name: CI

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

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  test:
    name: Test
    runs-on: macos-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust toolchain
        run: rustup show

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

      - name: Cache build artifacts
        uses: actions/cache@v4
        with:
          path: target/
          key: ${{ runner.os }}-build-${{ hashFiles('**/Cargo.toml') }}-${{ hashFiles('**/*.rs') }}
          restore-keys: |
            ${{ runner.os }}-build-${{ hashFiles('**/Cargo.toml') }}-
            ${{ runner.os }}-build-

      - name: Check dependency isolation
        run: |
          if cargo tree -p agent-desktop-core 2>/dev/null | grep -E 'agent-desktop-(macos|windows|linux)'; then
            echo "FAIL: core crate depends on platform crates"
            exit 1
          fi
          echo "OK: core crate has no platform dependencies"

      - name: Clippy
        run: cargo clippy --all-targets -- -D warnings

      - name: Unit tests
        run: cargo test --lib --workspace

      - name: Build release binary
        run: cargo build --release

      - name: Check binary size
        run: |
          SIZE=$(stat -f%z target/release/agent-desktop)
          LIMIT=$((15 * 1024 * 1024))
          echo "Binary size: $(du -sh target/release/agent-desktop | cut -f1)"
          if [ "$SIZE" -gt "$LIMIT" ]; then
            echo "FAIL: binary exceeds 15MB limit (${SIZE} bytes)"
            exit 1
          fi
          echo "OK: binary within 15MB limit"

  fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: rustup component add rustfmt
      - run: cargo fmt --all -- --check