name: sgeUpdated CI/CD

on:
  push:
    branches:
      - main     # Trigger when code is pushed/merged into main
  workflow_dispatch:  # Allow manual trigger if needed

concurrency:
  group: sgeupdated-deploy-${{ github.ref }}
  cancel-in-progress: true

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 2   # Needed to compare the last two commits

      - name: Detect changed files
        id: detect
        run: |
          echo "🔍 Checking which files changed..."
          FRONTEND_CHANGED=false
          BACKEND_CHANGED=false

          # Get list of changed files between the latest two commits
          CHANGED=$(git diff --name-only HEAD^ HEAD || true)

          echo "$CHANGED" | grep -q '^sgeUpdated/sge-frontend/' && FRONTEND_CHANGED=true || true
          echo "$CHANGED" | grep -q '^sgeUpdated/sge-backend/' && BACKEND_CHANGED=true || true

          echo "frontend=$FRONTEND_CHANGED" >> $GITHUB_OUTPUT
          echo "backend=$BACKEND_CHANGED" >> $GITHUB_OUTPUT

          echo "✅ Frontend changed: $FRONTEND_CHANGED"
          echo "✅ Backend changed:  $BACKEND_CHANGED"

      - name: Deploy Backend
        if: ${{ steps.detect.outputs.backend == 'true' }}
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script_stop: true
          script: |
            set -euo pipefail

            echo "🚀 Starting backend deployment..."
            cd /home/ubuntu/Bgreen/sgeUpdated
            git fetch origin main
            git reset --hard origin/main

            echo "⚙️ Rebuilding Backend..."
            cd sgeUpdated/sge-backend
            /opt/apache-maven-3.9.11/bin/mvn clean install -DskipTests
            cd ../..
            docker compose up -d --build bgreen-backend

            echo "✅ Backend deployment complete!"
            docker ps --format 'table {{.Names}}\t{{.Status}}\t{{.Ports}}'

      - name: Deploy Frontend
        if: ${{ steps.detect.outputs.frontend == 'true' }}
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script_stop: true
          script: |
            set -euo pipefail

            echo "🚀 Starting frontend deployment..."
            cd /home/ubuntu/Bgreen/sgeUpdated
            git fetch origin main
            git reset --hard origin/main

            echo "⚙️ Rebuilding Frontend..."
            cd sgeUpdated/sge-frontend
            # Uncomment below if needed:
            # npm ci
            # npm run build
            cd ../..
            docker compose up -d --build bgreen-frontend

            echo "✅ Frontend deployment complete!"
            docker ps --format 'table {{.Names}}\t{{.Status}}\t{{.Ports}}'