import Taro from '@tarojs/taro'
import type { DesignItem, OrderItem } from '../types'

const DESIGN_KEY = 'smart_design_list'
const ORDER_KEY = 'smart_order_list'
const USER_KEY = 'smart_user_info'
const THEME_KEY = 'smart_theme'

/** 获取设计清单 */
export const getDesignList = (): DesignItem[] => {
  try {
    return Taro.getStorageSync(DESIGN_KEY) || []
  } catch {
    return []
  }
}

/** 保存设计清单 */
export const setDesignList = (list: DesignItem[]) => {
  Taro.setStorageSync(DESIGN_KEY, list)
}

/** 获取订单列表 */
export const getOrderList = (): OrderItem[] => {
  try {
    return Taro.getStorageSync(ORDER_KEY) || []
  } catch {
    return []
  }
}

/** 保存订单列表 */
export const setOrderList = (list: OrderItem[]) => {
  Taro.setStorageSync(ORDER_KEY, list)
}

/** 添加设计清单条目 */
export const addDesign = (product: any, count: number): DesignItem => {
  const list = getDesignList()
  const item: DesignItem = {
    id: 'DSG' + Date.now(),
    productId: product.id,
    productName: product.name,
    productIcon: product.icon,
    unitPrice: product.price,
    count,
    status: 'undesigned',
    createdAt: new Date().toISOString().slice(0, 10)
  }
  setDesignList([...list, item])
  return item
}

/** 更新设计清单条目 */
export const updateDesign = (id: string, patch: Partial<DesignItem>) => {
  const list = getDesignList()
  const idx = list.findIndex(d => d.id === id)
  if (idx === -1) return
  list[idx] = { ...list[idx], ...patch }
  setDesignList(list)
}

/** 设计转订单 */
export const designToOrder = (designId: string): OrderItem | null => {
  const dList = getDesignList()
  const oList = getOrderList()
  const design = dList.find(d => d.id === designId)
  if (!design) return null

  const order: OrderItem = {
    id: 'ORD' + Date.now().toString().slice(-9),
    productName: design.productName,
    productIcon: design.productIcon,
    statusCode: 'pending',
    date: new Date().toLocaleString('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' }).replace(/\//g, '-'),
    price: '¥' + (design.unitPrice * design.count).toFixed(2),
    count: design.count,
    sku: `${design.productName} × ${design.count}`
  }

  // 更新 design 状态
  const dIdx = dList.findIndex(d => d.id === designId)
  if (dIdx !== -1) {
    dList[dIdx].status = 'ordered'
    dList[dIdx].orderId = order.id
  }

  setDesignList(dList)
  setOrderList([order, ...oList])
  return order
}

/** 用户数据 */
export const getUserInfo = () => {
  try {
    return Taro.getStorageSync(USER_KEY)
  } catch {
    return null
  }
}

export const setUserInfo = (info: any) => {
  Taro.setStorageSync(USER_KEY, info)
}

/** 主题 */
export type ThemeMode = 'light' | 'dark'

export const getTheme = (): ThemeMode => {
  try {
    return Taro.getStorageSync(THEME_KEY) || 'light'
  } catch {
    return 'light'
  }
}

export const setTheme = (theme: ThemeMode) => {
  Taro.setStorageSync(THEME_KEY, theme)
}