type PortalRequestAttachment = {
    fileName: string;
    contentType: string;
    storageRef: string;
};
export type PortalRequestStatus = 'submitted' | 'imported' | 'started';
export type PortalRequestRecord = {
    requestId: string;
    createdAt: string;
    source: 'welcomtalk-portal';
    fullName: string;
    topic: string;
    summary: string;
    additionalNotes: string;
    status: PortalRequestStatus;
    attachments: PortalRequestAttachment[];
    importedAt?: string;
    startedAt?: string;
    hostDisplayName?: string;
    sessionCode?: string;
    expiresAt: string;
};
export declare class PortalRequestsStore {
    private mongoClient;
    private collection;
    private memoryStore;
    ready: Promise<void>;
    constructor(mongoURI?: string);
    private setup;
    private normalizeDocument;
    private toRecord;
    private normalizeStatusUpdate;
    private cleanupExpiredMemory;
    create(input: any): Promise<PortalRequestRecord>;
    get(requestId: string): Promise<PortalRequestRecord | null>;
    updateStatus(requestId: string, input: any): Promise<PortalRequestRecord | null>;
    close(): Promise<void>;
}
export {};