name: Build Rust FFI

on:
  push:
    branches: [main, develop]
    paths:
      - 'rust/**'
      - '.github/workflows/build-rust-ffi.yml'
  pull_request:
    branches: [main]
    paths:
      - 'rust/**'
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  build-macos:
    runs-on: macos-latest
    strategy:
      matrix:
        target: [aarch64-apple-darwin, x86_64-apple-darwin]
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}

      - name: Cache cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            rust/target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-

      - name: Build Rust library
        run: |
          cd rust
          cargo build --release --target ${{ matrix.target }}

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: libcodex-ffi-${{ matrix.target }}
          path: |
            rust/target/${{ matrix.target }}/release/libcodex_ffi.dylib
            rust/target/${{ matrix.target }}/release/libcodex_ffi.a

  build-universal:
    needs: build-macos
    runs-on: macos-latest
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Download aarch64 artifact
        uses: actions/download-artifact@v4
        with:
          name: libcodex-ffi-aarch64-apple-darwin
          path: target/aarch64

      - name: Download x86_64 artifact
        uses: actions/download-artifact@v4
        with:
          name: libcodex-ffi-x86_64-apple-darwin
          path: target/x86_64

      - name: Create universal binary
        run: |
          mkdir -p rust/target/universal
          lipo -create \
            target/aarch64/libcodex_ffi.dylib \
            target/x86_64/libcodex_ffi.dylib \
            -output rust/target/universal/libcodex_ffi.dylib
          lipo -create \
            target/aarch64/libcodex_ffi.a \
            target/x86_64/libcodex_ffi.a \
            -output rust/target/universal/libcodex_ffi.a

      - name: Upload universal artifact
        uses: actions/upload-artifact@v4
        with:
          name: libcodex-ffi-universal
          path: |
            rust/target/universal/libcodex_ffi.dylib
            rust/target/universal/libcodex_ffi.a

  test:
    runs-on: macos-latest
    needs: build-universal
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Cache cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            rust/target
          key: ${{ runner.os }}-cargo-test-${{ hashFiles('**/Cargo.lock') }}

      - name: Run Rust tests
        run: |
          cd rust
          cargo test --release

  integrate-flutter:
    runs-on: macos-latest
    needs: build-universal
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Download universal artifact
        uses: actions/download-artifact@v4
        with:
          name: libcodex-ffi-universal
          path: rust/target/universal

      - name: Setup Flutter
        uses: subosito/flutter-action@v2
        with:
          flutter-version: '3.24.3'
          channel: 'stable'

      - name: Copy FFI library to Frameworks
        run: |
          mkdir -p macos/Frameworks
          cp rust/target/universal/libcodex_ffi.dylib macos/Frameworks/

      - name: Analyze Flutter code
        run: flutter analyze lib/runtime/

      - name: Run Flutter tests
        run: flutter test test/runtime/