feat: add prepare release workflow

Author: leoweyr

.github/workflows/prepare-release.yml

@@ -0,0 +1,94 @@
+name: Prepare Release
+
+on:
+  workflow_call:
+    inputs:
+      node-verions:
+        description: 'Node.js version to use.'
+        required: false
+        type: string
+        default: '20'
+      commit-user-name:
+        description: 'Git user name for commit'
+        required: false
+        type: string
+        default: 'github-actions[bot]'
+      commit-user-email:
+        description: 'Git user email for commit.'
+        required: false
+        type: string
+        default: 'github-actions[bot]@users.noreply.github.com'
+    secrets:
+      GITHUB_TOKEN:
+        required: true
+        description: 'GitHub Token for authentication.'
+
+jobs:
+  prepare-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Checkout Config
+        uses: actions/checkout@v4
+        with:
+          repository: 'leoweyr/github-release-workflow'
+          path: .change-log-config
+          sparse-checkout: cliff.toml
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ inputs.node-verions }}
+
+      - name: Set Environment Variables
+        run: echo "TAG_NAME=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
+
+      - name: Create Release Branch
+        run: |
+          git config --global user.name "${{ inputs.commit-user-name }}"
+          git config --global user.email "${{ inputs.commit-user-email }}"
+          git checkout -b release/${{ env.TAG_NAME }}
+
+      - name: Generate Changelog Content for PR Body
+        env:
+          GITHUB_REPO: ${{ github.repository }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          npx git-cliff --config .change-log-config/cliff.toml --verbose --latest --strip all > pr_body_raw.md
+
+      - name: Save PR Body to File
+        run: |
+          cat pr_body_raw.md | tail -n +2 > pr_body_cleaned.md
+
+      - name: Update CHANGELOG.md File
+        env:
+          GITHUB_REPO: ${{ github.repository }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          if [ -f "CHANGELOG.md" ]; then
+             # File exists: Prepend new changes (git-cliff intelligently handles headers).
+             npx git-cliff --config .change-log-config/cliff.toml --verbose --latest --prepend CHANGELOG.md
+          else
+             # File missing: Create new with full history and header.
+             npx git-cliff --config .change-log-config/cliff.toml --verbose --output CHANGELOG.md
+          fi
+
+      - name: Commit and Push
+        run: |
+          git add CHANGELOG.md
+          git commit -m "release: ${{ env.TAG_NAME }}"
+          git push origin release/${{ env.TAG_NAME }}
+
+      - name: Create Pull Request
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh pr create \
+            --title "release: ${{ env.TAG_NAME }}" \
+            --body-file pr_body_cleaned.md \
+            --base master \
+            --head release/${{ env.TAG_NAME }}