Updated bump_version.yml action

.github/workflows/bump_version.yml

@@ -1,15 +1,58 @@
-name: Bump version
+name: Version Management
 
 on:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
   push:
     branches:
       - main
 
 jobs:
+  preview-bump:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    name: "Preview version bump"
+    steps:
+      - name: Check out
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install commitizen
+        run: pip install commitizen
+
+      - name: Preview version bump
+        id: preview
+        run: |
+          if git log -1 --pretty=%B | grep -qE '^(feat|fix|BREAKING CHANGE):|#(minor|major)'; then
+            NEW_VERSION=$(cz bump --dry-run)
+          else
+            NEW_VERSION=$(cz bump --increment PATCH --dry-run)
+          fi
+          echo "New version would be: $NEW_VERSION"
+          echo "::set-output name=new_version::$NEW_VERSION"
+
+      - name: Comment PR
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.name,
+              body: 'When merged, this PR will bump the version to: ${{ steps.preview.outputs.new_version }}'
+            })
+
   bump-version:
-    if: "!startsWith(github.event.head_commit.message, 'bump:')"
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
-    name: "Bump version and create changelog with commitizen"
+    name: "Bump version and create changelog"
     steps:
       - name: Check out
         uses: actions/checkout@v2