/**
 * 用户收货地址 - 列表与新建
 * GET: 列表（需 userId）
 * POST: 新建（必填 userId, name, phone, detail；省/市/区可选）
 */

import { NextRequest, NextResponse } from 'next/server'
import { query } from '@/lib/db'
import { randomUUID } from 'crypto'

export async function GET(request: NextRequest) {
  try {
    const userId = request.nextUrl.searchParams.get('userId')
    if (!userId) {
      return NextResponse.json({ success: false, message: '缺少 userId' }, { status: 400 })
    }
    const rows = await query(
      `SELECT id, user_id, name, phone, province, city, district, detail, is_default, created_at, updated_at
       FROM user_addresses WHERE user_id = ? ORDER BY is_default DESC, updated_at DESC`,
      [userId]
    ) as any[]
    const list = (rows || []).map((r) => ({
      id: r.id,
      userId: r.user_id,
      name: r.name,
      phone: r.phone,
      province: r.province,
      city: r.city,
      district: r.district,
      detail: r.detail,
      isDefault: !!r.is_default,
      fullAddress: `${r.province}${r.city}${r.district}${r.detail}`,
      createdAt: r.created_at,
      updatedAt: r.updated_at,
    }))
    return NextResponse.json({ success: true, list })
  } catch (e) {
    console.error('[Addresses] GET error:', e)
    return NextResponse.json({ success: false, message: '获取地址列表失败' }, { status: 500 })
  }
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json()
    const { userId, name, phone, province, city, district, detail, isDefault } = body
    if (!userId || !name || !phone || !detail) {
      return NextResponse.json(
        { success: false, message: '缺少必填项：userId, name, phone, detail' },
        { status: 400 }
      )
    }
    const id = randomUUID().replace(/-/g, '').slice(0, 24)
    const p = (v: string | undefined) => (v == null ? '' : String(v).trim())
    if (isDefault) {
      await query('UPDATE user_addresses SET is_default = 0 WHERE user_id = ?', [userId])
    }
    await query(
      `INSERT INTO user_addresses (id, user_id, name, phone, province, city, district, detail, is_default)
       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`,
      [id, userId, name.trim(), phone.trim(), p(province), p(city), p(district), detail.trim(), isDefault ? 1 : 0]
    )
    return NextResponse.json({ success: true, id, message: '添加成功' })
  } catch (e) {
    console.error('[Addresses] POST error:', e)
    return NextResponse.json({ success: false, message: '添加地址失败' }, { status: 500 })
  }
}