generate a google fit year report from google fit json data with javascript 通过google fit年度数据，生成你的年度步数信息

google fit data year report

/*
Author: LanHao
Time: 12/31/2021 19:31:27
*/

const steps = require('./stepdata');

let arr_month = []
let arr_day = []
let arr_hour = []
let hour_count = [];

function setMonthsStepData() {
    //取得每月走多少步，生成一个数组
    for (let el of steps.steps.data) {
        const currentMonth = parseInt((el.s).substring(5, 7)) - 1;
        if (arr_month[currentMonth]) {
            arr_month[currentMonth] += parseInt(el.v);
        } else {
            arr_month[currentMonth] = parseInt(el.v);
        }
    }
    // console.log(arr_month);
    getMaxMonth();
}

function getMaxMonth() {
    //取得最大月数
    const maxStepsInMonth = Math.max(...arr_month);
    console.log("Which Month I walked most: " + (arr_month.indexOf(maxStepsInMonth) + 1));
    console.log("I walked " + maxStepsInMonth + " steps in this month.\n");
}

function setDayData() {
    for (let el of steps.steps.data) {
        const currentMonth = parseInt((el.s).substring(5, 7)) - 1;
        const currentDay = parseInt((el.s).substring(8, 10) - 1);
        if (arr_day[currentMonth]) {
            if (arr_day[currentMonth][currentDay]) {
                arr_day[currentMonth][currentDay] += parseInt(el.v)
            } else {
                arr_day[currentMonth][currentDay] = parseInt(el.v)
            }
        } else {
            arr_day[currentMonth] = [];
        }
    }
    // console.log(arr_day)
    getMaxDay()
}

function getMaxDay() {
    let maxSteps = 0;
    let month = 0;
    let day = 0;
    for (let i = 0; i < arr_day.length; i++) {
        for (let j = 0; j < arr_day[i].length; j++) {
            if (arr_day[i][j] > maxSteps) {
                maxSteps = arr_day[i][j];
                month = i + 1;
                day = j + 1;
            }
        }
    }
    console.log("the month is " + month + ", the day is " + day + ".");
    console.log("In this day I walked a lot, I walked: " + maxSteps + " steps");
}

function setHourData() {
    //get hour array for steps, which hour i walk most
    for (let el of steps.steps.data) {
        const currentHour = parseInt((el.s).substring(11, 13));
        if (arr_hour[currentHour]) {
            arr_hour[currentHour] += 'a';
        } else {
            arr_hour[currentHour] = 'a';
        }
    }
    // console.log(arr_hour)
    getMaxHour()
}

function getMaxHour() {
    let tmp = 0;
    let hour = 0;

    for (let i = 0; i < arr_hour.length; i++) {
        if (arr_hour[i].length > tmp) {
            tmp = arr_hour[i].length;
            hour = i
        }
        hour_count[i] = arr_hour[i].length;
    }
    console.log("\nI always start my walk at: " + hour + " o'clock");
}

function getYearTotal() {
    let res = 0;
    for (let el of arr_month) {
        res += el;
    }
    console.log("\nIn total, I walked " + res + " steps in year " + (steps.steps.data[0].s).substring(0, 4));
}

setMonthsStepData();
setDayData();
setHourData();
getYearTotal();