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

namespace EnVisage.Models
{
    public class RatesModel
    {
        public enum FormMode
        {
            ListRates = 0,
            //DeleteRate = 1,
            //ConfirmDeleteRate = 2,
            //EditRate = 3,
            DeriveRate = 4,
            //ConfirmEditRate = 5
        }

        public FormMode Mode { get; set; }
        public RateModel EditRate { get; set; }
        public Guid? EditRateId { get; set; }
        public Guid? DeleteRateId { get; set; }
        public Guid ExpenditureCategoryId { get; set; }
        public Guid ScenarioId { get; set; }
        public List<RateModel> GlobalRates { get; set; }
        public List<RateModel> LocalRates { get; set; }
        public string ErrorMessage { get; set; }

        public RatesModel()
        {
            Mode = FormMode.ListRates;
            LocalRates = new List<RateModel>();
            GlobalRates = new List<RateModel>();
        }

        public void AddLocalRange(ICollection<Rate> list)
        {
            this.LocalRates.AddRange(list.Select(x => new RateModel()
            {
                Id = x.Id,
                Rate1 = x.Rate1,
                StartDate = x.StartDate,
                EndDate = x.EndDate,
                ExpenditureCategoryId = x.ExpenditureCategoryId
            }));
        }
        public void AddGlobalRange(ICollection<Rate> list)
        {
            this.GlobalRates.AddRange(list.Select(x => new RateModel()
            {
                Id = x.Id,
                Rate1 = x.Rate1,
                StartDate = x.StartDate,
                EndDate = x.EndDate,
                ExpenditureCategoryId = x.ExpenditureCategoryId
            }));
        }
    }

    public class Expenditure2ExpendituresModel : List<Expenditure2Expenditure>
    {
        public Expenditure2Expenditure EditExpenditure2Expenditure { get; set; }
        public Guid? EditExpenditure2ExpenditureId { get; set; }
        public Guid? DeleteExpenditure2ExpenditureId { get; set; }

        public Expenditure2ExpendituresModel(ICollection<Expenditure2Expenditure> list)
        {
            this.AddRange(list);
        }

        public Expenditure2ExpendituresModel()
        {
            EditExpenditure2Expenditure = new Expenditure2Expenditure();
            EditExpenditure2ExpenditureId = Guid.Empty;
        }
    }

    public class FeesModel : List<FeeCalculation>
    {
        public FeeCalculation EditFee { get; set; }
        public Guid? EditFeeId { get; set; }
        public Guid? DeleteFeeId { get; set; }

        public FeesModel(ICollection<FeeCalculation> list)
        {
            this.AddRange(list);
        }

        public FeesModel()
        {
        }
    }

    public class ExpenditureCategoryModel : IBaseModel<ExpenditureCategory>
	{
        #region Classes and enums
        public enum UseTypes
        {
            [DisplayValue("Quantity")]
            Quantity = 1,
            [DisplayValue("Cost")]
            Cost = 2,
            [DisplayValue("Calculated")]
            Calculated = 3,
            [DisplayValue("Fee")]
            Fee = 4
        }

        public enum CgEfx
        {
            [DisplayValue("CG")]
            CG = 1,
            [DisplayValue("EFX")]
            EFX = 2
        }

        public enum CategoryTypes
        {
            [DisplayValue("N/A")]
            Undefined = 0,
            [DisplayValue("Labor")]
            Labor = 1,
            [DisplayValue("Materials")]
            Materials = 2,
            [DisplayValue("Usage")]
            Usage = 3
        }

        #endregion


        public Guid Id { get; set; }

        [Required]
        [Display(Name = "Expenditure Category Name")]
        public string Name { get; set; }
        [Required]
        [Display(Name = "Expenditure")]
        public Guid ExpenditureId { get; set; }
        [Display(Name = "GL Account")]
        public Guid GLId { get; set; }
        [Display(Name = "Unit Of Measure")]
        public Guid UOMId { get; set; }
        [Display(Name = "Cost Center")]
        public Guid CreditId { get; set; }
        [Display(Name = "Category Type")]
        public CategoryTypes? Type { get; set; }
        [Display(Name = "Usage")]
        public UseTypes? UseType { get; set; }
        [Display(Name = "CGEFX")]
        public string CGEFX { get; set; }
        [Display(Name = "System Attribute One")]
        public Guid? SystemAttributeOne { get; set; }
        [Display(Name = "System Attribute Two")]
        public Guid? SystemAttributeTwo { get; set; }
        [Display(Name = "Wks Subject To Fee")]
        public int? WksSubjectToFee { get; set; }
        public ICollection<Expenditure2Expenditure> Expenditure2Expenditure { get; set; }
        public ICollection<FeeCalculation> FeeCalculation { get; set; }
        public RatesModel Rates { get; set; }
        public FeesModel Fees { get; set; }
        public Expenditure2ExpendituresModel CalculatesCategories { get; set; }
        public FeeCalculation Fee { get; set; }
        public Rate Rate { get; set; }

