import Database from "better-sqlite3";
/**
 * DatabaseAdapter interface to standardize database operations
 * This provides a consistent API for database access across the application
 */
export interface DatabaseAdapter {
    db: Database.Database;
    /**
     * Execute a SELECT query and return all matching rows
     * @param sql SQL query with placeholders
     * @param params Query parameters
     * @returns Array of matching rows
     */
    all(sql: string, params?: any[]): Promise<any[]>;
    /**
     * Execute a SELECT query and return the first matching row
     * @param sql SQL query with placeholders
     * @param params Query parameters
     * @returns First matching row or undefined if none found
     */
    get(sql: string, params?: any[]): Promise<any>;
    /**
     * Execute an INSERT, UPDATE, or DELETE query
     * @param sql SQL query with placeholders
     * @param params Query parameters
     * @returns Result object with lastID and changes properties
     */
    run(sql: string, params?: any[]): Promise<{
        lastID: number;
        changes: number;
    }>;
    /**
     * Prepare a statement for later execution
     * @param sql SQL query with placeholders
     * @returns Prepared statement
     */
    prepare(sql: string): any;
    /**
     * Execute a SQL query without returning results
     * @param sql SQL query
     */
    exec(sql: string): void;
    /**
     * Close the database connection
     */
    close(): void;
}