the serial letter normalization added to the code to normalize the Heh , Ya , Kaf and etc to the correct character

src/plates/plates.service.ts

@@ -7,20 +7,23 @@ import {
 import { Types } from "mongoose";
 import { PlateDbService } from "src/plates/entites/db-service/plate.db.service";
 import { AddPlateDto } from "src/profile/dto/user/AddPlateDto";
+import { PlateNormalizerService } from "src/utils/plate-normalizer/plate-normalizer.service";
 
 @Injectable()
 export class PlatesService {
   constructor(
     private readonly plateDbService: PlateDbService,
+    private readonly plateNormalizer: PlateNormalizerService,
   ) {}
 
   async addPlate(currentUser, body: AddPlateDto) {
     const { plate, nationalCodeOfInsurer } = body;
 
+    const normalizedAlphabet = this.plateNormalizer.normalizePlateText(String(plate.centerAlphabet || ""));
     const duplicate = await this.plateDbService.findOne({
       userId: currentUser,
       leftDigits: plate.leftDigits,
-      centerAlphabet: plate.centerAlphabet,
+      centerAlphabet: normalizedAlphabet,
       centerDigits: plate.centerDigits,
       ir: plate.ir,
       nationalCodeOfInsurer,
@@ -31,6 +34,7 @@ export class PlatesService {
 
     const newPlateData = await this.plateDbService.create({
       ...plate,
+      centerAlphabet: normalizedAlphabet,
       userId: currentUser,
       nationalCodeOfInsurer: body.nationalCodeOfInsurer,
     });