thanhnguyennguyen / cff

const expiredPeriod = 30 * 24 * 60 * 60 * 1000; // 30 days

/**

 * 

 * @param {Array} data

 * @return {object}

 */

const findActualActivationDate = (data) => {

    // put your code here to address problems

    if (!data || data.length === 0) {

        return {};

    }

    let i = data.length - 1;

    let result = {

        PHONE_NUMBER: data[i].phone,

        REAL_ACTIVATIONDATE: data[i].activation

    };

    while (i > 0) {

        if (new Date(data[i].activation) - new Date(data[i - 1].deactivation) >= expiredPeriod) {

            let result = {

                PHONE_NUMBER: data[i].phone,

                REAL_ACTIVATIONDATE: data[i].activation

            };

            result.REAL_ACTIVATIONDATE = data[i].activation;

            return result;

        }

        i--;

    }

    // actualActivation date is the first activation date

    result.REAL_ACTIVATIONDATE = data[i].activation;

    return result;

}

/**

 * 

 * @param {Array} data

 * @return {boolean}

 */

const validateData = (data) => {

    if (!data || data.length === 0) {

        return false;

    }

    let numberRegex = /^\d+$/;

    let dateRegex = /^\d{4}-\d{2}-\d{2}$/;

    let activation = data[1] || ''; // not later than deactivation

    let deactivation = data[2] || ''; // can be empty

    if (deactivation.length) {

        return numberRegex.test(data[0] || '') && dateRegex.test(activation) && dateRegex.test(deactivation) && (deactivation >= activation);

    }

    return numberRegex.test(data[0] || '') && dateRegex.test(activation);

}

module.exports = {

    findActualActivationDate,

    validateData

};