
	<div v-else :class="$style.videoRoot" @click.self="togglePlayPause">
		<video
			ref="videoEl"
			:class="$style.video"
			:poster="video.thumbnailUrl ?? undefined"
			:title="video.comment ?? undefined"
			:alt="video.comment"
			preload="metadata"
			playsinline
		>
			<source :src="video.url">
		</video>
		<button v-if="isReady && !isPlaying" class="_button" :class="$style.videoOverlayPlayButton" @click="togglePlayPause"><i class="ph-play ph-bold ph-lg"></i></button>
		<div v-else-if="!isActuallyPlaying" :class="$style.videoLoading">
			<MkLoading/>
		</div>
		<i class="ph-eye-closed ph-bold ph-lg" :class="$style.hide" @click="hide = true"></i>
		<div :class="$style.indicators">
			<div v-if="video.comment" :class="$style.indicator">ALT</div>
			<div v-if="video.isSensitive" :class="$style.indicator" style="color: var(--warn);" :title="i18n.ts.sensitive"><i class="ph-warning ph-bold ph-lg"></i></div>
		</div>
		<div :class="$style.videoControls" @click.self="togglePlayPause">
			<div :class="[$style.controlsChild, $style.controlsLeft]">
				<button class="_button" :class="$style.controlButton" @click="togglePlayPause">
					<i v-if="isPlaying" class="ph-pause ph-bold ph-lg"></i>
					<i v-else class="ph-play ph-bold ph-lg"></i>
				</button>
			</div>
			<div :class="[$style.controlsChild, $style.controlsRight]">
				<button class="_button" :class="$style.controlButton" @click="showMenu">
					<i class="ph-settings ph-bold ph-lg"></i>
				</button>
				<button class="_button" :class="$style.controlButton" @click="toggleFullscreen">
					<i v-if="isFullscreen" class="ph-arrows-in ph-bold ph-lg"></i>
					<i v-else class="ph-arrows-out ph-bold ph-lg"></i>
				</button>
			</div>
			<div :class="[$style.controlsChild, $style.controlsTime]">{{ hms(elapsedTimeMs) }}</div>
			<div :class="[$style.controlsChild, $style.controlsVolume]">
				<button class="_button" :class="$style.controlButton" @click="toggleMute">
					<i v-if="volume === 0" class="ph-speaker-x ph-bold ph-lg"></i>
					<i v-else class="ph-speaker-high ph-bold ph-lg"></i>
				</button>
				<MkMediaRange
					v-model="volume"
					:sliderBgWhite="true"
					:class="$style.volumeSeekbar"
				/>
			</div>
			<MkMediaRange
				v-model="rangePercent"
				:sliderBgWhite="true"
				:class="$style.seekbarRoot"
				:buffer="bufferedDataRatio"
			/>
		</div>
	</div>
</div>
</template>

<script lang="ts" setup>
import { ref, shallowRef, computed, watch, onDeactivated, onActivated, onMounted } from 'vue';
import * as Misskey from 'misskey-js';
import type { MenuItem } from '@/types/menu.js';
import bytes from '@/filters/bytes.js';
import { hms } from '@/filters/hms.js';
import { defaultStore } from '@/store.js';
import { i18n } from '@/i18n.js';
import * as os from '@/os.js';
import { isFullscreenNotSupported } from '@/scripts/device-kind.js';
import hasAudio from '@/scripts/media-has-audio.js';
import MkMediaRange from '@/components/MkMediaRange.vue';
import { iAmModerator } from '@/account.js';

const props = defineProps<{
	video: Misskey.entities.DriveFile;
}>();

// eslint-disable-next-line vue/no-setup-props-destructure
const hide = ref((defaultStore.state.nsfw === 'force' || defaultStore.state.dataSaver.media) ? true : (props.video.isSensitive && defaultStore.state.nsfw !== 'ignore'));

// Menu
const menuShowing = ref(false);

function showMenu(ev: MouseEvent) {
	let menu: MenuItem[] = [];

	menu = [
		// TODO: 再生キューに追加
		{
			text: i18n.ts.hide,
			icon: 'ph-eye-closed ph-bold ph-lg',
			action: () => {
				hide.value = true;
			},
		},
	];

	if (iAmModerator) {
		menu.push({
			type: 'divider',
		}, {
			text: props.video.isSensitive ? i18n.ts.unmarkAsSensitive : i18n.ts.markAsSensitive,
			icon: props.video.isSensitive ? 'ph-eye ph-bold ph-lg' : 'ph-eye-slash ph-bold ph-lg',
			danger: true,
			action: () => toggleSensitive(props.video),
		});
	}

	menuShowing.value = true;
	os.popupMenu(menu, ev.currentTarget ?? ev.target, {
		align: 'right',
		onClosing: () => {
			menuShowing.value = false;
		},
	});
}

function toggleSensitive(file: Misskey.entities.DriveFile) {
	os.apiWithDialog('drive/files/update', {
		fileId: file.id,
		isSensitive: !file.isSensitive,
	});
}

