Issues #83: done.

src/module/abbreviateNumber.js

@@ -1,14 +1,30 @@
 /**
- * 將數字轉換成簡寫的形式（1k、1m、1b等）
- * @param   {number} number
+ * 將數字轉換成簡寫的形式，設定 dhms 的數值
+ * @param {number} totalSeconds
  * @returns {string}
  */
-export default function abbreviateNumber(number) {
-  const SI_SYMBOLS = ["", "k", "m", "b", "t"];
-  const tier = Math.log10(Math.abs(number)) / 3 | 0;
-  const suffix = SI_SYMBOLS[tier];
-  const scale = Math.pow(10, tier * 3);
-  const scaledNumber = number / scale;
+export default function abbreviateNumber(totalSeconds) {
+  let seconds = 0;
+  let minutes = 0;
+  let hours = 0;
+  let days = 0;
+  let result = '';
+  let symbols = ['d', 'h', 'm', 's'];
 
-  return Math.round(scaledNumber) + suffix;
-}
+  totalSeconds = parseInt(totalSeconds);
+  if(!isNaN(totalSeconds)) {
+    seconds = totalSeconds % 60;
+    minutes = (Math.floor(totalSeconds - seconds) / 60) % 60;
+    hours = (Math.floor(totalSeconds / 3600)) % 24;
+    days = Math.floor(totalSeconds / (3600 * 24));
+  };
+
+  const units = [days, hours, minutes, seconds];
+  for(let i = 0; i < units.length; i++) {
+    if(units[i] > 0) result += units[i] + symbols[i];
+  }
+
+  if(totalSeconds === 0) result = '0s';
+
+  return result;
+};