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using System;
using System.Threading.Tasks;
using AutoMapper;
using DevHive.Data.Models;
using DevHive.Data.Repositories;
using DevHive.Services.Models.Language;
namespace DevHive.Services.Services
{
public class LanguageService
{
private readonly LanguageRepository _languageRepository;
private readonly IMapper _languageMapper;
public LanguageService(LanguageRepository languageRepository, IMapper mapper)
{
this._languageRepository = languageRepository;
this._languageMapper = mapper;
}
public async Task<bool> CreateLanguage(CreateLanguageServiceModel languageServiceModel)
{
if (await this._languageRepository.DoesLanguageNameExistAsync(languageServiceModel.Name))
throw new ArgumentException("Language already exists!");
Language language = this._languageMapper.Map<Language>(languageServiceModel);
bool result = await this._languageRepository.AddAsync(language);
return result;
}
public async Task<LanguageServiceModel> GetLanguageById(Guid id)
{
Language language = await this._languageRepository.GetByIdAsync(id);
if (language == null)
throw new ArgumentException("The language does not exist");
return this._languageMapper.Map<LanguageServiceModel>(language);
}
public async Task<bool> UpdateLanguage(UpdateLanguageServiceModel languageServiceModel)
{
Task<bool> langExist = this._languageRepository.DoesLanguageExistAsync(languageServiceModel.Id);
Task<bool> newLangNameExists = this._languageRepository.DoesLanguageNameExistAsync(languageServiceModel.Name);
await Task.WhenAny(langExist, newLangNameExists);
if (!langExist.Result)
throw new ArgumentException("Language already exists!");
if (newLangNameExists.Result)
throw new ArgumentException("This name is already in our datbase!");
Language lang = this._languageMapper.Map<Language>(languageServiceModel);
return await this._languageRepository.EditAsync(lang);
}
public async Task<bool> DeleteLanguage(Guid id)
{
if (!await this._languageRepository.DoesLanguageExistAsync(id))
throw new ArgumentException("Language does not exist!");
Language language = await this._languageRepository.GetByIdAsync(id);
return await this._languageRepository.DeleteAsync(language);
}
}
}
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