// MediaControl: Video State
const videoEl = shallowRef<HTMLVideoElement>();
const playerEl = shallowRef<HTMLDivElement>();
const isHoverring = ref(false);
const controlsShowing = computed(() => {
	if (!oncePlayed.value) return true;
	if (isHoverring.value) return true;
	if (menuShowing.value) return true;
	return false;
});
const isFullscreen = ref(false);
let controlStateTimer: string | number;

// MediaControl: Common State
const oncePlayed = ref(false);
const isReady = ref(false);
const isPlaying = ref(false);
const isActuallyPlaying = ref(false);
const elapsedTimeMs = ref(0);
const durationMs = ref(0);
const rangePercent = computed({
	get: () => {
		return (elapsedTimeMs.value / durationMs.value) || 0;
	},
	set: (to) => {
		if (!videoEl.value) return;
		videoEl.value.currentTime = to * durationMs.value / 1000;
	},
});
const volume = ref(.25);
const bufferedEnd = ref(0);
const bufferedDataRatio = computed(() => {
	if (!videoEl.value) return 0;
	return bufferedEnd.value / videoEl.value.duration;
});

// MediaControl Events
function onMouseOver() {
	if (controlStateTimer) {
		clearTimeout(controlStateTimer);
	}
	isHoverring.value = true;
}

function onMouseLeave() {
	controlStateTimer = window.setTimeout(() => {
		isHoverring.value = false;
	}, 100);
}

function togglePlayPause() {
	if (!isReady.value || !videoEl.value) return;

	if (isPlaying.value) {
		videoEl.value.pause();
		isPlaying.value = false;
	} else {
		videoEl.value.play();
		isPlaying.value = true;
		oncePlayed.value = true;
	}
}

function toggleFullscreen() {
	if (isFullscreenNotSupported && videoEl.value) {
		if (isFullscreen.value) {
			// eslint-disable-next-line @typescript-eslint/ban-ts-comment
			//@ts-ignore
			videoEl.value.webkitExitFullscreen();
			isFullscreen.value = false;
		} else {
			// eslint-disable-next-line @typescript-eslint/ban-ts-comment
			//@ts-ignore
			videoEl.value.webkitEnterFullscreen();
			isFullscreen.value = true;
		}
	} else if (playerEl.value) {
		if (isFullscreen.value) {
			document.exitFullscreen();
			isFullscreen.value = false;
		} else {
			playerEl.value.requestFullscreen({ navigationUI: 'hide' });
			isFullscreen.value = true;
		}
	}
}

function toggleMute() {
	if (volume.value === 0) {
		volume.value = .25;
	} else {
		volume.value = 0;
	}
}

let onceInit = false;
let stopVideoElWatch: () => void;

function init() {
	if (onceInit) return;
	onceInit = true;

	stopVideoElWatch = watch(videoEl, () => {
		if (videoEl.value) {
			isReady.value = true;

			function updateMediaTick() {
				if (videoEl.value) {
					try {
						bufferedEnd.value = videoEl.value.buffered.end(0);
					} catch (err) {
						bufferedEnd.value = 0;
					}

					elapsedTimeMs.value = videoEl.value.currentTime * 1000;
				}
				window.requestAnimationFrame(updateMediaTick);
			}

			updateMediaTick();

			videoEl.value.addEventListener('play', () => {
				isActuallyPlaying.value = true;
			});

			videoEl.value.addEventListener('pause', () => {
				isActuallyPlaying.value = false;
				isPlaying.value = false;
			});

			videoEl.value.addEventListener('ended', () => {
				oncePlayed.value = false;
				isActuallyPlaying.value = false;
				isPlaying.value = false;
			});

			durationMs.value = videoEl.value.duration * 1000;
			videoEl.value.addEventListener('durationchange', () => {
				if (videoEl.value) {
					durationMs.value = videoEl.value.duration * 1000;
				}
			});

			videoEl.value.volume = volume.value;
			hasAudio(videoEl.value).then(had => {
				if (!had && videoEl.value) {
					videoEl.value.loop = videoEl.value.muted = true;
					videoEl.value.play();
				}
			});
		}
	}, {
		immediate: true,
	});
}

watch(volume, (to) => {
	if (videoEl.value) videoEl.value.volume = to;
});

watch(hide, (to) => {
	if (to && isFullscreen.value) {
		document.exitFullscreen();
		isFullscreen.value = false;
	}
});

onMounted(() => {
	init();
});

onActivated(() => {
	init();
});

onDeactivated(() => {
	isReady.value = false;
	isPlaying.value = false;
	isActuallyPlaying.value = false;
	elapsedTimeMs.value = 0;
	durationMs.value = 0;
	bufferedEnd.value = 0;
	hide.value = (defaultStore.state.nsfw === 'force' || defaultStore.state.dataSaver.media) ? true : (props.video.isSensitive && defaultStore.state.nsfw !== 'ignore');
	stopVideoElWatch();
	onceInit = false;
});
</script>

