import { type ColumnDefinition, type ProjectionDefinition, type SkipIndexDefinition, type TableDefinition } from '@chkit/core';
type TableDriftReasonCode = 'missing_column' | 'extra_column' | 'changed_column' | 'setting_mismatch' | 'index_mismatch' | 'ttl_mismatch' | 'engine_mismatch' | 'primary_key_mismatch' | 'order_by_mismatch' | 'partition_by_mismatch' | 'unique_key_mismatch' | 'projection_mismatch';
type ObjectDriftReasonCode = 'missing_object' | 'extra_object' | 'kind_mismatch';
type DriftReasonCode = ObjectDriftReasonCode | TableDriftReasonCode;
interface SchemaObjectShape {
    kind: 'table' | 'view' | 'materialized_view';
    database: string;
    name: string;
}
export interface ObjectDriftDetail {
    code: ObjectDriftReasonCode;
    object: string;
    expectedKind?: SchemaObjectShape['kind'];
    actualKind?: SchemaObjectShape['kind'];
}
interface ActualTableShape {
    columns: ColumnDefinition[];
    settings: Record<string, string>;
    indexes: SkipIndexDefinition[];
    ttl?: string;
    engine?: string;
    primaryKey?: string;
    orderBy?: string;
    uniqueKey?: string;
    partitionBy?: string;
    projections: ProjectionDefinition[];
}
export interface TableDriftDetail {
    table: string;
    reasonCodes: TableDriftReasonCode[];
    missingColumns: string[];
    extraColumns: string[];
    changedColumns: string[];
    settingDiffs: string[];
    indexDiffs: string[];
    ttlMismatch: boolean;
    engineMismatch: boolean;
    primaryKeyMismatch: boolean;
    orderByMismatch: boolean;
    uniqueKeyMismatch: boolean;
    partitionByMismatch: boolean;
    projectionDiffs: string[];
}
interface DriftReasonSummary {
    counts: Partial<Record<DriftReasonCode, number>>;
    total: number;
    object: number;
    table: number;
}
export declare function compareSchemaObjects(expectedObjects: SchemaObjectShape[], actualObjects: SchemaObjectShape[]): {
    missing: string[];
    extra: string[];
    kindMismatches: Array<{
        expected: string;
        actual: string;
        object: string;
    }>;
    objectDrift: ObjectDriftDetail[];
};
export declare function summarizeDriftReasons(input: {
    objectDrift: ObjectDriftDetail[];
    tableDrift: TableDriftDetail[];
}): DriftReasonSummary;
export declare function compareTableShape(expected: TableDefinition, actual: ActualTableShape): TableDriftDetail | null;
export {};
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