name: Build firmware

on:
  push:
  workflow_dispatch:

env:
  PICO_SDK_REF: 2.2.0
  TINYUSB_REF: 0.20.0
  PICO_SDK_PATH: ${{ github.workspace }}/pico-sdk

jobs:
  build:
    name: Build UF2 artifacts
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Install build dependencies
        run: |
          sudo apt update
          sudo apt install -y cmake python3 build-essential gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib ninja-build

      - name: Cache Pico SDK
        uses: actions/cache@v4
        with:
          path: ${{ env.PICO_SDK_PATH }}
          key: pico-sdk-${{ runner.os }}-${{ env.PICO_SDK_REF }}-tinyusb-${{ env.TINYUSB_REF }}

      - name: Prepare Pico SDK
        run: |
          if [ ! -d "$PICO_SDK_PATH/.git" ]; then
            git clone --depth 1 --branch "$PICO_SDK_REF" https://github.com/raspberrypi/pico-sdk.git "$PICO_SDK_PATH"
          fi
          git -C "$PICO_SDK_PATH" submodule update --init --recursive

      - name: Switch TinyUSB to configured tag
        run: |
          if ! git -C "$PICO_SDK_PATH/lib/tinyusb" rev-parse -q --verify "refs/tags/$TINYUSB_REF" >/dev/null; then
            git -C "$PICO_SDK_PATH/lib/tinyusb" fetch --depth 1 origin "refs/tags/$TINYUSB_REF:refs/tags/$TINYUSB_REF"
          fi
          git -C "$PICO_SDK_PATH/lib/tinyusb" checkout --detach "$TINYUSB_REF"

      - name: Build standard firmware
        run: |
          cmake -S . -B build/standard -G Ninja \
            -DCMAKE_BUILD_TYPE=Release \
            -DPICO_SDK_PATH="$PICO_SDK_PATH"
          cmake --build build/standard --target ds5-bridge
          mkdir -p artifacts
          cp build/standard/ds5-bridge.uf2 artifacts/ds5-bridge.uf2

      - name: Build DSE firmware
        run: |
          cmake -S . -B build/dse -G Ninja \
            -DCMAKE_BUILD_TYPE=Release \
            -DPICO_SDK_PATH="$PICO_SDK_PATH" \
            -DENABLE_DSE=ON
          cmake --build build/dse --target ds5-bridge
          cp build/dse/ds5-bridge.uf2 artifacts/ds5-bridge-dse.uf2

      - name: Upload UF2 artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ds5-bridge-uf2
          path: artifacts/*.uf2
          if-no-files-found: error