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

namespace Indotalent.Features.Performance.Transfer.Cqrs;

public class CreateTransferRequest
{
    public string EmployeeId { get; set; } = string.Empty;
    public string FromBranchId { get; set; } = string.Empty;
    public string FromDepartmentId { get; set; } = string.Empty;
    public string FromDesignationId { get; set; } = string.Empty;
    public string ToBranchId { get; set; } = string.Empty;
    public string ToDepartmentId { get; set; } = string.Empty;
    public string ToDesignationId { get; set; } = string.Empty;
    public DateTime? TransferDate { get; set; }
    public string TransferNote { get; set; } = string.Empty;
    public string Status { get; set; } = string.Empty;
}

public class CreateTransferResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
}

public record CreateTransferCommand(CreateTransferRequest Data) : IRequest<CreateTransferResponse>;

public class CreateTransferHandler : IRequestHandler<CreateTransferCommand, CreateTransferResponse>
{
    private readonly AppDbContext _context;

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

    public async Task<CreateTransferResponse> Handle(CreateTransferCommand request, CancellationToken cancellationToken)
    {
        var entityName = nameof(Data.Entities.Transfer);
        var autoNo = await _context.GenerateAutoNumberAsync(
            entityName: entityName,
            prefixTemplate: $"TRF/{{Year}}/",
            ct: cancellationToken
        );

        var entity = new Data.Entities.Transfer
        {
            AutoNumber = autoNo,
            EmployeeId = request.Data.EmployeeId,
            FromBranchId = request.Data.FromBranchId,
            FromDepartmentId = request.Data.FromDepartmentId,
            FromDesignationId = request.Data.FromDesignationId,
            ToBranchId = request.Data.ToBranchId,
            ToDepartmentId = request.Data.ToDepartmentId,
            ToDesignationId = request.Data.ToDesignationId,
            TransferDate = request.Data.TransferDate,
            TransferNote = request.Data.TransferNote,
            Status = request.Data.Status
        };

        _context.Transfer.Add(entity);
        await _context.SaveChangesAsync(cancellationToken);

        return new CreateTransferResponse
        {
            Id = entity.Id,
            AutoNumber = entity.AutoNumber
        };
    }
}