const changeRobotMapDataToArray = (source) => {
    if (!source) {
        return [];
    }
    let str = "";
    try {
        // = atob(source); //浏览器自带解码base64的api
        str = atob(source);
    } catch (err) {
        // console.log('err: ', err);
    }
    let arr = [];
    for (let i = 0; i < str.length; i++) {
        arr.push(str.substr(i, 1).charCodeAt());
    }
    return arr;
};

const random = (lower, upper) => {
    return Math.floor(Math.random() * (upper - lower)) + lower;
};

const fixZero = (num, n) => {
    return (Array(n).join(0) + num).slice(-n);
};

const getRandomId = () => {
    return "id" + new Date().getTime() + fixZero(random(1, 999), 3);
};

export {
    changeRobotMapDataToArray,
    random,
    fixZero,
    getRandomId
}