import { Condition } from '../conditions/index.js';
import { DeleteConfig } from './delete.js';
import { DynamoEntity } from '../core/entity.js';
import { ObjectLikeZodType, EntitySchema, TransactWriteOperation } from '../core/index.js';
import { ReturnValuesOnConditionCheckFailure, ItemCollectionMetrics } from '@aws-sdk/client-dynamodb';
import { BaseResult, BaseCommand, WriteTransactable } from './index.js';

/**
 * Configuration for the ConditionalDelete command.
 *
 * @template Schema - The Zod schema defining the structure of the entity.
 */
type ConditionalDeleteConfig<Schema extends ObjectLikeZodType> = DeleteConfig<Schema> & {
    condition: Condition;
    returnValuesOnConditionCheckFailure?: ReturnValuesOnConditionCheckFailure;
};
/**
 * Result of the ConditionalDelete command.
 *
 * @template Schema - The Zod schema defining the structure of the entity.
 */
type ConditionalDeleteResult<Schema extends ObjectLikeZodType> = BaseResult & {
    deletedItem?: Partial<EntitySchema<Schema>> | undefined;
    itemCollectionMetrics?: ItemCollectionMetrics;
};
/**
 * Command to remove an item with a condition expression.
 *
 * @template Schema - The Zod schema defining the structure of the entity.
 *
 * @example
 * ```typescript
 * import { DynamoTable, DynamoEntity, key, ConditionalDelete } from 'dynamo-document-builder';
 *
 * const table = new DynamoTable({
 *   tableName: 'ExampleTable',
 *   documentClient,
 * });
 *
 * const userEntity = new DynamoEntity({
 *   table,
 *   schema: z.object({
 *     userId: z.string(),
 *     status: z.string(),
 *   }),
 *   partitionKey: user => key('USER', user.userId),
 *   sortKey: () => 'METADATA',
 * });
 *
 * const conditionalDeleteCommand = new ConditionalDelete({
 *   key: { userId: 'user123' },
 *   condition: { status: 'inactive' },
 *   returnValues: 'ALL_OLD',
 * });
 *
 * const { deletedItem } = await userEntity.send(conditionalDeleteCommand);
 * ```
 */
declare class ConditionalDelete<Schema extends ObjectLikeZodType> implements BaseCommand<ConditionalDeleteResult<Schema>, Schema>, WriteTransactable<Schema> {
    #private;
    constructor(config: ConditionalDeleteConfig<Schema>);
    execute(entity: DynamoEntity<Schema>): Promise<ConditionalDeleteResult<Schema>>;
    prepareWriteTransaction(entity: DynamoEntity<Schema>): Promise<TransactWriteOperation>;
}

export { ConditionalDelete };
export type { ConditionalDeleteConfig, ConditionalDeleteResult };