67 lines
1.8 KiB
C#
67 lines
1.8 KiB
C#
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using BookContract.BindingModels;
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using BookContract.BusinessLogicContracts;
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using BookContract.StorageContracts;
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using BookContract.ViewModels;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace BookBusinessLogic.BusinessLogic
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{
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public class HistoryLogic : IHistoryLogic
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{
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private readonly IHistoryStorage _historyStorage;
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public HistoryLogic(IHistoryStorage historyStorage)
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{
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_historyStorage = historyStorage;
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}
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public List<HistoryViewModel> Read(HistoryBindingModel model)
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{
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if(model == null)
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{
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return _historyStorage.GetFullList();
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}
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if (model.Id.HasValue) {
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return new List<HistoryViewModel>
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{
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_historyStorage.GetElement(model)
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};
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}
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return _historyStorage.GetHistoryByBookId(model.BookId);
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}
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public void CreateOrUpdate(HistoryBindingModel model)
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{
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var element = _historyStorage.GetElement(
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new HistoryBindingModel
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{
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Id = model.Id,
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});
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if (element != null && element.Id != model.Id)
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{
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throw new Exception("Такая связь уже существует");
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}
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_historyStorage.Insert(model);
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}
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public void Delete(HistoryBindingModel model)
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{
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var element = _historyStorage.GetElement(new HistoryBindingModel
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{
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Id = model.Id
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});
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if (element == null)
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{
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throw new Exception("Навык не найден");
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}
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_historyStorage.Delete(model);
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}
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}
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}
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