name: Format Sources Lists

on:
  pull_request:
    paths:
      - 'sources.txt'
      - 'sourcesnsfw.txt'
  workflow_dispatch:

jobs:
  format:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
    - uses: actions/checkout@v4
      with:
        ref: ${{ github.head_ref || github.ref }}
    
    - name: Sort and remove duplicates
      run: |
        LC_ALL=C sort -u -o sources.txt sources.txt
        LC_ALL=C sort -u -o sourcesnsfw.txt sourcesnsfw.txt
        
    - name: Commit changes
      run: |
        git config user.name "github-actions[bot]"
        git config user.email "github-actions[bot]@users.noreply.github.com"
        git add sources.txt sourcesnsfw.txt
        git diff --quiet && git diff --staged --quiet || (git commit -m "Auto-format sources lists: sort and remove duplicates" && git push)