ci.yml

# Main CI workflow
name: CI

permissions:
  contents: read

on:
  push:
    branches: [main, "v[0-9]+.[0-9]+.x"]
  pull_request:
    branches: ["**"]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.ref_name == 'main' && github.sha || 'anysha' }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1
  CARGO_INCREMENTAL: 0

jobs:
  # Change detection
  orchestrate:
    runs-on: ubuntu-latest
    outputs:
      run_tests: ${{ steps.filter.outputs.run_tests }}
      run_style: ${{ steps.filter.outputs.run_style }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: ${{ github.ref == 'refs/heads/main' && 2 || 350 }}
      - id: filter
        run: |
          if [ -z "$GITHUB_BASE_REF" ]; then
            COMPARE_REV="$(git rev-parse HEAD~1)"
          else
            git fetch --update-head-ok origin "$GITHUB_BASE_REF" --depth=350 || true
            COMPARE_REV="$(git merge-base "origin/${GITHUB_BASE_REF}" HEAD)"
          fi
          CHANGED_FILES="$(git diff --name-only "$COMPARE_REV" "$GITHUB_SHA")"

          check_pattern() {
            local name="$1" pattern="$2" invert="${3:-false}"
            if [ "$invert" = "true" ]; then
              echo "$CHANGED_FILES" | grep -qvE "$pattern" && echo "${name}=true" >> "$GITHUB_OUTPUT" || echo "${name}=false" >> "$GITHUB_OUTPUT"
            else
              echo "$CHANGED_FILES" | grep -qE  "$pattern" && echo "${name}=true" >> "$GITHUB_OUTPUT" || echo "${name}=false" >> "$GITHUB_OUTPUT"
            fi
          }

          check_pattern "run_tests" '^(docs/|\.github/(ISSUE_TEMPLATE|workflows/)|README\.md|CHANGELOG\.md)' true
          check_pattern "run_style" '\.(rs|toml)$|rust-toolchain\.toml|\.cargo/|clippy\.toml|typos\.toml'

  # Formatting
  fmt:
    runs-on: ubuntu-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_style == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          components: rustfmt
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just fmt-check

  # Clippy
  clippy:
    runs-on: ubuntu-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_style == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          components: clippy
      - uses: Swatinem/rust-cache@v2
      - name: Install system deps
        run: |
          sudo apt-get update
          sudo apt-get install -y libxkbcommon-dev libxkbcommon-x11-dev libwayland-dev libx11-dev libxcb-shape0-dev libxcb-xfixes0-dev libfontconfig-dev
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just clippy

  # Spell check
  typos:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: crate-ci/typos@v1.47.2
        with:
          config: typos.toml

  # Lockfile freshness is advisory: dependency resolution changes often come
  # from upstream releases and should be reviewed, not block unrelated work.
  lockfile:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
      - name: Check root lockfile freshness (warning only)
        shell: bash
        run: |
          warn() {
            echo "::warning title=Lockfile freshness::$1"
          }

          if ! cargo update; then
            warn "Could not refresh Cargo.lock; inspect dependency resolution."
          elif ! git diff --quiet -- Cargo.lock; then
            git diff -- Cargo.lock
            warn "Cargo.lock changed after cargo update; refresh it in a dedicated dependency update."
          fi

  # Unused dependencies
  machete:
    runs-on: ubuntu-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_style == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: Swatinem/rust-cache@v2
      - uses: taiki-e/install-action@cargo-machete
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just machete

  # MSRV
  msrv:
    if: github.event_name == 'pull_request' && needs.orchestrate.outputs.run_style == 'true'
    needs: [orchestrate]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          toolchain: 1.95.0
      - uses: Swatinem/rust-cache@v2
      - name: Install system deps
        run: |
          sudo apt-get update
          sudo apt-get install -y libxkbcommon-dev libxkbcommon-x11-dev libwayland-dev libx11-dev libxcb-shape0-dev libxcb-xfixes0-dev libfontconfig-dev
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just msrv-check

  # WASM target (nightly + atomics)
  check-wasm:
    if: github.event_name == 'pull_request' && needs.orchestrate.outputs.run_style == 'true'
    needs: [orchestrate]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - name: Install nightly toolchain with rust-src and WASM target
        run: rustup toolchain install nightly --component rust-src --target wasm32-unknown-unknown
      - uses: Swatinem/rust-cache@v2
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just check-wasm-atomics

  # Linux build + test
  test-linux:
    runs-on: ubuntu-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
      - uses: Swatinem/rust-cache@v2
      - name: Install system deps
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            libxkbcommon-dev libwayland-dev libx11-dev \
            libxcb-shape0-dev libxcb-xfixes0-dev \
            libxcb-randr0-dev libxcb-xinput-dev \
            libxkbcommon-x11-dev libegl1-mesa-dev \
            libgles2-mesa-dev libglib2.0-dev libfontconfig-dev
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just build
      - run: just test
      - run: just test-doc

  # macOS build + test
  test-mac:
    runs-on: macos-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
      - uses: Swatinem/rust-cache@v2
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just build
      - run: just test
      - run: just test-doc
      - name: Test Parley rendering invariants
        run: GPUI_RUN_RENDERING_TESTS=1 cargo test -p gpui_ce_platform --test parley_render

  # Windows build + test
  test-windows:
    runs-on: windows-latest
    needs: [orchestrate]
    if: needs.orchestrate.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
      - uses: Swatinem/rust-cache@v2
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just build
      - run: just test
      - run: just test-doc
      - name: Test Parley rendering invariants
        run: $env:GPUI_RUN_RENDERING_TESTS=1; cargo test -p gpui_ce_platform --test parley_render

  # Examples
  check-examples:
    runs-on: ubuntu-latest
    needs: [orchestrate]
    if: github.event_name == 'pull_request' && needs.orchestrate.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v5
      - uses: actions-rust-lang/setup-rust-toolchain@v1
      - uses: Swatinem/rust-cache@v2
      - name: Install system deps
        run: |
          sudo apt-get update
          sudo apt-get install -y libxkbcommon-dev libxkbcommon-x11-dev libwayland-dev libx11-dev libxcb-shape0-dev libxcb-xfixes0-dev libfontconfig-dev
      - name: Add WASM target
        run: rustup target add wasm32-unknown-unknown
      - uses: hustcer/setup-nu@v3
      - uses: extractions/setup-just@v2
      - run: just check-examples