import { DuckDBService } from '../duckdb/service.js';
/**
 * Resource types that can be mapped to DuckDB tables
 */
export declare enum ResourceType {
    JSON = "application/json",
    CSV = "text/csv",
    PARQUET = "application/parquet",
    TEXT = "text/plain",
    UNKNOWN = "unknown"
}
/**
 * Metadata about a mapped resource
 */
export interface MappedResource {
    resourceUri: string;
    tableName: string;
    resourceType: ResourceType;
    serverAlias?: string;
    createdAt: Date;
    lastRefresh?: Date;
    rowCount?: number;
    columns?: Array<{
        name: string;
        type: string;
    }>;
}
/**
 * Maps MCP resources to DuckDB tables
 */
export declare class ResourceMapper {
    private mappedResources;
    private duckdb;
    constructor(duckdb: DuckDBService);
    /**
     * Detect resource type from MIME type or content
     */
    detectResourceType(mimeType?: string, content?: string): ResourceType;
    /**
     * Map a resource to a DuckDB table
     */
    mapResource(resourceUri: string, tableName: string, data: any, mimeType?: string, serverAlias?: string): Promise<MappedResource>;
    /**
     * Map JSON data to a DuckDB table
     */
    private mapJSONResource;
    /**
     * Map CSV data to a DuckDB table
     */
    private mapCSVResource;
    /**
     * Map Parquet data to a DuckDB table
     */
    private mapParquetResource;
    /**
     * Handle Parquet file reference from MCPClient
     */
    private handleParquetFileReference;
    /**
     * Convert array of objects to CSV string
     */
    private arrayToCSV;
    /**
     * Refresh a mapped resource
     */
    refreshResource(tableName: string, newData: any): Promise<MappedResource>;
    /**
     * Get information about a mapped resource
     */
    getMappedResource(tableName: string): MappedResource | undefined;
    /**
     * List all mapped resources
     */
    listMappedResources(): MappedResource[];
    /**
     * Unmap a resource (drop the table)
     */
    unmapResource(tableName: string): Promise<void>;
    /**
     * Clear all mapped resources
     */
    clearAllMappings(): Promise<void>;
}
//# sourceMappingURL=ResourceMapper.d.ts.map