Backend-Api/Query/ClientReports/Handler/NotSignedContractEmployeesQueryHandler.cs

using System.Globalization;
using CompanyManagment.EFCore;
using Microsoft.EntityFrameworkCore;
using Query.ClientReports.Models;

namespace Query.ClientReports.Handler
{
    public class NotSignedContractEmployeesQueryHandler
    {
        private readonly CompanyContext _companyContext;

        public NotSignedContractEmployeesQueryHandler(CompanyContext companyContext)
        {
            _companyContext = companyContext;
        }

        public List<NotSignedContractEmployeesQueryModel> Handle(long workshopId, int yearFa, int monthFa)
        {
            var date = new DateTime(yearFa, monthFa, 1, new PersianCalendar());

            int nextMonth;
            int nextMonthYear;
            if (monthFa == 12)
            {
                nextMonthYear = yearFa + 1;
                nextMonth = 1;
            }
            else
            {
                nextMonth = monthFa + 1;
                nextMonthYear = yearFa;
            }

            var nextMonthDate = new DateTime(nextMonthYear, nextMonth, 1, new PersianCalendar());
            var query = _companyContext.Employees.Include(x => x.Contracts).Where(x =>
                !x.Contracts.Any(y => y.ContarctStart < nextMonthDate && y.ContractEnd >= date && y.Signature == "0"));

            return query.Select(x => new NotSignedContractEmployeesQueryModel()
            {
                MonthFa = monthFa,
                YearFa = yearFa,
                EmployeeFullName = x.FName + " " + x.LName,
                EmployeeId = x.id
            }).ToList();
        }
    }
}