Add a step to the flow to validate the tag version

Author: yziubrytska-wise

.github/workflows/build.yml

@@ -22,6 +22,19 @@ jobs:
         run: apt-get update && apt-get install -y git
       - name: Checkout repository
         uses: actions/checkout@v4
+      - name: "Validate version tag doesn't exist"
+        run: |
+          VERSION=$(grep '^version=' gradle.properties | cut -d'=' -f2)
+          TAG="v${VERSION}"
+          if git ls-remote --tags origin | grep -q "refs/tags/${TAG}$"; then
+            echo "============================================="
+            echo "ERROR: Tag ${TAG} already exists!"
+            echo ""
+            echo "Please bump the version in gradle.properties"
+            echo "============================================="
+            exit 1
+          fi
+          echo "✓ Version ${VERSION} is valid (tag ${TAG} does not exist yet)"
       - name: "Gradle cache"
         uses: actions/cache@v4
         with:

build.gradle

@@ -164,7 +164,7 @@ task tagRelease {
             grgit.push(refsOrSpecs: ["v$version"])
         }
         catch (RefAlreadyExistsException ignored) {
-            throw new GradleException("Tag v$version already exists. Bump the version in gradle.properties before tagging again.")
+            logger.warn("Tag v$version already exists.")
         }
     }
 }