feat: update validation and exception handling, refactor controller routes, and enhance sales invoice item DTO

- Removed global validation pipe and added a new ValidationExceptionFilter for better error handling.
- Refactored controller routes to use underscores instead of hyphens for consistency.
- Updated CreateSalesInvoiceItemDto to include new fields: quantity, unit_type, and payload.
- Modified CreateSalesInvoiceDto to enforce items as an array with a minimum size.
- Added Enums module to provide gold karat values through a dedicated endpoint.
- Introduced new columns in the database schema for sales invoice items and goods.

src/common/enums/enums.ts

@@ -10,3 +10,9 @@ export enum AccountType {
   PROVIDER,
   POS,
 }
+
+export enum GoldKarat {
+  KARAT_18 = 18,
+  KARAT_21 = 21,
+  KARAT_24 = 24,
+}

src/common/filters/validation-exception.filter.ts

@@ -0,0 +1,27 @@
+import {
+  ArgumentsHost,
+  BadRequestException,
+  Catch,
+  ExceptionFilter,
+} from '@nestjs/common'
+import { Response } from 'express'
+
+@Catch(BadRequestException)
+export class ValidationExceptionFilter implements ExceptionFilter {
+  constructor() {
+    console.log('ValidationExceptionFilter initialized')
+  }
+  catch(exception: BadRequestException, host: ArgumentsHost) {
+    const ctx = host.switchToHttp()
+    const response = ctx.getResponse<Response>()
+    const status = exception.getStatus()
+    const exceptionResponse = exception.getResponse()
+    console.log(exception)
+
+    response.status(status).json({
+      statusCode: status,
+      message: 'Validation failed',
+      errors: (exceptionResponse as any).message || exceptionResponse,
+    })
+  }
+}

src/common/interceptors/response-mapping.interceptor.ts

@@ -23,6 +23,8 @@ import { map } from 'rxjs/operators'
 @Injectable()
 export class ResponseMappingInterceptor implements NestInterceptor {
   intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    console.log('first')
+
     const http = context.switchToHttp()
     const response = http.getResponse()
     const request = http.getRequest()
@@ -30,6 +32,7 @@ export class ResponseMappingInterceptor implements NestInterceptor {
     return next.handle().pipe(
       map(data => {
         const statusCode: number = (response as Response)?.statusCode ?? 200
+        console.log(data)
 
         if (data && typeof data === 'object') {
           if (Array.isArray((data as any).errors) && statusCode >= 400) {

src/common/interfaces/sale-invoice-payload.ts

@@ -0,0 +1,8 @@
+import { GoldKarat } from '../enums/enums'
+
+export interface SaleInvoicePayload {
+  weight: number
+  karat: keyof typeof GoldKarat
+  wages: number
+  profit: number
+}

src/common/response/response-mapper.ts

@@ -20,6 +20,8 @@ export const ResponseMapper = {
   },
 
   single<T>(item: T): MapperWrapper<T> {
+    console.log('asdasdsaasdsa')
+
     return { __mapped: 'single', data: item }
   },