name: Build Examples

on:   
  push: 
    paths: 
    - ./firmware
  pull_request:
  workflow_dispatch:

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest ]
        example:
          - ./firmware/esp32c3-blink
          - ./firmware/esp32c3-wifi-scan
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: "recursive"

      - name: Cache pip
        uses: actions/cache@v2
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-
    
      - name: Cache PlatformIO
        uses: actions/cache@v2
        with:
          path: ~/.platformio
          key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}

      - name: Set up Python
        uses: actions/setup-python@v3
        with:
          python-version: "3.9"

      - name: Install PlatformIO
        run: |
          python -m pip install --upgrade pip
          pip install --upgrade platformio
          
      - name: Build examples
        run: |
          pio run -d ${{ matrix.example }}