import * as MongoDB from "mongodb";
import * as Skmatc from "skmatc";
import { Instance } from "./Instance";
import { Model } from "./Model";
import { IndexSpecification } from "./Index";
import { InstanceImplementation } from "./InstanceInterface";
import * as MapReduceDef from "./MapReduce";
/**
 * Specifies the name of the collection to which this instance's documents should be sent.
 * @param {string} name The name of the MongoDB collection to store the documents in.
 *
 * This decorator replaces the use of the static collection property on instance implementation
 * classes. If your transpiler does not support decorators then you are free to make use of the
 * property instead.
 */
export declare function Collection(name: string): (target: InstanceImplementation<any, any>) => void;
/**
 * Specifies a MongoDB collection level index to be managed by Iridium for this instance type.
 * More than one instance of this decorator may be used if you wish to specify multiple indexes.
 * @param {IndexSpecification} spec The formal index specification which defines the properties and ordering used in the index.
 * @param {MongoDB.IndexOptions} options The options dictating the way in which the index behaves.
 *
 * This decorator replaces the use of the static indexes property on instance implementation
 * classes. If your transpiler does not support decorators then you are free to make use of the
 * property instead.
 */
export declare function Index(spec: IndexSpecification, options?: MongoDB.IndexOptions): (target: InstanceImplementation<any, any>) => void;
/**
 * Specifies a custom validator to be made available for this collection's schema.
 * More than one instance of this decorator may be used if you wish to specify multiple validators.
 * @param {Object} forType The value in the schema which will be delegated to this function for validation.
 * @param {function} validate A function which calls this.assert(condition) to determine whether a schema node is valid or not.
 *
 * This decorator replaces the use of the static validators property on instance implementation
 * classes. If your transpiler does not support decorators then you are free to make use of the
 * property instead.
 *
 * @example
 * @Iridium.Validate('everything', function(schema, data, path) {
 * 		return this.assert(data == 42, "Expected the answer to life, the universe and everything.");
 * })
 */
export declare function Validate(forType: any, validate: Skmatc.IValidationHandler): (target: InstanceImplementation<any, any>) => void;
/**
 * Specifies the schema type for the property this decorator is applied to. This can be used to replace the
 * static schema property on your instance. Multiple instances of this decorator can be applied, but no more
 * than one per property.
 *
 * @param {Object} asType The schema validation type to make use of for this property
 * @param {Boolean} [required] Whether this property is required to have a value or not, defaults to true.
 */
export declare function Property(asType: any, required?: boolean): (target: Instance<any, any>, name: string) => void;
/**
 * Specifies the schema type for a property with the given name on the class this decorator is applied to. This
 * can either compliment or replace the static schema property on your instance class.
 *
 * @param {String} name The name of the property that is being targetted
 * @param {Object} asType The schema validation type to make use of for this property
 * @param {Boolean} [required] Whether this property is required to have a value or not, defaults to true.
 */
export declare function Property(name: string, asType: any, required?: boolean): (target: InstanceImplementation<any, any>) => void;
/**
 * Specifies a custom transform to be applied to the property this decorator is applied to.
 *
 * @param {function} fromDB The function used to convert values from the database for the application.
 * @param {function} toDB The function used to convert values from the application to the form used in the database.
 *
 * Property transforms are lazily evaluated when their fields are accessed for performance reasons.
 * Modifying the values of an array or object will *not* trigger its transform function unless the
 * document level property is re-assigned.
 *
 * This decorator can either compliment or replace the static transforms property on your instance
 * class, however only one transform can be applied to any property at a time.
 * If your transpiler does not support decorators then you are free to make use of the
 * property instead.
 *
 * If this decorator is applied to the instance class itself, as opposed to a property, then
 * it will be treated as a $document transformer - and will receive the full document as opposed
 * to individual property values. Similarly, it is expected to return a full document when either
 * fromDB or toDB is called.
 */
export declare function Transform(fromDB: (value: any, property: string, model: Model<any, any>) => any, toDB: (value: any, property: string, model: Model<any, any>) => any): (target: InstanceImplementation<any, any> | Instance<any, any>, property?: string) => void;
/**
 * Specifies that this property should be treated as an ObjectID, with the requisite validator and transforms.
 *
 * This decorator applies an ObjectID validator to the property, which ensures that values sent to the database
 * are instances of the MongoDB ObjectID type, as well as applying a transform operation which converts ObjectIDs
 * to strings for your application, and then converts strings back to ObjectIDs for the database.
 */
export declare function ObjectID(target: Instance<any, any>, name: string): void;
/**
 * Specifies that this property should be stored using the MongoDB binary type and represented as a Buffer.
 *
 * This decorator applies a Buffer validator to the property, which ensures that values you send to the database
 * are well formatted Buffer objects represented using the BSON Binary datatype. In addition to this, it will
 * apply a transform which ensures you only work with Buffer objects and that data is always stored in Binary
 * format.
 */
export declare function Binary(target: Instance<any, any>, name: string): void;
/**
 * Specifies that the instance is a result of a mapReduce operation and functions of that operation.
 *
 * @param TDocument Interface of the document on which the operation will run
 * @param Key Type of the mapped keys
 * @param Value Type of the mapped values
 *
 * @param {MapReduce.MapFunction<TDocument>} map A function which maps documents.
 * @param {MapReduce.ReduceFunction<Key, Value>} reduce A function which reduces mapped pairs.
 *
 * This decorator replaces the use of the static mapReduce property on instance implementation
 * classes. If your transpiler does not support decorators then you are free to make use of the
 * property instead.
 */
export declare function MapReduce<TDocument, Key, Value>(map: MapReduceDef.MapFunction<TDocument>, reduce: MapReduceDef.ReduceFunction<Key, Value>): (target: InstanceImplementation<any, any>) => void;