asken.jpのPC画面で日付、体重、体脂肪率をTSV形式で取得

get-tsv-weight-and-body_fat-from-asken_web.js

/**
 * ## 使い方
 *
 * 1. あすけん PC サイトにログイン
 * 2. データを取得したい範囲で beginYear, endYear を設定
 * 3. ブラウザのコンソールにこのスクリプトを流す
 * 4. TSV がコンソールに出力される
 */

/** データ取得開始年 */
const beginYear = 2021;
/** データ取得終了年 */
const endYear = 2021;
/** 結果TSV */
let resultTSV = '';

/**
 * @param {string} year
 * @param {string} month
 */
const getAskenMonthlyRecord = async (year, month) => {
  return await (
    await fetch(
      `https://www.asken.jp/my_diary/view_calendar/${year}/${month}/1/0/`
    )
  ).text();
};

/**
 * @param {Element} el
 * @param {string} selectorName
 */
const trimElmInnerText = (el, selectorName) => {
  return el.querySelector(selectorName).innerText.trim();
};

/**
 * @param {Element} el
 * @param {string} year
 * @param {string} month
 * @param {string} daySl
 * @param {string} weightSl
 * @param {string} bodyFatSl
 */
const getDayLine = (el, year, month, daySl, weightSl, bodyFatSl) => {
  const day = getDay(trimElmInnerText(el, daySl));
  const ymd = `${year}-${month}-${day}`;
  const weight = getWeight(trimElmInnerText(el, weightSl));
  const bodyFat = getBodyFat(trimElmInnerText(el, bodyFatSl));
  return `${ymd}\t${weight}\t${bodyFat}\n`;
};
/**
 * @param {string} text
 */
const getDay = (text) => {
  return text.replace(/\(.\)/, '').padStart(2, '0');
};
/**
 * @param {string} text
 */
const getWeight = (text) => {
  return text.replace('kg', '');
};
/**
 * @param {string} text
 */
const getBodyFat = (text) => {
  return text.replace('%', '');
};

for (let year = beginYear; year <= endYear; year++) {
  for (let month = 1; month < 13; month++) {
    const monthStr = month.toString().padStart(2, '0');
    const data = await getAskenMonthlyRecord(year.toString(), monthStr);
    const html = document.createElement('div');
    html.innerHTML = data;

    const yearByHtml = trimElmInnerText(html, '#calendar_title').replace(
      /(\d+)年\d+月/,
      '$1'
    );
    const monthByHtml = trimElmInnerText(html, '#calendar_title').replace(
      /\d+年(\d+)月/,
      '$1'
    );

    if (monthStr === monthByHtml) {
      // monthStr !== monthByHtml の時はデータがない

      resultTSV += [...html.querySelector('#calendar_datas').children]
        .filter((el) => el.className.match(/calendar_body/) !== null)
        .reduce(
          (acc, cur) =>
            `${acc}${getDayLine(
              cur,
              year,
              month,
              '.val_date',
              '.val_weight',
              '.val_bodyfat'
            )}`,
          ''
        );
    }
  }
}

console.log(resultTSV);