/*
 * 计算密码复杂度
 */

function isAllNumberOrAlph(password) {
    return /^[0-9]+$/.test(password) || /^[A-Za-z]+$/.test(password) || password.length === 0 ? 0 : 1;
}

function computeComplex(password) {
    var lengthS = 0;
    var length = password.length;


    if (length === 0) {
        lengthS = 0;
    } else if (length < 6 && length > 0) {
        lengthS = 0 + isAllNumberOrAlph(password);
    } else if (length >= 6 && length <= 16) {
        lengthS = 1 + isAllNumberOrAlph(password);
    } else {
        lengthS = 2 + isAllNumberOrAlph(password);
    }

    return lengthS;
}

module.exports = computeComplex;