<style lang="scss" module>
.videoContainer {
	container-type: inline-size;
	position: relative;
	overflow: clip;
}

.sensitive {
	position: relative;

	&::after {
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		pointer-events: none;
		border-radius: inherit;
		box-shadow: inset 0 0 0 4px var(--warn);
	}
}

.indicators {
	display: inline-flex;
	position: absolute;
	top: 10px;
	left: 10px;
	pointer-events: none;
	opacity: .5;
	gap: 6px;
}

.indicator {
	/* Hardcode to black because either --bg or --fg makes it hard to read in dark/light mode */
	background-color: black;
	border-radius: 6px;
	color: var(--accentLighten);
	display: inline-block;
	font-weight: bold;
	font-size: 0.8em;
	padding: 2px 5px;
}

.hide {
	display: block;
	position: absolute;
	border-radius: var(--radius-sm);
	background-color: black;
	color: var(--accentLighten);
	font-size: 12px;
	opacity: .5;
	padding: 5px 8px;
	text-align: center;
	cursor: pointer;
	top: 12px;
	right: 12px;
}

.hidden {
	width: 100%;
	background: none;
	border: none;
	outline: none;
	font: inherit;
	color: inherit;
	cursor: pointer;
	padding: 120px 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #000;
}

.hiddenTextWrapper {
	text-align: center;
	font-size: 0.8em;
	color: #fff;
}

.videoRoot {
	background: #000;
	position: relative;
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.video {
	display: block;
	height: 100%;
	width: 100%;
	pointer-events: none;
}

.videoOverlayPlayButton {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);

	opacity: 0;
	transition: opacity .4s ease-in-out;

	background: var(--accent);
	color: #fff;
	padding: 1rem;
	border-radius: 99rem;

	font-size: 1.1rem;
}

.videoLoading {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.videoControls {
	display: grid;
	grid-template-areas:
		"left time . volume right"
		"seekbar seekbar seekbar seekbar seekbar";
	grid-template-columns: auto auto 1fr auto auto;
	align-items: center;
	gap: 4px 8px;
	pointer-events: none;

	padding: 35px 10px 10px 10px;
	background: linear-gradient(rgba(0, 0, 0, 0),rgba(0, 0, 0, .75));

	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;

	transform: translateY(100%);
	pointer-events: none;
	opacity: 0;
	transition: opacity .4s ease-in-out, transform .4s ease-in-out;
}

.active {
	.videoControls {
		transform: translateY(0);
		opacity: 1;
		pointer-events: auto;
	}

	.videoOverlayPlayButton {
		opacity: 1;
	}
}

.controlsChild {
	display: flex;
	align-items: center;
	gap: 4px;
	color: #fff;

	.controlButton {
		padding: 6px;
		border-radius: calc(var(--radius) / 2);
		transition: background-color .2s ease-in-out;
		font-size: 1.05rem;

		&:hover {
			background-color: var(--accent);
		}
	}
}

.controlsLeft {
	grid-area: left;
}

.controlsRight {
	grid-area: right;
}

.controlsTime {
	grid-area: time;
	font-size: .9rem;
}

.controlsVolume {
	grid-area: volume;

	.volumeSeekbar {
		display: none;
	}
}

.seekbarRoot {
	grid-area: seekbar;
	/* ▼シークバー操作をやりやすくするためにクリックイベントが伝播されないエリアを拡張する */
	margin: -10px;
	padding: 10px;
}

@container (min-width: 500px) {
	.videoControls {
		grid-template-areas: "left seekbar time volume right";
		grid-template-columns: auto 1fr auto auto auto;
	}

	.controlsVolume {
		.volumeSeekbar {
			max-width: 90px;
			display: block;
			flex-grow: 1;
		}
	}
}
.indicators {
	display: inline-flex;
	position: absolute;
	top: 10px;
	left: 10px;
	pointer-events: none;
	opacity: .5;
	gap: 6px;
}

.indicator {
	/* Hardcode to black because either --bg or --fg makes it hard to read in dark/light mode */
	background-color: black;
	border-radius: var(--radius-sm);
	color: var(--accentLighten);
	display: inline-block;
	font-weight: bold;
	font-size: 0.8em;
	padding: 2px 5px;
}
</style>
