EasyFramework/sample/Tenant.Api/DDD/Domain/Services/TenantDomainService.cs

using Easy;
using Easy.DDD.Domain;
using Easy.DDD.Domain.Repositories;
using Microsoft.EntityFrameworkCore;
using TenantManagement.Api.DDD.Domain.Entites;
using TenantManagement.Api.DDD.Shared.IServices;

namespace TenantManagement.Api.DDD.Domain.Services;

public class TenantDomainService : DomainService, ITenantDomainService
{
    protected IRepository<Tenant> TenantRepository { get; }
    public TenantDomainService(IRepository<Tenant> tenantRepository)
    {
        TenantRepository = tenantRepository;
    }
    public virtual async Task<Tenant> CreateAsync(string name)
    {
        Check.NotNull(name, nameof(name));

        await ValidateNameAsync(name);
        return new Tenant(GuidGenerator.Create(), name);
    }

    public virtual async Task ChangeNameAsync(Tenant tenant, string name)
    {
        await ValidateNameAsync(name, tenant.Id);

        tenant.SetName(name);
    }

    protected virtual async Task ValidateNameAsync(string name, Guid? expectedId = null)
    {
        When.Is(string.IsNullOrEmpty(name),"租户名称不能为空");

        var tenant = await TenantRepository.Where(o => o.TenantName == name).FirstOrDefaultAsync();

        When.Is(tenant != null && tenant.Id != expectedId, "重复的租户名称: " + name);
    }
}