import type { Session } from "neo4j-driver";
export type ConnectorKind = "google" | "m365" | "none";
export interface BusyInterval {
    start: string;
    end: string;
}
export interface ConnectorBusyInput {
    connector: ConnectorKind;
    busy: BusyInterval[];
}
export interface SyncResult {
    connector: ConnectorKind;
    busyBlocks: number;
    reflected: number;
}
/**
 * Wholesale-replace the account's :ConnectorBusy nodes with the busy intervals
 * the admin turn read from its calendar connector. Delete-then-insert so an
 * upstream-deleted connector event stops blocking on the next sync, and a
 * deauthorised connector (connector='none', busy=[]) clears all blocks.
 *
 * The delete and every insert run in ONE write transaction so the replace is
 * all-or-nothing: a concurrent /api/calendar/free-busy read never observes the
 * transient empty set between clear and re-insert (which would publish a real
 * busy time as an open slot), and a mid-write failure rolls back to the prior
 * complete set rather than leaving a partial one.
 *
 * The LLM read the connector; this write and the counts are deterministic.
 */
export declare function syncConnectorBusy(session: Session, accountId: string, input: ConnectorBusyInput): Promise<SyncResult>;
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