using System;
using Schaad.Accounting.Models;

namespace Schaad.Accounting.Datasets
{
    public class TransactionDataset : Transaction
    {
        public Account OriginAccount { get; set; }

        public Account TargetAccount { get; set; }

        public TransactionDataset(Transaction transaction, Account originAccount, Account targetAccout)
        {
            this.BankTransactionId = transaction.BankTransactionId;
            this.Id = transaction.Id;
            this.OriginAccountId = transaction.OriginAccountId;
            this.TargetAccountId = transaction.TargetAccountId;
            this.Text = transaction.Text;
            this.Value = transaction.Value;
            this.FxRate = transaction.FxRate;
            this.ValueDate = transaction.ValueDate;
            this.BookingDate = transaction.BookingDate;
            this.OriginAccount = originAccount;
            this.TargetAccount = targetAccout;
        }

        public decimal GetValue(bool withFxRate)
        {
            if (withFxRate && FxRate != 0)
            {
                return Math.Round(Value / FxRate.Value, 2);
            }
            else
                return Value;
        }

        public decimal GetValue(bool withFxRate, string accountId)
        {
            if (accountId == OriginAccountId)
            {
                return -1 * GetValue(withFxRate);
            }

            return GetValue(withFxRate);
        }

        /// <summary>
        /// First word of <see cref="Text"/>, used to group related bookings (e.g. "Narbonne Car"
        /// and "Narbonne Food" both group under "Narbonne").
        /// </summary>
        public string GetTextGroup()
        {
            if (string.IsNullOrEmpty(Text))
            {
                return Text;
            }

            var spaceIndex = Text.IndexOf(' ');
            return spaceIndex < 0 ? Text : Text[..spaceIndex];
        }
    }
}