/**
 * Utility functions for connecting to Trino and extracting schema information.
 * All functions are lint/prettier compliant and ready for implementation.
 */
import type { PermitResource } from '../components/env/trino/types.js';
export interface TrinoColumn {
    name: string;
    type: string;
    nullable: boolean;
}
export interface TrinoTable {
    catalog: string;
    schema: string;
    name: string;
    type: string;
    columns: TrinoColumn[];
}
export interface TrinoSchema {
    catalog: string;
    name: string;
}
export interface TrinoCatalog {
    name: string;
}
export interface TrinoFunction {
    catalog: string;
    schema: string;
    name: string;
    returnType: string;
    argumentTypes: string[];
}
export interface TrinoView {
    catalog: string;
    schema: string;
    name: string;
    columns: TrinoColumn[];
}
export interface TrinoMaterializedView {
    catalog: string;
    schema: string;
    name: string;
    columns: TrinoColumn[];
}
export interface TrinoProcedure {
    catalog: string;
    schema: string;
    name: string;
    argumentTypes: string[];
}
export interface TrinoSchemaData {
    catalogs: TrinoCatalog[];
    schemas: TrinoSchema[];
    tables: TrinoTable[];
    functions: TrinoFunction[];
    views: TrinoView[];
    materializedViews: TrinoMaterializedView[];
    procedures: TrinoProcedure[];
}
/**
 * Map Trino column type to Permit attribute type.
 */
export declare function trinoTypeToPermitType(trinoType: string): 'string' | 'number' | 'object' | 'json' | 'time' | 'bool' | 'array' | 'object_array';
/**
 * Map Trino schema data to Permit resources.
 * - Each catalog, schema, table, and optionally column is a resource.
 * - Each table resource includes columns as attributes (with type/description).
 * @param trino - The Trino schema data to map
 * @param options - Configuration options
 * @param options.createColumnResources - Whether to create individual column resources (default: false)
 */
export declare function mapTrinoSchemaToPermitResources(trino: TrinoSchemaData, options?: {
    createColumnResources?: boolean;
}): PermitResource[];
export declare function connectToTrino(options: {
    url: string;
    user: string;
    password?: string;
}): {
    baseUrl: string;
    headers: Record<string, string>;
};
export declare function fetchTrinoFunctionsAndProceduresPassthrough(client: {
    baseUrl: string;
    headers: Record<string, string>;
}, catalog: string, schema: string): Promise<{
    functions: TrinoFunction[];
    procedures: TrinoProcedure[];
}>;
export declare function fetchTrinoSchema(client: {
    baseUrl: string;
    headers: Record<string, string>;
}, options: {
    catalog?: string;
    schema?: string;
}): Promise<TrinoSchemaData>;