Merge pull request #18 from Team-Kaleidoscope/devv0.1

First stage: Complete. Awaiting further progress...

1 files changed, 89 insertions, 0 deletions

diff --git a/src/DevHive.Services/Services/LanguageService.cs b/src/DevHive.Services/Services/LanguageService.cs
new file mode 100644
index 0000000..a6364d8
--- /dev/null
+++ b/src/DevHive.Services/Services/LanguageService.cs
@@ -0,0 +1,89 @@
+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
+	}
+}