gvc 0.1.1

name: CI

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]

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

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  # Stage 1: Fast checks (fail fast)
  fmt:
    name: Format Check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

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

      - name: Check formatting
        run: cargo fmt --all -- --check

  # Stage 2: Linting (after format check)
  clippy:
    name: Clippy Lint
    runs-on: ubuntu-latest
    needs: fmt
    steps:
      - uses: actions/checkout@v5

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

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

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

      - name: Cache cargo build
        uses: actions/cache@v4
        with:
          path: target
          key: ${{ runner.os }}-clippy-${{ hashFiles('**/Cargo.lock') }}

      - name: Run clippy
        run: cargo clippy --all-targets --all-features -- -D warnings

  # Stage 3: Tests (after clippy passes)
  test:
    name: Test (${{ matrix.os }}, ${{ matrix.rust }})
    runs-on: ${{ matrix.os }}
    needs: clippy
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        rust: [stable]
        include:
          # Only test beta on Ubuntu to save CI time
          - os: ubuntu-latest
            rust: beta
    steps:
      - uses: actions/checkout@v5

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

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

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

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

      - name: Run tests
        run: cargo test --verbose

      - name: Run tests (release mode)
        run: cargo test --release --verbose

  # Stage 4: Build artifacts (after tests pass)
  build:
    name: Build (${{ matrix.target }})
    runs-on: ${{ matrix.os }}
    needs: test
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            target: x86_64-unknown-linux-gnu
          - os: macos-latest
            target: x86_64-apple-darwin
          - os: macos-latest
            target: aarch64-apple-darwin
          - os: windows-latest
            target: x86_64-pc-windows-msvc
    steps:
      - uses: actions/checkout@v5

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

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

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

      - name: Cache cargo build
        uses: actions/cache@v4
        with:
          path: target
          key: ${{ runner.os }}-${{ matrix.target }}-release-${{ hashFiles('**/Cargo.lock') }}

      - name: Build release binary
        run: cargo build --release --target ${{ matrix.target }}

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: gvc-${{ matrix.target }}
          path: |
            target/${{ matrix.target }}/release/gvc
            target/${{ matrix.target }}/release/gvc.exe
          if-no-files-found: ignore

  # Stage 5: Coverage (parallel with build, after tests)
  coverage:
    name: Code Coverage
    runs-on: ubuntu-latest
    needs: test
    steps:
      - uses: actions/checkout@v5

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

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

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

      - name: Install tarpaulin
        run: cargo install cargo-tarpaulin

      - name: Generate coverage
        run: cargo tarpaulin --verbose --all-features --workspace --timeout 120 --out xml

      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v5
        with:
          files: ./cobertura.xml
          fail_ci_if_error: false