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dashboard/components/dashboard/ActionableChart.vue

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+<script lang="ts" setup>
+import { onMounted } from 'vue';
+import DateService, { type Slice } from '@services/DateService';
+import type { ChartData, ChartOptions, TooltipModel } from 'chart.js';
+import { useLineChart, LineChart } from 'vue-chart-3';
+registerChartComponents();
+
+
+const chartOptions = ref<ChartOptions<'line'>>({
+    responsive: true,
+    maintainAspectRatio: false,
+    interaction: {
+        intersect: false,
+        mode: 'nearest',
+        axis: 'x',
+        includeInvisible: true
+    },
+    scales: {
+        y: {
+            ticks: { display: true },
+            grid: {
+                display: true,
+                drawBorder: false,
+                color: '#CCCCCC22',
+                // borderDash: [5, 10]
+            },
+        },
+        x: {
+            ticks: { display: true },
+            grid: {
+                display: true,
+                drawBorder: false,
+                color: '#CCCCCC22',
+            }
+        }
+    },
+    plugins: {
+        legend: { display: false },
+        title: { display: false },
+        tooltip: {
+            // enabled: true,
+            // backgroundColor: 'rgba(0, 0, 0, 0.8)',
+            // titleFont: { size: 16, weight: 'bold' },
+            // bodyFont: { size: 14 },
+            // padding: 10,
+            // cornerRadius: 4,
+            // boxPadding: 10,
+            // caretPadding: 20,
+            // yAlign: 'bottom',
+            // xAlign: 'center',
+            enabled: false,
+            position: 'nearest',
+            external: externalTooltipHandler
+        }
+    },
+});
+
+const chartData = ref<ChartData<'line' | 'bar' | 'bubble'>>({
+    labels: [],
+    datasets: [
+        {
+            label: 'Visits',
+            data: [],
+            backgroundColor: ['#5655d7'],
+            borderColor: '#5655d7',
+            borderWidth: 4,
+            fill: true,
+            tension: 0.45,
+            pointRadius: 0,
+            pointHoverRadius: 10,
+            hoverBackgroundColor: '#5655d7',
+            hoverBorderColor: 'white',
+            hoverBorderWidth: 2,
+        },
+        {
+            label: 'Unique sessions',
+            data: [],
+            backgroundColor: ['#4abde8'],
+            borderColor: '#4abde8',
+            borderWidth: 2,
+            hoverBackgroundColor: '#4abde8',
+            hoverBorderColor: '#4abde8',
+            hoverBorderWidth: 2,
+            type: 'bar'
+        },
+        {
+            label: 'Events',
+            data: [],
+            backgroundColor: ['#fbbf24'],
+            borderColor: '#fbbf24',
+            borderWidth: 2,
+            hoverBackgroundColor: '#fbbf24',
+            hoverBorderColor: '#fbbf24',
+            hoverBorderWidth: 2,
+            type: 'bubble',
+            stack: 'combined'
+        },
+    ],
+});
+
+
+const { lineChartProps, lineChartRef, update: updateChart } = useLineChart({ chartData: (chartData as any), options: chartOptions });
+
+const externalTooltipElement = ref<null | HTMLDivElement>(null);
+
+function externalTooltipHandler(context: { chart: any, tooltip: TooltipModel<'line' | 'bar'> }) {
+    const { chart, tooltip } = context;
+    const tooltipEl = externalTooltipElement.value;
+
+    currentTooltipData.value = [0,0,0,''];
+    currentTooltipData.value.push(...tooltip.dataPoints.map(e => e.raw) as number[]);
+    currentTooltipData.value[2] = ((tooltip.dataPoints[2]?.raw as any)?.r2 || 0) as number;
+    currentTooltipData.value[3] = new Date(allDatesFull.value[tooltip.dataPoints[0].dataIndex]).toLocaleDateString();
+
+    if (!tooltipEl) return;
+    if (tooltip.opacity === 0) {
+        tooltipEl.style.opacity = '0';
+        return;
+    }
+    const { offsetLeft: positionX, offsetTop: positionY } = chart.canvas;
+    tooltipEl.style.opacity = '1';
+    tooltipEl.style.left = positionX + tooltip.caretX + 'px';
+    tooltipEl.style.top = positionY + tooltip.caretY + 'px';
+    tooltipEl.style.padding = tooltip.options.padding + 'px ' + tooltip.options.padding + 'px';
+}
+
+
+const selectLabels: { label: string, value: Slice }[] = [
+    { label: 'Hour', value: 'hour' },
+    { label: 'Day', value: 'day' },
+];
+
+const selectedLabelIndex = ref<number>(1);
+
+
+const activeProject = useActiveProject();
+
+const { safeSnapshotDates } = useSnapshot()
+
+const allDatesFull = ref<string[]>([]);
+
+function transformResponse(input: { _id: string, count: number }[]) {
+    const data = input.map(e => e.count);
+    const labels = input.map(e => DateService.getChartLabelFromISO(e._id, navigator.language, selectLabels[selectedLabelIndex.value].value));
+    allDatesFull.value = input.map(e => e._id.toString());
+    return { data, labels }
+}
+
+const body = computed(() => {
+    console.log('INDEX IS', selectedLabelIndex.value, 'VALUE IS', selectLabels[selectedLabelIndex.value].value)
+    return {
+        from: safeSnapshotDates.value.from,
+        to: safeSnapshotDates.value.to,
+        slice: selectLabels[selectedLabelIndex.value].value
+    }
+});
+
+
+const visitsData = useFetch(`/api/metrics/${activeProject.value?._id}/timeline/visits`, {
