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using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using AutoMapper;
using DevHive.Data.Interfaces.Repositories;
using DevHive.Data.Models;
using DevHive.Services.Interfaces;
using DevHive.Services.Models.Language;
namespace DevHive.Services.Services
{
public class LanguageService : ILanguageService
{
private readonly ILanguageRepository _languageRepository;
private readonly IMapper _languageMapper;
public LanguageService(ILanguageRepository languageRepository, IMapper mapper)
{
this._languageRepository = languageRepository;
this._languageMapper = mapper;
}
#region Create
public async Task<Guid> CreateLanguage(CreateLanguageServiceModel createLanguageServiceModel)
{
if (await this._languageRepository.DoesLanguageNameExistAsync(createLanguageServiceModel.Name))
throw new ArgumentException("Language already exists!");
Language language = this._languageMapper.Map<Language>(createLanguageServiceModel);
bool success = await this._languageRepository.AddAsync(language);
if (success)
{
Language newLanguage = await this._languageRepository.GetByNameAsync(createLanguageServiceModel.Name);
return newLanguage.Id;
}
else
return Guid.Empty;
}
#endregion
#region Read
public async Task<ReadLanguageServiceModel> 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<ReadLanguageServiceModel>(language);
}
public HashSet<ReadLanguageServiceModel> GetLanguages()
{
HashSet<Language> languages = this._languageRepository.GetLanguages();
return this._languageMapper.Map<HashSet<ReadLanguageServiceModel>>(languages);
}
#endregion
#region Update
public async Task<bool> UpdateLanguage(UpdateLanguageServiceModel languageServiceModel)
{
bool langExists = await this._languageRepository.DoesLanguageExistAsync(languageServiceModel.Id);
bool newLangNameExists = await this._languageRepository.DoesLanguageNameExistAsync(languageServiceModel.Name);
if (!langExists)
throw new ArgumentException("Language does not exist!");
if (newLangNameExists)
throw new ArgumentException("Language name already exists in our data base!");
Language lang = this._languageMapper.Map<Language>(languageServiceModel);
return await this._languageRepository.EditAsync(languageServiceModel.Id, lang);
}
#endregion
#region Delete
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);
}
#endregion
}
}
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