update: add slug field to the danak service entity

src/modules/danak-services/DTO/create-service.dto.ts

@@ -103,4 +103,11 @@ export class CreateServiceDto {
   @IsUrl({ protocols: ["http", "https"], require_protocol: true }, { message: ServiceMessage.COVER_URL_SHOULD_BE_URL })
   @ApiProperty({ description: "The cover url of the service", example: "https://example.com/cover.png" })
   coverUrl?: string;
+
+  @IsOptional()
+  @IsNotEmpty({ message: ServiceMessage.SLUG_REQUIRED })
+  @IsString({ message: ServiceMessage.SLUG_STRING })
+  @Length(3, 150, { message: ServiceMessage.SLUG_LENGTH })
+  @ApiProperty({ description: "The slug of the service", example: "service-slug" })
+  slug?: string;
 }

src/modules/danak-services/entities/danak-service.entity.ts

@@ -1,4 +1,4 @@
-import { Column, DeleteDateColumn, Entity, ManyToOne, OneToMany } from "typeorm";
+import { Column, DeleteDateColumn, Entity, Index, ManyToOne, OneToMany } from "typeorm";
 
 import { DanakServiceCategory } from "./danak-service-category.entity";
 import { DanakServiceImage } from "./danak-service-image.entity";
@@ -13,10 +13,15 @@ import { ServicesLanguage } from "../enums/services-language.enum";
 @Entity()
 export class DanakService extends BaseEntity {
   @Column({ type: "varchar", length: 150, nullable: false, unique: true })
+  @Index()
   name: string;
 
   @Column({ type: "varchar", length: 150, nullable: true })
-  title: string;
+  title: string | null;
+
+  @Column({ type: "varchar", length: 150, nullable: true, unique: true })
+  @Index()
+  slug: string | null;
 
   @Column({ type: "boolean", nullable: false, default: false })
   isDanakSuggest: boolean;
@@ -55,7 +60,7 @@ export class DanakService extends BaseEntity {
   icon: string;
 
   @Column({ type: "varchar", length: 255, nullable: true })
-  coverUrl: string;
+  coverUrl: string | null;
   //-------------------------------------
   @ManyToOne(() => DanakServiceCategory, (danakServiceCategory) => danakServiceCategory.danakServices, {
     nullable: false,

src/modules/danak-services/providers/danak-services.service.ts

@@ -271,11 +271,13 @@ export class DanakServicesService {
     const existService = await this.danakServicesRepository.findOneByName(createDto.name);
     if (existService) throw new BadRequestException(ServiceMessage.NAME_EXIST);
 
+    const slug = this.generateSlug(createDto.slug ?? createDto.title);
+
     const images = createDto.images.map((image) => {
       return { imageUrl: image };
     });
 
-    const service = this.danakServicesRepository.create({ ...createDto, category, images });
+    const service = this.danakServicesRepository.create({ ...createDto, category, images, slug });
     await this.danakServicesRepository.save(service);
     return {
       message: CommonMessage.CREATED,
@@ -314,7 +316,17 @@ export class DanakServicesService {
       images = newImages;
     }
 
-    await this.danakServicesRepository.save({ ...service, ...updateDto, images: images.length ? images : service.images });
+    if (updateDto.slug) {
+      const existSlug = await this.danakServicesRepository.findOne({ where: { slug: updateDto.slug, id: Not(serviceId) } });
+      if (existSlug) throw new BadRequestException(ServiceMessage.SERVICE_ALREADY_EXISTS_WITH_THIS_SLUG);
+    }
+
+    await this.danakServicesRepository.save({
+      ...service,
+      ...updateDto,
+      slug: this.generateSlug(updateDto.slug ?? service.slug ?? service.name),
+      images: images.length ? images : service.images,
+    });
     return {
       message: CommonMessage.UPDATE_SUCCESS,
       service,
@@ -555,6 +567,18 @@ export class DanakServicesService {
   }
   /******************************************** */
 
+  private generateSlug(slug: string): string {
+    if (!slug) return "";
+
+    // Replace spaces and special characters with hyphens, preserve Farsi characters
+    return slug
+      .trim()
+      .replace(/[&\\#,+()$~%.'":*?<>{}]/g, "") // Remove special characters
+      .replace(/\s+/g, "-") // Replace spaces with hyphens
+      .replace(/-+/g, "-") // Replace multiple hyphens with single hyphen
+      .trim();
+  }
+
   private async checkUserPurchasedService(userId: string, serviceId: string) {
     const subscription = await this.danakServicesRepository
       .createQueryBuilder()