ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:

env:
  CARGO_TERM_COLOR: always
  RUSTFLAGS: -D warnings

jobs:
  check:
    name: ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [macos-latest, windows-latest, ubuntu-latest]

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy, rustfmt

      - uses: Swatinem/rust-cache@v2

      # iced's winit/wgpu backend needs X11/Wayland and udev headers on Linux.
      - name: Install Linux dependencies
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            libxkbcommon-dev libwayland-dev libxcb1-dev \
            libx11-dev libxrandr-dev libxi-dev libudev-dev \
            mesa-vulkan-drivers

      - name: Format
        if: runner.os == 'Linux'
        run: cargo fmt --all --check

      - name: Clippy
        run: cargo clippy --workspace --all-targets

      - name: Test
        run: cargo test --workspace

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

  # Does the window actually open on Linux? Nothing else here answers that:
  # `cargo build` proves the code compiles, and the unit tests never touch wgpu.
  # The client renders its own screenshots through iced's renderer, so this needs
  # a GPU adapter but no screen-capture permissions.
  #
  # `continue-on-error` because a headless runner getting a working lavapipe
  # adapter is not something this repository can promise — the honest position is
  # to run it and read the log, rather than to assert a green tick it may not be
  # able to earn. Promote it to a required check once it has been seen passing.
  smoke:
    name: linux boot smoke
    runs-on: ubuntu-latest
    continue-on-error: true

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2

      - name: Install runtime dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            libxkbcommon-dev libwayland-dev libxcb1-dev \
            libx11-dev libxrandr-dev libxi-dev libudev-dev \
            mesa-vulkan-drivers libgl1-mesa-dri xvfb

      # Capture mode is the only way to run this app unattended: it renders,
      # saves a PNG and exits. Launching it without `LORE_CAPTURE` would open a
      # window and sit there until the job timed out.
      - name: Capture the workspace screen
        timeout-minutes: 5
        env:
          LORE_CAPTURE: /tmp/workspace.png
          LORE_CAPTURE_SCREEN: workspace
          # lavapipe: software Vulkan, since the runner has no GPU.
          LIBGL_ALWAYS_SOFTWARE: "1"
          WGPU_BACKEND: vulkan
          RUST_LOG: lore_app=debug
        run: |
          xvfb-run -a --server-args="-screen 0 1600x1000x24" \
            cargo run -p lore-app

          # A blank or truncated PNG must not read as success. The real screens
          # are 130 KB and up; anything far below that did not draw the UI.
          size=$(stat -c%s /tmp/workspace.png)
          echo "workspace.png is $size bytes"
          test "$size" -gt 50000

      - uses: actions/upload-artifact@v4
        if: always()
        with:
          name: linux-screenshot
          path: /tmp/workspace.png
          if-no-files-found: warn