name: sgeUpdated CI/CD

on:
  push:
    branches:
      - main
  workflow_dispatch:

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

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Deploy over SSH
        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

            # Go to your repo
            cd /home/ubuntu/Bgreen/sgeUpdated

            echo "📦 Fetching latest code from your fork..."
            git fetch myfork main

            # Detect which files changed in the last commit
            CHANGED_FILES=$(git diff --name-only HEAD HEAD~1)
            echo "🪶 Changed files:"
            echo "$CHANGED_FILES"

            echo "🔄 Resetting to your fork's main branch..."
            git reset --hard myfork/main

            BACKEND_CHANGED=false
            FRONTEND_CHANGED=false

            # Check if backend folder changed
            if echo "$CHANGED_FILES" | grep -q "^sgeUpdated/sge-backend/"; then
              BACKEND_CHANGED=true
            fi

            # Check if frontend folder changed
            if echo "$CHANGED_FILES" | grep -q "^sgeUpdated/sge-frontend/"; then
              FRONTEND_CHANGED=true
            fi

            ############################
            # Docker readiness check
            ############################
            echo "⏳ Checking Docker status before rebuild..."
            sleep 5
            docker ps -a || true

            ############################
            # Backend section
            ############################
            if [ "$BACKEND_CHANGED" = true ]; then
              echo "⚡ Backend changes detected."
              echo "Running Maven build for backend..."
              cd /home/ubuntu/Bgreen/sgeUpdated/sge-backend
              /opt/apache-maven-3.9.11/bin/mvn clean install -DskipTests
              cd /home/ubuntu/Bgreen
              echo "🔁 Rebuilding backend container..."
              docker compose -f docker-compose.yml up -d --build bgreen-backend || {
                echo "⚠️ Docker rebuild failed once, retrying..."
                sleep 5
                docker compose -f docker-compose.yml up -d --build bgreen-backend
              }
            else
              echo "✅ No backend changes."
            fi

            ############################
            # Frontend section
            ############################
            if [ "$FRONTEND_CHANGED" = true ]; then
              echo "⚡ Frontend changes detected."
              cd /home/ubuntu/Bgreen/sgeUpdated/sge-frontend
              echo "Installing npm dependencies and building..."
              npm install
              npm run build
              cd /home/ubuntu/Bgreen
              echo "🔁 Rebuilding frontend container..."
              docker compose -f docker-compose.yml up -d --build bgreen-frontend || {
                echo "⚠️ Docker rebuild failed once, retrying..."
                sleep 5
                docker compose -f docker-compose.yml up -d --build bgreen-frontend
              }
            else
              echo "✅ No frontend changes."
            fi

            ############################
            # If no changes at all
            ############################
            if [ "$BACKEND_CHANGED" = false ] && [ "$FRONTEND_CHANGED" = false ]; then
              echo "♻️ No source changes detected. Restarting containers..."
              docker compose -f /home/ubuntu/Bgreen/docker-compose.yml up -d
            fi

            echo "✅ Deployment check complete."