feat(movie): add posible method

Author: mdwitr0

package.json

@@ -42,6 +42,7 @@
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
     "rxjs": "^7.2.0",
+    "transliteration": "^2.3.5",
     "uuid-apikey": "^1.5.3"
   },
   "devDependencies": {

src/app-cluster.service.ts

@@ -4,7 +4,7 @@ import * as cluster from 'cluster';
 import * as os from 'os';
 import { Injectable } from '@nestjs/common';
 
-const numCPUs = os.cpus().length;
+const numCPUs = process.env.NODE_ENV === 'production' ? os.cpus().length : 1;
 
 @Injectable()
 export class AppClusterService {

src/movie/dto/get-posible-values.dto.ts

@@ -0,0 +1,20 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsEnum } from 'class-validator';
+
+export enum DistinctFields {
+  GENRES = 'genres.name',
+  COUNTRIES = 'countries.name',
+  TYPES = 'type',
+  TYPE_NUMBERS = 'typeNumber',
+  STATUS = 'status',
+}
+
+export class GetPosibleValueDto {
+  @ApiProperty({ enum: DistinctFields })
+  @IsEnum(DistinctFields)
+  field: DistinctFields;
+
+  constructor(partial: Partial<GetPosibleValueDto>) {
+    Object.assign(this, partial);
+  }
+}

src/movie/dto/response/posible-value.response.dto.ts

@@ -0,0 +1,18 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { Expose } from 'class-transformer';
+import { transliterate } from 'transliteration';
+
+export class PosibleValueDto {
+  @ApiProperty({ description: 'Значение по которому нужно делать запрос в базу данных' })
+  @Expose()
+  name: string;
+
+  @ApiProperty({ description: 'Вспомогательное значение' })
+  @Expose()
+  slug: string;
+
+  constructor(value: string) {
+    this.name = value;
+    this.slug = transliterate(value, { replace: [[' ', '-']] });
+  }
+}

src/movie/movie.controller.ts

@@ -4,8 +4,10 @@ import { Movie } from './schemas/movie.schema';
 
 import { BaseControllerWithFindById } from 'src/common/base/base.controller';
 import { Controller } from 'src/common/decorators/controller.decorator';
-import { Get } from '@nestjs/common';
+import { Get, Query } from '@nestjs/common';
 import { ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { PosibleValueDto } from './dto/response/posible-value.response.dto';
+import { GetPosibleValueDto } from './dto/get-posible-values.dto';
 
 @Controller('movie', 'Фильмы, сериалы, и т.д.')
 export class MovieController extends BaseControllerWithFindById(Movie, MovieDocsResponseDto, 'Поиск тайтлов') {
@@ -19,4 +21,11 @@ export class MovieController extends BaseControllerWithFindById(Movie, MovieDocs
   async getRandomMovie(): Promise<Movie> {
     return this.movieService.getRandomMovie();
   }
+
+  @Get('possible-values-by-field')
+  @ApiOperation({ summary: 'Получить все возможные значения полей' })
+  @ApiResponse({ type: PosibleValueDto, isArray: true })
+  async getPossibleValuesByFieldName(@Query() dto: GetPosibleValueDto): Promise<PosibleValueDto[]> {
+    return this.movieService.getPossibleValuesByFieldName(dto);
+  }
 }

src/movie/movie.service.ts

@@ -4,6 +4,8 @@ import { Movie, MovieDocument } from './schemas/movie.schema';
 import { Model } from 'mongoose';
 import { BaseService } from 'src/common/base/base.service';
 import { getRandomInt } from 'src/common/utils/get-random-int.util';
+import { GetPosibleValueDto } from './dto/get-posible-values.dto';
+import { PosibleValueDto } from './dto/response/posible-value.response.dto';
 
 @Injectable()
 export class MovieService extends BaseService<Movie> {
@@ -25,4 +27,10 @@ export class MovieService extends BaseService<Movie> {
 
     return this.movieModel.findOne(filter).skip(getRandomInt(1, count)).lean();
   }
+
+  async getPossibleValuesByFieldName({ field }: GetPosibleValueDto): Promise<PosibleValueDto[]> {
+    const values = await this.movieModel.distinct(field).exec();
+
+    return values.filter((value) => value).map((value) => new PosibleValueDto(value));
+  }
 }

yarn.lock

@@ -5577,6 +5577,13 @@ tr46@~0.0.3:
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
   integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
 
+transliteration@^2.3.5:
+  version "2.3.5"
+  resolved "https://registry.yarnpkg.com/transliteration/-/transliteration-2.3.5.tgz#8f92309575f69e4a8a525dab4ff705ebcf961c45"
+  integrity sha512-HAGI4Lq4Q9dZ3Utu2phaWgtm3vB6PkLUFqWAScg/UW+1eZ/Tg6Exo4oC0/3VUol/w4BlefLhUUSVBr/9/ZGQOw==
+  dependencies:
+    yargs "^17.5.1"
+
 tree-kill@1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
@@ -5939,6 +5946,19 @@ yargs@^17.3.1:
     y18n "^5.0.5"
     yargs-parser "^21.1.1"
 
+yargs@^17.5.1:
+  version "17.7.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-17.7.0.tgz#b21e9af1e0a619a2a9c67b1133219b2975a07985"
+  integrity sha512-dwqOPg5trmrre9+v8SUo2q/hAwyKoVfu8OC1xPHKJGNdxAvPl4sKxL4vBnh3bQz/ZvvGAFeA5H3ou2kcOY8sQQ==
+  dependencies:
+    cliui "^8.0.1"
+    escalade "^3.1.1"
+    get-caller-file "^2.0.5"
+    require-directory "^2.1.1"
+    string-width "^4.2.3"
+    y18n "^5.0.5"
+    yargs-parser "^21.1.1"
+
 yn@3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"