name: Check Redirects

on:
  pull_request:
    branches:
      - main
    paths:
      - files/**/_redirects.txt
      - files/**/index.html
      - .github/workflows/pr-check_redirects.yml

jobs:
  check_redirects:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - uses: actions/checkout@v2
        with:
          repository: mdn/content
          path: mdn/content

      - name: Setup Node.js environment
        uses: actions/setup-node@v2.1.4
        with:
          node-version: "12"

      - name: Cache node_modules
        uses: actions/cache@v2.1.4
        id: cached-node_modules
        with:
          path: |
            ${{ github.workspace }}/mdn/content/node_modules
          key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}

      - name: Install all yarn packages
        if: steps.cached-node_modules.outputs.cache-hit != 'true'
        working-directory: ${{ github.workspace }}/mdn/content
        run: |
          yarn --frozen-lockfile

      - name: Check redirects file(s)
        env:
          CONTENT_ROOT: ${{ github.workspace }}/mdn/content/files
          CONTENT_TRANSLATED_ROOT: ${{ github.workspace }}/files
        working-directory: ${{ github.workspace }}/mdn/content
        run: |
          yarn content validate-redirects --strict