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

namespace EnVisage.Models
{
    public class StrategicGoalModel : IBaseModel<StrategicGoal>
    {
        public Guid Id { get; set; }

        [Required]
        [MaxLength(100)]
		[Display(Name = "Goal")]
		public string Name { get; set; }

		[Display(Name = "Description")]
        public string Description { get; set; }

        [Display(Name = "Number of Projects")]
        public int NbrProjects { get; set; }


        [Required]
        [DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:MM/dd/yy}", ApplyFormatInEditMode = true)]
		[Display(Name = "Start Date")]
		public DateTime? StartDate { get; set; }

		[Required]
        [DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:MM/dd/yy}", ApplyFormatInEditMode = true)]
		[Display(Name = "End Date")]
		public DateTime? EndDate { get; set; }

        [Display(Name = "Color")]
        public string Color { get; set; }

        public List<Company> Companies { get; set; }
        
        [UIHint("MultipleSelect")]
        [Display(Name = "Companies")]
        public List<Guid> CompanyId { get; set; }

        public StrategicGoalModel()
        {
            Companies = new List<Company>();
        }

        /// <summary>
        /// Casts a <see cref="Type"/> obect to the object of type <see cref="TypeModel"/>.
        /// </summary>
        /// <param name="obj">A <see cref="Type"/> object.</param>
        /// <returns>A <see cref="TypeModel"/> object filled with data from db.</returns>
        public static explicit operator StrategicGoalModel(StrategicGoal obj)
        {
            if (obj == null)
                return null;
            var model = new StrategicGoalModel
            {
                Id = obj.Id,
                Name = obj.Name,
                Description = obj.Description,
                StartDate = obj.StartDate.Value,
                EndDate = obj.EndDate.Value,
                Color = obj.Color,
                Companies = obj.StrategicGoal2Company.Select(x => new Company(){
                    Id = x.Company.Id,
                    Name = x.Company.Name
                }).ToList()
            };
            model.TrimStringProperties();
            return model;
        }

        /// <summary>
        /// Copies data from model to DAL object.
        /// </summary>
        /// <param name="dbObj">A target DAL object.</param>
        public void CopyTo(StrategicGoal dbObj)
        {
            if (dbObj == null)
                throw new ArgumentNullException();
            dbObj.Id = Id;
            dbObj.Name = Name;
            dbObj.Description = Description;
            dbObj.StartDate = StartDate;
            dbObj.EndDate = EndDate;
            dbObj.Color = Color;
        }
    }
}