refactor: remove SalesInvoiceItemsService and update sales invoice handling

- Deleted SalesInvoiceItemsService as it was not implemented.
- Changed variable declaration from `const` to `let` in SalesInvoicesService for sales invoice creation.
- Updated response handling after sending to TSP provider in SalesInvoicesService.
- Renamed payload properties in TspProvider DTOs for clarity.
- Enhanced error handling in SalesInvoiceTspSwitchService for unsupported providers.
- Refactored SalesInvoiceTspService to utilize utility functions for payload building and sending.
- Updated PrismaService to increase connection limit and utilize dynamic options.
- Added new migration scripts to update database schema for sale_invoice_tsp_attempts.
- Introduced utility functions for building payloads and handling responses in sales invoice processing.

src/modules/tspProviders/sales-invoice-tsp-switch.service.ts

@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common'
+import { BadRequestException, Injectable } from '@nestjs/common'
 import {
   TspProviderBulkSendResultDto,
   TspProviderCorrectionSendPayloadDto,
@@ -18,17 +18,25 @@ export class SalesInvoiceTspSwitchService {
   private resolveSwitch(providerCode: string) {
     const normalizedCode = providerCode.trim().toUpperCase() || ''
 
+    let adapter: NamaProviderSwitchAdapter | null = null
     switch (normalizedCode) {
       case 'NAMA':
-      default:
-        return this.namaAdapter
+        adapter = this.namaAdapter
     }
+
+    if (!adapter) {
+      throw new BadRequestException(
+        `${providerCode} برای ارسال انتخاب شده است که در حال حاضر پشتیبانی نمی شود.`,
+      )
+    }
+    return adapter
   }
 
   async send(
     payload: TspProviderOriginalSendPayloadDto,
   ): Promise<TspProviderSendItemResultDto> {
     const adapter = this.resolveSwitch(payload.tsp_provider)
+
     return adapter.originalSend(payload)
   }
 
@@ -36,6 +44,7 @@ export class SalesInvoiceTspSwitchService {
     payload: TspProviderCorrectionSendPayloadDto,
   ): Promise<TspProviderCorrectionSendResponseDto> {
     const adapter = this.resolveSwitch(payload.tsp_provider)
+
     return adapter.correctionSend(payload)
   }