/**
 * DuckLake Migration Utilities
 * @internal - Helper functions for migrating data to DuckLake format
 */
import { DuckDBService } from '../duckdb/service.js';
import { SpaceContextFactory } from '../context/SpaceContext.js';
export interface MigrationOptions {
    source: string | string[];
    catalogName: string;
    tableName: string;
    spaceId?: string;
    format?: 'DELTA' | 'ICEBERG';
    partitionBy?: string[];
    overwrite?: boolean;
    validateSchema?: boolean;
    batchSize?: number;
    compressionType?: 'ZSTD' | 'SNAPPY' | 'LZ4' | 'GZIP' | 'NONE';
}
export interface MigrationResult {
    success: boolean;
    tableName: string;
    rowCount: number;
    version: number;
    duration: number;
    errors?: string[];
}
/**
 * Main migration utility class
 */
export declare class DuckLakeMigration {
    private duckdb;
    private spaceFactory?;
    private ducklakeService;
    private adapter?;
    constructor(duckdb: DuckDBService, spaceFactory?: SpaceContextFactory | undefined);
    /**
     * Migrate Parquet files to DuckLake
     */
    migrateParquet(options: MigrationOptions): Promise<MigrationResult>;
    /**
     * Migrate CSV files to DuckLake
     */
    migrateCSV(options: MigrationOptions & {
        csvOptions?: any;
    }): Promise<MigrationResult>;
    /**
     * Migrate from a SQL query result to DuckLake
     */
    migrateFromQuery(options: MigrationOptions & {
        query: string;
        operation?: string;
    }): Promise<MigrationResult>;
    /**
     * Batch migrate multiple tables
     */
    batchMigrate(migrations: MigrationOptions[]): Promise<{
        total: number;
        successful: number;
        failed: number;
        results: MigrationResult[];
    }>;
    /**
     * Validate migration before executing
     */
    validateMigration(options: MigrationOptions): Promise<{
        valid: boolean;
        warnings: string[];
        errors: string[];
    }>;
}
/**
 * Create migration tool handlers for MCP
 */
export declare function createMigrationToolHandlers(duckdb: DuckDBService, spaceFactory?: SpaceContextFactory): {
    'ducklake.migrate_parquet': (input: any) => Promise<MigrationResult>;
    'ducklake.migrate_csv': (input: any) => Promise<MigrationResult>;
    'ducklake.migrate_query': (input: any) => Promise<MigrationResult>;
    'ducklake.batch_migrate': (input: any) => Promise<{
        total: number;
        successful: number;
        failed: number;
        results: MigrationResult[];
    }>;
    'ducklake.validate_migration': (input: any) => Promise<{
        valid: boolean;
        warnings: string[];
        errors: string[];
    }>;
};
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