using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Linq.Expressions;
using InABox.Clients;
using InABox.Core;

namespace Comal.Classes
{
    public class QuoteExTax : CoreAggregate<Quote, QuoteProposal, double>
    {
        public override Expression<Func<QuoteProposal, double>> Aggregate => x => x.ProposalExTax;

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>> Links =>
            new Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>> ()
            {
                { QuoteProposal => QuoteProposal.Quote.ID, Quote => Quote.ID }
            };

        public override Filter<QuoteProposal> Filter => new Filter<QuoteProposal>(x => x.Default).IsEqualTo(true);
    }

    public class QuoteTax : CoreAggregate<Quote, QuoteProposal, double>
    {
        public override Expression<Func<QuoteProposal, double>> Aggregate => x => x.ProposalTax;

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>> Links =>
            new Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>>()
            {
                { QuoteProposal => QuoteProposal.Quote.ID, Quote => Quote.ID }
            };

        public override Filter<QuoteProposal> Filter => new Filter<QuoteProposal>(x => x.Default).IsEqualTo(true);
    }

    public class QuoteIncTax : CoreAggregate<Quote, QuoteProposal, double>
    {
        public override Expression<Func<QuoteProposal, double>> Aggregate => x => x.ProposalIncTax;

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>> Links =>
            new Dictionary<Expression<Func<QuoteProposal, object>>, Expression<Func<Quote, object>>>()
            {
                { QuoteProposal => QuoteProposal.Quote.ID, Quote => Quote.ID }
            };

        public override Filter<QuoteProposal> Filter => new Filter<QuoteProposal>(x => x.Default).IsEqualTo(true);
    }

    [UserTracking("Quote Management")]
    public class Quote : Entity, IRemotable, IPersistent, IStringAutoIncrement<Quote>, ILicense<QuotesManagementLicense>, IDataEntryInstance
    {
        [UniqueCodeEditor(Visible = Visible.Default, Editable = Editable.Enabled)]
        [EditorSequence(0)]
        public string Number { get; set; }

        [TextBoxEditor]
        [EditorSequence(1)]
        public string Title { get; set; }

        [EditorSequence(2)]
        public CustomerLink Customer { get; set; }

        private class ContactLookup : LookupDefinitionGenerator<Contact, Quote>
        {
            public override Filter<Contact> DefineFilter(Quote[] items)
            {
                if (items == null || !items.Any())
                    return new Filter<Contact>(x => x.ID).IsEqualTo(CoreUtils.FullGuid);

                var customer = items.First().Customer;
                if (!customer.IsValid())
                    return new Filter<Contact>(x => x.ID).IsEqualTo(CoreUtils.FullGuid);

                var contacts = new Client<CustomerContact>().Query(
                    new Filter<CustomerContact>(x => x.Customer.ID).IsEqualTo(customer.ID),
                    new Columns<CustomerContact>(x => x.Contact.ID)
                );

                var ids = contacts.Rows.Select(x => x.Get<CustomerContact, Guid>(c => c.Contact.ID));
                if (!ids.Any())
                    return new Filter<Contact>(x => x.ID).IsEqualTo(CoreUtils.FullGuid);

                return new Filter<Contact>(x => x.ID).InList(ids.ToArray());
            }

            public override Columns<Quote> DefineFilterColumns()
                => new Columns<Quote>(x => x.Customer.ID);
        }

        [EditorSequence(3)]
        [LookupDefinition(typeof(ContactLookup))]
        public ContactLink Contact { get; set; }

        [EditorSequence(4)]
        public Address SiteAddress { get; set; }

        [EditorSequence(5)]
        public AccountLink Account { get; set; }
        
        [DoubleEditor(Editable = Editable.Hidden)]
        [EditorSequence(6)]
        [Aggregate(typeof(QuoteExTax))]
        public double ExTax { get; set; }

        [DoubleEditor(Editable = Editable.Hidden)]
        [EditorSequence(7)]
        [Aggregate(typeof(QuoteTax))]
        public double Tax { get; set; }

        [DoubleEditor(Editable = Editable.Hidden)]
        [EditorSequence(8)]
        [Aggregate(typeof(QuoteIncTax))]
        public double IncTax { get; set; }

        [EditorSequence(9)]
        public QuoteStatusLink Status { get; set; }

        #region Management
        
        [TimestampEditor]
        [EditorSequence("Management", 1)]
        public DateTime DataEntered { get; set; }

        [DateEditor]
        [EditorSequence("Management", 2)]
        public DateTime ReceivedDate { get; set; }

        [DateEditor]
        [EditorSequence("Management", 3)]
        public DateTime DueDate { get; set; }

        [DateEditor]
        [EditorSequence("Management", 4)]
        public DateTime QuoteDate { get; set; }

        [DateEditor]
        [EditorSequence("Management", 5)]
        public DateTime ArchivedDate { get; set; }

        [EditorSequence("Management", 6)]
        public EmployeeLink Salesperson { get; set; }

        #endregion

        #region Notes

        [NotesEditor]
        [EditorSequence("Notes", 1)]
        public string[] Notes { get; set; }

        #endregion

        [DoNotPersist]
        [DoNotSerialize]
        public static String NumberPrefix { get; set; } 
        
        public Expression<Func<Quote, string>> AutoIncrementField() => x => x.Number;
        public Filter<Quote> AutoIncrementFilter() => null;
        public string AutoIncrementPrefix() => NumberPrefix;
        public string AutoIncrementFormat() => "{0:D6}";
        
        protected override void Init()
        {
            base.Init();
            Customer.Account.PropertyChanged += Account_PropertyChanged;
            Customer.Delivery.PropertyChanged += Delivery_PropertyChanged;
        }

        private void Delivery_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            var value = CoreUtils.GetPropertyValue(Customer.Delivery, e.PropertyName);
            CoreUtils.SetPropertyValue(SiteAddress, e.PropertyName, value);
        }

        private void Account_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName.Equals("ID"))
                Account.ID = Customer.Account.ID;
            else if (e.PropertyName.Equals("Code"))
                Account.Code = Customer.Account.Code;
            else if (e.PropertyName.Equals("Name"))
                Account.Name = Customer.Account.Name;
        }
    }
}