name: Reusable units test workflow

on:
  workflow_call:
    inputs:
      ref:
        description: GitHub ref to test.
        required: false
        type: string
        default: master
      nodeVersion:
        description: Version of node to use.
        required: false
        type: string
        default: 20.x
      cacheKey:
        description: Cache key for modules and build artifacts.
        required: false
        default: ''
        type: string
      collectCoverage:
        required: false
        default: false
        type: boolean
    secrets:
      CODECOV_TOKEN:
        description: 'Codecov upload token.'
        required: false

jobs:
  unit-test:
    name: Unit tests
    runs-on: ubuntu-latest
    env:
      COVERAGE_ENABLED: ${{ inputs.collectCoverage }}
    steps:
      - uses: actions/checkout@v4.1.1
        with:
          repository: n8n-io/n8n
          ref: ${{ inputs.ref }}

      - run: corepack enable
      - name: Use Node.js ${{ inputs.nodeVersion }}
        uses: actions/setup-node@v4.0.2
        with:
          node-version: ${{ inputs.nodeVersion }}
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Setup build cache
        if: inputs.collectCoverage != true
        uses: rharkor/caching-for-turbo@v1.5

      - name: Build
        if: ${{ inputs.cacheKey == '' }}
        run: pnpm build

      - name: Restore cached build artifacts
        if: ${{ inputs.cacheKey != '' }}
        uses: actions/cache/restore@v4.0.0
        with:
          path: ./packages/**/dist
          key: ${{ inputs.cacheKey }}

      - name: Test Backend
        run: pnpm test:backend

      - name: Test Nodes
        run: pnpm test:nodes

      - name: Test Frontend
        run: pnpm test:frontend

      - name: Upload coverage to Codecov
        if: inputs.collectCoverage
        uses: codecov/codecov-action@v4.5.0
        with:
          token: ${{ secrets.CODECOV_TOKEN }}