        public bool AllowResourceAssignment { get; set; }
        public int ScenariosCount { get; set; }

        public int ResourceCount { get; set; }

        
        /// <summary>
        /// Casts a <see cref=" ExpenditureCategory"/> obect to the object of type <see cref=" ExpenditureCategoryModel"/>.
        /// </summary>
        /// <param name="obj">A <see cref="Client"/> object.</param>
        /// <returns>A <see cref=" ExpenditureCategoryModel"/> object filled with data from db.</returns>
        public static explicit operator ExpenditureCategoryModel(ExpenditureCategory obj)
        {
            if (obj == null)
                return null;

            VW_ExpenditureCategory view = obj.GetView(); // SA. ENV-839

            var model = new ExpenditureCategoryModel
            {
                Id = obj.Id,
                ExpenditureId = obj.ExpenditureId,
                GLId = obj.GLId,
                UOMId = obj.UOMId,
                CreditId = obj.CreditId,
                Type = (CategoryTypes?)obj.Type,
                UseType = (UseTypes?)obj.UseType,
                CGEFX = obj.CGEFX,
                SystemAttributeOne = obj.SystemAttributeOne,
                SystemAttributeTwo = obj.SystemAttributeTwo,
                WksSubjectToFee = obj.WksSubjectToFee,
                Expenditure2Expenditure = obj.Expenditure2Expenditure,
                FeeCalculation = obj.FeeCalculation,
                Rates = new RatesModel(),
                CalculatesCategories = new Expenditure2ExpendituresModel(),
                Fee = new FeeCalculation(),
                Rate = new Rate(),
                ScenariosCount = obj.ScenarioDetail.Count,
                AllowResourceAssignment = obj.AllowResourceAssignment,
                ResourceCount=obj.PeopleResources.Count
            };

            if (view != null)
                model.Name = view.ExpCategoryWithCcName;  // SA. ENV-756. ENV-839

            model.Rates.AddGlobalRange(obj.Rates.Where(x => x.Type == (short)RateModel.RateType.Global).ToList());
            model.Rates.AddLocalRange(obj.Rates.Where(x => x.Type == (short)RateModel.RateType.Derived).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(ExpenditureCategory dbObj)
        {
            if (dbObj == null)
                throw new ArgumentNullException();

            dbObj.ExpenditureId = ExpenditureId;
            dbObj.Name = Name;     // SA. ENV-756. ENV-839. Direct copiing of name from model
            dbObj.GLId = GLId;
            dbObj.UOMId = UOMId;
            dbObj.CreditId = CreditId;
            dbObj.Type = (int?)Type;
            dbObj.UseType = (int?)UseType;
            dbObj.CGEFX = CGEFX;
            dbObj.SystemAttributeOne = SystemAttributeOne;
            dbObj.SystemAttributeTwo = SystemAttributeTwo;
            dbObj.WksSubjectToFee = WksSubjectToFee;
            dbObj.AllowResourceAssignment = AllowResourceAssignment;
        }
    }

    /// <summary>
    /// Model for ExpenditureCategory page
    /// </summary>
    /// <remarks>SA. ENV-723</remarks>
    public class ExpenditureCategoriesListModel
    {
        public List<object> UnitsOfMeasure { get; set; }

        public ExpenditureCategoriesListModel()
        {
            UnitsOfMeasure = new List<object>();
        }

        public string UnitsOfMeasureJson
        {
            get
            {
                JavaScriptSerializer serializer = new JavaScriptSerializer();
                string json = serializer.Serialize(this.UnitsOfMeasure);
                return json;
            }
        }
    }

	/// <summary>
	/// An UI representation of Expenditure Category to be displayed as list items
	/// </summary>
	public class ListExpenditureCategory
	{
		public Guid Id { get; set; }
		public string Name { get; set; }
		public int? Type { get; set; }
		public string TypeS { get; set; }
		public int? UseType { get; set; }
		public string UseTypeS { get; set; }
		public string CGEFX { get; set; }
		public string GLName { get; set; }
		public string GLNumber { get; set; }
		public string UOM { get; set; }
		public decimal? UOMValue { get; set; }
		public string CreditDepartment { get; set; }
		public int ScenarioDetailCount { get; set; }
		public int ResourcesCount { get; set; }
	}
}