cache lrt category id to db

src/KodiApi/LRT/LrtApiClient/Client/lrt-api-search.client.ts

@@ -4,10 +4,17 @@ import { firstValueFrom } from 'rxjs';
 import { SearchResponseInterface } from '../Interface/search-response.interface';
 import { SearchResponseDto } from '../Dto/search-response.dto';
 import { SearchResponseItemDto } from '../Dto/search-response-item.dto';
+import { InjectRepository } from '@nestjs/typeorm';
+import { LrtCategory } from '../Entity/lrt-category.entity';
+import { FindOptionsUtils, Repository } from 'typeorm';
 
 @Injectable()
 export class LrtApiSearchClient {
-  constructor(private readonly httpService: HttpService) {}
+  constructor(
+    private readonly httpService: HttpService,
+    @InjectRepository(LrtCategory)
+    private lrtCategoriesRepository: Repository<LrtCategory>,
+  ) {}
 
   async searchCategories(query: string): Promise<SearchResponseDto> {
     query = query === 'viskas' ? '' : query;
@@ -46,6 +53,36 @@ export class LrtApiSearchClient {
   }
 
   private async findCategoryId(categoryUrl: string): Promise<string> {
+    const catId = await this.findCategoryIdInDb(categoryUrl);
+    if (catId !== null) {
+      return catId;
+    }
+    return this.findCategoryIdInLrt(categoryUrl);
+  }
+
+  private saveCategory(categoryUrl: string, catId: string) {
+    const cat = new LrtCategory();
+    cat.categoryUrl = categoryUrl;
+    cat.categoryId = catId;
+    this.lrtCategoriesRepository.save(cat);
+  }
+
+  private async findCategoryIdInDb(
+    categoryUrl: string,
+  ): Promise<string | null> {
+    const entity: LrtCategory | null = await this.lrtCategoriesRepository
+      .findOneBy({
+        categoryUrl: categoryUrl,
+      })
+      .catch(() => null);
+    if (entity !== null) {
+      return entity.categoryId;
+    }
+
+    return null;
+  }
+
+  private async findCategoryIdInLrt(categoryUrl: string): Promise<string> {
     //todo - cache to database
     const url = 'https://www.lrt.lt' + categoryUrl;
     const resp = await firstValueFrom(this.httpService.get(url));
@@ -55,7 +92,9 @@ export class LrtApiSearchClient {
       const interim = body.indexOf('"', start);
       const end = body.indexOf('"', interim + 1);
       if (end > interim) {
-        return body.substring(interim + 1, end);
+        const catId = body.substring(interim + 1, end);
+        this.saveCategory(categoryUrl, catId);
+        return catId;
       } else {
         throw 'unexpected response body 1';
       }

src/KodiApi/LRT/LrtApiClient/Entity/lrt-category.entity.ts

@@ -0,0 +1,11 @@
+import { Column, Entity, PrimaryColumn } from 'typeorm';
+
+@Entity()
+export class LrtCategory {
+
+  @PrimaryColumn({ name: 'category_url' })
+  categoryUrl: string;
+
+  @Column({ name: 'category_id' })
+  categoryId: string;
+}

src/KodiApi/LRT/LrtApiClient/lrt-api-client.module.ts

@@ -4,12 +4,15 @@ import { LrtApiSearchClient } from './Client/lrt-api-search.client';
 import { LrtApiClient } from './lrt-api.client';
 import { LrtApiCategoryClient } from './Client/lrt-api-category.client';
 import { LrtApiPlaylistClient } from './Client/lrt-api-playlist.client';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { LrtCategory } from './Entity/lrt-category.entity';
 
 @Module({
   imports: [
     HttpModule.register({
       withCredentials: true,
     }),
+    TypeOrmModule.forFeature([LrtCategory])
   ],
   providers: [
     LrtApiSearchClient,