import type { Pool as PoolType } from 'pg';
export interface DatabaseConfig {
    host?: string;
    port?: number;
    user?: string;
    password?: string;
    database?: string;
    connectionString?: string;
}
/**
 * Get or initialize the database pool
 */
export declare function getDatabase(): PoolType;
/**
 * Initialize database with connection parameters
 */
export declare function setupDatabase(config?: DatabaseConfig): Promise<PoolType>;
export declare function initializeDatabase(): Promise<void>;
export interface Conversation {
    id: string;
    parent_id: string | null;
    title: string;
    task_description: string;
    created_at: number;
}
export interface Message {
    id: string;
    conversation_id: string;
    prev_message_id: string | null;
    next_message_id: string | null;
    author: 'User' | 'Copilot';
    payload: string;
    created_at: number;
}
export interface MessageInput {
    author: 'User' | 'Copilot';
    payload: string;
}
//# sourceMappingURL=database.d.ts.map