name: PR Tests

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review
  workflow_dispatch:

concurrency:
  group: pr-tests-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  web-tests:
    name: Web Build And Test
    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.draft }}
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Set up pnpm
        uses: pnpm/action-setup@v4
        with:
          version: 9

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: pnpm
          cache-dependency-path: web/pnpm-lock.yaml

      - name: Build frontend
        run: make build-frontend

      - name: Run frontend unit tests
        run: make test-frontend

  server-tests:
    name: Server Unit Tests
    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.draft }}
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Set up Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 21
          cache: maven

      - name: Ensure Maven wrapper is executable
        run: chmod +x server/mvnw

      - name: Run backend unit tests
        run: make test-backend

  docs-build:
    name: Docs Build
    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.draft }}
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Detect docs changes
        id: changed
        uses: dorny/paths-filter@v3
        with:
          filters: |
            docs:
              - 'docs/skillhub/**'
              - '.github/workflows/pr-tests.yml'

      - name: Set up Node.js
        if: steps.changed.outputs.docs == 'true'
        uses: actions/setup-node@v4
        with:
          node-version: 24
          cache: npm
          cache-dependency-path: docs/skillhub/package-lock.json

      - name: Install docs dependencies
        if: steps.changed.outputs.docs == 'true'
        run: cd docs/skillhub && npm ci

      - name: Build VitePress site
        if: steps.changed.outputs.docs == 'true'
        run: cd docs/skillhub && npm run build