/**
* Author: Đào Quốc Huy / huydaoquoc88@gmail.com
* Description: Accept number, empty
*/
import { registerDecorator, ValidationArguments, ValidationOptions, ValidatorConstraint, ValidatorConstraintInterface } from 'class-validator';
/**
 * @Example `@IsNumber_I18n()`.
 * @Return true if not set
 * @Require i18n translate: "validation.INVALID_NUMBER"
 */

export function IsNumber_I18n(validationOptions?: ValidationOptions) {
    return (object: any, propertyName: string) => {
        registerDecorator({
            target: object.constructor,
            propertyName,
            options: validationOptions,
            constraints: [],
            validator: IsNumber_I18nConstraint,
        });
    };
}

@ValidatorConstraint({ name: 'IsNumber_I18n' })
export class IsNumber_I18nConstraint implements ValidatorConstraintInterface {

    validate(value: any, validationArguments?: ValidationArguments) {
        if (typeof value === "number") {
            return true
        } else if (typeof value === "string" && value.match(/ /) !== null) { // dont space
            return false
        } else if (typeof value === "string") {
            let valueParse = parseFloat(value)
            if ((value !== undefined && value !== null && !isNaN(valueParse)) && typeof valueParse === "number") {
                return true
            } else if(typeof value === undefined || value === null){
                return true
            }else {
                return false
            }
        } else {
            return false
        }
    }
    defaultMessage(validationArguments?: ValidationArguments): string {
        return "validation.INVALID_NUMBER"
    }

}