165 lines
5 KiB
JavaScript
165 lines
5 KiB
JavaScript
function createDiagonalPattern(color = '#ffffff') {
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// create a 10x10 px canvas for the pattern's base shape
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let shape = document.createElement('canvas')
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shape.width = 10
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shape.height = 10
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// get the context for drawing
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let c = shape.getContext('2d')
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c.fillStyle = color + "60";
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c.fillRect(0, 0, shape.width, shape.height);
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// draw 1st line of the shape
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c.strokeStyle = color;
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c.lineWidth = 3;
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c.lineCap = "round";
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c.beginPath()
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c.moveTo(2, 0)
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c.lineTo(10, 8)
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c.stroke()
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// draw 2nd line of the shape
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c.beginPath()
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c.moveTo(0, 8)
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c.lineTo(2, 10)
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c.stroke()
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// create the pattern from the shape
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return c.createPattern(shape, 'repeat')
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}
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function historical_vs_current_chart(jsonData, element) {
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const style = getComputedStyle(document.body);
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const red_color = style.getPropertyValue("--pf-red");
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const green_color = style.getPropertyValue("--pf-green");
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const legend_bg = style.getPropertyValue("--pf-overlay2");
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const config = {
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type: "bar",
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data: {
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labels: jsonData.labels,
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datasets: [{
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label: "Historical",
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data: [
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jsonData.income_data[0],
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jsonData.expenses_data[0]
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],
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backgroundColor: [
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createDiagonalPattern(green_color),
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createDiagonalPattern(red_color)
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]
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},
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{
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label: "Last 30 Days",
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data: [
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jsonData.income_data[1],
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jsonData.expenses_data[1]
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],
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backgroundColor: [
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green_color,
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red_color
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]
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}]
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},
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options: {
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maintainAspectRatio: false,
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responsive: true,
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scales: {
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y: {
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beginAtZero: true
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}
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},
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plugins: {
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legend: {
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display: true,
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labels: {
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boxWidth: 20,
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position: "bottom",
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generateLabels: function(chart) {
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var labels = Chart.defaults.plugins.legend.labels.generateLabels(chart);
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for (var key in labels) {
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if (labels[key].text == "Historical") {
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labels[key].fillStyle = createDiagonalPattern(legend_bg);
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} else {
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labels[key].fillStyle = legend_bg;
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}
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labels[key].strokeStyle = "rgba(33, 44, 22, 0.7)";
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}
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return labels;
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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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new Chart(element, config);
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}
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function sparkline_summary_chart(jsonData, element) {
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const style = getComputedStyle(document.body);
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const red_color = style.getPropertyValue("--pf-red");
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const green_color = style.getPropertyValue("--pf-green");
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const legend_bg = style.getPropertyValue("--pf-overlay2");
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const config = {
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type: "line",
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data: {
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labels: jsonData.labels,
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datasets: [{
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label: "Historical",
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data: jsonData.data
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}]
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},
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options: {
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maintainAspectRatio: false,
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responsive: true,
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scales: {
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y: {
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ticks: {
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display: true,
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callback: function(value, index, values) {
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if (value === 0) {
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return value;
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} else {
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return null;
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}
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},
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},
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suggestedMin: 5
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}
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},
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plugins: {
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legend: {
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display: false
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}
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}
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},
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};
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new Chart(element, config);
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}
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function fill_charts() {
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document.querySelectorAll(".chartjs-chart").forEach(function (el) {
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var url = el.dataset.chartEndpoint;
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var type = el.dataset.chartType;
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fetch(url)
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.then(response => {
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if (!response.ok) {
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console.log(response);
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throw new Error("Fetch response was not ok!")
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}
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return response.json();
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}).then(jsonData => {
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if (type == "historical_vs_current") {
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historical_vs_current_chart(jsonData, el);
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} else if (type == "sparkline_summary") {
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sparkline_summary_chart(jsonData, el);
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}
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}).catch(error => {
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console.error("Unable to set up chart: ", error)
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});
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});
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}
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export {fill_charts}
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