import type { CallbackAttemptOutcome } from "./callback-transport.js";
/**
 * Store-neutral claim metadata shared by durable callback and Watch outboxes.
 * Persistence adapters deliberately choose their own status names and fields.
 */
export interface DurableNotificationLease {
    attempt: number;
    attemptId: string;
    attemptedAt: string;
    leaseExpiresAt: string;
}
export declare function createDurableNotificationLease(input: {
    previousAttempts: number;
    attemptId: string;
    attemptedAt: string;
    leaseBaseMs: number;
    leaseMs: number;
}): DurableNotificationLease;
export type DurableNotificationRetryDecision = {
    state: "retryable";
    attempt: number;
} | {
    state: "waiting";
    attempt: number;
    retry_at?: string;
} | {
    state: "in_flight";
    attempt: number;
    lease_expires_at?: string;
} | {
    state: "non_retryable";
    attempt: number;
} | {
    state: "settled";
    attempt: number;
} | {
    state: "exhausted";
    attempt: number;
};
export type DurableNotificationRetryFacts = {
    phase: "ready";
    attempt: number;
    maxAttempts?: number;
} | {
    phase: "retry_wait";
    attempt: number;
    nowMs: number;
    retryAt?: string;
    retryAuthorized: boolean;
    maxAttempts?: number;
} | {
    phase: "leased";
    attempt: number;
    nowMs: number;
    leaseExpiresAt?: string;
    maxAttempts?: number;
} | {
    phase: "settled";
    attempt: number;
};
/**
 * Decide whether a durable notification attempt may be claimed. The caller
 * supplies only persisted facts plus its clock observation; no I/O or Store
 * shape is owned here.
 */
export declare function decideDurableNotificationRetry(facts: DurableNotificationRetryFacts): DurableNotificationRetryDecision;
export type DurableNotificationSettlement = {
    state: "accepted";
    outcome: Extract<CallbackAttemptOutcome, {
        disposition: "accepted";
    }>;
} | {
    state: "superseded";
    outcome: Exclude<CallbackAttemptOutcome, {
        disposition: "accepted";
    }>;
} | {
    state: "failed";
    outcome: Exclude<CallbackAttemptOutcome, {
        disposition: "accepted";
    }>;
    retryAuthorized: boolean;
};
/**
 * Reduce one authoritative transport outcome into a Store-neutral settlement.
 * Conversation and Watch adapters retain their distinct status/error schemas.
 */
export declare function reduceDurableNotificationSettlement(input: {
    attempt: number;
    outcome: CallbackAttemptOutcome;
    retryEnabled: boolean;
    maxRetryAttempts?: number;
    supersede?: boolean;
}): DurableNotificationSettlement;