fix: [domains] add missing JS file

var/www/static/js/d3/pie_chart.js

@@ -0,0 +1,68 @@
+//Requirement:	- D3v5
+//							- jquery
+// data input: var data = [{"name":"down","value":0},{"name":"up","value":3}]
+
+const pie_chart = (container_id, data, options) => {
+
+	const defaults = {
+        style: {
+            strokeWidth: 2,
+        },
+		opacity: .8,
+		padding: 10,
+		width: 200,
+		height: 200
+	};
+
+	options = $.extend(true, defaults, options);
+
+	let radius = Math.min(options.width - options.padding, options.height - options.padding) / 2;
+	let color = d3.scaleOrdinal(d3.schemeSet3);
+
+	const tooltip = d3.select("#"+container_id).append("div")
+			.style("opacity", 0)
+			.style("padding", "2px");
+
+	const mouseover = function(d) {
+		tooltip.style("opacity", 1)
+		tooltip.html("<h4>"+d.data.name + ": </h4>" + d.data.value)
+            .style("left", (d3.event.pageX) + "px")
+            .style("top", (d3.event.pageY - 28) + "px");
+    }
+    const mouseleave = function(d) {
+        tooltip.style("opacity", 0)
+    }
+
+	let svg = d3.select("#"+container_id).append('svg')
+				.attr("width", options.width)
+				.attr("height", options.height)
+				.attr('viewBox','0 0 '+Math.min(options.width, options.height) +' '+Math.min(options.width, options.height) )
+				.attr('preserveAspectRatio','xMinYMin')
+
+	let g_pie = svg.append('g')
+				.attr('transform', 'translate(' + (options.width/2) + ',' + (options.height/2) + ')');
+
+	let arc_pie = d3.arc()
+				.innerRadius(0)
+				.outerRadius(radius);
+
+
+	let pie_pie = d3.pie()
+					.value(function(d) { return d.value; })
+					.sort(null);
+
+	g_pie.selectAll('path')
+		.data(pie_pie(data))
+		.enter()
+		.append("g")
+		.append('path')
+		.attr('d', arc_pie)
+		.attr('fill', (d,i) => color(i))
+		.on("mouseover", mouseover)
+		.on("mouseleave", mouseleave)
+		.style('opacity', options.opacity)
+		.style('stroke', 'white');
+
+	return svg
+
+}