feat(client): add instances doughnuts charts for dashboard

packages/client/src/pages/admin/overview.pie.vue

+<template>
+<canvas ref="chartEl"></canvas>
+</template>
+
+<script lang="ts" setup>
+import { onMounted, onUnmounted, ref } from 'vue';
+import {
+	Chart,
+	ArcElement,
+	LineElement,
+	BarElement,
+	PointElement,
+	BarController,
+	LineController,
+	CategoryScale,
+	LinearScale,
+	TimeScale,
+	Legend,
+	Title,
+	Tooltip,
+	SubTitle,
+	Filler,
+	DoughnutController,
+} from 'chart.js';
+import number from '@/filters/number';
+import { defaultStore } from '@/store';
+import { useChartTooltip } from '@/scripts/use-chart-tooltip';
+
+Chart.register(
+	ArcElement,
+	LineElement,
+	BarElement,
+	PointElement,
+	BarController,
+	LineController,
+	DoughnutController,
+	CategoryScale,
+	LinearScale,
+	TimeScale,
+	Legend,
+	Title,
+	Tooltip,
+	SubTitle,
+	Filler,
+);
+
+const props = defineProps<{
+	data: { name: string; value: number; color: string; }[];
+}>();
+
+const chartEl = ref<HTMLCanvasElement>(null);
+
+// フォントカラー
+Chart.defaults.color = getComputedStyle(document.documentElement).getPropertyValue('--fg');
+
+const { handler: externalTooltipHandler } = useChartTooltip();
+
+let chartInstance: Chart;
+
+onMounted(() => {
+	chartInstance = new Chart(chartEl.value, {
+		type: 'doughnut',
+		data: {
+			labels: props.data.map(x => x.name),
+			datasets: [{
+				backgroundColor: props.data.map(x => x.color),
+				data: props.data.map(x => x.value),
+			}],
+		},
+		options: {
+			layout: {
+				padding: {
+					left: 8,
+					right: 8,
+					top: 8,
+					bottom: 8,
+				},
+			},
+			interaction: {
+				intersect: false,
+			},
+			plugins: {
+				legend: {
+					display: false,
+				},
+				tooltip: {
+					enabled: false,
+					mode: 'index',
+					animation: {
+						duration: 0,
+					},
+					external: externalTooltipHandler,
+				},
+			},
+		},
+	});
+});
+</script>
+
+<style lang="scss" scoped>
+
+</style>

packages/client/src/pages/admin/overview.vue

@@ -43,7 +43,12 @@
 				</div>
 			</div>
 
-			<!--<XMetrics/>-->
+			<div class="container files">
+				<div class="title">Recent files</div>
+				<div class="body">
+					<MkFileListForAdmin :pagination="filesPagination" view-mode="grid"/>
+				</div>
+			</div>
 
 			<div class="container env">
 				<div class="title">Enviroment</div>
@@ -103,10 +108,18 @@
 					</div>
 				</div>
 			</div>
-			<div class="container files">
-				<div class="title">Recent files</div>
+			<div v-if="fedStats" class="container federationPies">
 				<div class="body">
-					<MkFileListForAdmin :pagination="filesPagination" view-mode="grid"/>
+					<div class="chart deliver">
+						<div class="title">Sub</div>
+						<XPie :data="fedStats.topSubInstances.map(x => ({ name: x.host, value: x.followersCount }))"/>
+						<div class="subTitle">Top 10</div>
+					</div>
+					<div class="chart inbox">
+						<div class="title">Pub</div>
+						<XPie :data="fedStats.topPubInstances.map(x => ({ name: x.host, value: x.followingCount }))"/>
+						<div class="subTitle">Top 10</div>
+					</div>
 				</div>
 			</div>
 		</div>
@@ -140,6 +153,7 @@ import XMetrics from './metrics.vue';
 import XFederation from './overview.federation.vue';
 import XQueueChart from './overview.queue-chart.vue';
 import XUser from './overview.user.vue';
+import XPie from './overview.pie.vue';
 import MkInstanceStats from '@/components/instance-stats.vue';
 import MkNumberDiff from '@/components/number-diff.vue';
 import { version, url } from '@/config';
@@ -175,6 +189,7 @@ const rootEl = $ref<HTMLElement>();
 const chartEl = $ref<HTMLCanvasElement>(null);
 let stats: any = $ref(null);
 let serverInfo: any = $ref(null);
+let fedStats: any = $ref(null);
 let usersComparedToThePrevDay: any = $ref(null);
 let notesComparedToThePrevDay: any = $ref(null);
 let federationPubActive = $ref<number | null>(null);
@@ -257,7 +272,7 @@ async function renderChart() {
 			layout: {
 				padding: {
 					left: 0,
-					right: 8,
+					right: 0,
 					top: 0,
 					bottom: 0,
 				},
@@ -380,6 +395,10 @@ onMounted(async () => {
 		federationSubActiveDiff = chart.subActive[0] - chart.subActive[1];
 	});
 
+	os.apiGet('federation/stats').then(res => {
+		fedStats = res;
+	});
+
 	os.api('admin/server-info').then(serverInfoResponse => {
 		serverInfo = serverInfoResponse;
 	});
@@ -529,6 +548,35 @@ definePageMetadata({
 					}
 				}
 			}
+
+			&.federationPies {
+				> .body {
+					display: grid;
+					grid-gap: 16px;
+					grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+
+					> .chart {
+						position: relative;
+						padding: 20px;
+						background: var(--panel);
+						border-radius: var(--radius);
+
+						> .title {
+							position: absolute;
+							top: 20px;
+							left: 20px;
+							font-size: 90%;
+						}
+
+						> .subTitle {
+							position: absolute;
+							bottom: 20px;
+							right: 20px;
+							font-size: 85%;
+						}
+					}
+				}
+			}
 		}
 	}