import { ID } from './Conversation';
export declare const CONVERSATION_ASSIGNMENT_EVENTS_COLLECTION = "conversation_assignment_events";
export type ConversationAssignmentEventType = 'enqueued' | 'routing_started' | 'offered' | 'assigned' | 'accepted' | 'transferred' | 'released' | 'timed_out' | 'requeued';
export type ConversationAssignmentReason = 'conversation_created' | 'routing_selected' | 'manual_assignment' | 'manual_transfer' | 'flow_routing' | 'offer_timeout' | 'assignment_timeout' | 'agent_accepted' | 'agent_released' | 'supervisor_released' | 'capacity_rebalance' | 'sla_escalation' | 'system_recovery';
export type AssignmentOwnerReference = {
    type: 'none';
    id?: never;
} | {
    type: 'user' | 'bot' | 'flow';
    id: ID;
};
export type AssignmentStateReference = {
    status: 'unrouted';
    assignmentId?: never;
    queueId?: never;
    owner: {
        type: 'none';
        id?: never;
    } | {
        type: 'bot' | 'flow';
        id: ID;
    };
} | {
    status: 'queued' | 'routing';
    assignmentId: ID;
    queueId: ID;
    owner: {
        type: 'none';
        id?: never;
    };
} | {
    status: 'offered' | 'assigned' | 'accepted';
    assignmentId: ID;
    queueId: ID;
    owner: {
        type: 'user';
        id: ID;
    };
};
export type AssignmentActorReference = {
    type: 'system';
    id?: never;
} | {
    type: 'user' | 'bot' | 'flow';
    id: ID;
};
/**
 * Immutable domain event stored in conversation_assignment_events.
 *
 * Events must only be inserted. Corrections are represented by a new event.
 */
export interface ConversationAssignmentEvent {
    id: ID;
    spaceId: ID;
    conversationId: ID;
    /**
     * Monotonic order within a conversation.
     */
    sequence: number;
    eventType: ConversationAssignmentEventType;
    reason: ConversationAssignmentReason;
    /**
     * Undefined only when no previous assignment state existed.
     */
    previous?: AssignmentStateReference;
    current: AssignmentStateReference;
    actor: AssignmentActorReference;
    routingDecisionId?: ID;
    /**
     * Version of conversations after applying the transition.
     */
    conversationVersion: number;
    correlationId?: ID;
    causationId?: ID;
    idempotencyKey: string;
    /**
     * Domain time and persistence time, respectively.
     */
    occurredAt: Date;
    recordedAt: Date;
}