Javascript refactoring

assets/js/src/BurndownChart.js

@@ -0,0 +1,48 @@
+function BurndownChart() {
+}
+
+BurndownChart.prototype.execute = function() {
+    var metrics = $("#chart").data("metrics");
+    var columns = [[$("#chart").data("label-total")]];
+    var categories = [];
+    var inputFormat = d3.time.format("%Y-%m-%d");
+    var outputFormat = d3.time.format($("#chart").data("date-format"));
+
+    for (var i = 0; i < metrics.length; i++) {
+
+        for (var j = 0; j < metrics[i].length; j++) {
+
+            if (i == 0) {
+                columns.push([metrics[i][j]]);
+            }
+            else {
+                columns[j + 1].push(metrics[i][j]);
+
+                if (j > 0) {
+
+                    if (columns[0][i] == undefined) {
+                        columns[0].push(0);
+                    }
+
+                    columns[0][i] += metrics[i][j];
+                }
+
+                if (j == 0) {
+                    categories.push(outputFormat(inputFormat.parse(metrics[i][j])));
+                }
+            }
+        }
+    }
+
+    c3.generate({
+        data: {
+            columns: columns
+        },
+        axis: {
+            x: {
+                type: 'category',
+                categories: categories
+            }
+        }
+    });
+};