agent-desktop/.github/workflows/ci.yml

name: CI

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

# Cancel in-progress runs for the same ref so stale PR builds don't burn minutes.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

# Deny all permissions at workflow level; each job declares only what it needs.
permissions: {}

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  fmt:
    name: Format
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - run: rustup component add rustfmt
      - run: cargo fmt --all -- --check

  test:
    name: Test
    runs-on: macos-latest
    timeout-minutes: 30
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - name: Install Rust toolchain
        run: rustup show

      - name: Cache cargo registry
        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
        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@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
        with:
          path: target/
          key: ${{ runner.os }}-build-ci-${{ hashFiles('**/Cargo.toml') }}-${{ hashFiles('**/*.rs') }}
          restore-keys: |
            ${{ runner.os }}-build-ci-${{ hashFiles('**/Cargo.toml') }}-
            ${{ runner.os }}-build-ci-            

      - 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

      # The FFI crate ships integration harnesses under crates/ffi/tests/ that
      # exercise the C-ABI from outside the crate (raw extern "C" decls, enum
      # fuzzing, out-param zeroing, last-error lifetimes). The workspace --lib
      # run skips them, so wire them in explicitly so regressions fail PR CI.
      - name: FFI integration tests
        run: cargo test -p agent-desktop-ffi --tests

      # Use the ci profile (no LTO, opt-level 1) — fast compile, still checks the binary builds.
      - name: Build binary (ci profile)
        run: cargo build --profile ci

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

      - name: FFI cdylib build (release-ffi profile)
        run: cargo build --profile release-ffi -p agent-desktop-ffi

      - name: FFI header drift check
        run: |
          # build.rs stamps target/ffi-header-path.txt with the absolute path
          # to the header produced by the most recent build, so the drift
          # check always compares against the just-generated artifact rather
          # than an arbitrary match from `find | head -1` over a warm cache.
          STAMP=target/ffi-header-path.txt
          if [ ! -f "$STAMP" ]; then
            echo "FAIL: $STAMP missing; build.rs did not stamp header path"
            exit 1
          fi
          GENERATED=$(cat "$STAMP")
          if [ ! -f "$GENERATED" ]; then
            echo "FAIL: stamped header path does not exist: $GENERATED"
            exit 1
          fi
          if ! diff -u crates/ffi/include/agent_desktop.h "$GENERATED"; then
            echo "FAIL: crates/ffi/include/agent_desktop.h is out of date"
            echo "Run 'scripts/update-ffi-header.sh' locally and commit the regenerated header."
            exit 1
          fi
          echo "OK: FFI header is in sync with source"