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; }

        public List<TeamModel> ViewTeams
        {
            get
            {
                var dbContext = new EnVisageEntities();
                var teams = (from c in dbContext.Teams
                             join tv in dbContext.Team2View on c.Id equals tv.TeamId
                             where tv.ViewId == Id
                             select c).ToList();
                var result = teams.Select(team => (TeamModel)team).ToList();
                return result.OrderBy(x => x.Name).ToList();
            }
        }

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

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

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