name: Setup Build Environment
runs:
  using: "composite"
  steps:

    - name: Init Cache
      uses: actions/cache@v4
      with:
        path: |
          ~/.cache/pip
          ~/.platformio/.cache
        key: ${{ runner.os }}-pio

    - name: Install Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.11'

    - name: Install PlatformIO
      shell: bash
      run: |
        pip install --upgrade platformio

    # a git tag of "room-server-v1.2.3" should set "v1.2.3" as GIT_TAG_VERSION
    # a git tag of "wio-tracker-v1.15-plus.1.3" should set "v1.15-plus.1.3" as GIT_TAG_VERSION
    # Strip the shortest prefix ending with "-v" so hyphens in the version are preserved.
    - name: Extract Version from Git Tag
      shell: bash
      run: |
        GIT_TAG_NAME="${GITHUB_REF#refs/tags/}"
        echo "GIT_TAG_VERSION=v${GIT_TAG_NAME#*-v}" >> $GITHUB_ENV