name: Update Language Statistics

on:
  push:
    branches:
      - main
      - master
    paths:
      - 'README.md'
  workflow_dispatch:

jobs:
  update-stats:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x'
      
      - name: Generate language statistics
        run: python3 .github/scripts/generate_stats.py
      
      - name: Check for changes
        id: git-check
        run: |
          git diff --exit-code STATS-main.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 STATS-main.md
          git commit -m "Auto-update language statistics [skip ci]"
          git push