artifacts.yaml

name: build-circuits

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Install Protocol Buffers
      run: |
        sudo apt-get update
        sudo apt-get install -y protobuf-compiler libprotobuf-dev

    - name: Install Rust
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: nightly-2024-06-10

    - name: Install Circom
      run: |
        CIRCOM_VERSION=2.1.9
        curl -L https://github.com/iden3/circom/releases/download/v$CIRCOM_VERSION/circom-linux-amd64 -o circom
        chmod +x circom
        sudo mv circom /usr/local/bin/
        circom --version

    - name: Install circom-witnesscalc
      run: |
        cd .. && git clone https://github.com/pluto/circom-witnesscalc.git
        cd circom-witnesscalc
        cargo install --path .
        echo $(which build-circuit)

    - name: Install Node.js dependencies
      run: |
        npm install

    - name: Get package version
      id: package_version
      run: |
        VERSION=$(node -p "require('./package.json').version")
        echo "VERSION=$VERSION" >> $GITHUB_ENV

    - name: Compile Circom circuits
      run: |
        mkdir -p artifacts
        for circuit in circuits/*.circom; do
          if [ -f "$circuit" ]; then
            filename=$(basename "$circuit" .circom)
            output_dir="artifacts/$filename"
            mkdir -p "$output_dir"
            
            echo "Processing $filename..."
            
            # Run circom compilation
            circom "$circuit" --r1cs --wasm -o "$output_dir" -l node_modules
            
            # Run witness calculator build
            build-circuit "$circuit" "$output_dir/$filename.bin" -l node_modules
          fi
        done

    - name: Create release artifacts
      run: |
        cd artifacts
        zip -r ../circom-artifacts-v${VERSION}.zip ./*
        cd ..

    # Upload artifacts for PR
    - name: Upload artifacts for PR
      if: github.event_name == 'pull_request'
      uses: actions/upload-artifact@v4
      with:
        name: circom-artifacts-v${{ env.VERSION }}
        path: artifacts/
        retention-days: 5

    # Create Release only on push to main
    - name: Create Release
      if: github.event_name == 'push' && github.ref == 'refs/heads/main'
      uses: softprops/action-gh-release@v1
      with:
        files: circom-artifacts-v${{ env.VERSION }}.zip
        name: Circuit Artifacts v${{ env.VERSION }}
        tag_name: v${{ env.VERSION }}
        body: |
          Automated release of compiled Circom circuits
          Version: ${{ env.VERSION }}
          Commit: ${{ github.sha }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}