name: Update Problem Count

on:
  push:
    branches: [ main ]
    paths:
      - 'research/**'
      - 'algorithmic/problems/**'
  workflow_dispatch:  # Allow manual trigger

jobs:
  update-count:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.12'
    
    - name: Update problem count in README
      run: |
        python scripts/update_problem_count.py
    
    - name: Check for changes
      id: git-check
      run: |
        git diff --exit-code README.md || echo "changed=true" >> $GITHUB_OUTPUT
    
    - name: Commit and push if changed
      if: steps.git-check.outputs.changed == 'true'
      run: |
        git config --local user.email "github-actions[bot]@users.noreply.github.com"
        git config --local user.name "github-actions[bot]"
        git add README.md
        git commit -m "chore: update problem count [skip ci]"
        git push