feat(workflows): enhance Dependabot PR review process 2

Author: Raouf25

.github/workflows/dependabot-reviewer.yml

@@ -7,38 +7,49 @@ permissions:
   contents: write
 
 jobs:
-
   review-dependabot-pr:
     runs-on: ubuntu-latest
     if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
+    env:
+      PR_URL: ${{ github.event.pull_request.html_url }}
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
     steps:
+      - name: Check out repository
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Dependabot metadata
         id: dependabot-metadata
         uses: dependabot/fetch-metadata@v2.1.0
+
+      - name: Fetch all branches
+        run: git fetch --all
+
+      - name: Attempt fast-forward merge
+        run: |
+          BASE_BRANCH="${{ github.event.pull_request.base.ref }}"
+          HEAD_BRANCH="${{ github.event.pull_request.head.ref }}"
+          git checkout $BASE_BRANCH
+          git merge --ff-only $HEAD_BRANCH || exit 0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Enable auto-merge for Dependabot PRs
+        if: ${{ github.event.pull_request.merged == false }}
         run: gh pr merge --auto --merge "$PR_URL"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
       - name: Approve patch and minor updates
-        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' || steps.dependabot-metadata.outputs.update-type == 'version-update:semver-minor'}}
-        run: |
-          git rebase origin/${{github.base_ref}}
-          gh pr review $PR_URL --approve -b "I'm **approving** this pull request because **it includes a patch or minor update**"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+        if: ${{ steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' || steps.dependabot-metadata.outputs.update-type == 'version-update:semver-minor' }}
+        run: gh pr review $PR_URL --approve -b "I'm **approving** this pull request because it includes a ${{ steps.dependabot-metadata.outputs.update-type }} update"
+
       - name: Approve major updates of development dependencies
-        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:development'}}
+        if: ${{ steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:development' }}
         run: gh pr review $PR_URL --approve -b "I'm **approving** this pull request because **it includes a major update of a dependency used only in development**"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
       - name: Comment on major updates of non-development dependencies
-        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:production'}}
+        if: ${{ steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:production' }}
         run: |
           gh pr comment $PR_URL --body "I'm **not approving** this PR because **it includes a major update of a dependency used in production**"
           gh pr edit $PR_URL --add-label "requires-manual-qa"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}