<template>
<div class="zbcjwnqg">
	<div class="main">
		<div class="body">
			<div class="selects" style="display: flex;">
				<MkSelect v-model="chartSrc" style="margin: 0; flex: 1;">
					<optgroup :label="i18n.ts.federation">
						<option value="federation">{{ i18n.ts._charts.federation }}</option>
						<option value="ap-request">{{ i18n.ts._charts.apRequest }}</option>
					</optgroup>
					<optgroup :label="i18n.ts.users">
						<option value="users">{{ i18n.ts._charts.usersIncDec }}</option>
						<option value="users-total">{{ i18n.ts._charts.usersTotal }}</option>
						<option value="active-users">{{ i18n.ts._charts.activeUsers }}</option>
					</optgroup>
					<optgroup :label="i18n.ts.notes">
						<option value="notes">{{ i18n.ts._charts.notesIncDec }}</option>
						<option value="local-notes">{{ i18n.ts._charts.localNotesIncDec }}</option>
						<option value="remote-notes">{{ i18n.ts._charts.remoteNotesIncDec }}</option>
						<option value="notes-total">{{ i18n.ts._charts.notesTotal }}</option>
					</optgroup>
					<optgroup :label="i18n.ts.drive">
						<option value="drive-files">{{ i18n.ts._charts.filesIncDec }}</option>
						<option value="drive">{{ i18n.ts._charts.storageUsageIncDec }}</option>
					</optgroup>
				</MkSelect>
				<MkSelect v-model="chartSpan" style="margin: 0 0 0 10px;">
					<option value="hour">{{ i18n.ts.perHour }}</option>
					<option value="day">{{ i18n.ts.perDay }}</option>
				</MkSelect>
			</div>
			<div class="chart">
				<MkChart :src="chartSrc" :span="chartSpan" :limit="chartLimit" :detailed="detailed"></MkChart>
			</div>
		</div>
	</div>
	<div class="subpub">
		<div class="sub">
			<div class="title">Sub</div>
			<canvas ref="subDoughnutEl"></canvas>
		</div>
		<div class="pub">
			<div class="title">Pub</div>
			<canvas ref="pubDoughnutEl"></canvas>
		</div>
	</div>
</div>
</template>

<script lang="ts" setup>
import { onMounted } from 'vue';
import {
	Chart,
	ArcElement,
	LineElement,
	BarElement,
	PointElement,
	BarController,
	LineController,
	CategoryScale,
	LinearScale,
	TimeScale,
	Legend,
	Title,
	Tooltip,
	SubTitle,
	Filler,
	DoughnutController,
} from 'chart.js';
import MkSelect from '@/components/form/select.vue';
import MkChart from '@/components/chart.vue';
import { useChartTooltip } from '@/scripts/use-chart-tooltip';
import * as os from '@/os';
import { i18n } from '@/i18n';

Chart.register(
	ArcElement,
	LineElement,
	BarElement,
	PointElement,
	BarController,
	LineController,
	DoughnutController,
	CategoryScale,
	LinearScale,
	TimeScale,
	Legend,
	Title,
	Tooltip,
	SubTitle,
	Filler,
);

const props = withDefaults(defineProps<{
	chartLimit?: number;
	detailed?: boolean;
}>(), {
	chartLimit: 90,
});

const chartSpan = $ref<'hour' | 'day'>('hour');
const chartSrc = $ref('active-users');
let subDoughnutEl = $ref<HTMLCanvasElement>();
let pubDoughnutEl = $ref<HTMLCanvasElement>();

const { handler: externalTooltipHandler1 } = useChartTooltip();
const { handler: externalTooltipHandler2 } = useChartTooltip();

function createDoughnut(chartEl, tooltip, data) {
	const chartInstance = new Chart(chartEl, {
		type: 'doughnut',
		data: {
			labels: data.map(x => x.name),
			datasets: [{
				backgroundColor: data.map(x => x.color),
				borderColor: getComputedStyle(document.documentElement).getPropertyValue('--panel'),
				borderWidth: 2,
				hoverOffset: 0,
				data: data.map(x => x.value),
			}],
		},
		options: {
			maintainAspectRatio: false,
			layout: {
				padding: {
					left: 16,
					right: 16,
					top: 16,
					bottom: 16,
				},
			},
			onClick: (ev) => {
				const hit = chartInstance.getElementsAtEventForMode(ev, 'nearest', { intersect: true }, false)[0];
				if (hit && data[hit.index].onClick) {
					data[hit.index].onClick();
				}
			},
			plugins: {
				legend: {
					display: false,
				},
				tooltip: {
					enabled: false,
					mode: 'index',
					animation: {
						duration: 0,
					},
					external: tooltip,
				},
			},
		},
	});

	return chartInstance;
}

onMounted(() => {
	os.apiGet('federation/stats', { limit: 30 }).then(fedStats => {
		createDoughnut(subDoughnutEl, externalTooltipHandler1, fedStats.topSubInstances.map(x => ({
			name: x.host,
			color: x.themeColor,
			value: x.followersCount,
			onClick: () => {
				os.pageWindow(`/instance-info/${x.host}`);
			},
		})).concat([{ name: '(other)', color: '#80808080', value: fedStats.otherFollowersCount }]));

		createDoughnut(pubDoughnutEl, externalTooltipHandler2, fedStats.topPubInstances.map(x => ({
			name: x.host,
			color: x.themeColor,
			value: x.followingCount,
			onClick: () => {
				os.pageWindow(`/instance-info/${x.host}`);
			},
		})).concat([{ name: '(other)', color: '#80808080', value: fedStats.otherFollowingCount }]));
	});
});
</script>

<style lang="scss" scoped>
.zbcjwnqg {
	> .main {
		background: var(--panel);
		border-radius: var(--radius);
		padding: 24px;
		margin-bottom: 16px;

		> .body {
			> .chart {
				padding: 8px 0 0 0;
			}
		}
	}

	> .subpub {
		display: flex;
		gap: 16px;

		> .sub, > .pub {
			flex: 1;
			min-width: 0;
			position: relative;
			background: var(--panel);
			border-radius: var(--radius);
			padding: 24px;
			max-height: 300px;

			> .title {
				position: absolute;
				top: 24px;
				left: 24px;
			}
		}

		@media (max-width: 600px) {
			flex-direction: column;
		}
	}
}
</style>
