release versioning (#7)

.github/workflows/artifacts.yaml

@@ -17,6 +17,8 @@ jobs:
     steps:
     - name: Checkout code
       uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Need full history to compare with previous release
 
     - name: Install Protocol Buffers
       run: |
@@ -47,6 +49,28 @@ jobs:
       run: |
         npm install
 
+    - name: Get current version
+      id: current_version
+      run: |
+        CURRENT_VERSION=$(node -p "require('./package.json').version")
+        echo "CURRENT_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
+
+    - name: Download previous artifacts
+      if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+      run: |
+        # Get the latest release tag
+        LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "none")
+        if [ "$LATEST_TAG" != "none" ]; then
+          mkdir -p previous_artifacts
+          # Download and extract previous artifacts
+          curl -L $(gh release download $LATEST_TAG -p "*.zip" --json assets -q ".[0].url") -o previous.zip || true
+          if [ -f previous.zip ]; then
+            unzip -q previous.zip -d previous_artifacts
+          fi
+        fi
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
     - name: Compile Circom circuits
       run: |
         mkdir -p artifacts
@@ -66,6 +90,54 @@ jobs:
           fi
         done
 
+    - name: Check for R1CS changes and update version
+      if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+      id: version_check
+      run: |
+        NEEDS_BUMP=false
+        
+        # Compare R1CS files if previous artifacts exist
+        if [ -d "previous_artifacts" ]; then
+          for r1cs in artifacts/*/*.r1cs; do
+            filename=$(basename $r1cs)
+            dirname=$(dirname $r1cs)
+            basedir=$(basename $dirname)
+            if [ -f "previous_artifacts/$basedir/$filename" ]; then
+              if ! cmp -s "$r1cs" "previous_artifacts/$basedir/$filename"; then
+                echo "R1CS change detected in $filename"
+                NEEDS_BUMP=true
+                break
+              fi
+            else
+              echo "New R1CS file detected: $filename"
+              NEEDS_BUMP=true
+              break
+            fi
+          done
+        else
+          echo "No previous artifacts found, will bump version"
+          NEEDS_BUMP=true
+        fi
+        
+        if [ "$NEEDS_BUMP" = "true" ]; then
+          # Split version into components
+          IFS='.' read -r -a version_parts <<< "$CURRENT_VERSION"
+          MAJOR="${version_parts[0]}"
+          MINOR="${version_parts[1]}"
+          PATCH="${version_parts[2]}"
+          
+          # Increment minor version
+          NEW_VERSION="$MAJOR.$((MINOR + 1)).0"
+          echo "Updating version to $NEW_VERSION"
+          
+          # Update package.json
+          npm version $NEW_VERSION --no-git-tag-version
+          
+          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV
+        else
+          echo "NEW_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
+        fi
+
     - name: Create release artifacts
       run: |
         cd artifacts
@@ -87,10 +159,21 @@ jobs:
       uses: softprops/action-gh-release@v1
       with:
         files: circom-artifacts.zip
-        name: Circuit Artifacts ${{ github.sha }}
-        tag_name: v${{ github.run_number }}
+        name: Circuit Artifacts v${{ env.NEW_VERSION }}
+        tag_name: v${{ env.NEW_VERSION }}
         body: |
           Automated release of compiled Circom circuits
+          Version: ${{ env.NEW_VERSION }}
           Commit: ${{ github.sha }}
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    # Commit version bump if needed
+    - name: Commit version bump
+      if: github.event_name == 'push' && github.ref == 'refs/heads/main' && env.NEW_VERSION != env.CURRENT_VERSION
+      run: |
+        git config --local user.email "github-actions[bot]@users.noreply.github.com"
+        git config --local user.name "github-actions[bot]"
+        git add package.json
+        git commit -m "chore: bump version to ${{ env.NEW_VERSION }} [skip ci]"
+        git push