import type { Database as DatabaseType } from 'better-sqlite3';
export interface MessageRow {
    id: number;
    topic_id: number;
    author_type: string;
    author_name: string;
    client_message_id: string | null;
    body: string;
    created_at: string;
}
export declare function insertMessage(db: DatabaseType, topicId: number, authorType: string, authorName: string, body: string, options?: {
    clientMessageId?: string | null;
}): number;
export declare function getMessages(db: DatabaseType, topicId: number, limit?: number): MessageRow[];
export declare function getRecentMessages(db: DatabaseType, topicId: number, count?: number): MessageRow[];
export declare function getMessageById(db: DatabaseType, id: number): MessageRow | undefined;
export declare function getMessageByClientMessageId(db: DatabaseType, topicId: number, clientMessageId: string): MessageRow | undefined;
export declare function getMessagesAround(db: DatabaseType, topicId: number, messageId: number, radius?: number): MessageRow[] | undefined;
export declare function insertMention(db: DatabaseType, messageId: number, agentName: string, active: boolean): void;
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