Automatically generate helm/changelog PR

Author: code-asher

.github/workflows/publish.yaml

@@ -70,18 +70,18 @@ jobs:
           token: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}
           ref: "master"
 
+      - name: Configure git
+        run: |
+          git config --global user.name cdrci
+          git config --global user.email opensource@coder.com
+
       - name: Fetch and reset master
         run: |
           git remote add upstream https://github.com/coder/code-server-aur.git
           git fetch upstream
           git reset --hard upstream/master
           git push --force
 
-      - name: Configure git
-        run: |
-          git config --global user.name cdrci
-          git config --global user.email opensource@coder.com
-
       - name: Validate package
         uses: heyhusen/archlinux-package-action@c9f94059ccbebe8710d31d582f33ef4e84fe575c # v3.0.0
         with:
@@ -136,3 +136,47 @@ jobs:
           out-file-path: "release-packages"
 
       - run: npm run publish:docker
+
+  repo:
+    runs-on: ubuntu-latest
+    env:
+      GH_TOKEN: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}
+      TAG: ${{ inputs.version || github.ref_name }}
+    needs: docker
+
+    steps:
+      - name: Set version to tag without leading v
+        run: |
+          echo "VERSION=${TAG#v}" >> $GITHUB_ENV
+
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - name: Update Helm chart
+        run: |
+          current=$(yq .version ci/helm-chart/Chart.yaml)
+          next=$(semver "$current" -i minor)
+          echo "Bumping version from $current to $next..."
+          sed -i.bak "s/^version: $current\$/version: $next/" ci/helm-chart/Chart.yaml
+
+          echo "Setting app version and image to $VERSION..."
+          sed -i.bak "s/^appVersion: .\+\$/appVersion: $VERSION/" ci/helm-chart/Chart.yaml
+          sed -i.bak "s/^  tag: .\+\$/  tag: '$VERSION'/" ci/helm-chart/values.yaml
+
+      - name: Update changelog
+        run: |
+          date=$(printf '%(%Y-%m-%d)T\n' -1)
+          link="https://github.com/coder/code-server/releases/tag/v$VERSION"
+          sed -i.bak "s|## Unreleased|## Unreleased\n\n## [$VERSION]($link) - $date|" CHANGELOG.md
+
+      - name: Open PR
+        run: |
+          git config --global user.name cdrci
+          git config --global user.email opensource@coder.com
+          git checkout -b "helm/$VERSION"
+          git add .
+          git commit -m "Update to $VERSION"
+          git push -u origin "$(git branch --show)"
+          gh pr create \
+            --repo coder/code-server \
+            --body "- [X] Update Helm chart\n- [ ] https://github.com/coder/code-server-aur/pulls" \
+            --title "Update to $VERSION"