/**
 * @license
 * Copyright 2026 Alibaba Group Holding Limited
 * SPDX-License-Identifier: Apache-2.0
 */
import type { DatabaseSync } from 'node:sqlite';
import { type MemoryConfig, type MemoryLogger } from './config.js';
import { type LtmField } from './schema.js';
export { LTM_FIELDS, LTM_FIELD_NAMES, LTM_SINGLE_VALUE, LTM_TRIM_ORDER, } from './schema.js';
export type { LtmField } from './schema.js';
export interface StmRow {
    id: number;
    content: string;
    status: 'ongoing' | 'upcoming';
    created_at: string;
    created_ts: number;
    event_date: string | null;
    expires_at: string | null;
    active: number;
    expired_at: string | null;
}
export interface SelectedStm {
    id: number;
    content: string;
    score: number;
    status: 'ongoing' | 'upcoming';
    recorded_at: string;
    event_date: string | null;
    created_ts: number;
}
export interface DroppedStm {
    id: number;
    score: number;
    status: 'ongoing' | 'upcoming';
    recorded_at: string;
    event_date: string | null;
    reason: 'over_max_items' | 'over_max_chars';
}
export interface PreloadResult {
    userProfile: string;
    recent: string;
    ltmFields: LtmField[];
    ltmTrimmed: LtmField[];
    stmSelected: SelectedStm[];
    stmDropped: DroppedStm[];
    nExpiredThisRun: number;
    nActiveAfterExpiry: number;
}
export declare function refreshStmActive(database: DatabaseSync, config?: MemoryConfig['preload'], now?: Date, log?: MemoryLogger): number;
export declare function loadLtm(database: DatabaseSync, config?: MemoryConfig['preload'], log?: MemoryLogger): {
    values: Partial<Record<LtmField, string[]>>;
    present: LtmField[];
};
export declare function scoreStmItem(row: StmRow, now: Date, config: MemoryConfig['preload']): number;
export declare function readStmRows(database: DatabaseSync): StmRow[];
export declare function selectStm(database: DatabaseSync, config?: MemoryConfig['preload'], now?: Date, log?: MemoryLogger): {
    selected: SelectedStm[];
    dropped: DroppedStm[];
    nActive: number;
};
export declare function loadPreload(database: DatabaseSync, sessionId: string, config?: MemoryConfig['preload'], now?: Date, log?: MemoryLogger): PreloadResult;