/**
 * 商户端状态管理
 */
import { defineStore } from 'pinia'
import type { 
  MerchantStats, 
  MerchantOrder, 
  MerchantGoods,
  FinanceOverview,
  ShopInfo,
} from '@/typings/merchant'
import { OrderStatus, GoodsStatus } from '@/typings/merchant'
import * as api from '@/pagesMerchant/api'

export const useMerchantStore = defineStore('merchant', {
  state: () => ({
    // 统计数据
    stats: null as MerchantStats | null,
    
    // 订单相关
    orders: [] as MerchantOrder[],
    orderTotal: 0,
    currentOrder: null as MerchantOrder | null,
    
    // 商品相关
    goods: [] as MerchantGoods[],
    goodsTotal: 0,
    currentGoods: null as MerchantGoods | null,
    
    // 财务相关
    financeOverview: null as FinanceOverview | null,
    
    // 店铺相关
    shopInfo: null as ShopInfo | null,
    
    // 加载状态
    loading: false,
  }),

  getters: {
    // 待处理订单数
    pendingOrderCount(state): number {
      return state.orders.filter(o => 
        o.status === OrderStatus.PENDING || o.status === OrderStatus.SHIPPING
      ).length
    },
    
    // 上架商品数
    onlineGoodsCount(state): number {
      return state.goods.filter(g => g.status === GoodsStatus.ON).length
    },
    
    // 库存预警商品数
    lowStockGoodsCount(state): number {
      return state.goods.filter(g => g.stock <= 10).length
    },
  },

  actions: {
    // ==================== 统计 ====================
    async fetchStats() {
      this.loading = true
      try {
        this.stats = await api.getMerchantStats()
      } finally {
        this.loading = false
      }
    },

    // ==================== 订单 ====================
    async fetchOrders(params: { status?: OrderStatus | 'all'; keyword?: string } = {}) {
      this.loading = true
      try {
        const res = await api.getMerchantOrders(params)
        this.orders = res.list
        this.orderTotal = res.total
      } finally {
        this.loading = false
      }
    },

    async fetchOrderDetail(id: string) {
      this.loading = true
      try {
        this.currentOrder = await api.getMerchantOrderDetail(id)
      } finally {
        this.loading = false
      }
    },

    async confirmOrder(id: string) {
      await api.confirmOrder(id)
      // 更新本地状态
      const order = this.orders.find(o => o.id === id)
      if (order) order.status = OrderStatus.SHIPPING
      if (this.currentOrder?.id === id) {
        this.currentOrder.status = OrderStatus.SHIPPING
      }
    },

    async shipOrder(id: string, data: { company: string; trackingNo: string }) {
      await api.shipOrder(id, data)
      const order = this.orders.find(o => o.id === id)
      if (order) order.status = OrderStatus.SHIPPED
      if (this.currentOrder?.id === id) {
        this.currentOrder.status = OrderStatus.SHIPPED
      }
    },

    // ==================== 商品 ====================
    async fetchGoods(params: { status?: GoodsStatus | 'all' | 'lowStock'; keyword?: string } = {}) {
      this.loading = true
      try {
        const res = await api.getMerchantGoodsList(params)
        this.goods = res.list
        this.goodsTotal = res.total
      } finally {
        this.loading = false
      }
    },

    async fetchGoodsDetail(id: string) {
      this.loading = true
      try {
        this.currentGoods = await api.getMerchantGoodsDetail(id)
      } finally {
        this.loading = false
      }
    },

    async updateGoodsStatus(id: string, status: GoodsStatus) {
      await api.updateGoodsStatus(id, status)
      const goods = this.goods.find(g => g.id === id)
      if (goods) goods.status = status
    },

    // ==================== 财务 ====================
    async fetchFinanceOverview() {
      this.loading = true
      try {
        this.financeOverview = await api.getFinanceOverview()
      } finally {
        this.loading = false
      }
    },

    // ==================== 店铺 ====================
    async fetchShopInfo() {
      this.loading = true
      try {
        this.shopInfo = await api.getShopInfo()
      } finally {
        this.loading = false
      }
    },

    async updateShopInfo(data: Partial<ShopInfo>) {
      await api.updateShopInfo(data)
      if (this.shopInfo) {
        Object.assign(this.shopInfo, data)
      }
    },
  },
})