#!/bin/bash

set -e

echo "🚀 轻量级监控系统配置"
echo "========================"

# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

# 检查 Sentry 配置
check_sentry() {
    echo -e "${YELLOW}📋 检查 Sentry 配置...${NC}"
    
    if [ -z "$NEXT_PUBLIC_SENTRY_DSN" ]; then
        echo -e "${RED}❌ Sentry DSN 未配置${NC}"
        echo "请在 .env.production 中设置 NEXT_PUBLIC_SENTRY_DSN"
        return 1
    fi
    
    echo -e "${GREEN}✅ Sentry 已配置${NC}"
}

# 配置 Google Analytics
setup_google_analytics() {
    echo -e "${YELLOW}📋 配置 Google Analytics...${NC}"
    
    echo "请输入 Google Analytics 测量 ID："
    read -p "GA Measurement ID (格式: G-XXXXXXXXXX): " ga_id
    
    if [ -z "$ga_id" ]; then
        echo -e "${YELLOW}⚠️  跳过 Google Analytics 配置${NC}"
        return 0
    fi
    
    # 更新环境变量
    if [ -f ".env.production" ]; then
        if grep -q "NEXT_PUBLIC_GA_MEASUREMENT_ID" .env.production; then
            sed -i.bak "s/NEXT_PUBLIC_GA_MEASUREMENT_ID=.*/NEXT_PUBLIC_GA_MEASUREMENT_ID=$ga_id/" .env.production
        else
            echo "NEXT_PUBLIC_GA_MEASUREMENT_ID=$ga_id" >> .env.production
        fi
        echo -e "${GREEN}✅ Google Analytics 已配置${NC}"
    else
        echo -e "${RED}❌ 找不到 .env.production 文件${NC}"
        return 1
    fi
}

# 配置 UptimeRobot
setup_uptime_robot() {
    echo -e "${YELLOW}📋 配置 UptimeRobot...${NC}"
    echo ""
    echo "请按照以下步骤配置 UptimeRobot："
    echo ""
    echo "1. 访问 https://uptimerobot.com/"
    echo "2. 注册免费账号"
    echo "3. 创建新的 Monitor："
    echo "   - Monitor Type: HTTP(s)"
    echo "   - URL: https://www.novalon.cn"
    echo "   - Monitoring Interval: 5 minutes"
    echo "4. 添加 Alert Contacts:"
    echo "   - Email: ops@novalon.cn"
    echo ""
    read -p "配置完成后按 Enter 继续..."
}

# 创建健康检查端点
create_health_check() {
    echo -e "${YELLOW}📋 创建健康检查端点...${NC}"
    
    # 检查是否已存在
    if [ -d "src/app/api/health" ]; then
        echo -e "${GREEN}✅ 健康检查端点已存在${NC}"
        return 0
    fi
    
    mkdir -p src/app/api/health
    
    cat > src/app/api/health/route.ts << 'EOF'
import { NextResponse } from 'next/server';

export async function GET() {
  try {
    // 检查数据库连接
    const dbConnected = await checkDatabaseConnection();
    
    // 获取系统信息
    const uptime = process.uptime();
    
    return NextResponse.json({
      status: 'healthy',
      timestamp: new Date().toISOString(),
      version: process.env.npm_package_version || '1.0.0',
      checks: {
        database: dbConnected ? 'connected' : 'disconnected',
        uptime: Math.floor(uptime)
      }
    });
  } catch (error) {
    return NextResponse.json({
      status: 'unhealthy',
      timestamp: new Date().toISOString(),
      error: 'Health check failed'
    }, { status: 500 });
  }
}

async function checkDatabaseConnection(): Promise<boolean> {
  try {
    // 这里添加实际的数据库连接检查逻辑
    return true;
  } catch {
    return false;
  }
}
EOF
    
    echo -e "${GREEN}✅ 健康检查端点已创建${NC}"
}

# 配置 Sentry 告警
setup_sentry_alerts() {
    echo -e "${YELLOW}📋 配置 Sentry 告警...${NC}"
    echo ""
    echo "请按照以下步骤配置 Sentry 告警："
    echo ""
    echo "1. 登录 Sentry Dashboard"
    echo "2. 进入 Settings → Alerts"
    echo "3. 创建新的 Alert Rule："
    echo "   - Issue: Critical Errors"
    echo "   - Environment: Production"
    echo "   - Frequency: Immediately"
    echo "   - Email: ops@novalon.cn"
    echo ""
    read -p "配置完成后按 Enter 继续..."
}

# 显示配置摘要
show_summary() {
    echo ""
    echo -e "${GREEN}========================================${NC}"
    echo -e "${GREEN}🎉 轻量级监控配置完成！${NC}"
    echo -e "${GREEN}========================================${NC}"
    echo ""
    echo "📊 监控组件："
    echo ""
    echo -e "  • Sentry:        ${GREEN}✅${NC} 错误监控和性能追踪"
    echo -e "  • UptimeRobot:   ${YELLOW}⚠️  需要手动配置${NC} 可用性监控"
    echo -e "  • Google Analytics: ${YELLOW}⚠️  需要手动配置${NC} 访问统计"
    echo -e "  • Health Check:   ${GREEN}✅${NC} 内部服务状态"
    echo -e "  • Email Alerts:   ${GREEN}✅${NC} ops@novalon.cn"
    echo ""
    echo "📋 下一步操作："
    echo ""
    echo "  1. 配置 UptimeRobot: https://uptimerobot.com/"
    echo "  2. 配置 Google Analytics: https://analytics.google.com/"
    echo "  3. 配置 Sentry 告警: Sentry Dashboard → Settings → Alerts"
    echo ""
    echo "📚 详细文档: docs/LIGHTWEIGHT_MONITORING.md"
    echo ""
}

# 主函数
main() {
    echo ""
    
    # 检查 Sentry
    check_sentry
    
    # 配置 Google Analytics
    echo ""
    read -p "是否配置 Google Analytics? (y/n): " setup_ga
    if [[ $setup_ga =~ ^[Yy]$ ]]; then
        setup_google_analytics
    fi
    
    # 配置 UptimeRobot
    echo ""
    read -p "是否配置 UptimeRobot? (y/n): " setup_uptime
    if [[ $setup_uptime =~ ^[Yy]$ ]]; then
        setup_uptime_robot
    fi
    
    # 创建健康检查
    create_health_check
    
    # 配置 Sentry 告警
    setup_sentry_alerts
    
    # 显示摘要
    show_summary
}

# 运行主函数
main