using System;
using System.Linq;
using WNPayroll.TaxCalcs;
using WNPayroll.Zenith.Models.Data.Payroll;
using Xunit;
using Zenith.Business.Engine;
using Zenith.Models.Data.Payroll.PayData;
using SubTaxType = WNPayroll.Zenith.Models.Data.Enums.SubTaxType;

namespace Zenith.UnitTests.Test_Cases
{
    public class StatutoryTaxingTests
    {
        private readonly PayrollEngineV2 Engine = new PayrollEngineV2();
        private ZenithPayrollData PD = new ZenithPayrollData();

        private readonly Boolean W42020Tests = false;
        private readonly States StateTested = States.CA;

        /*  Monthly = 1
         *  Semi-weekly = 2   */
        private readonly short Default_FederalTaxDueFrequency = 1;

        [Fact]
        public void P51()
        {
            PD = TestDefaults.ResetPayrollData(StateTested);

            PD.Employees[0].PayDataRecords[0] = TestDefaults.DefaultRecord(25, 40);

            PD.Employees[0].FederalTaxes[0] = new EmployeeFederalTax()
            {
                TaxID = 1,
                FilingStatus = (short)FederalTaxCalcs.FilingStatus.Single,
                Allowances = 0,
                AdditionalWithholding = 0,
                SubTaxType = SubTaxType.FederalTax,

                CompanyTaxDueFrequency = Default_FederalTaxDueFrequency,
                SUTAState = StateTested,
                IsW42020OrLater = W42020Tests,
            };

            PD.Employees[0].FederalTaxes.Add(new EmployeeFederalTax()
            {
                TaxID = 2,
                SubTaxType = SubTaxType.SocialSecurity,
                Exempt=true,

                SUTAState = StateTested,
                CompanyTaxDueFrequency = Default_FederalTaxDueFrequency,
            });

            var results = Engine.Process(PD);

            Assert.Equal(1000m, results.First().GrossPay, 0);
            Assert.Equal(62m, results.First().PayrollTaxes.Find(x => x.TaxID == 2).CompanyAmount, 0);
        }
        [Fact]
        public void P52()
        {
            PD = TestDefaults.ResetPayrollData(StateTested);

            PD.Employees[0].PayDataRecords[0] = TestDefaults.DefaultRecord(25, 40);

            PD.Employees[0].FederalTaxes[0] = new EmployeeFederalTax()
            {
                TaxID = 1,
                FilingStatus = (short)FederalTaxCalcs.FilingStatus.Single,
                Allowances = 0,
                AdditionalWithholding = 0,
                SubTaxType = SubTaxType.FederalTax,

                CompanyTaxDueFrequency = Default_FederalTaxDueFrequency,
                SUTAState = StateTested,
                IsW42020OrLater = W42020Tests,
            };

            PD.Employees[0].FederalTaxes.Add(new EmployeeFederalTax()
            {
                TaxID = 2,
                SubTaxType = SubTaxType.Medicare,
                Exempt = true,

                SUTAState = StateTested,
                CompanyTaxDueFrequency = Default_FederalTaxDueFrequency,
            });

            var results = Engine.Process(PD);

            Assert.Equal(1000m, results.First().GrossPay, 0);
            Assert.Equal(14.5m, results.First().PayrollTaxes.Find(x => x.TaxID == 2).CompanyAmount, 0);
        }
    }
}