// app/api/user/update/route.ts
// 更新用户信息（头像、昵称等）

import { NextRequest, NextResponse } from 'next/server'
import { getDb } from '@/lib/db'

export async function POST(req: NextRequest) {
  try {
    const { userId, nickname, avatar, phone, wechatId, address } = await req.json()
    
    if (!userId) {
      return NextResponse.json({ error: '缺少用户ID' }, { status: 400 })
    }
    
    const db = await getDb()
    
    // 构建更新字段
    const updates: string[] = []
    const values: any[] = []
    
    if (nickname !== undefined) {
      updates.push('nickname = ?')
      values.push(nickname)
    }
    if (avatar !== undefined) {
      updates.push('avatar = ?')
      values.push(avatar)
    }
    if (phone !== undefined) {
      updates.push('phone = ?')
      values.push(phone)
    }
    if (wechatId !== undefined) {
      updates.push('wechat_id = ?')
      values.push(wechatId)
    }
    if (address !== undefined) {
      updates.push('address = ?')
      values.push(address)
    }
    
    if (updates.length === 0) {
      return NextResponse.json({ error: '没有要更新的字段' }, { status: 400 })
    }
    
    updates.push('updated_at = NOW()')
    values.push(userId)
    
    const sql = `UPDATE users SET ${updates.join(', ')} WHERE id = ?`
    await db.execute(sql, values)
    
    // 返回更新后的用户信息
    const [rows] = await db.execute(
      'SELECT id, nickname, avatar, phone, wechat_id, address FROM users WHERE id = ?',
      [userId]
    )
    
    const user = (rows as any[])[0]
    
    return NextResponse.json({
      success: true,
      user
    })
    
  } catch (error) {
    console.error('[User Update] Error:', error)
    return NextResponse.json(
      { error: '更新用户信息失败' },
      { status: 500 }
    )
  }
}