# GitHub Actions Workflow for Frontend Deployment to GitHub Pages
# Automatically deploys the React frontend when changes are pushed to main

name: Deploy Frontend to GitHub Pages

on:
  push:
    branches: [main]
    paths:
      - 'frontend/**'
      - '.github/workflows/deploy-frontend.yml'
  workflow_dispatch: # Allow manual deployment

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: read
  pages: write
  id-token: write

# Allow only one concurrent deployment
concurrency:
  group: 'pages'
  cancel-in-progress: true

jobs:
  build:
    name: Build Frontend
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

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

      - name: Build project
        working-directory: frontend
        run: npm run build
        env:
          VITE_API_BASE_URL: ${{ vars.VITE_API_BASE_URL || 'http://localhost:8000' }}

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: frontend/dist

  deploy:
    name: Deploy to GitHub Pages
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}

    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4