using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace GreenTree.Nachtragsmanagement.Web.Models.Appendix
{
    public class AppendixDataModel : IRequireStateDataModel
    {
        public int Id { get; set; }
        public string CustomNumber { get; set; }
        public string Description { get; set; }
        public decimal? Probability { get; set; }
        public int? OfferingNumber { get; set; }
        public DateTime? OfferingDate { get; set; }
        public decimal? OfferingValue { get; set; }
        public DateTime? NegotiationDate { get; set; }
        public decimal? NegotiationValue { get; set; }
        public bool ProtocolExists { get; set; }
        public int? OrderNumber { get; set; }
        public DateTime? OrderDate { get; set; }
        public bool OrderInvoiceCreated { get; set; }
        public string Comment { get; set; }
        public int? StateId { get; set; }
        public string StateDescription { get; set; }
        public int? SiteId { get; set; }
        public string SiteDescription { get; set; }
        public ICollection<int> DeviationValues { get; set; }
        public ICollection<string> DeviationDescriptions { get; set; }
        public string DeviationDescription { get; set; }
        public ICollection<string> CategoryEntities { get; set; }
        public ICollection<CategoryValueDataModel> CategoryValueEntities { get; set; }
        public string CategoryValuesDescription
        {
            get
            {
                if (CategoryValueEntities == null)
                    return String.Empty;
                else
                    return String.Join(", ", CategoryValueEntities.Select(d => d.Description));
            }
        }

        public AppendixDataModel()
        {
            DeviationValues = new List<int>();
            DeviationDescriptions = new List<string>();
            CategoryEntities = new List<string>();
            CategoryValueEntities = new List<CategoryValueDataModel>();
        }

        public static AppendixDataModel FromAppendix(Core.Domain.Appendix.Appendix appendixEntity, bool newWhenIsNull)
        {
            if (appendixEntity == null && newWhenIsNull)
                return new AppendixDataModel
                {
                    Id = -1
                };

            if (appendixEntity == null && !newWhenIsNull)
                throw new ArgumentNullException("appendixEntity", "Cannot create AppendixDataModel from NULL appendix entity.");

            return new AppendixDataModel
            {
                Id = appendixEntity.Id,
                CustomNumber = appendixEntity.CustomNumber,
                Description = appendixEntity.Description,
                Probability = appendixEntity.Probability,
                OfferingNumber = appendixEntity.OfferingNumber,
                OfferingDate = appendixEntity.OfferingDate,
                OfferingValue = appendixEntity.Value,
                NegotiationDate = appendixEntity.NegotiationDate,
                NegotiationValue = appendixEntity.NegotiationValue,
                ProtocolExists = appendixEntity.ProtocolExists,
                OrderNumber = appendixEntity.OrderNumber,
                OrderDate = appendixEntity.OrderDate,
                Comment = appendixEntity.Comment,
                OrderInvoiceCreated = appendixEntity.OrderInvoiceCreated,
                StateId = appendixEntity.StateId,
                StateDescription = appendixEntity.State == null
                    ? null
                    : appendixEntity.State.Description,
                SiteId = appendixEntity.SiteId,
                SiteDescription = appendixEntity.Site == null
                    ? null
                    : appendixEntity.Site.Description,
                CategoryValueEntities =
                    appendixEntity.CategoryValues
                        .Select(r =>
                            new CategoryValueDataModel
                            {
                                CategoryId = r.CategoryId,
                                Description = String.Format("{0} - {1:c2}", r.Category.Description, r.Value),
                                Value = r.Value
                            })
                        .ToList(),
                DeviationValues =
                    appendixEntity.Deviations
                        .Select(r => r.Id)
                        .ToList(),
                DeviationDescriptions =
                    appendixEntity.Deviations
                        .Select(r => r.CustomNumber)
                        .ToList(),
                DeviationDescription = 
                    String.Join(", ",
                        appendixEntity.Deviations
                            .Select(d => d.CustomNumber))
            };
        }

        public Core.Domain.Appendix.Appendix ToAppendix()
        {
            return new Core.Domain.Appendix.Appendix
            {
                Id = this.Id,
                CustomNumber = this.CustomNumber,
                Description = this.Description,
                Probability = this.Probability,
                OfferingNumber = this.OfferingNumber,
                OfferingDate = this.OfferingDate,
                NegotiationDate = this.NegotiationDate,
                NegotiationValue = this.NegotiationValue,
                ProtocolExists = this.ProtocolExists,
                OrderNumber = this.OrderNumber,
                OrderDate = this.OrderDate,
                Comment = this.Comment,
                SiteId = this.SiteId
            };
        }
    }
}