implement fe with backend

Frontend/erp-system/lib/api/customers.ts

@@ -0,0 +1,15 @@
+import { apiRequest, buildQuery } from "@/lib/api-client"
+import { PagedResponse } from "@/types/common"
+import { Customer } from "@/types/customers"
+
+export interface ListCustomersParams {
+  page?: number
+  pageSize?: number
+  q?: string
+}
+
+export const customersApi = {
+  list(params: ListCustomersParams = {}): Promise<PagedResponse<Customer>> {
+    return apiRequest<PagedResponse<Customer>>(`/customers${buildQuery(params)}`)
+  },
+}

Frontend/erp-system/lib/api/sales.ts

@@ -0,0 +1,139 @@
+import { apiRequest, apiRequestWithETag, buildQuery } from "@/lib/api-client"
+import { ApiResult, PagedResponse } from "@/types/common"
+import {
+  CreateSalesInvoiceRequest,
+  CreateSalesSlipRequest,
+  SalesInvoice,
+  SalesInvoiceStatus,
+  SalesInvoicePostingCheck,
+  SalesInvoiceSummary,
+  SalesListFilterParams,
+  SalesReportDefinition,
+  SalesReportQueryRequest,
+  SalesReportQueryResponse,
+  SalesFreeIssueSuggestion,
+  FreeIssueDetail,
+  FreeIssueSummary,
+  SalesSlip,
+  SalesSlipStatus,
+  SalesSlipPostingCheck,
+  SalesSlipSummary,
+  UpdateSalesInvoiceRequest,
+  UpdateSalesSlipRequest,
+} from "@/types/sales"
+
+type SalesReportId = string
+
+export interface ListSalesInvoicesParams extends SalesListFilterParams {
+  status?: SalesInvoiceStatus
+}
+
+export interface ListSalesSlipsParams extends SalesListFilterParams {
+  status?: SalesSlipStatus
+}
+
+export interface ListFreeIssuesParams extends SalesListFilterParams {
+  status?: SalesSlipStatus
+}
+
+export const salesApi = {
+  listInvoices(params: ListSalesInvoicesParams = {}): Promise<PagedResponse<SalesInvoiceSummary>> {
+    return apiRequest<PagedResponse<SalesInvoiceSummary>>(`/sales-invoices${buildQuery(params)}`)
+  },
+
+  getInvoice(salesInvoiceId: number): Promise<ApiResult<SalesInvoice>> {
+    return apiRequestWithETag<SalesInvoice>(`/sales-invoices/${salesInvoiceId}`)
+  },
+
+  createInvoice(request: CreateSalesInvoiceRequest): Promise<ApiResult<SalesInvoice>> {
+    return apiRequestWithETag<SalesInvoice>("/sales-invoices", { method: "POST", body: request })
+  },
+
+  updateInvoice(salesInvoiceId: number, request: UpdateSalesInvoiceRequest, ifMatch: string): Promise<ApiResult<SalesInvoice>> {
+    return apiRequestWithETag<SalesInvoice>(`/sales-invoices/${salesInvoiceId}`, { method: "PUT", body: request, ifMatch })
+  },
+
+  postInvoice(salesInvoiceId: number): Promise<SalesInvoice> {
+    return apiRequest<SalesInvoice>(`/sales-invoices/${salesInvoiceId}/post`, { method: "POST" })
+  },
+
+  checkInvoicePosting(salesInvoiceId: number): Promise<SalesInvoicePostingCheck> {
+    return apiRequest<SalesInvoicePostingCheck>(`/sales-invoices/${salesInvoiceId}/posting-check`)
+  },
+
+  cancelInvoice(salesInvoiceId: number): Promise<SalesInvoice> {
+    return apiRequest<SalesInvoice>(`/sales-invoices/${salesInvoiceId}/cancel`, { method: "POST" })
+  },
+
+  listSlips(params: ListSalesSlipsParams = {}): Promise<PagedResponse<SalesSlipSummary>> {
+    return apiRequest<PagedResponse<SalesSlipSummary>>(`/sales-slips${buildQuery(params)}`)
+  },
+
+  getSlip(salesSlipId: number): Promise<ApiResult<SalesSlip>> {
+    return apiRequestWithETag<SalesSlip>(`/sales-slips/${salesSlipId}`)
