158 lines
3.9 KiB
JavaScript
158 lines
3.9 KiB
JavaScript
import { ajax } from 'discourse/lib/ajax';
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import computed from 'ember-addons/ember-computed-decorators';
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import loadScript from 'discourse/lib/load-script';
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export default Ember.Component.extend({
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classNames: ["dashboard-mini-chart"],
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classNameBindings: ["trend", "oneDataPoint", "isLoading"],
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isLoading: false,
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total: null,
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trend: null,
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title: null,
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chartData: null,
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oneDataPoint: false,
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backgroundColor: "rgba(200,220,240,0.3)",
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borderColor: "#08C",
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didInsertElement() {
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this._super();
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loadScript("/javascripts/Chart.min.js").then(() => {
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this.fetchReport();
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});
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},
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didUpdateAttrs() {
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this._super();
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this.fetchReport();
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},
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@computed("dataSourceName")
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dataSource(dataSourceName) {
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return `/admin/reports/${dataSourceName}`;
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},
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@computed("trend")
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trendIcon(trend) {
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if (trend === "stable") {
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return null;
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} else {
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return `angle-${trend}`;
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}
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},
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fetchReport() {
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if (this.get("isLoading")) return;
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this.set("isLoading", true);
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let payload = {data: {}};
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if (this.get("startDate")) {
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payload.data.start_date = this.get("startDate").toISOString();
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}
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if (this.get("endDate")) {
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payload.data.end_date = this.get("endDate").toISOString();
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}
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ajax(this.get("dataSource"), payload)
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.then((response) => {
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const report = response.report;
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this.setProperties({
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oneDataPoint: (this.get("startDate") && this.get("endDate")) &&
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this.get("startDate").isSame(this.get("endDate"), 'day'),
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total: report.total,
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title: report.title,
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trend: this._computeTrend(report.total, report.prev30Days),
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chartData: report.data
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});
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})
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.finally(() => {
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this.set("isLoading", false);
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Ember.run.schedule("afterRender", () => {
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if (!this.get("oneDataPoint")) {
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this.drawChart();
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}
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});
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});
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},
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drawChart() {
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const context = this.$(".chart-canvas")[0].getContext("2d");
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const data = {
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labels: this.get("chartData").map(r => r.x),
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datasets: [{
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data: this.get("chartData").map(r => r.y),
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backgroundColor: this.get("backgroundColor"),
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borderColor: this.get("borderColor")
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}]
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};
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this._chart = new window.Chart(context, this._buildChartConfig(data));
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},
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_buildChartConfig(data) {
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const values = this.get("chartData").map(d => d.y);
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const max = Math.max(...values);
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const min = Math.min(...values);
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const stepSize = Math.max(...[Math.ceil((max - min)/5), 20]);
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const startDate = this.get("startDate") || moment();
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const endDate = this.get("endDate") || moment();
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const datesDifference = startDate.diff(endDate, "days");
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let unit = "day";
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if (datesDifference >= 366) {
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unit = "quarter";
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} else if (datesDifference >= 61) {
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unit = "month";
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} else if (datesDifference >= 14) {
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unit = "week";
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}
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return {
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type: "line",
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data,
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options: {
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legend: { display: false },
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responsive: true,
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layout: { padding: { left: 0, top: 0, right: 0, bottom: 0 } },
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scales: {
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yAxes: [
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{
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display: true,
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ticks: { suggestedMin: 0, stepSize, suggestedMax: max + stepSize }
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}
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],
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xAxes: [
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{
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display: true,
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type: "time",
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time: {
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parser: "YYYY-MM-DD",
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unit
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}
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}
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],
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}
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},
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};
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},
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_computeTrend(total, prevTotal) {
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const percentChange = ((total - prevTotal) / prevTotal) * 100;
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if (percentChange > 50) return "double-up";
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if (percentChange > 0) return "up";
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if (percentChange === 0) return "stable";
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if (percentChange < 50) return "double-down";
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if (percentChange < 0) return "down";
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},
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});
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