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using System;
using MVPtoMVVM.domain;
using MVPtoMVVM.mvp.mappers;
using MVPtoMVVM.mvp.views;
using MVPtoMVVM.repositories;
namespace MVPtoMVVM.mvp.presenters
{
public class TodoItemPresenter : ITodoItemPresenter
{
private ITodoItemRepository itemRepository;
private ITodoItemMapper itemMapper;
private ITodoItemView view;
public int Id { get; set; }
public TodoItemPresenter(ITodoItemRepository itemRepository, ITodoItemMapper itemMapper)
{
this.itemRepository = itemRepository;
this.itemMapper = itemMapper;
}
public void SetView(ITodoItemView view)
{
this.view = view;
InitializeView();
}
public void SetItem(TodoItem item)
{
Id = item.Id;
Description = item.Description;
DueDate = item.DueDate;
IsDirty = false;
}
private void InitializeView()
{
view.Id = Id;
view.Description = Description;
view.DueDate = DueDate;
view.SaveButtonEnabled = false;
}
public void SaveItem()
{
var item = itemMapper.MapFrom(this);
itemRepository.Save(item);
Id = item.Id;
IsDirty = false;
}
public void DeleteItem()
{
var item = itemMapper.MapFrom(this);
view.Remove(item.Id);
itemRepository.Delete(item);
}
private string description;
public string Description
{
get { return description; }
set { description = value;
IsDirty = true;
}
}
private DateTime dueDate;
public DateTime DueDate
{
get { return dueDate; }
set { dueDate = value;
IsDirty = true;
}
}
private bool isDirty;
public bool IsDirty
{
get { return isDirty; }
private set { isDirty = value;
if (view != null)
UpdateControlState();
}
}
private void UpdateControlState()
{
view.SaveButtonEnabled = IsDirty && IsDescriptionValid() && IsDueDateValid();
view.DescriptionHasValidationErrors = !IsDescriptionValid();
view.DescriptionValidationMessage = GetDescriptionValidationMessage();
view.DueDateHasValidationErrors = !IsDueDateValid();
view.DueDateValidationMessage = GetDueDateValidationMessage();
view.IsDueSoon = IsDueSoon();
}
private bool IsDescriptionValid()
{
return description.Length > 0;
}
private bool IsDueDateValid()
{
return dueDate >= DateTime.Today;
}
private bool IsDueSoon()
{
return dueDate <= DateTime.Today.AddDays(1);
}
private string GetDescriptionValidationMessage()
{
return IsDescriptionValid() ? null : "You must enter a description";
}
private string GetDueDateValidationMessage()
{
return IsDueDateValid() ? null : "Due Date must be today or later";
}
}
}
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