name: Validate Frontmatter

on:
  pull_request:
    paths:
      - '**/agents/*.md'
      - '**/skills/*/SKILL.md'
      - '**/commands/*.md'

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: oven-sh/setup-bun@v2

      - name: Install dependencies
        run: cd .github/scripts && bun install yaml

      - name: Get changed frontmatter files
        id: changed
        run: |
          FILES=$(gh pr diff ${{ github.event.pull_request.number }} --name-only | grep -E '(agents/.*\.md|skills/.*/SKILL\.md|commands/.*\.md)$' || true)
          echo "files<<EOF" >> "$GITHUB_OUTPUT"
          echo "$FILES" >> "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Validate frontmatter
        if: steps.changed.outputs.files != ''
        run: |
          echo "${{ steps.changed.outputs.files }}" | xargs bun .github/scripts/validate-frontmatter.ts