using System;
using System.Collections.Generic;

namespace LCU.Library.Internal.IncentiveApiModels.Entities
{
    public class AccountingSummary
    {
        public IReadOnlyCollection<DepartmentLineItem> DepartmentPayouts { get; set; }
        public decimal Total { get; set; }
        public DateTime PayoutPeriod { get; }

        public AccountingSummary(DateTime payoutPeriod)
        {
            PayoutPeriod = payoutPeriod;
            DepartmentPayouts = new List<DepartmentLineItem>();
            Total = 0;
        }

        public void Apply(List<PayoutLineItem> allNewPayouts, Dictionary<int, string> deptNames)
        {
            var departmentSet = new Dictionary<int, DepartmentLineItem>();
            foreach (var payoutLineItem in allNewPayouts)
            {
                if (!departmentSet.ContainsKey(payoutLineItem.DepartmentId))
                {
                    departmentSet.Add(payoutLineItem.DepartmentId,
                        new DepartmentLineItem(payoutLineItem.DepartmentId, deptNames[payoutLineItem.DepartmentId],
                            PayoutPeriod));
                }

                departmentSet[payoutLineItem.DepartmentId].Apply(payoutLineItem);
                Total += payoutLineItem.PayoutTotal;
            }

            foreach (var accountingSummaryLineItem in departmentSet.Values)
            {
                accountingSummaryLineItem.CalculatePercentage(Total);
            }

            DepartmentPayouts = departmentSet.Values;
        }
    }
}