using Indotalent.ConfigBackEnd.Extensions;
using Indotalent.Infrastructure.Database;
using MediatR;
using Microsoft.EntityFrameworkCore;

namespace Indotalent.Features.Leave.LeaveBalance.Cqrs;

public class GetLeaveBalanceListResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public string? EmployeeId { get; set; }
    public string? EmployeeName { get; set; }
    public string? EmployeeCode { get; set; }
    public string? LeaveCategoryId { get; set; }
    public string? LeaveCategoryName { get; set; }
    public int Entitlement { get; set; }
    public int Used { get; set; }
    public int Pending { get; set; }
    public int Remaining { get; set; }
    public int Year { get; set; }
}

public record GetLeaveBalanceListQuery() : IRequest<List<GetLeaveBalanceListResponse>>;

public class GetLeaveBalanceListHandler : IRequestHandler<GetLeaveBalanceListQuery, List<GetLeaveBalanceListResponse>>
{
    private readonly AppDbContext _context;

    public GetLeaveBalanceListHandler(AppDbContext context) => _context = context;

    public async Task<List<GetLeaveBalanceListResponse>> Handle(GetLeaveBalanceListQuery request, CancellationToken cancellationToken)
    {
        return await _context.LeaveBalance
            .AsNoTracking()
            .NotDeletedOnly()
            .Include(x => x.Employee)
            .Include(x => x.LeaveCategory)
            .OrderByDescending(x => x.Year)
            .ThenBy(x => x.Employee!.FirstName)
            .Select(x => new GetLeaveBalanceListResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                EmployeeId = x.EmployeeId,
                EmployeeName = x.Employee != null ? $"{x.Employee.FirstName} {x.Employee.LastName}" : string.Empty,
                EmployeeCode = x.Employee != null ? $"{x.Employee.Code}" : string.Empty,
                LeaveCategoryId = x.LeaveCategoryId,
                LeaveCategoryName = x.LeaveCategory != null ? x.LeaveCategory.Name : string.Empty,
                Entitlement = x.Entitlement,
                Used = x.Used,
                Pending = x.Pending,
                Remaining = x.Remaining,
                Year = x.Year
            })
            .ToListAsync(cancellationToken);
    }
}