📖 ERP：增加 ERP 首页的统计

src/api/erp/statistics/purchase/index.ts

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+import request from '@/config/axios'
+
+// ERP 采购全局统计 VO
+export interface ErpPurchaseSummaryRespVO {
+  todayPrice: number // 今日采购金额
+  yesterdayPrice: number // 昨日采购金额
+  monthPrice: number // 本月采购金额
+  yearPrice: number // 今年采购金额
+}
+
+// ERP 采购时间段统计 VO
+export interface ErpPurchaseTimeSummaryRespVO {
+  time: string // 时间
+  price: number // 采购金额
+}
+
+// ERP 采购统计 API
+export const PurchaseStatisticsApi = {
+  // 获得采购统计
+  getPurchaseSummary: async (): Promise<ErpPurchaseSummaryRespVO> => {
+    return await request.get({ url: `/erp/purchase-statistics/summary` })
+  },
+
+  // 获得采购时间段统计
+  getPurchaseTimeSummary: async (): Promise<ErpPurchaseTimeSummaryRespVO[]> => {
+    return await request.get({ url: `/erp/purchase-statistics/time-summary` })
+  }
+}

src/api/erp/statistics/sale/index.ts

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+import request from '@/config/axios'
+
+// ERP 销售全局统计 VO
+export interface ErpSaleSummaryRespVO {
+  todayPrice: number // 今日销售金额
+  yesterdayPrice: number // 昨日销售金额
+  monthPrice: number // 本月销售金额
+  yearPrice: number // 今年销售金额
+}
+
+// ERP 销售时间段统计 VO
+export interface ErpSaleTimeSummaryRespVO {
+  time: string // 时间
+  price: number // 销售金额
+}
+
+// ERP 销售统计 API
+export const SaleStatisticsApi = {
+  // 获得销售统计
+  getSaleSummary: async (): Promise<ErpSaleSummaryRespVO> => {
+    return await request.get({ url: `/erp/sale-statistics/summary` })
+  },
+
+  // 获得销售时间段统计
+  getSaleTimeSummary: async (): Promise<ErpSaleTimeSummaryRespVO[]> => {
+    return await request.get({ url: `/erp/sale-statistics/time-summary` })
+  }
+}