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

namespace EnVisage.Models
{
    public class CompanyModel : IBaseModel<Company>
    {
        public Guid Id { get; set; }
        [Required]
        [MaxLength(100)]
        public string Name { get; set; }
        [Display(Name = "Parent Company")]
        public Guid? ParentCompanyId { get; set; }
        [Display(Name = "Parent Company")]
        public string ParentCompanyName { get; set; }
		[Display(Name = "Number of Projects")]
        public int ProjectsCount { get; set; }
		[Display(Name = "Number of Companies")]
        public int CompaniesCount { get; set; }

        public List<ClientModel> Clients
        {
            get
            {
                List<ClientModel> result = new List<ClientModel>();
                EnVisageEntities DbContext = new EnVisageEntities();
                var clients = (from c in DbContext.Clients select c).ToList();
                foreach (var client in clients)
                    result.Add((ClientModel)client);

                return result.OrderBy(x => x.Name).ToList();
            }
            set { }
        }
        public IList<Guid> ClientId { get; set; }
        public IList<string> Client { get; set; }
        [Display(Name = "Views")]
        public List<ViewModel> Views
        {
            get
            {
                List<ViewModel> result = new List<ViewModel>();
                EnVisageEntities DbContext = new EnVisageEntities();
                var views = (from c in DbContext.Views select c).ToList();
                foreach (var view in views)
                    result.Add((ViewModel)view);

                return result.OrderBy(x => x.Name).ToList();
            }
            set { }
        }
        public IList<Guid> ViewId { get; set; }
        public IList<string> ViewName { get; set; }

        /// <summary>
        /// Casts a <see cref="Company"/> obect to the object of type <see cref="CompanyModel"/>.
        /// </summary>
        /// <param name="obj">A <see cref="Company"/> object.</param>
        /// <returns>A <see cref="CompanyModel"/> object filled with data from db.</returns>
        public static explicit operator CompanyModel(Company obj)
        {
            if (obj == null)
                return null;
            var model = new CompanyModel
            {
                Id = obj.Id,
                Name = obj.Name,
                ProjectsCount = obj.Projects.Count,
                CompaniesCount = obj.Company1.Count,
                ParentCompanyName = obj.Company2 == null ? string.Empty : obj.Company2.Name,
                ParentCompanyId = obj.ParentCompanyId
            };
            model.TrimStringProperties();
            return model;
        }

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

            dbObj.Name = Name;
            dbObj.ParentCompanyId = ParentCompanyId;
        }
    }
}