using CleanArchitecture.Domain.Common;
using System;
using System.Collections.Generic;

namespace CleanArchitecture.Domain.Entities
{
    public class TodoItem : AuditableEntity, IHasDomainEvent
    {
        public int Id { get; set; }

        public TodoList List { get; set; }

        public int ListId { get; set; }

        public string Title { get; set; }

        public string Note { get; set; }

        public PriorityLevel Priority { get; set; }

        public DateTime? Reminder { get; set; }

        private bool _done;
        public bool Done
        {
            get => _done;
            set
            {
                if (value == true && _done == false)
                {
                    DomainEvents.Add(new TodoItemCompletedEvent(this));
                }

                _done = value;
            }
        }

        public List<DomainEvent> DomainEvents { get; set; } = new List<DomainEvent>();
    }

    public class TodoItemCompletedEvent : DomainEvent
    {
        public TodoItemCompletedEvent(TodoItem item)
        {
            Item = item;
        }

        public TodoItem Item { get; }
    }

    public enum PriorityLevel
    {
        None = 0,
        Low = 1,
        Medium = 2,
        High = 3
    }
}