ci-frontend.yml

name: CI — Frontend

# Triggers on pushes and PRs that touch the frontend directory.
# Installs dependencies, builds Next.js (standalone output), and uploads a deployment artifact.
#
# Artifact produced: frontend-drop — consumed by cd-frontend.yml
#
# NOTE: next.config.ts must have output: 'standalone' for this workflow to produce a correct artifact.

on:
  push:
    branches: [main]
    paths: ['frontend/**']
  pull_request:
    branches: [main]
    paths: ['frontend/**']

env:
  NODE_VERSION: '20.x'

jobs:
  build:
    name: Install, Build & Package
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        run: npm ci
        working-directory: frontend

      - name: Build Next.js
        run: npm run build
        working-directory: frontend
        env:
          # Placeholder values satisfy build-time env var requirements.
          # Actual values are injected at runtime via App Service app settings.
          NEXTAUTH_URL: 'http://placeholder'
          NEXTAUTH_SECRET: 'placeholder-build-secret-32-chars!!'
          KEYCLOAK_CLIENT_ID: placeholder
          KEYCLOAK_CLIENT_SECRET: placeholder
          KEYCLOAK_ISSUER: 'https://placeholder.example.com/realms/placeholder'
          NEXT_PUBLIC_API_BASE_URL: 'https://placeholder'

      # Next.js standalone output does not include public/ or .next/static/ automatically.
      - name: Copy public/ and static/ into standalone output
        run: |
          cp -r frontend/public frontend/.next/standalone/
          cp -r frontend/.next/static frontend/.next/standalone/.next/static

      - name: Upload frontend-drop
        uses: actions/upload-artifact@v4
        with:
          name: frontend-drop
          path: frontend/.next/standalone