name: sgeUpdated CI/CD

on:
  push:
    branches:
      - main

jobs:
  deploy:
    # 'ubuntu-latest' is a common name for runners.
    # Check with your Gitea admin if you have a different runner tag.
    runs-on: ubuntu-latest
    
    steps:
      # Gitea automatically checks out your code, so we don't need 'actions/checkout'

      - name: Setup SSH
        run: |
          # Create the .ssh directory
          mkdir -p ~/.ssh/
          
          # Add your private key (from Gitea secrets)
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_rsa
          chmod 600 ~/.ssh/id_rsa
          
          # Add your server's host key to known_hosts to avoid the 'yes/no' prompt
          # This is a critical step for automation
          ssh-keyscan ${{ secrets.SERVER_HOST }} >> ~/.ssh/known_hosts

      - name: Deploy to Server
        # This command runs the entire script on your remote server
        run: |
          ssh ${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }} << 'EOF'
            # Start of remote script
            set -euo pipefail
            
            echo "✅ Connected to server. Navigating to project..."
            cd /home/ubuntu/Bgreen/sgeUpdated
            
            # 1. Fetch the latest code
            git fetch myfork main
            
            # 2. See what files changed between your current version (HEAD) and the new one (origin/main)
            # We add '|| true' in case there are no diffs, which would stop 'set -e'
            CHANGED_FILES=$(git diff --name-only HEAD myfork/main) || true
            
            if [ -z "$CHANGED_FILES" ]; then
              echo "No file changes detected between HEAD and origin/main."
            else
              echo "🪶 Changed files:"
              echo "$CHANGED_FILES"
            fi
            
            # 3. Update the local repository to the new version
            git reset --hard myfork/main
            
            BACKEND_CHANGED=false
            FRONTEND_CHANGED=false
            
            # 4. Check for backend changes (Note the corrected path: no 'sgeUpdated/')
            if echo "$CHANGED_FILES" | grep -q "^sge-backend/"; then
              BACKEND_CHANGED=true
            fi
            
            # 5. Check for frontend changes (Note the corrected path: no 'sgeUpdated/')
            if echo "$CHANGED_FILES" | grep -q "^sge-frontend/"; then
              FRONTEND_CHANGED=true
            fi
            
            
            # Backend section
            if [ "$BACKEND_CHANGED" = true ]; then
              echo "⚡ Backend changes detected. Rebuilding backend..."
              cd sge-backend
              echo "Running Maven build..."
              /opt/apache-maven-3.9.11/bin/mvn clean install -DskipTests
              cd ..
              echo "Rebuilding backend Docker container..."
              docker compose up -d --build bgreen-backend
            else
              echo "✅ No backend changes."
            fi
            
            # Frontend section
            if [ "$FRONTEND_CHANGED" = true ]; then
              echo "⚡ Frontend changes detected. Rebuilding frontend..."
              cd sge-frontend
              echo "Running npm install and build..."
              npm install
              npm run build
              cd ..
              echo "Rebuilding frontend Docker container..."
              docker compose up -d --build bgreen-frontend
            else
              echo "✅ No frontend changes."
            fi
            
            # This is your final 'build all' condition
            # if [ "$BACKEND_CHANGED" = false ] && [ "$FRONTEND_CHANGED" = false ]; then
            #   echo "♻️ No source changes detected. Ensuring all containers are up."
            #   docker compose up -d
            # fi
            
            echo "✅ Deployment script finished."
          EOF
          # End of remote script