name: Reusable user config build

on: 
  workflow_call:
    inputs:
      build_matrix_path:
        description: 'Path to the build matrix file'
        default: 'build.yaml'
        required: false
        type: string
      config_path:
        description: 'Path to the config directory'
        default: 'config'
        required: false
        type: string
      fallback_binary:
        description: 'Fallback binary format, if no *.uf2 file was built'
        default: 'bin'
        required: false
        type: string

jobs:
  matrix:
    runs-on: ubuntu-latest
    name: Fetch Build Keyboards
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Install yaml2json
        run: python3 -m pip install remarshal

      - id: set-matrix
        name: Fetch Build Matrix
        run: |
          matrix=$(yaml2json ${{ inputs.build_matrix_path }} | jq -c .)
          yaml2json ${{ inputs.build_matrix_path }}
          echo "::set-output name=matrix::${matrix}"

  build:
    runs-on: ubuntu-latest
    container:
      image: zmkfirmware/zmk-build-arm:stable
    needs: matrix
    name: Build
    strategy:
      fail-fast: false
      matrix: ${{fromJson(needs.matrix.outputs.matrix)}}
    steps:
      - name: Prepare variables
        id: variables
        run: |
          if [ -n "${{ matrix.shield }}" ]; then
            EXTRA_CMAKE_ARGS="-DSHIELD=${{ matrix.shield }}"
            ARTIFACT_NAME="${{ matrix.shield }}-${{ matrix.board }}-zmk"
            DISPLAY_NAME="${{ matrix.shield }} - ${{ matrix.board }}"
          else
            EXTRA_CMAKE_ARGS=
            DISPLAY_NAME="${{ matrix.board }}"
            ARTIFACT_NAME="${{ matrix.board }}-zmk"
          fi
          echo ::set-output name=extra-cmake-args::${EXTRA_CMAKE_ARGS}
          echo ::set-output name=artifact-name::${ARTIFACT_NAME}
          echo ::set-output name=display-name::${DISPLAY_NAME}
          echo ::set-output name=zephyr-version::${ZEPHYR_VERSION}

      - name: Checkout
        uses: actions/checkout@v2

      - name: Cache west modules
        uses: actions/cache@v3.0.1
        env:
          cache-name: cache-zephyr-${{ steps.variables.outputs.zephyr-version }}-modules
        with:
          path: |
            modules/
            tools/
            zephyr/
            bootloader/
            zmk/
          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('${{ inputs.config_path }}/west.yml') }}
          restore-keys: |
            ${{ runner.os }}-build-${{ env.cache-name }}-
            ${{ runner.os }}-build-
            ${{ runner.os }}-

      - name: West Init
        run: west init -l ${{ inputs.config_path }}

      - name: West Update
        run: west update

      - name: West Zephyr export
        run: west zephyr-export

      - name: West Build (${{ steps.variables.outputs.display-name }})
        run: |
          west build -s zmk/app -b ${{ matrix.board }} -- -DZMK_CONFIG=${GITHUB_WORKSPACE}/${{ inputs.config_path }} ${{ steps.variables.outputs.extra-cmake-args }} ${{ matrix.cmake-args }}

      - name: ${{ steps.variables.outputs.display-name }} Kconfig file
        run: cat build/zephyr/.config | grep -v "^#" | grep -v "^$"
      
      - name: Rename artifacts
        run: |
          mkdir build/artifacts
          if [ -f build/zephyr/zmk.uf2 ]
          then
            cp build/zephyr/zmk.uf2 "build/artifacts/${{ steps.variables.outputs.artifact-name }}.uf2"
          elif [ -f build/zephyr/zmk.${{ inputs.fallback_binary }} ]
          then
            cp build/zephyr/zmk.${{ inputs.fallback_binary }} "build/artifacts/${{ steps.variables.outputs.artifact-name }}.${{ inputs.fallback_binary }}"
          fi
      
      - name: Archive (${{ steps.variables.outputs.display-name }})
        uses: actions/upload-artifact@v2
        with:
          name: firmware
          path: build/artifacts