name: Enforce Image Standards

on:
  pull_request:
    paths:
      - '**.jpg'
      - '**.jpeg'
      - '**.png'
  workflow_dispatch:

jobs:
  optimize:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

      - name: Install Image Tools
        run: |
          sudo apt-get update
          sudo apt-get install -y imagemagick jpegoptim pngquant

      # Resize images larger than 1920px (keeps aspect ratio)
      - name: Resize Oversized Images
        run: |
          find . -type f \( -iname "*.jpg" -o -iname "*.jpeg" -o -iname "*.png" \) \
          -exec mogrify -resize 1920x1920\> {} \;

      #  Optimize JPEG safely
      - name: Optimize JPEG
        run: |
          find . -type f \( -iname "*.jpg" -o -iname "*.jpeg" \) \
          -exec jpegoptim --strip-all --max=85 {} \;

      #  Optimize PNG safely
      - name: Optimize PNG
        run: |
          find . -type f -iname "*.png" \
          -exec pngquant --force --ext .png --quality=75-90 {} \;

      #  Commit only if changes exist
      - name: Commit Optimized Images
        run: |
          git config --global user.name "gitea-actions"
          git config --global user.email "actions@local"

          if [ -n "$(git status --porcelain)" ]; then
            git add .
            git commit -m "Auto resize and optimize images"
            git push origin HEAD:${{ github.head_ref }}
          fi