import { NextRequest, NextResponse } from "next/server"
import { getServerSession } from "next-auth"
import { authOptions } from "@/lib/auth"
import { prisma } from "@/lib/prisma"

// 检查是否为管理员
async function checkAdmin(userId: string) {
  const user = await prisma.user.findUnique({
    where: { id: userId },
    select: { isAdmin: true }
  })
  return user?.isAdmin === true
}

// 获取登录日志
export async function GET(req: NextRequest) {
  try {
    const session = await getServerSession(authOptions)
    
    if (!session?.user?.id) {
      return NextResponse.json({ error: "未授权" }, { status: 401 })
    }

    // 检查管理员权限
    const isAdmin = await checkAdmin(session.user.id)
    if (!isAdmin) {
      return NextResponse.json({ error: "无权限访问" }, { status: 403 })
    }

    const { searchParams } = new URL(req.url)
    const limit = parseInt(searchParams.get("limit") || "100")
    const page = parseInt(searchParams.get("page") || "1")
    const skip = (page - 1) * limit

    // 获取登录日志总数
    const total = await prisma.loginLog.count()

    // 获取登录日志列表
    const logs = await prisma.loginLog.findMany({
      orderBy: {
        createdAt: 'desc',
      },
      take: limit,
      skip,
      select: {
        id: true,
        userId: true,
        email: true,
        userName: true,
        ip: true,
        userAgent: true,
        success: true,
        message: true,
        createdAt: true,
      }
    })

    return NextResponse.json({
      logs,
      pagination: {
        total,
        page,
        limit,
        totalPages: Math.ceil(total / limit),
      }
    })
  } catch (error) {
    console.error("获取登录日志失败:", error)
    return NextResponse.json(
      { error: "获取登录日志失败" },
      { status: 500 }
    )
  }
}