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

namespace Indotalent.Features.Performance.Promotion.Cqrs;

public class GetPromotionListResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public string? EmployeeId { get; set; }
    public string? EmployeeCode { get; set; }
    public string? EmployeeName { get; set; }
    public string? FromGrade { get; set; }
    public string? ToGrade { get; set; }
    public DateTime? EffectiveDate { get; set; }
    public string? Status { get; set; }
}

public record GetPromotionListQuery() : IRequest<List<GetPromotionListResponse>>;

public class GetPromotionListHandler : IRequestHandler<GetPromotionListQuery, List<GetPromotionListResponse>>
{
    private readonly AppDbContext _context;

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

    public async Task<List<GetPromotionListResponse>> Handle(GetPromotionListQuery request, CancellationToken cancellationToken)
    {
        return await _context.Promotion
            .AsNoTracking()
            .NotDeletedOnly()
            .Include(x => x.Employee)
            .OrderByDescending(x => x.CreatedAt)
            .Select(x => new GetPromotionListResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                EmployeeId = x.EmployeeId,
                EmployeeCode = x.Employee != null ? x.Employee.Code : string.Empty,
                EmployeeName = x.Employee != null ? $"{x.Employee.FirstName} {x.Employee.LastName}" : string.Empty,
                FromGrade = x.FromGrade,
                ToGrade = x.ToGrade,
                EffectiveDate = x.EffectiveDate,
                Status = x.Status
            })
            .ToListAsync(cancellationToken);
    }
}