<template>
<MkStickyContainer>
	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
	<MkSpacer :contentMax="700">
		<div v-if="channelId == null || channel != null" class="_gaps_m">
			<MkInput v-model="name">
				<template #label>{{ i18n.ts.name }}</template>
			</MkInput>

			<MkTextarea v-model="description">
				<template #label>{{ i18n.ts.description }}</template>
			</MkTextarea>

			<MkColorInput v-model="color">
				<template #label>{{ i18n.ts.color }}</template>
			</MkColorInput>

			<div>
				<MkButton v-if="bannerId == null" @click="setBannerImage"><i class="ti ti-plus"></i> {{ i18n.ts._channel.setBanner }}</MkButton>
				<div v-else-if="bannerUrl">
					<img :src="bannerUrl" style="width: 100%;"/>
					<MkButton @click="removeBannerImage()"><i class="ti ti-trash"></i> {{ i18n.ts._channel.removeBanner }}</MkButton>
				</div>
			</div>

			<MkFolder :defaultOpen="true">
				<template #label>{{ i18n.ts.pinnedNotes }}</template>
				
				<div class="_gaps">
					<MkButton primary rounded @click="addPinnedNote()"><i class="ti ti-plus"></i></MkButton>

					<Sortable 
						v-model="pinnedNotes"
						itemKey="id"
						:handle="'.' + $style.pinnedNoteHandle"
						:animation="150"
					>
						<template #item="{element,index}">
							<div :class="$style.pinnedNote">
								<button class="_button" :class="$style.pinnedNoteHandle"><i class="ti ti-menu"></i></button>
								{{ element.id }}
								<button class="_button" :class="$style.pinnedNoteRemove" @click="removePinnedNote(index)"><i class="ti ti-x"></i></button>
							</div>
						</template>
					</Sortable>
				</div>
			</MkFolder>

			<div class="_buttons">
				<MkButton primary @click="save()"><i class="ti ti-device-floppy"></i> {{ channelId ? i18n.ts.save : i18n.ts.create }}</MkButton>
				<MkButton v-if="channelId" danger @click="archive()"><i class="ti ti-trash"></i> {{ i18n.ts.archive }}</MkButton>
			</div>
		</div>
	</MkSpacer>
</MkStickyContainer>
</template>

<script lang="ts" setup>
import { computed, ref, watch, defineAsyncComponent } from 'vue';
import MkTextarea from '@/components/MkTextarea.vue';
import MkButton from '@/components/MkButton.vue';
import MkInput from '@/components/MkInput.vue';
import MkColorInput from '@/components/MkColorInput.vue';
import { selectFile } from '@/scripts/select-file';
import * as os from '@/os';
import { useRouter } from '@/router';
import { definePageMetadata } from '@/scripts/page-metadata';
import { i18n } from '@/i18n';
import MkFolder from '@/components/MkFolder.vue';

const Sortable = defineAsyncComponent(() => import('vuedraggable').then(x => x.default));

const router = useRouter();

const props = defineProps<{
	channelId?: string;
}>();

let channel = $ref(null);
let name = $ref(null);
let description = $ref(null);
let bannerUrl = $ref<string | null>(null);
let bannerId = $ref<string | null>(null);
let color = $ref('#000');
const pinnedNotes = ref([]);

watch(() => bannerId, async () => {
	if (bannerId == null) {
		bannerUrl = null;
	} else {
		bannerUrl = (await os.api('drive/files/show', {
			fileId: bannerId,
		})).url;
	}
});

async function fetchChannel() {
	if (props.channelId == null) return;

	channel = await os.api('channels/show', {
		channelId: props.channelId,
	});

	name = channel.name;
	description = channel.description;
	bannerId = channel.bannerId;
	bannerUrl = channel.bannerUrl;
	pinnedNotes.value = channel.pinnedNoteIds.map(id => ({
		id,
	}));
	color = channel.color;
}

fetchChannel();

async function addPinnedNote() {
	const { canceled, result: value } = await os.inputText({
		title: i18n.ts.noteIdOrUrl,
	});
	if (canceled) return;
	const note = await os.apiWithDialog('notes/show', {
		noteId: value.includes('/') ? value.split('/').pop() : value,
	});
	pinnedNotes.value = [{
		id: note.id,
	}, ...pinnedNotes.value];
}

function removePinnedNote(index: number) {
	pinnedNotes.value.splice(index, 1);
}

function save() {
	const params = {
		name: name,
		description: description,
		bannerId: bannerId,
		pinnedNoteIds: pinnedNotes.value.map(x => x.id),
		color: color,
	};

	if (props.channelId) {
		params.channelId = props.channelId;
		os.api('channels/update', params).then(() => {
			os.success();
		});
	} else {
		os.api('channels/create', params).then(created => {
			os.success();
			router.push(`/channels/${created.id}`);
		});
	}
}

async function archive() {
	const { canceled } = await os.confirm({
		type: 'warning',
		title: i18n.t('channelArchiveConfirmTitle', { name: name }),
		text: i18n.ts.channelArchiveConfirmDescription,
	});

	if (canceled) return;
	
	os.api('channels/update', {
		channelId: props.channelId,
		isArchived: true,
	}).then(() => {
		os.success();
	});
}

function setBannerImage(evt) {
	selectFile(evt.currentTarget ?? evt.target, null).then(file => {
		bannerId = file.id;
	});
}

function removeBannerImage() {
	bannerId = null;
}

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

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

definePageMetadata(computed(() => props.channelId ? {
	title: i18n.ts._channel.edit,
	icon: 'ti ti-device-tv',
} : {
	title: i18n.ts._channel.create,
	icon: 'ti ti-device-tv',
}));
</script>

<style lang="scss" module>
.pinnedNote {
	position: relative;
	display: block;
	line-height: 2.85rem;
	text-overflow: ellipsis;
	overflow: hidden;
	white-space: nowrap;
	color: var(--navFg);
}

.pinnedNoteRemove {
	position: absolute;
	z-index: 10000;
	width: 32px;
	height: 32px;
	color: #ff2a2a;
	right: 8px;
	opacity: 0.8;
}

.pinnedNoteHandle {
	cursor: move;
	width: 32px;
	height: 32px;
	margin: 0 8px;
	opacity: 0.5;
}
</style>
