import type { InstanceRegistration } from '@n8n/api-types';
import type { Constructable } from '@n8n/di';
export type ClusterStateDiff = {
    added: readonly InstanceRegistration[];
    removed: readonly InstanceRegistration[];
    changed: ReadonlyArray<{
        previous: InstanceRegistration;
        current: InstanceRegistration;
    }>;
};
export type ClusterCheckContext = {
    currentState: ReadonlyMap<string, InstanceRegistration>;
    previousState: ReadonlyMap<string, InstanceRegistration>;
    diff: ClusterStateDiff;
};
export type ClusterCheckWarning = {
    code: string;
    message: string;
    severity?: 'info' | 'warning' | 'error';
    context?: Record<string, unknown>;
};
export type ClusterCheckAuditEvent = {
    eventName: string;
    payload: Record<string, unknown>;
};
export type ClusterCheckPushNotification = {
    type: string;
    data: Record<string, unknown>;
};
export type ClusterCheckResult = {
    warnings?: ClusterCheckWarning[];
    auditEvents?: ClusterCheckAuditEvent[];
    pushNotifications?: ClusterCheckPushNotification[];
};
export type CheckDescription = {
    name: string;
    displayName?: string;
};
export interface IClusterCheck {
    checkDescription: CheckDescription;
    run(context: ClusterCheckContext): Promise<ClusterCheckResult>;
}
export type ClusterCheckClass = Constructable<IClusterCheck>;