Method delete_dns_credential

gateway/src/admin_service.rs:397–421

(self, request: DeleteDnsCredentialRequest)

    }

    async fn delete_dns_credential(self, request: DeleteDnsCredentialRequest) -> Result<()> {
        let kv_store = self.state.kv_store();

        // Check if this is the default credential
        if let Some(default_id) = kv_store.get_default_dns_credential_id() {
            if default_id == request.id {
                bail!("cannot delete the default DNS credential; set a different default first");
            }
        }

        // Check if any ZT-Domain configs reference this credential
        let configs = kv_store.list_zt_domain_configs();
        for config in configs {
            if config.dns_cred_id.as_deref() == Some(&request.id) {
                bail!(
                    "cannot delete DNS credential: domain {} uses it",
                    config.domain
                );
            }
        }

        kv_store.delete_dns_credential(&request.id)?;
        info!("Deleted DNS credential: {}", request.id);
        Ok(())
    }

    async fn get_default_dns_credential(self) -> Result<GetDefaultDnsCredentialResponse> {
        let kv_store = self.state.kv_store();