+    method: 'POST', ...signHeaders({ v2: 'true' }), body, transform: transformResponse,
+    lazy: true, immediate: false
+});
+
+const eventsData = useFetch(`/api/metrics/${activeProject.value?._id}/timeline/events`, {
+    method: 'POST', ...signHeaders({ v2: 'true' }), body, transform: transformResponse,
+    lazy: true, immediate: false
+});
+
+const sessionsData = useFetch(`/api/metrics/${activeProject.value?._id}/timeline/sessions`, {
+    method: 'POST', ...signHeaders({ v2: 'true' }), body, transform: transformResponse,
+    lazy: true, immediate: false
+});
+
+
+const readyToDisplay = computed(() => {
+    return !visitsData.pending.value && !eventsData.pending.value && !sessionsData.pending.value;
+});
+
+watch(readyToDisplay, () => {
+    if (readyToDisplay.value === true) onDataReady();
+})
+
+
+function createGradient(startColor: string) {
+    const c = document.createElement('canvas');
+    const ctx = c.getContext("2d");
+    let gradient: any = `${startColor}22`;
+    if (ctx) {
+        gradient = ctx.createLinearGradient(0, 25, 0, 300);
+        gradient.addColorStop(0, `${startColor}99`);
+        gradient.addColorStop(0.35, `${startColor}66`);
+        gradient.addColorStop(1, `${startColor}22`);
+    } else {
+        console.warn('Cannot get context for gradient');
+    }
+
+    return gradient;
+}
+
+function onDataReady() {
+    console.log('DATA READY');
+
+    if (!visitsData.data.value) return;
+    if (!eventsData.data.value) return;
+    if (!sessionsData.data.value) return;
+
+    console.log('DATA READY 2');
+
+    chartData.value.labels = visitsData.data.value.labels;
+
+    const maxChartY = Math.max(...visitsData.data.value.data, ...sessionsData.data.value.data);
+    const maxEventSize = Math.max(...eventsData.data.value.data)
+
+    chartData.value.datasets[0].data = visitsData.data.value.data;
+    chartData.value.datasets[1].data = sessionsData.data.value.data;
+    chartData.value.datasets[2].data = eventsData.data.value.data.map(e => {
+        return { x: 0, y: maxChartY + 70, r: 25 / maxEventSize * e, r2: e }
+    });
+
+    chartData.value.datasets[0].backgroundColor = [createGradient('#5655d7')];
+    chartData.value.datasets[1].backgroundColor = [createGradient('#4abde8')];
+    chartData.value.datasets[2].backgroundColor = [createGradient('#fbbf24')];
+
+    console.log('UPDATE CHART');
+    updateChart();
+
+}
+
+const currentTooltipData = ref<[number, number, number, string]>([0, 0, 0, '']);
+
+function onLegendChange(dataset: any, index: number, checked: any) {
+    dataset.hidden = !checked;
+}
+
+const legendColors = [
+    '#5655d7',
+    '#4abde8',
+    '#fbbf24'
+]
+
+
+onMounted(async () => {
+    visitsData.execute();
+    eventsData.execute();
+    sessionsData.execute();
+});
+
+
+
+
+</script>
+
+<template>
+    <CardTitled title="Trend chart" sub="Easily match Visits, Unique sessions and Events trends." class="w-full">
+        <template #header>
+            <SelectButton class="w-fit" @changeIndex="selectedLabelIndex = $event" :currentIndex="selectedLabelIndex"
+                :options="selectLabels">
+            </SelectButton>
+        </template>
+
+        <div class="flex gap-6 w-full justify-end">
+            <div v-for="(dataset, index) of chartData.datasets" class="flex gap-2 items-center text-[.9rem]">
+                <UCheckbox :ui="{
+                    color: `text-[${legendColors[index]}]`
+                }" :model-value="true" @change="onLegendChange(dataset, index, $event)"></UCheckbox>
+                <label class="mt-[2px]"> {{ dataset.label }} </label>
+            </div>
+        </div>
+
+
+
+        <div id='external-tooltip' ref="externalTooltipElement" class="z-[400]">
+            <LyxUiCard>
+                <div class="flex gap-2 items-center">
+                    <div> Date: </div>
+                    <div v-if="currentTooltipData"> {{ currentTooltipData[3] }}</div>
+                </div>
+                <div v-for="(dataset, index) of chartData.datasets" class="flex gap-2 items-center">
+                    <div :style="`background-color: ${legendColors[index]}`" class="h-4 w-4 rounded-full">
+                    </div>
+                    <div> {{ dataset.label }}</div>
+                    <div v-if="currentTooltipData" class="grow text-right px-4">
+                        {{ currentTooltipData[index] }}
+                    </div>
+                </div>
+                <!-- <div class="bg-lyx-background-lighter h-[2px] w-full my-2"> </div> -->
+            </LyxUiCard>
+        </div>
+
+
+
+        <div v-if="!readyToDisplay" class="flex justify-center py-40">
+            <i class="fas fa-spinner text-[2rem] text-accent animate-[spin_1s_linear_infinite] duration-500"></i>
+        </div>
+
+        <div class="flex flex-col items-end" v-if="readyToDisplay">
+            <LineChart ref="lineChartRef" class="w-full h-full" v-bind="lineChartProps"> </LineChart>
+        </div>
+    </CardTitled>
+</template>
+
+<style lang="scss" scoped>
+#external-tooltip {
+    border-radius: 3px;
+    color: white;
+    opacity: 0;
+    pointer-events: none;
+    position: absolute;
+    transform: translate(-50%, 0);
+    transition: all .1s ease;
+}
+</style>