export type SqlValue = string | number | null | Uint8Array;

export interface QueryExecResult {
  columns: Array<string>;
  values: Array<Array<SqlValue>>;
}

export interface DatabaseExecResult {
  changes: number;
  lastId?: number;
}

export interface DatabaseService {
  initialize(): Promise<void>;
  query(sql: string, params?: unknown[]): Promise<QueryExecResult[]>;
  run(sql: string, params?: unknown[]): Promise<DatabaseExecResult>;
}

/**
 * Generic database result type for mapped query results
 */
export type DatabaseResult<T = Record<string, unknown>> = T;

/**
 * Database query result that can be either a single result or an array
 */
export type DatabaseQueryResult<T = Record<string, unknown>> = T | T[] | null;