using Application.Common.Repositories;
using Domain.Entities;
using Domain.Enums;
using FluentValidation;
using MediatR;

namespace Application.Features.SalesOrderManager.Commands;

public class UpdateSalesOrderResult
{
    public SalesOrder? Data { get; set; }
}

public class UpdateSalesOrderRequest : IRequest<UpdateSalesOrderResult>
{
    public string? Id { get; init; }
    public DateTime? OrderDate { get; init; }
    public string? OrderStatus { get; init; }
    public string? Description { get; init; }
    public string? CustomerId { get; init; }
    public string? TaxId { get; init; }
    public string? UpdatedById { get; init; }
}

public class UpdateSalesOrderValidator : AbstractValidator<UpdateSalesOrderRequest>
{
    public UpdateSalesOrderValidator()
    {
        RuleFor(x => x.Id).NotEmpty();
        RuleFor(x => x.OrderDate).NotEmpty();
        RuleFor(x => x.OrderStatus).NotEmpty();
        RuleFor(x => x.CustomerId).NotEmpty();
        RuleFor(x => x.TaxId).NotEmpty();
    }
}

public class UpdateSalesOrderHandler : IRequestHandler<UpdateSalesOrderRequest, UpdateSalesOrderResult>
{
    private readonly ICommandRepository<SalesOrder> _repository;
    private readonly IUnitOfWork _unitOfWork;
    private readonly SalesOrderService _salesOrderService;

    public UpdateSalesOrderHandler(
        ICommandRepository<SalesOrder> repository,
        SalesOrderService salesOrderService,
        IUnitOfWork unitOfWork
        )
    {
        _repository = repository;
        _unitOfWork = unitOfWork;
        _salesOrderService = salesOrderService;
    }

    public async Task<UpdateSalesOrderResult> Handle(UpdateSalesOrderRequest request, CancellationToken cancellationToken)
    {

        var entity = await _repository.GetAsync(request.Id ?? string.Empty, cancellationToken);

        if (entity == null)
        {
            throw new Exception($"Entity not found: {request.Id}");
        }

        entity.UpdatedById = request.UpdatedById;

        entity.OrderDate = request.OrderDate;
        entity.OrderStatus = (SalesOrderStatus)int.Parse(request.OrderStatus!);
        entity.Description = request.Description;
        entity.CustomerId = request.CustomerId;
        entity.TaxId = request.TaxId;

        _repository.Update(entity);
        await _unitOfWork.SaveAsync(cancellationToken);

        _salesOrderService.Recalculate(entity.Id);

        return new UpdateSalesOrderResult
        {
            Data = entity
        };
    }
}