themes-screenshot-on-pr.yml

name: System monitor - themes screenshot (on PR)

on:
  pull_request:

jobs:
  system-monitor-theme-screenshot:
    name: Generate screenshot for all themes
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
    - name: Set up Python 3.x
      uses: actions/setup-python@v5
      with:
        python-version: "3.13"

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        python -m pip install -r requirements.txt

    - name: Configure system monitor for screenshot
      run: |
        # Use static data
        sed -i "/HW_SENSORS:/c\  HW_SENSORS: STATIC" config.yaml

    - name: Run system monitor for 5 seconds on all themes
      run: |
        for dir in res/themes/*/
        do
          if test -f "$dir/theme.yaml"; then        
            # Keep only folder name
            theme=`basename "${dir%*/}"`
          
            # Setup selected theme in config.yaml
            echo "Using theme $theme"
            sed -i '/THEME:/c\  THEME: "'"$theme"'"' config.yaml
    
            # For tests there is no real HW: use simulated LCD mode
            # Check if theme is for 5"
            orientation=$(grep 'DISPLAY_SIZE' "$dir/theme.yaml" | sed 's/ //g')
            if [ "$orientation" == "DISPLAY_SIZE:5\"" ]; then
              sed -i "/REVISION:/c\  REVISION: SIMU5" config.yaml
            else
              sed -i "/REVISION:/c\  REVISION: SIMU" config.yaml
            fi
        
            # Run system-monitor for 10 seconds
            python3 main.py > output.log 2>&1 &
            sleep 10
            killall -9 python3
          
            # Rename screen capture
            cp screencap.png "screenshot-$theme.png"
        
            # Compare with original theme preview to detect changes, generate a diff
            if [ -f "$dir/preview.png" ]; then
              python3 tools/compare-images.py "screenshot-$theme.png" "$dir/preview.png" "diff-$theme.png"
              if [ -f "diff-$theme.png" ]; then
                echo "::warning::$theme theme rendering has changed, check if it is intentional or a side-effect. A diff is included in the job artifacts."
              fi
            fi
          fi
        done

    - name: Archive screenshots
      uses: actions/upload-artifact@v4
      with:
        name: themes-screenshots
        path: |
          screenshot-*.png
          diff-*.png