# In the event that lint is broken in mainline (e.g. `develop`, the only mainline branch that has linting code right now),
# this workflow is expected to pass even if lint.all.yml fails.

name: ESLint Changed Files

on:
  pull_request:
    branches:
      - develop

jobs:
  lint:

    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [16.x]

    steps:
      - name: Fetch PR base ref
        uses: actions/checkout@v3
        with:
          ref: ${{ github.base_ref }}
      - name: Checkout PR merge ref
        uses: actions/checkout@v3
        with:
          ref: ${{ github.ref }}
      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node-version }}
      - name: Cache node modules
        uses: actions/cache@v3
        id: cache_node_modules
        with:
          # caching node_modules
          path: '**/node_modules'
          key: node_modules-${{ hashFiles('yarn.lock') }}
      - name: Install dependencies
        if: steps.cache_node_modules.outputs.cache-hit != 'true'
        run: yarn install
        env:
          CI: true
      - name: Buil all
        run: yarn buildall
      - name: Run eslint
        run: |
          changed_files="$(git diff --name-only origin/${{ github.base_ref }})"
          if (( $? )); then
            echo "Failed diff against origin/${{ github.base_ref }}"
            exit 1
          else
            echo "Changed files:"
            echo "$changed_files"
            echo
            echo "Running eslint"
            echo
            npx eslint --no-error-on-unmatched-pattern $changed_files
          fi