<template>
<MkStickyContainer>
	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
	<MkSpacer :content-max="800">
		<div class="fcuexfpr">
			<transition :name="$store.state.animation ? 'fade' : ''" mode="out-in">
				<div v-if="note" class="note">
					<div v-if="showNext" class="_gap">
						<XNotes class="_content" :pagination="nextPagination" :no-gap="true"/>
					</div>

					<div class="main _gap">
						<MkButton v-if="!showNext && hasNext" class="load next" @click="showNext = true"><i class="fas fa-chevron-up"></i></MkButton>
						<div class="note _gap">
							<MkRemoteCaution v-if="note.user.host != null" :href="note.url ?? note.uri"/>
							<XNoteDetailed :key="note.id" v-model:note="note" class="note"/>
						</div>
						<div v-if="clips && clips.length > 0" class="_content clips _gap">
							<div class="title">{{ i18n.ts.clip }}</div>
							<MkA v-for="item in clips" :key="item.id" :to="`/clips/${item.id}`" class="item _panel _gap">
								<b>{{ item.name }}</b>
								<div v-if="item.description" class="description">{{ item.description }}</div>
								<div class="user">
									<MkAvatar :user="item.user" class="avatar" :show-indicator="true"/> <MkUserName :user="item.user" :nowrap="false"/>
								</div>
							</MkA>
						</div>
						<MkButton v-if="!showPrev && hasPrev" class="load prev" @click="showPrev = true"><i class="fas fa-chevron-down"></i></MkButton>
					</div>

					<div v-if="showPrev" class="_gap">
						<XNotes class="_content" :pagination="prevPagination" :no-gap="true"/>
					</div>
				</div>
				<MkError v-else-if="error" @retry="fetch()"/>
				<MkLoading v-else/>
			</transition>
		</div>
	</MkSpacer>
</MkStickyContainer>
</template>

<script lang="ts" setup>
import { computed, defineComponent, watch } from 'vue';
import * as misskey from 'misskey-js';
import XNote from '@/components/note.vue';
import XNoteDetailed from '@/components/note-detailed.vue';
import XNotes from '@/components/notes.vue';
import MkRemoteCaution from '@/components/remote-caution.vue';
import MkButton from '@/components/ui/button.vue';
import * as os from '@/os';
import { definePageMetadata } from '@/scripts/page-metadata';
import { i18n } from '@/i18n';

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

let note = $ref<null | misskey.entities.Note>();
let clips = $ref();
let hasPrev = $ref(false);
let hasNext = $ref(false);
let showPrev = $ref(false);
let showNext = $ref(false);
let error = $ref();

const prevPagination = {
	endpoint: 'users/notes' as const,
	limit: 10,
	params: computed(() => note ? ({
		userId: note.userId,
		untilId: note.id,
	}) : null),
};

const nextPagination = {
	reversed: true,
	endpoint: 'users/notes' as const,
	limit: 10,
	params: computed(() => note ? ({
		userId: note.userId,
		sinceId: note.id,
	}) : null),
};

function fetchNote() {
	hasPrev = false;
	hasNext = false;
	showPrev = false;
	showNext = false;
	note = null;
	os.api('notes/show', {
		noteId: props.noteId,
	}).then(res => {
		note = res;
		Promise.all([
			os.api('notes/clips', {
				noteId: note.id,
			}),
			os.api('users/notes', {
				userId: note.userId,
				untilId: note.id,
				limit: 1,
			}),
			os.api('users/notes', {
				userId: note.userId,
				sinceId: note.id,
				limit: 1,
			}),
		]).then(([_clips, prev, next]) => {
			clips = _clips;
			hasPrev = prev.length !== 0;
			hasNext = next.length !== 0;
		});
	}).catch(err => {
		error = err;
	});
}

watch(() => props.noteId, fetchNote, {
	immediate: true,
});

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

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

definePageMetadata(computed(() => note ? {
	title: i18n.ts.note,
	subtitle: new Date(note.createdAt).toLocaleString(),
	avatar: note.user,
	path: `/notes/${note.id}`,
	share: {
		title: i18n.t('noteOf', { user: note.user.name }),
		text: note.text,
	},
} : null));
</script>

<style lang="scss" scoped>
.fade-enter-active,
.fade-leave-active {
	transition: opacity 0.125s ease;
}
.fade-enter-from,
.fade-leave-to {
	opacity: 0;
}

.fcuexfpr {
	background: var(--bg);

	> .note {
		> .main {
			> .load {
				min-width: 0;
				margin: 0 auto;
				border-radius: 999px;

				&.next {
					margin-bottom: var(--margin);
				}

				&.prev {
					margin-top: var(--margin);
				}
			}

			> .note {
				> .note {
					border-radius: var(--radius);
					background: var(--panel);
				}
			}

			> .clips {
				> .title {
					font-weight: bold;
					padding: 12px;
				}

				> .item {
					display: block;
					padding: 16px;

					> .description {
						padding: 8px 0;
					}

					> .user {
						$height: 32px;
						padding-top: 16px;
						border-top: solid 0.5px var(--divider);
						line-height: $height;

						> .avatar {
							width: $height;
							height: $height;
						}
					}
				}
			}
		}
	}
}
</style>
