62 lines
1.8 KiB
C#
62 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.Runtime.CompilerServices;
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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 BookLogic : IBookLogic
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{
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private readonly IBookStorage _bookStorage;
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public BookLogic(IBookStorage bookStorage)
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{
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_bookStorage = bookStorage;
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}
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public void CreateOrUpdate(BookBindingModel model)
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{
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var element = _bookStorage.GetElement(new BookBindingModel { Title = model.Title });
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if (element != null && element.Id != model.Id) {
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throw new Exception("Книги с таким названием тут нет");
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}
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if (model.Id.HasValue)
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{
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_bookStorage.Update(model);
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}
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else
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{
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_bookStorage.Insert(model);
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}
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}
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public void Delete(BookBindingModel model)
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{
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var element = _bookStorage.GetElement(new BookBindingModel { Title = model.Title });
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if (element == null)
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{
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throw new Exception("Книги с таким названием тут нет");
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}
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_bookStorage.Delete(model);
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}
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public List<BookViewModel> Read(BookBindingModel model)
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{
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if(model == null)
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return _bookStorage.GetFullList();
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if (model.Id.HasValue) {
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return new List<BookViewModel> {
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_bookStorage.GetElement(model)
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};
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}
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return _bookStorage.GetFullList();
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}
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}
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}
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