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

namespace EnVisage.Models
{
    public class ViewModel : IBaseModel<View>
    {
        public Guid Id { get; set; }
        
        [Required]
        [MaxLength(100)]
        [Display(Name="Name")]
		public string Name { get; set; }
        [Display(Name = "Number of Teams")]
        public int TeamCount { get; set; }

        public string backController{ get; set; }
        public string backAction { get; set; }

        [Required]
        [UIHint("MultipleSelect")]
        [Display(Name = "Watchers")]
        public IList<Guid> Watchers { get; set; }

		[EitherOfRequired("Companies", "At least one Team or Business Unit must me selected", "", true)]
		[UIHint("MultipleSelect")]
        [Display(Name = "Teams")]
        public IList<Guid> Teams { get; set; }

		[UIHint("MultipleSelect")]
		[Display(Name = "Business Units")]
		public IList<Guid> Companies { get; set; }

		public IEnumerable<AspNetUser> AvailableUsers
        {
            get
            {
                EnVisageEntities DbContext = new EnVisageEntities();
                return DbContext.AspNetUsers;
            }
        }

		public ViewModel()
		{
			this.Watchers = new List<Guid>();
			this.Teams = new List<Guid>();
			this.Companies = new List<Guid>();
		}

		/// <summary>
		/// Casts a <see cref="View"/> obect to the object of type <see cref="ViewModel"/>.
		/// </summary>
		/// <param name="obj">A <see cref="View"/> object.</param>
		/// <returns>A <see cref="GLAccountModel"/> object filled with data from db.</returns>
		public static explicit operator ViewModel(View obj)
        {
            if (obj == null)
                return null;
            var model = new ViewModel
            {
                Id = obj.Id,
                Name = obj.Name,
                TeamCount = obj.Team2View.Count
            };
            model.TrimStringProperties();
            return model;
        }

        /// <summary>
        /// Copies data from model to DAL object.
        /// </summary>
        /// <param name="dbObj">A target DAL object.</param>
        public void CopyTo(View dbObj)
        {
            if (dbObj == null)
                throw new ArgumentNullException();

            dbObj.Name = Name;
        }
    }
    /// <summary>
    /// An UI representation of client to be displayed as list items
    /// </summary>
    public class ViewListModel
    {
        public Guid Id { get; set; }
        public string Name { get; set; }
        /// <summary>
        /// Gets or sets a value indicating that View is virtual. It is set only if this is an virtual company view, otherwise it is null.
        /// </summary>
        public Guid? CompanyId { get; set; }
    }
}