name: Build, unit test and lint branch

on:
  pull_request:
    branches:
      - '**'
      - '!release/*'

jobs:
  install-and-build:
    name: Install & Build
    runs-on: blacksmith-2vcpu-ubuntu-2204
    env:
      NODE_OPTIONS: '--max-old-space-size=4096'
    outputs:
      frontend_changed: ${{ steps.paths-filter.outputs.frontend == 'true' }}
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          ref: refs/pull/${{ github.event.pull_request.number }}/merge

      - name: Check for frontend changes
        uses: dorny/paths-filter@v3
        id: paths-filter
        with:
          filters: |
            frontend:
              - packages/frontend/**
              - packages/@n8n/design-system/**
              - packages/@n8n/chat/**
              - packages/@n8n/codemirror-lang/**
              - .bundlemonrc.json
              - .github/workflows/ci-pull-requests.yml

      - name: Setup Environment and Build Project
        uses: ./.github/actions/setup-and-build
        with:
          node-version: 22.x
          enable-caching: true

      - name: Run formatcheck
        run: pnpm format:check

      - name: Run typecheck
        run: pnpm typecheck

      - name: Upload Frontend Build Artifacts
        if: steps.paths-filter.outputs.frontend == 'true'
        uses: actions/upload-artifact@v4
        with:
          name: editor-ui-dist
          path: packages/frontend/editor-ui/dist/
          retention-days: 1

  bundle-size-check:
    name: Bundle Size Check
    needs: install-and-build
    if: needs.install-and-build.outputs.frontend_changed == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          ref: refs/pull/${{ github.event.pull_request.number }}/merge

      - name: Setup pnpm CLI
        uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0

      - name: Setup Node.js
        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
        with:
          node-version: '22.x'
          cache: pnpm

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

      - name: Download Frontend Build Artifacts
        uses: actions/download-artifact@v4
        with:
          name: editor-ui-dist
          path: packages/frontend/editor-ui/dist/

      - name: BundleMon
        uses: lironer/bundlemon-action@v1.2.0

  unit-test:
    name: Unit tests
    uses: ./.github/workflows/units-tests-reusable.yml
    needs: install-and-build
    with:
      ref: refs/pull/${{ github.event.pull_request.number }}/merge
      cacheKey: ${{ github.sha }}-base:build
      collectCoverage: true
    secrets:
      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

  lint:
    name: Lint
    uses: ./.github/workflows/linting-reusable.yml
    needs: install-and-build
    with:
      ref: refs/pull/${{ github.event.pull_request.number }}/merge
      cacheKey: ${{ github.sha }}-base:build