refactor utils fx

components/DateAndTime.js

@@ -1,23 +1,16 @@
-import { convertTime, timeToAMPM } from "../services/converters";
-import { getWeekDay, getTime, isPM } from "../services/utils";
+import { unixToLocalTime, timeTo12HourFormat } from "../services/converters";
+import { getTime, getWeekDay, getAMPM } from "../services/utils";
 
 import styles from "./DateAndTime.module.css";
 
 const DateAndTime = ({ weatherData, systemUsed }) => {
   return (
     <h2 className={styles.title}>
-      {getWeekDay(weatherData)},{" "}
-      {systemUsed == "metric"
-        ? parseInt(
-            convertTime(weatherData.dt, weatherData.timezone)[0].split(":")[0]
-          )
-        : timeToAMPM(
-            convertTime(weatherData.dt, weatherData.timezone)[0]
-          ).split(":")[0]}
-      :00{" "}
-      {systemUsed == "imperial"
-        ? isPM(convertTime(weatherData.dt, weatherData.timezone)[0])
-        : ""}
+      {`${getWeekDay(weatherData)} ${getTime(
+        systemUsed,
+        weatherData.dt,
+        weatherData.timezone
+      )} ${getAMPM(systemUsed, weatherData.dt, weatherData.timezone)}`}
     </h2>
   );
 };

services/converters.js

@@ -1,18 +1,18 @@
-export const ctoF = (c) => (c * 9) / 5 + 32;
+export const ctoF = (c) => (c * 9) / 5 + 32; //celsius to fahrenheit
 
-export const mpsToMph = (mps) => (mps * 2.236936).toFixed(2);
+export const mpsToMph = (mps) => (mps * 2.236936).toFixed(2); //meters per second - miles per hour
 
-export const kmToM = (km) => (km / 1.609).toFixed(1);
+export const kmToMiles = (km) => (km / 1.609).toFixed(1); //kilometers to miles
 
-export const timeToAMPM = (time) => {
-  let hours = time.split(":")[0];
-  let minutes = time.split(":")[1];
-  hours = hours % 12;
-  hours = hours ? hours : 12;
-  return hours + ":" + minutes;
+export const timeTo12HourFormat = (time) => {
+  //23:43 to 11:43
+  const [hours, minutes] = time.split(":");
+  const remain = hours % 12;
+  return `${remain ? remain : 12}:${minutes}`;
 };
 
 export const degToCompass = (num) => {
+  //degree to compass direction
   var val = Math.floor(num / 22.5 + 0.5);
   var arr = [
     "N",
@@ -35,10 +35,14 @@ export const degToCompass = (num) => {
   return arr[val % 16];
 };
 
-export const convertTime = (unixSeconds, timezone) => {
-  const time = new Date((unixSeconds + timezone) * 1000)
+// unixToLocalTime
+export const unixToLocalTime = (unixSeconds, timezone) => {
+  //convert time to 19:23 (last received data in 24h format)
+  let time = new Date((unixSeconds + timezone) * 1000)
     .toISOString()
-    .match(/(\d{2}:\d{2})/);
+    .match(/(\d{2}:\d{2})/)[0];
 
-  return time;
+  // console.log(time);
+  // time = time.startsWith("0") ? time.substring(1) : time;
+  return time.startsWith("0") ? time.substring(1) : time;
 };

services/utils.js

@@ -1,6 +1,35 @@
-import { convertTime, kmToM, mpsToMph, timeToAMPM } from "./converters";
+import {
+  unixToLocalTime,
+  kmToMiles,
+  mpsToMph,
+  timeTo12HourFormat,
+} from "./converters";
+
+export const getWindSpeed = (systemUsed, windInMps) =>
+  systemUsed == "metric" ? windInMps : mpsToMph(windInMps); //meters per second to miles per hour
+
+export const getVisibility = (
+  systemUsed,
+  visibilityInMeters // visibility in kilometers or in miles
+) =>
+  systemUsed == "metric"
+    ? (visibilityInMeters / 1000).toFixed(1)
+    : kmToMiles(visibilityInMeters / 1000);
+
+export const getTime = (systemUsed, currentTime, timezone) =>
+  systemUsed == "metric"
+    ? unixToLocalTime(currentTime, timezone)
+    : timeTo12HourFormat(unixToLocalTime(currentTime, timezone));
+
+export const getAMPM = (systemUsed, currentTime, timezone) =>
+  systemUsed === "imperial"
+    ? unixToLocalTime(currentTime, timezone).split(":")[0] >= 12
+      ? "PM"
+      : "AM"
+    : "";
 
 export const getWeekDay = (weatherData) => {
+  //get the name of the week day
   const weekday = [
     "Sunday",
     "Monday",
@@ -11,31 +40,6 @@ export const getWeekDay = (weatherData) => {
     "Saturday",
   ];
   return weekday[
-    new Date(
-      convertTime(weatherData.dt, weatherData.timezone).input
-    ).getUTCDay()
+    new Date((weatherData.dt + weatherData.timezone) * 1000).getUTCDay()
   ];
 };
-
-export const isPM = (time) => {
-  let hours = time.split(":")[0];
-  return hours >= 12 ? "PM" : "AM";
-};
-
-export const getWindSpeed = (systemUsed, windInMph) =>
-  systemUsed == "metric" ? windInMph : mpsToMph(windInMph);
-
-export const getVisibility = (systemUsed, visibilityInKm) =>
-  systemUsed == "metric"
-    ? (visibilityInKm / 1000).toPrecision(2)
-    : kmToM(visibilityInKm / 1000);
-
-export const getTime = (systemUsed, currentTime, timezone) =>
-  systemUsed == "metric"
-    ? `${parseInt(convertTime(currentTime, timezone)[0].split(":")[0])}:${
-        convertTime(currentTime, timezone)[0].split(":")[1]
-      }`
-    : timeToAMPM(convertTime(currentTime, timezone)[0]);
-
-export const getAMPM = (systemUsed, currentTime, timezone) =>
-  systemUsed == "imperial" ? isPM(convertTime(currentTime, timezone)[0]) : "";