name: Update KB Index

on:
  push:
    branches: [ main ]
    paths:
      - 'kb/**/*.md'

permissions:
  contents: write

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          fetch-depth: 0
      
      - name: Generate index
        run: |
          chmod +x kb/scripts/generate-index.sh
          ./kb/scripts/generate-index.sh
      
      - name: Check for changes
        id: check
        run: |
          if git diff --quiet kb/_index.md; then
            echo "changed=false" >> $GITHUB_OUTPUT
          else
            echo "changed=true" >> $GITHUB_OUTPUT
          fi
      
      - name: Commit changes
        if: steps.check.outputs.changed == 'true'
        run: |
          git config user.name "Gitea Actions"
          git config user.email "actions@gitea.io"
          git add kb/_index.md
          git commit -m "chore: update KB index [skip ci]" || exit 0
          git push