name: CI (build)

on:
  push:
    branches: [master]
  pull_request:

permissions:
  contents: read

jobs:
  clang-format:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.13'

      - name: Install clang-format-21
        run: |
          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh 21
          sudo apt-get update
          sudo apt-get install -y clang-format-21

      - name: Run clang-format
        run: |
          PATH="/usr/lib/llvm-21/bin:$PATH" ./bin/clang-format-fix
          git diff --exit-code || (echo "Please run 'bin/clang-format-fix' to fix formatting issues" && exit 1)

  cppcheck:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.13'

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          version: "latest"
          enable-cache: false

      - name: Install PlatformIO Core
        run: |
          uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
          # platform-espressif32's builder/main.py imports these unconditionally; its own
          # penv bootstrap (builder/penv_setup.py) is supposed to install them automatically
          # but isn't picking them up reliably in this runner image, so pin them explicitly.
          uv pip install --system -U "littlefs-python>=0.16.0" "fatfs-ng>=0.1.14" "pyyaml>=6.0.2" \
            "rich-click>=1.8.6" "zopfli>=0.2.2" "intelhex>=2.3.0" "rich>=14.0.0" "urllib3<2" \
            "cryptography>=45.0.3" "certifi>=2025.8.3" "ecdsa>=0.19.1" "bitstring>=4.3.1" \
            "reedsolo>=1.5.3,<1.8" "esp-idf-size>=2.0.0" "esp-coredump>=1.14.0"

      - name: Cache PlatformIO packages
        uses: actions/cache@v4
        with:
          path: ~/.platformio
          key: pio-v2-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
          restore-keys: pio-v2-${{ runner.os }}-

      - name: Install cppcheck runtime dependency
        run: |
          # pioarduino's Linux cppcheck binary links against libpcre.so.3.
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends libpcre3

      - name: Run cppcheck
        run: pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high

  build:
    name: Build ${{ matrix.env }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        # Short board-specific names keep pull-request artifacts easy to identify.
        # The release workflow applies the published crosspoint-<version>-<device>.bin names.
        include:
          - env: default
            asset: firmware.bin
          - env: sticky
            asset: firmware-sticky.bin
          - env: x4pro
            asset: firmware-x4pro.bin
          - env: x4c
            asset: firmware-x4c.bin
          - env: papermono
            asset: firmware-papermono.bin
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.13'

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          version: "latest"
          enable-cache: false

      - name: Install PlatformIO Core
        run: |
          uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
          # platform-espressif32's builder/main.py imports these unconditionally; its own
          # penv bootstrap (builder/penv_setup.py) is supposed to install them automatically
          # but isn't picking them up reliably in this runner image, so pin them explicitly.
          uv pip install --system -U "littlefs-python>=0.16.0" "fatfs-ng>=0.1.14" "pyyaml>=6.0.2" \
            "rich-click>=1.8.6" "zopfli>=0.2.2" "intelhex>=2.3.0" "rich>=14.0.0" "urllib3<2" \
            "cryptography>=45.0.3" "certifi>=2025.8.3" "ecdsa>=0.19.1" "bitstring>=4.3.1" \
            "reedsolo>=1.5.3,<1.8" "esp-idf-size>=2.0.0" "esp-coredump>=1.14.0"

      - name: Cache PlatformIO packages
        uses: actions/cache@v4
        with:
          path: ~/.platformio
          key: pio-v3-${{ runner.os }}-${{ matrix.env }}-${{ hashFiles('platformio.ini') }}
          restore-keys: pio-v3-${{ runner.os }}-${{ matrix.env }}-

      - name: Pin pioarduino core inside the platform penv
        run: |
          set -euo pipefail
          # Envs with custom_sdkconfig (default, sticky) run a nested `pio run` from
          # ~/.platformio/penv. The platform bootstraps that penv with an open-ended
          # "pioarduino>=6.1.19", which now resolves to 6.2.0. That core wants
          # tool-scons 4.11.1 while platform 55.03.311 pins 4.8.1; the two keep
          # reinstalling over each other and the running SCons loses its package
          # mid-build ("No module named 'SCons.Tool.FortranCommon'"). Keep the penv
          # core on the same version as the outer core installed above.
          # See https://github.com/pioarduino/platform-espressif32/issues/529
          pio pkg install -e ${{ matrix.env }}
          uv pip install --python ~/.platformio/penv/bin/python "pioarduino==6.1.19"
          ~/.platformio/penv/bin/pio --version

      - name: Build ${{ matrix.env }} firmware
        run: |
          set -euo pipefail
          pio run -e ${{ matrix.env }} | tee pio.log

      - name: Extract firmware stats
        run: |
          set -euo pipefail
          ram_line="$(grep -E "RAM:\\s" -m1 pio.log || true)"
          flash_line="$(grep -E "Flash:\\s" -m1 pio.log || true)"
          echo "ram_line=${ram_line}" >> "$GITHUB_OUTPUT"
          echo "flash_line=${flash_line}" >> "$GITHUB_OUTPUT"
          {
            echo "## ${{ matrix.env }} firmware build stats"
            if [ -n "$ram_line" ]; then echo "- ${ram_line}"; else echo "- RAM: not found"; fi
            if [ -n "$flash_line" ]; then echo "- ${flash_line}"; else echo "- Flash: not found"; fi
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Upload firmware artifact
        uses: actions/upload-artifact@v6
        with:
          name: ${{ matrix.asset }}
          path: .pio/build/${{ matrix.env }}/firmware.bin
          if-no-files-found: error

  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - name: Install build tools
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake ninja-build

      - name: Cache googletest source
        uses: actions/cache@v4
        with:
          path: build/test/_deps/googletest-src
          key: ${{ runner.os }}-googletest-${{ hashFiles('test/CMakeLists.txt') }}

      - name: Configure
        run: cmake -S test -B build/test -G Ninja -DCMAKE_BUILD_TYPE=Release

      - name: Build
        run: cmake --build build/test

      - name: Run tests
        run: ctest --test-dir build/test --output-on-failure -j

  # This job is used as the PR required actions check, allows for changes to other steps in the future without breaking
  # PR requirements.
  test-status:
    name: Test Status
    needs:
      - build
      - clang-format
      - cppcheck
      - unit-tests
    if: always()
    runs-on: ubuntu-latest
    steps:
      - name: Fail because needed jobs failed
        # Fail if any job failed or was cancelled (skipped jobs are ok)
        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
        run: exit 1
      - name: Success
        run: exit 0