+  },
+
+  createSlip(request: CreateSalesSlipRequest): Promise<ApiResult<SalesSlip>> {
+    return apiRequestWithETag<SalesSlip>("/sales-slips", { method: "POST", body: request })
+  },
+
+  updateSlip(salesSlipId: number, request: UpdateSalesSlipRequest, ifMatch: string): Promise<ApiResult<SalesSlip>> {
+    return apiRequestWithETag<SalesSlip>(`/sales-slips/${salesSlipId}`, { method: "PUT", body: request, ifMatch })
+  },
+
+  postSlip(salesSlipId: number): Promise<SalesSlip> {
+    return apiRequest<SalesSlip>(`/sales-slips/${salesSlipId}/post`, { method: "POST" })
+  },
+
+  checkSlipPosting(salesSlipId: number): Promise<SalesSlipPostingCheck> {
+    return apiRequest<SalesSlipPostingCheck>(`/sales-slips/${salesSlipId}/posting-check`)
+  },
+
+  cancelSlip(salesSlipId: number): Promise<SalesSlip> {
+    return apiRequest<SalesSlip>(`/sales-slips/${salesSlipId}/cancel`, { method: "POST" })
+  },
+
+  listFreeIssues(params: ListFreeIssuesParams = {}): Promise<PagedResponse<FreeIssueSummary>> {
+    return apiRequest<PagedResponse<FreeIssueSummary>>(`/free-issues${buildQuery(params)}`)
+  },
+
+  getFreeIssue(freeIssueId: number): Promise<ApiResult<FreeIssueDetail>> {
+    return apiRequestWithETag<FreeIssueDetail>(`/free-issues/${freeIssueId}`)
+  },
+
+  createFreeIssue(request: CreateSalesSlipRequest): Promise<ApiResult<FreeIssueDetail>> {
+    return apiRequestWithETag<FreeIssueDetail>("/free-issues", { method: "POST", body: request })
+  },
+
+  updateFreeIssue(freeIssueId: number, request: UpdateSalesSlipRequest, ifMatch: string): Promise<ApiResult<FreeIssueDetail>> {
+    return apiRequestWithETag<FreeIssueDetail>(`/free-issues/${freeIssueId}`, { method: "PUT", body: request, ifMatch })
+  },
+
+  postFreeIssue(freeIssueId: number): Promise<FreeIssueDetail> {
+    return apiRequest<FreeIssueDetail>(`/free-issues/${freeIssueId}/post`, { method: "POST" })
+  },
+
+  checkFreeIssuePosting(freeIssueId: number): Promise<SalesSlipPostingCheck> {
+    return apiRequest<SalesSlipPostingCheck>(`/free-issues/${freeIssueId}/posting-check`)
+  },
+
+  cancelFreeIssue(freeIssueId: number): Promise<FreeIssueDetail> {
+    return apiRequest<FreeIssueDetail>(`/free-issues/${freeIssueId}/cancel`, { method: "POST" })
+  },
+
+  getFreeIssueSuggestions(salesSlipId: number): Promise<SalesFreeIssueSuggestion> {
+    return apiRequest<SalesFreeIssueSuggestion>(`/sales-slips/${salesSlipId}/free-issue-suggestions`)
+  },
+
+  listReports(): Promise<SalesReportDefinition[]> {
+    return apiRequest<SalesReportDefinition[]>("/reports/sales")
+  },
+
+  getReport(reportId: SalesReportId): Promise<SalesReportDefinition> {
+    return apiRequest<SalesReportDefinition>(`/reports/sales/${reportId}`)
+  },
+
+  queryReport(request: SalesReportQueryRequest): Promise<SalesReportQueryResponse> {
+    return apiRequest<SalesReportQueryResponse>("/reports/sales/query", { method: "POST", body: request })
+  },
+}

Frontend/erp-system/lib/sales-line-utils.ts

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+import { ItemListItem } from "@/types/master-data"
+
+export function getSuggestedUnitPrice(items: ItemListItem[], itemId: number | null | undefined): number | null {
+  if (!itemId) return null
+  return items.find((item) => item.itemId === itemId)?.salePrice ?? null
+}