feat(domain): add income calculation with commission support

store/wallet.ts

@@ -1,6 +1,8 @@
 import { create } from "zustand"
+import { calculateOrderIncome } from "@/lib/domain/income"
 import { generateId } from "@/lib/id"
 import { mockTransactions, walletBalance } from "@/lib/mock"
+import { useShopStore } from "@/store/shops"
 import type { WalletTransaction } from "@/lib/types"
 
 interface WalletState {
@@ -10,7 +12,7 @@ interface WalletState {
   withdraw: (amount: number) => void
   deductBalance: (orderId: string, amount: number) => boolean
   refundPayment: (orderId: string, amount: number) => boolean
-  addIncome: (orderId: string, amount: number) => void
+  addIncome: (orderId: string, totalPrice: number, shopId?: string) => void
   addTransaction: (transaction: WalletTransaction) => void
 }
 
@@ -109,8 +111,8 @@ export const useWalletStore = create<WalletState>((set, get) => ({
 
     return true
   },
-  addIncome: (orderId, amount) => {
-    if (!Number.isFinite(amount) || amount <= 0) return
+  addIncome: (orderId, totalPrice, shopId) => {
+    if (!Number.isFinite(totalPrice) || totalPrice <= 0) return
 
     const state = get()
     const exists = state.transactions.some(
@@ -118,15 +120,19 @@ export const useWalletStore = create<WalletState>((set, get) => ({
     )
     if (exists) return
 
+    const shop = shopId
+      ? useShopStore.getState().shops.find((item) => item.id === shopId)
+      : undefined
+    const { income, commissionLabel } = calculateOrderIncome(totalPrice, shop)
+
     const now = new Date().toISOString()
-    const income = Number((amount * 0.85).toFixed(2))
     set((prev) => ({
       transactions: [
         {
           id: generateId("tx"),
           type: "income",
           amount: income,
-          description: `订单 ${orderId} 收入（扣除15%抽成）`,
+          description: `订单 ${orderId} 收入（${commissionLabel}）`,
           createdAt: now,
         },
         ...prev.transactions,