Auto-create version tags from tauri.conf.json on main push

.gitea/workflows/build.yml

@@ -12,6 +12,48 @@ env:
   TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
 
 jobs:
+  check-version:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main' && !startsWith(github.ref, 'refs/tags/')
+    outputs:
+      should_release: ${{ steps.check.outputs.should_release }}
+      version: ${{ steps.check.outputs.version }}
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      
+      - name: Check if version tag exists
+        id: check
+        run: |
+          VERSION=$(grep -Po '"version":\s*"\K[^"]+' src-tauri/tauri.conf.json | head -1)
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          if git rev-parse "v$VERSION" >/dev/null 2>&1; then
+            echo "Tag v$VERSION already exists"
+            echo "should_release=false" >> $GITHUB_OUTPUT
+          else
+            echo "Tag v$VERSION does not exist, will create release"
+            echo "should_release=true" >> $GITHUB_OUTPUT
+          fi
+  
+  create-tag:
+    runs-on: ubuntu-latest
+    needs: check-version
+    if: needs.check-version.outputs.should_release == 'true'
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      
+      - name: Create and push tag
+        run: |
+          git config user.name "GitHub Actions"
+          git config user.email "actions@github.com"
+          git tag -a "v${{ needs.check-version.outputs.version }}" -m "Release v${{ needs.check-version.outputs.version }}"
+          git push origin "v${{ needs.check-version.outputs.version }}"
+
   build-windows:
     runs-on: windows