ci: automate GitHub Pages deployment via GitHub Actions

- Added `.github/workflows/deploy.yml` to automatically build and deploy the project to the `gh-pages` branch on every push to `master`.
- Automated the transformation of `examples/charts.html` into the root `index.html` with correct asset paths.
- Restored Google Analytics tracking code (UA-53037324-1) in `examples/charts.template.html`.
- Updated `bower.json` dependencies to require AngularJS 1.8.x and Chart.js 2.x for consistency.
- Removed unused `testatic` development dependency.

Author: jtblin

.github/workflows/deploy.yml

@@ -0,0 +1,49 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build project
+        run: npm run build
+
+      - name: Update examples
+        run: npx gulp update
+
+      - name: Prepare deployment
+        run: |
+          mkdir -p deploy/examples
+          mkdir -p deploy/node_modules
+          cp -r dist deploy/
+          cp -r examples/* deploy/examples/
+          # Copy only required node_modules to keep it small
+          cp -r node_modules/angular deploy/node_modules/
+          cp -r node_modules/chart.js deploy/node_modules/
+          cp -r node_modules/angular-bootstrap deploy/node_modules/
+          cp -r node_modules/rainbow-code deploy/node_modules/
+          cp -r node_modules/font-awesome deploy/node_modules/
+          cp -r node_modules/bootstrap deploy/node_modules/
+          # Move charts.html to index.html and fix paths
+          sed 's|../node_modules/|node_modules/|g' examples/charts.html | sed 's|../angular-chart.js|dist/angular-chart.js|g' > deploy/index.html
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./deploy

examples/charts.html

@@ -697,5 +697,14 @@ <h1>Mixed type charts</h1>
   <script src="../angular-chart.js"></script>
   <script src="smoothscroll.min.js"></script>
   <script src="app.js"></script>
+  <script>
+    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+        (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+    })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+    ga('create', 'UA-53037324-1', 'auto');
+    ga('send', 'pageview');
+  </script>
 </body>
 </html>

examples/charts.template.html

@@ -697,5 +697,14 @@ <h1>Mixed type charts</h1>
   <script src="../angular-chart.js"></script>
   <script src="smoothscroll.min.js"></script>
   <script src="app.js"></script>
+  <script>
+    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+        (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+    })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+    ga('create', 'UA-53037324-1', 'auto');
+    ga('send', 'pageview');
+  </script>
 </body>
 </html>