implement all lrt client functions

2026-07-09 04:47:41 +00:00 · 2022-12-08 12:39:41 +02:00
parent 9d00d549b6
commit d00601b52c
15 changed files with 307 additions and 121 deletions
@@ -0,0 +1,66 @@
+import { Injectable } from '@nestjs/common';
+import { HttpService } from '@nestjs/axios';
+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';
+
+@Injectable()
+export class LrtApiSearchClient {
+  constructor(private readonly httpService: HttpService) {}
+
+  async searchCategories(query: string): Promise<SearchResponseDto> {
+    query = query === 'viskas' ? '' : query;
+    const url = 'https://www.lrt.lt/api/search?type=3&tema=' + query;
+    //https://www.lrt.lt/api/search?page=1&count=44&order=desc
+    //https://www.lrt.lt/api/search?get_terms=1
+    const resp = await firstValueFrom(this.httpService.get(url));
+    const searchResponse: SearchResponseInterface = resp.data;
+
+    const cats = [];
+
+    //todo - move to mapper
+    const responseDto = new SearchResponseDto(
+      parseInt(searchResponse.page),
+      parseInt(searchResponse.total_found),
+    );
+
+    for (const searchItem of searchResponse.items) {
+      if (cats.indexOf(searchItem.category_title) > -1) {
+        continue;
+      }
+      const itemDto = new SearchResponseItemDto();
+      itemDto.label = searchItem.category_title;
+      itemDto.thumb =
+        'https://www.lrt.lt' +
+        searchItem.img_path_prefix +
+        '282x158' +
+        searchItem.img_path_postfix;
+      itemDto.categoryId = await this.findCategoryId(searchItem.category_url);
+
+      cats.push(searchItem.category_title);
+      responseDto.addItem(itemDto);
+    }
+
+    return responseDto;
+  }
+
+  private async findCategoryId(categoryUrl: string): Promise<string> {
+    //todo - cache to database
+    const url = 'https://www.lrt.lt' + categoryUrl;
+    const resp = await firstValueFrom(this.httpService.get(url));
+    const body: string = resp.data;
+    const start = body.indexOf('data.category_id');
+    if (start > -1) {
+      const interim = body.indexOf('"', start);
+      const end = body.indexOf('"', interim + 1);
+      if (end > interim) {
+        return body.substring(interim + 1, end);
+      } else {
+        throw 'unexpected response body 1';
+      }
+    } else {
+      throw 'unexpected response body 2';
+    }
+  }
+}