import { ValidationOptions } from "../ValidationOptions";
import { ValidationMetadataArgs } from "../../metadata/ValidationMetadataArgs";
import { ValidationTypes } from "../../validation/ValidationTypes";
import { ValidationMetadata } from "../../metadata/ValidationMetadata";
import { getMetadataStorage } from "../../metadata/MetadataStorage";

/**
 * If object has both allowed and not allowed properties a validation error will be thrown.
 */
export function Allow(validationOptions?: ValidationOptions): PropertyDecorator {
    return function (object: object, propertyName: string): void {
        const args: ValidationMetadataArgs = {
            type: ValidationTypes.WHITELIST,
            target: object.constructor,
            propertyName: propertyName,
            validationOptions: validationOptions
        };
        getMetadataStorage().addValidationMetadata(new ValidationMetadata(args));
    };
}