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

namespace Indotalent.Features.Performance.Promotion.Cqrs;

public class GetPromotionByIdResponse
{
    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? PromotionNote { get; set; }
    public string? Status { get; set; }
    public DateTimeOffset? CreatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public DateTimeOffset? UpdatedAt { get; set; }
    public string? UpdatedBy { get; set; }
}

public record GetPromotionByIdQuery(string Id) : IRequest<GetPromotionByIdResponse?>;

public class GetPromotionByIdHandler : IRequestHandler<GetPromotionByIdQuery, GetPromotionByIdResponse?>
{
    private readonly AppDbContext _context;

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

    public async Task<GetPromotionByIdResponse?> Handle(GetPromotionByIdQuery request, CancellationToken cancellationToken)
    {
        return await _context.Promotion
            .AsNoTracking()
            .Include(x => x.Employee)
            .Where(x => x.Id == request.Id)
            .Select(x => new GetPromotionByIdResponse
            {
                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,
                PromotionNote = x.PromotionNote,
                Status = x.Status,
                CreatedAt = x.CreatedAt,
                CreatedBy = x.CreatedBy,
                UpdatedAt = x.UpdatedAt,
                UpdatedBy = x.UpdatedBy
            })
            .FirstOrDefaultAsync(cancellationToken);
    }
}