using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using EnVisage.Code;

namespace EnVisage.Models
{
    public class NoteModel : IBaseModel<Note>
    {
        public Guid Id { get; set; }
        public Guid? ParentId { get; set; }
        [Required]
        public string Title { get; set; }
        public string Details { get; set; }
        public DateTime DateAdded { get; set; }
        public AspNetUser Author { get; set; }
        public int NoteType { get; set; }
        public List<NoteModel> ChildNotes { get; set; }
        public string CreatedBy { get; set; }
        public Guid? DomainId { get; set; }
        public NoteModel()
        {
            
        }

        public NoteModel(Guid parentId)
        {
            ParentId = parentId;
        }

        /// <summary>
        /// Casts a <see cref="Note"/> obect to the object of type <see cref="NoteModel"/>.
        /// </summary>
        /// <param name="obj">A <see cref="Note"/> object.</param>
        /// <returns>A <see cref="NoteModel"/> object filled with data from db.</returns>
        public static explicit operator NoteModel(Note obj)
        {
            if (obj == null)
                return null;
            var model = new NoteModel
            {
                DateAdded = DateTime.Now,
                Id = obj.Id,
                ParentId = obj.ParentId,
                Title = obj.Title,
                Details = obj.NoteDetail,
                Author = new EnVisageEntities().AspNetUsers.FirstOrDefault(x => x.Id == obj.UserId.Value.ToString()),
                NoteType = obj.NoteType ?? -1,
                DomainId = obj.DomainId
                
            };
            model.CreatedBy = (model.Author != null) ? model.Author.UserName : String.Empty;
            model.TrimStringProperties();
            return model;
        }

        /// <summary>
        /// Copies data from model to DAL object.
        /// </summary>
        /// <param name="dbObj">A target DAL object.</param>
        public void CopyTo(Note dbObj)
        {
            if (dbObj == null)
                throw new ArgumentNullException();
            if (dbObj.Id == Guid.Empty)
                dbObj.Id = Id;
            dbObj.ParentId = ParentId;
            
            dbObj.Title = Title;
            dbObj.DateAdded = DateTime.Now;
            dbObj.NoteDetail = Details;
            dbObj.NoteType = NoteType;
            dbObj.DomainId = DomainId;
            dbObj.UserId = Author != null ? new Guid(Author.Id) : new Guid(HttpContext.Current.User.Identity.GetID());
        }
    }
}