export default function useValidators() {

    const isEmpty = (fieldName, fieldValue) => {
        return !fieldValue ? `The ${fieldName} is required`:"";
    }

    const minLength = (fieldName, fieldValue, min) => {
        return fieldValue.length < min ? `The ${fieldName} field must be at least ${min} characters long` : "";
    }

    const maxLength = (fieldName, fieldValue, max) => {
        return fieldValue.length > max ? `The ${fieldName} cannot be greater than ${max} characters long` : "";
    }

    const isEmail = (fieldName, fieldValue) => {
        let re = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
        return !re.test(fieldValue) ? "The input is not a valid " + fieldName + " address" : "";
    }

    const isNum = (fieldName, fieldValue) => {
        let isNum = /^\d+$/.test(fieldValue);
        return !isNum ? "The " + fieldName + " field only have numbers" : "";
    }

    const isInt = (fieldName, fieldValue) => {
        let test = /^\d+$/.test(fieldValue);
        return !test ? "The " + fieldName + " must be integer" : "";
    }

    return { isEmpty, minLength, isEmail, isNum,isInt,maxLength}
}