Merge pull request #43 from flyway/auto-version

Create Auto-Versioning Github Action

.github/workflows/autoversion.yml

@@ -0,0 +1,50 @@
+name: Auto-Version new contributions to Flyway Community DB Support
+on:
+  pull_request:
+    branches:
+      - main
+    types:
+      - closed
+jobs:
+  auto-version:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Flyway Community DB Support
+        uses: actions/checkout@v4
+        with:
+          ref: main
+          fetch-tags: true
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: 17
+          distribution: 'temurin'
+          cache: 'maven'
+      - name: Check for new module
+        id: check_module
+        run: |
+          git fetch --tags -q
+          LATEST_TAG=$(git describe --tags `git rev-list --tags --max-count=1`)
+          if git diff --diff-filter=ADR --name-only $LATEST_TAG..HEAD -- '*pom.xml' | grep -q pom.xml; then
+            echo "NEW_MODULE=true" >> $GITHUB_OUTPUT
+          else
+            echo "NEW_MODULE=false" >> $GITHUB_OUTPUT
+          fi
+      - name: Update version
+        id: update_version
+        run: |
+          if ${{ steps.check_module.outputs.NEW_MODULE }}; then
+            NEW_VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout | awk -F'[.-]' '{print $1"."$2+1".0"}')
+          else
+            NEW_VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout | awk -F'[.-]' '{print $1"."$2"."$3+1}')
+          fi
+          mvn versions:set -DnewVersion=$NEW_VERSION
+          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_OUTPUT
+      - name: Commit and tag
+        uses: EndBug/add-and-commit@v9
+        with:
+          author_name: rg-buildmonkey
+          author_email: github-buildmonkey@red-gate.com
+          message: 'Bump Flyway Community DB Support to ${{ steps.update_version.outputs.NEW_VERSION }}'
+          tag: '${{ steps.update_version.outputs.NEW_VERSION }}'