CourseWork_SchoolStudyAgain/SchoolAgainStudy/SchoolAgainStudyBusinessLogic/BusinessLogic/TaskLogic.cs

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C#
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using Microsoft.Extensions.Logging;
using SchoolAgainStudyContracts.BindingModel;
using SchoolAgainStudyContracts.BusinessLogicContracts;
using SchoolAgainStudyContracts.SearchModel;
using SchoolAgainStudyContracts.StorageContracts;
using SchoolAgainStudyContracts.ViewModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SchoolAgainStudyBusinessLogic.BusinessLogic
{
public class TaskLogic : ITaskLogic
{
private readonly ILogger _logger;
private readonly ITaskStorage _taskStorage;
public TaskLogic(ILogger<TaskLogic> logger, ITaskStorage taskStorage)
{
_logger = logger;
_taskStorage = taskStorage;
}
public List<TaskViewModel>? ReadList(TaskSearchModel? model)
{
_logger.LogInformation("ReadList. Title:{Title}.Id:{ Id}", model?.Title, model?.Id);
var list = model == null ? _taskStorage.GetFullList() : _taskStorage.GetFilteredList(model);
if (list == null)
{
_logger.LogWarning("ReadList return null list");
return null;
}
_logger.LogInformation("ReadList. Count:{Count}", list.Count);
return list;
}
public TaskViewModel? ReadElement(TaskSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
_logger.LogInformation("ReadElement. Title:{Title}. Id:{ Id}", model.Title, model.Id);
var element = _taskStorage.GetElement(model);
if (element == null)
{
_logger.LogWarning("ReadElement element not found");
return null;
}
_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
return element;
}
public bool Create(TaskBindingModel model)
{
CheckModel(model);
if (_taskStorage.Insert(model) == null)
{
_logger.LogWarning("Insert operation failed");
return false;
}
return true;
}
public bool Update(TaskBindingModel model)
{
CheckModel(model);
if (_taskStorage.Update(model) == null)
{
_logger.LogWarning("Update operation failed");
return false;
}
return true;
}
public bool Delete(TaskBindingModel model)
{
CheckModel(model, false);
_logger.LogInformation("Delete. Id:{Id}", model.Id);
if (_taskStorage.Delete(model) == null)
{
_logger.LogWarning("Delete operation failed");
return false;
}
return true;
}
private void CheckModel(TaskBindingModel model, bool withParams =
true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.Title))
{
throw new ArgumentNullException("Не задано название", nameof(model.Title));
}
if (model.TeacherId <= 0)
{
throw new ArgumentNullException("Неверно задан идентификатор учителя", nameof(model.TeacherId));
}
_logger.LogInformation("Task. Titel:{Title}.TeacherId:{TeacherId}. Id: {Id}", model.Title, model.TeacherId, model.Id);
var element = _taskStorage.GetElement(new TaskSearchModel
{
Title = model.Title,
TeacherId = model.TeacherId
});
if (element != null && element.Id != model.Id)
{
throw new InvalidOperationException("Задание с таким названием уже есть");
}
}
}
}