feat: set theme for junior users

src/common/modules/lookup/controllers/index.ts

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+export * from './lookup.controller';

src/common/modules/lookup/controllers/lookup.controller.ts

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+import { Controller, Get, UseGuards } from '@nestjs/common';
+import { ApiBearerAuth, ApiTags } from '@nestjs/swagger';
+import { AccessTokenGuard } from '~/common/guards';
+import { ApiDataArrayResponse } from '~/core/decorators';
+import { ResponseFactory } from '~/core/utils';
+import { DocumentMetaResponseDto } from '~/document/dtos/response';
+import { LookupService } from '../services';
+
+@Controller('lookup')
+@ApiTags('Lookups')
+@ApiBearerAuth()
+export class LookupController {
+  constructor(private readonly lookupService: LookupService) {}
+
+  @UseGuards(AccessTokenGuard)
+  @Get('default-avatars')
+  @ApiDataArrayResponse(DocumentMetaResponseDto)
+  async findDefaultAvatars() {
+    const avatars = await this.lookupService.findDefaultAvatar();
+
+    return ResponseFactory.dataArray(avatars.map((avatar) => new DocumentMetaResponseDto(avatar)));
+  }
+}

src/common/modules/lookup/lookup.module.ts

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+import { Module } from '@nestjs/common';
+import { DocumentModule } from '~/document/document.module';
+import { LookupController } from './controllers';
+import { LookupService } from './services';
+
+@Module({
+  controllers: [LookupController],
+  providers: [LookupService],
+  imports: [DocumentModule],
+})
+export class LookupModule {}

src/common/modules/lookup/services/index.ts

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+export * from './lookup.service';

src/common/modules/lookup/services/lookup.service.ts

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+import { Injectable } from '@nestjs/common';
+import { DocumentType } from '~/document/enums';
+import { DocumentService } from '~/document/services';
+
+@Injectable()
+export class LookupService {
+  constructor(private readonly documentService: DocumentService) {}
+  findDefaultAvatar() {
+    return this.documentService.findDocuments({ documentType: DocumentType.DEFAULT_AVATAR });
+  }
+}