Update release tag name and check if exist before release

Author: wusyong

.github/workflows/rust.yml

@@ -190,7 +190,7 @@ jobs:
           git diff --staged --no-ext-diff --quiet --exit-code
 
   publish-release:
-    name: Publish release
+    name: Check version and publish release
     runs-on: ubuntu-latest
     needs:
       ["linux", "mac", "windows"]
@@ -200,14 +200,19 @@ jobs:
       - uses: actions/download-artifact@v4
         with:
           merge-multiple: true
-      - id: release
+      - id: check-tag
         if: ${{ github.ref == 'refs/heads/main' && github.event_name == 'push' }}
         run: |
-          RELEASE_TAG=$(date "+%F-%H-%M")
-          gh release create ${RELEASE_TAG} ./*.tar.gz
+          RELEASE_TAG=mozjs-sys-v$(cargo metadata --format-version=1 --no-deps | jq -r '.packages[] | select(.name == "mozjs_sys") | .version')
+          if git show-ref --tags --verify --quiet "refs/tags/${RELEASE_TAG}"; then
+            RELEASE_TAG=''
+          fi 
           echo "RELEASE_TAG=${RELEASE_TAG}" >> ${GITHUB_OUTPUT}
+      - name: Publish release
+        if: ${{ steps.check-tag.outputs.RELEASE_TAG != '' }}
+        run: gh release create ${{ steps.check-tag.outputs.RELEASE_TAG }} ./*.tar.gz
     outputs:
-      release-tag: ${{ steps.release.outputs.RELEASE_TAG }}
+      release-tag: ${{ steps.check-tag.outputs.RELEASE_TAG }}
 
   verify-release:
     name: Verify release