1 files changed, 61 insertions, 0 deletions
diff --git a/app/assets/javascripts/pages/projects/graphs/charts/index.js b/app/assets/javascripts/pages/projects/graphs/charts/index.js
new file mode 100644
index 00000000000..42df19c2968
--- /dev/null
+++ b/app/assets/javascripts/pages/projects/graphs/charts/index.js
@@ -0,0 +1,61 @@
+import Chart from 'chart.js';
+import _ from 'underscore';
+
+document.addEventListener('DOMContentLoaded', () => {
+  const projectChartData = JSON.parse(document.getElementById('projectChartData').innerHTML);
+
+  const responsiveChart = (selector, data) => {
+    const options = {
+      scaleOverlay: true,
+      responsive: true,
+      pointHitDetectionRadius: 2,
+      maintainAspectRatio: false,
+    };
+    // get selector by context
+    const ctx = selector.get(0).getContext('2d');
+    // pointing parent container to make chart.js inherit its width
+    const container = $(selector).parent();
+    const generateChart = () => {
+      selector.attr('width', $(container).width());
+      if (window.innerWidth < 768) {
+        // Scale fonts if window width lower than 768px (iPad portrait)
+        options.scaleFontSize = 8;
+      }
+      return new Chart(ctx).Bar(data, options);
+    };
+    // enabling auto-resizing
+    $(window).resize(generateChart);
+    return generateChart();
+  };
+
+  const chartData = data => ({
+    labels: Object.keys(data),
+    datasets: [{
+      fillColor: 'rgba(220,220,220,0.5)',
+      strokeColor: 'rgba(220,220,220,1)',
+      barStrokeWidth: 1,
+      barValueSpacing: 1,
+      barDatasetSpacing: 1,
+      data: _.values(data),
+    }],
+  });
+
+  const hourData = chartData(projectChartData.hour);
+  responsiveChart($('#hour-chart'), hourData);
+
+  const dayData = chartData(projectChartData.weekDays);
+  responsiveChart($('#weekday-chart'), dayData);
+
+  const monthData = chartData(projectChartData.month);
+  responsiveChart($('#month-chart'), monthData);
+
+  const data = projectChartData.languages;
+  const ctx = $('#languages-chart').get(0).getContext('2d');
+  const options = {
+    scaleOverlay: true,
+    responsive: true,
+    maintainAspectRatio: false,
+  };
+
+  new Chart(ctx).Pie(data, options);
+});