check-images.yml

name: Check Image Size

on: pull_request

env:
  MAX_SIZE: 3145728
  MAX_SIZE_MB: 3MB

jobs:
  imageSizeCheck:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v2

    - name: Check image size
      run: |
        exceeded=false
        for file in $(git diff --name-only --diff-filter=A ${{ github.event.before }} ${{ github.sha }} | grep -E '\.(jpg|jpeg|png|gif|webp)$'); do
          if [ $(stat -c%s "$file") -gt ${{ env.MAX_SIZE }} ]; then
            echo "$file exceeds ${{ env.MAX_SIZE_MB }}"
            exceeded=true
          fi
        done

        if [ "$exceeded" = true ] ; then
          echo "::error::Some images exceed ${{ env.MAX_SIZE_MB }} size limit."
          exit 1
        fi

    - name: Add Comment
      if: failure()
      uses: actions/github-script@v3
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        script: |
          const issue_number = context.issue.number;
          github.issues.createComment({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: issue_number,
            body: 'The PR contains images that exceed the ${{ env.MAX_SIZE_MB }} size limit. Please reduce the size of the images.'
          });