eventhub/src/EventHub.Domain/Organizations/OrganizationManager.cs

using System;
using System.Threading.Tasks;
using Volo.Abp;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.Domain.Services;

namespace EventHub.Organizations
{
    public class OrganizationManager : DomainService
    {
        private readonly IRepository<Organization, Guid> _organizationRepository;

        public OrganizationManager(IRepository<Organization, Guid> organizationRepository)
        {
            _organizationRepository = organizationRepository;
        }

        public async Task<Organization> CreateAsync(
            Guid ownerUserId,
            string name,
            string displayName,
            string description)
        {
            name = name.Trim().Replace(' ', '-').ToKebabCase().ToLowerInvariant();;

            if (await _organizationRepository.AnyAsync(o => o.Name == name))
            {
                throw new BusinessException(EventHubErrorCodes.OrganizationNameAlreadyExists)
                    .WithData("Name", name);
            }

            return new Organization(
                GuidGenerator.Create(),
                ownerUserId,
                name,
                displayName,
                description
            );
        }
    }
}