From 8b73f215eba87eeb2080c6586378e3ad3fa90af2 Mon Sep 17 00:00:00 2001
From: syuilo <Syuilotan@yahoo.co.jp>
Date: Wed, 28 Dec 2022 14:13:47 +0900
Subject: retention chart

---
 .../frontend/src/components/MkRetentionHeatmap.vue | 218 +++++++++++++++++++++
 1 file changed, 218 insertions(+)
 create mode 100644 packages/frontend/src/components/MkRetentionHeatmap.vue

(limited to 'packages/frontend/src/components/MkRetentionHeatmap.vue')

diff --git a/packages/frontend/src/components/MkRetentionHeatmap.vue b/packages/frontend/src/components/MkRetentionHeatmap.vue
new file mode 100644
index 0000000000..cdfbd0d9a2
--- /dev/null
+++ b/packages/frontend/src/components/MkRetentionHeatmap.vue
@@ -0,0 +1,218 @@
+<template>
+<div ref="rootEl">
+	<MkLoading v-if="fetching"/>
+	<div v-else>
+		<canvas ref="chartEl"></canvas>
+	</div>
+</div>
+</template>
+
+<script lang="ts" setup>
+import { markRaw, version as vueVersion, onMounted, onBeforeUnmount, nextTick } from 'vue';
+import {
+	Chart,
+	ArcElement,
+	LineElement,
+	BarElement,
+	PointElement,
+	BarController,
+	LineController,
+	CategoryScale,
+	LinearScale,
+	TimeScale,
+	Legend,
+	Title,
+	Tooltip,
+	SubTitle,
+	Filler,
+} from 'chart.js';
+import { enUS } from 'date-fns/locale';
+import tinycolor from 'tinycolor2';
+import * as os from '@/os';
+import 'chartjs-adapter-date-fns';
+import { defaultStore } from '@/store';
+import { useChartTooltip } from '@/scripts/use-chart-tooltip';
+import { MatrixController, MatrixElement } from 'chartjs-chart-matrix';
+import { chartVLine } from '@/scripts/chart-vline';
+import { alpha } from '@/scripts/color';
+
+Chart.register(
+	ArcElement,
+	LineElement,
+	BarElement,
+	PointElement,
+	BarController,
+	LineController,
+	CategoryScale,
+	LinearScale,
+	TimeScale,
+	Legend,
+	Title,
+	Tooltip,
+	SubTitle,
+	Filler,
+	MatrixController, MatrixElement,
+);
+
+const rootEl = $ref<HTMLDivElement>(null);
+const chartEl = $ref<HTMLCanvasElement>(null);
+const now = new Date();
+let chartInstance: Chart = null;
+let fetching = $ref(true);
+
+const { handler: externalTooltipHandler } = useChartTooltip({
+	position: 'middle',
+});
+
+async function renderChart() {
+	if (chartInstance) {
+		chartInstance.destroy();
+	}
+
+	const wide = rootEl.offsetWidth > 600;
+	const narrow = rootEl.offsetWidth < 400;
+
+	const maxDays = wide ? 20 : narrow ? 10 : 15;
+
+	const raw = await os.api('retention', { });
+
+	const data = [];
+	for (const record of raw) {
+		let i = 0;
+		for (const date of Object.keys(record.data).sort((a, b) => new Date(a).getTime() - new Date(b).getTime())) {
+			data.push({
+				x: i,
+				y: record.createdAt,
+				v: record.data[date],
+			});
+			i++;
+		}
+	}
+
+	console.log(data);
+
+	fetching = false;
+
+	await nextTick();
+
+	const gridColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
+
+	// フォントカラー
+	Chart.defaults.color = getComputedStyle(document.documentElement).getPropertyValue('--fg');
+
+	const color = defaultStore.state.darkMode ? '#b4e900' : '#86b300';
+
+	// 視覚上の分かりやすさのため上から最も大きい3つの値の平均を最大値とする
+	//const max = raw.readWrite.slice().sort((a, b) => b - a).slice(0, 3).reduce((a, b) => a + b, 0) / 3;
+	const max = 4;
+
+	const marginEachCell = 6;
+
+	chartInstance = new Chart(chartEl, {
+		type: 'matrix',
+		data: {
+			datasets: [{
+				label: 'Active',
+				data: data,
+				pointRadius: 0,
+				borderWidth: 0,
+				borderJoinStyle: 'round',
+				borderRadius: 3,
+				backgroundColor(c) {
+					const value = c.dataset.data[c.dataIndex].v;
+					const a = value / max;
+					return alpha(color, a);
+				},
+				fill: true,
+				width(c) {
+					const a = c.chart.chartArea ?? {};
+					return (a.right - a.left) / maxDays - marginEachCell;
+				},
+				height(c) {
+					const a = c.chart.chartArea ?? {};
+					return (a.bottom - a.top) / maxDays - (marginEachCell / 1.5);
+				},
+			}],
+		},
+		options: {
+			aspectRatio: wide ? 2 : narrow ? 2 : 2,
+			layout: {
+				padding: {
+					left: 8,
+					right: 0,
+					top: 0,
+					bottom: 0,
+				},
+			},
+			scales: {
+				x: {
+					position: 'top',
+					suggestedMax: maxDays,
+					grid: {
+						display: false,
+						color: gridColor,
+						borderColor: 'rgb(0, 0, 0, 0)',
+					},
+					ticks: {
+						display: true,
+						maxRotation: 0,
+						autoSkipPadding: 8,
+					},
+				},
+				y: {
+					type: 'time',
+					min: new Date(new Date().getFullYear(), new Date().getMonth(), new Date().getDate() - maxDays),
+					offset: true,
+					reverse: true,
+					position: 'left',
+					time: {
+						unit: 'day',
+						round: 'day',
+					},
+					grid: {
+						display: false,
+						color: gridColor,
+						borderColor: 'rgb(0, 0, 0, 0)',
+					},
+					ticks: {
+						maxRotation: 0,
+						autoSkip: true,
+						padding: 1,
+						font: {
+							size: 9,
+						},
+					},
+				},
+			},
+			animation: false,
+			plugins: {
+				legend: {
+					display: false,
+				},
+				tooltip: {
+					enabled: false,
+					callbacks: {
+						title(context) {
+							const v = context[0].dataset.data[context[0].dataIndex];
+							return v.d;
+						},
+						label(context) {
+							const v = context.dataset.data[context.dataIndex];
+							return ['Active: ' + v.v];
+						},
+					},
+					//mode: 'index',
+					animation: {
+						duration: 0,
+					},
+					external: externalTooltipHandler,
+				},
+			},
+		},
+	});
+}
+
+onMounted(async () => {
+	renderChart();
+});
+</script>
-- 
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