using Easy.AuthorityManagement.Clean.Shared.IServices;
using Easy.DDD.Domain;
using Easy.Snowflakes;

namespace Easy.AuthorityManagement.Clean.Domain.Services;

public class TenantManager : DomainService, ITenantManager
{
    protected IRepository<Tenant> TenantRepository { get; }
    protected ISnowflakeIdGenerator SnowflakeIdGenerator => LazyServiceProvider.LazyGetService<ISnowflakeIdGenerator>();

    public TenantManager(IRepository<Tenant> tenantRepository)
    {
        TenantRepository = tenantRepository;
    }
    public virtual async Task<Tenant> CreateAsync(string name)
    {
        await ValidateNameAsync(name);
        return new Tenant(SnowflakeIdGenerator.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, long? expectedId = null)
    {
        When.Is(string.IsNullOrEmpty(name), "租户名称不能为空");

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

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