using Netina.Domain.Entities.Orders;
using Netina.Repository.Abstracts;

namespace Netina.Repository.Handlers.Orders;

public class GetOrderLDtoQueryHandler(IRepositoryWrapper repositoryWrapper,ICurrentUserService currentUserService)
    : IRequestHandler<GetOrderLDtoQuery, OrderLDto>
{
    public async Task<OrderLDto> Handle(GetOrderLDtoQuery request, CancellationToken cancellationToken)
    {
        if (currentUserService.Permissions == null)
            throw new BaseApiException(ApiResultStatusCode.UnAuthorized);
        if (request.Id == default)
            throw new AppException("Order id is null");

        var order = await repositoryWrapper.SetRepository<Order>()
            .TableNoTracking
            .Where(o => o.Id == request.Id)
            .Select(OrderMapper.ProjectToLDto)
            .FirstOrDefaultAsync(cancellationToken);
        if (currentUserService.Permissions.Contains(ApplicationPermission.ViewMineOrders) && !currentUserService.Permissions.Contains(ApplicationPermission.ViewAllOrders))
        {
            if (currentUserService.UserId.IsNullOrEmpty() || !Guid.TryParse(currentUserService.UserId, out Guid userId))
                throw new BaseApiException(ApiResultStatusCode.UnAuthorized);

            var customer = await repositoryWrapper.SetRepository<Customer>()
                .TableNoTracking
                .FirstOrDefaultAsync(c => c.UserId == userId, cancellationToken);

            if (customer == null || order.CustomerId != customer.Id)
                throw new BaseApiException(ApiResultStatusCode.UnAuthorized);
        }
        if (order == null)
            throw new AppException("Order not found", ApiResultStatusCode.NotFound);
        return order;
    }
}