import { NextRequest, NextResponse } from 'next/server'
import { prisma } from '@/lib/prisma'
import { hashPassword } from '@/lib/auth'

export async function POST(request: NextRequest) {
  try {
    const { email, username, password, name, phone, address } = await request.json()

    if (!email || !username || !password) {
      return NextResponse.json(
        { message: '邮箱、用户名和密码不能为空' },
        { status: 400 }
      )
    }

    // 检查邮箱是否已存在
    const existingUserByEmail = await prisma.user.findUnique({
      where: { email }
    })

    if (existingUserByEmail) {
      return NextResponse.json(
        { message: '该邮箱已被注册' },
        { status: 400 }
      )
    }

    // 检查用户名是否已存在
    const existingUserByUsername = await prisma.user.findUnique({
      where: { username }
    })

    if (existingUserByUsername) {
      return NextResponse.json(
        { message: '该用户名已被使用' },
        { status: 400 }
      )
    }

    // 加密密码
    const hashedPassword = await hashPassword(password)

    // 创建用户
    const user = await prisma.user.create({
      data: {
        email,
        username,
        password: hashedPassword,
        name: name || null,
        phone: phone || null,
        address: address || null,
        isAdmin: false
      }
    })

    // 返回用户信息（不包含密码）
    const { password: _, ...userWithoutPassword } = user

    return NextResponse.json({
      message: '注册成功',
      user: userWithoutPassword
    }, { status: 201 })
  } catch (error) {
    console.error('Register error:', error)
    return NextResponse.json(
      { message: '服务器错误' },
      { status: 500 }
    )
  }
}