import type Database from "better-sqlite3";
export interface ContactAccessContext {
    chatType: "p2p" | "group";
}
export interface UserContact {
    id: string;
    name: string | null;
    name_source: string | null;
    platform: string;
    platform_id: string;
    is_bot: number;
    created_at: string;
}
export interface ChatContact {
    id: string;
    type: string;
    name: string | null;
    platform: string;
    platform_id: string;
    user_id: string | null;
    created_at: string;
}
export declare function assertContactsAccess(ctx: ContactAccessContext): void;
export declare function listUsers(db: Database.Database, filters: {
    name?: string;
    platform?: string;
}): UserContact[];
export declare function listChats(db: Database.Database, filters: {
    type?: string;
    name?: string;
    userId?: string;
}): ChatContact[];
export declare function resolveUserId(db: Database.Database, input: string): string | null;
export declare function resolveChatId(db: Database.Database, input: string): string | null;
export declare function getUser(db: Database.Database, id: string): UserContact | undefined;
export declare function getChat(db: Database.Database, id: string): ChatContact | undefined;
export declare function setUserManualName(db: Database.Database, userId: string, name: string): void;
export declare function countUserMemories(db: Database.Database, userId: string): number;
export declare function countChatMessages(db: Database.Database, chatId: string): number;
export declare function countChatSessions(db: Database.Database, chatId: string): number;