#!/bin/bash

# Script to trigger backend deployment on the remote server
# Usage: ./deploy_remote.sh

set -e

# Configuration
SERVER_IP="147.45.152.129"
SERVER_USER="root"
REMOTE_DIR="~/mnemo_cards_backend"
BUILD_SCRIPT="./build_app.sh"

# Colors
GREEN='\033[0;32m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

echo -e "${BLUE}[INFO]${NC} Starting backend deployment on ${SERVER_USER}@${SERVER_IP}..."

# Sync source code
echo -e "${BLUE}[INFO]${NC} Syncing source code to ${SERVER_USER}@${SERVER_IP}..."

# Sync common packages first
rsync -avz --delete --exclude '.*' --exclude 'build' --exclude 'doc' \
    mnemo_cards_common \
    mnemo_cards_common_backend \
    "${SERVER_USER}@${SERVER_IP}:~/"

# Sync backend project
rsync -avz --delete --exclude '.*' --exclude 'build' --exclude 'server.exe' \
    mnemo_cards_backend \
    "${SERVER_USER}@${SERVER_IP}:~/"

echo -e "${BLUE}[INFO]${NC} Triggering remote build..."

# Execute build directly via SSH
ssh -t "${SERVER_USER}@${SERVER_IP}" << 'ENDSSH'
  set -e -v
  
  cd ~/mnemo_cards_backend
  
  # Get dependencies and compile
  echo "📦 Getting dependencies..."
  dart pub get
  
  echo "🔨 Compiling server..."
  dart compile exe --verbose lib/main.dart -o server_build.exe
  
  # Stop service
  echo "🛑 Stopping service..."
  sudo systemctl stop mnemo_cards_server || true
  
  # Update service file
  echo "⚙️ Updating service configuration..."
  sudo chmod 777 mnemo_cards_server.service
  sudo cp mnemo_cards_server.service /etc/systemd/system/
  
  # Update executable
  echo "🔄 Replacing executable..."
  sudo cp server_build.exe server.exe
  rm server_build.exe
  
  # Check certificates and configure mode
  if [ -d "/etc/letsencrypt/live/api.mnemo-cards.online" ]; then
      echo "✅ Let's Encrypt certificates found. Configuring dual mode..."
      sudo sed -i 's|ExecStart=/root/mnemo_cards_backend/server.exe.*|ExecStart=/root/mnemo_cards_backend/server.exe --dual --certs /etc/letsencrypt/live/api.mnemo-cards.online -a 0.0.0.0 -p 8081|' /etc/systemd/system/mnemo_cards_server.service
  else
      echo "⚠️ No certificates found. Configuring HTTP mode..."
      sudo sed -i 's|ExecStart=/root/mnemo_cards_backend/server.exe.*|ExecStart=/root/mnemo_cards_backend/server.exe -a 0.0.0.0 -p 8081|' /etc/systemd/system/mnemo_cards_server.service
  fi
  
  # Reload and restart
  echo "🚀 Restarting service..."
  sudo systemctl daemon-reload
  sudo systemctl start mnemo_cards_server
  
  # Check status
  sleep 2
  systemctl status mnemo_cards_server --no-pager
  
  # Гарантируем, что nginx запущен (важно для работы code.mnemo-cards.online)
  echo "🔍 Проверяем статус nginx..."
  if sudo systemctl is-active --quiet nginx; then
      echo "✅ nginx уже запущен"
      # Перезагружаем конфигурацию на всякий случай
      if sudo nginx -t 2>/dev/null; then
          sudo systemctl reload nginx
          echo "✅ Конфигурация nginx перезагружена"
      fi
  else
      echo "⚠️  nginx не запущен, запускаем..."
      if sudo nginx -t 2>/dev/null; then
          sudo systemctl start nginx
          sleep 2
          if sudo systemctl is-active --quiet nginx; then
              echo "✅ nginx успешно запущен"
          else
              echo "❌ Ошибка: не удалось запустить nginx!"
              sudo systemctl status nginx --no-pager || true
          fi
      else
          echo "❌ Ошибка в конфигурации nginx!"
          sudo nginx -t || true
      fi
  fi
ENDSSH

echo -e "${GREEN}[SUCCESS]${NC} Backend deployment triggered successfully!"