ci.yml

name: CI

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

jobs:
  host-tests:
    name: Host tests (${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest]
    steps:
      - uses: actions/checkout@v4

      - name: Configure
        run: cmake -B build -DMIDI2CPP_BUILD_TESTS=ON

      - name: Build
        run: cmake --build build --parallel

      - name: Test
        working-directory: build
        run: ctest --output-on-failure

  warnings:
    name: Strict warnings (gcc + clang)
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        compiler:
          - { cc: gcc,   cxx: g++ }
          - { cc: clang, cxx: clang++ }
    steps:
      - uses: actions/checkout@v4

      - name: Configure
        env:
          CC: ${{ matrix.compiler.cc }}
          CXX: ${{ matrix.compiler.cxx }}
        run: cmake -B build -DMIDI2CPP_BUILD_TESTS=ON

      - name: Build with -Werror
        run: cmake --build build --parallel -- CXXFLAGS=-Werror CFLAGS=-Werror

  pico-sdk-example:
    name: Pico SDK build (examples/rp2040-midi2)
    runs-on: ubuntu-latest
    needs: host-tests
    steps:
      - uses: actions/checkout@v4

      - name: Install ARM toolchain
        run: |
          sudo apt-get update
          sudo apt-get install -y gcc-arm-none-eabi cmake build-essential

      - name: Clone Pico SDK (with submodules)
        run: |
          git clone --depth 1 -b 2.1.0 \
            https://github.com/raspberrypi/pico-sdk.git "$HOME/pico-sdk"
          cd "$HOME/pico-sdk"
          git submodule update --init --depth 1

      - name: Configure + build rp2040-midi2-showcase
        env:
          PICO_SDK_PATH: ${{ github.workspace }}/../pico-sdk
        working-directory: examples/rp2040-midi2
        run: |
          export PICO_SDK_PATH="$HOME/pico-sdk"
          cmake -B build
          cmake --build build --target rp2040-midi2-showcase --parallel

      - name: Verify UF2 produced
        working-directory: examples/rp2040-midi2
        run: |
          ls -la build/rp2040-midi2-showcase.uf2
          arm-none-eabi-size build/rp2040-midi2-showcase.elf

      - name: Upload UF2 artifact
        uses: actions/upload-artifact@v4
        with:
          name: rp2040-midi2-showcase-${{ github.sha }}
          path: examples/rp2040-midi2/build/rp2040-midi2-showcase.uf2
          retention-days: 14

  arduino-compile:
    name: Arduino compile (${{ matrix.fqbn }})
    runs-on: ubuntu-latest
    needs: host-tests
    strategy:
      fail-fast: false
      matrix:
        fqbn:
          - rp2040:rp2040:rpipico
          # Teensy and ESP32 cores require additional setup; enable when
          # the boards manager URL + tool toolchain are stable in CI.
          # - teensy:avr:teensy41
          # - esp32:esp32:esp32s3
        include:
          - fqbn: rp2040:rp2040:rpipico
            platform: rp2040:rp2040
            url: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
    steps:
      - uses: actions/checkout@v4

      - name: Setup arduino-cli
        uses: arduino/setup-arduino-cli@v2

      - name: Install board core
        run: |
          arduino-cli config init
          arduino-cli config add board_manager.additional_urls ${{ matrix.url }}
          arduino-cli core update-index
          arduino-cli core install ${{ matrix.platform }}

      - name: Symlink lib for arduino-cli sketch resolution
        run: |
          mkdir -p ~/Arduino/libraries
          ln -s "$GITHUB_WORKSPACE" ~/Arduino/libraries/midi2cpp

      - name: Install midi2 dependency from Library Manager
        # midi2cpp depends on midi2 (>=0.3.4) but arduino-cli does not
        # walk depends= entries automatically. Install it explicitly.
        # Falls back to the GitHub git URL if the registry index has
        # not propagated yet (Library Manager indexes within 24h of a
        # registry merge).
        run: |
          arduino-cli lib update-index
          arduino-cli lib install midi2 || \
            (arduino-cli config set library.enable_unsafe_install true && \
             arduino-cli lib install --git-url https://github.com/sauloverissimo/midi2.git#v0.3.4)

      - name: Compile Arduino sketches (skip non-sketch dirs)
        run: |
          shopt -s nullglob
          compiled=0
          for sketch in examples/*/; do
            name=$(basename "$sketch")
            inos=("$sketch"*.ino)
            if [ ${#inos[@]} -eq 0 ]; then
              echo "Skip $name (no .ino files; not an Arduino sketch)"
              continue
            fi
            echo "::group::Compile $name"
            arduino-cli compile --fqbn ${{ matrix.fqbn }} --warnings all "$sketch" || exit 1
            echo "::endgroup::"
            compiled=$((compiled + 1))
          done
          echo "Compiled $compiled Arduino sketch(es)."