How to create a custom hook for handling user interactions with the browser's battery status in Next.js



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To create a custom hook for handling user interactions with the browser's battery status in a Next.js application, you can follow these steps:

  1. Install Dependencies: Ensure you have the necessary dependencies installed. In this case, you might not need any additional dependencies since you'll be working with browser APIs directly.

  2. Create the Hook: Create a custom hook that will interact with the browser's Battery Status API.

  3. Implement Hook Logic: Implement the logic inside the custom hook to retrieve and monitor the battery status.

Here's an example implementation:

javascript
// useBatteryStatus.js

import { useState, useEffect } from 'react';

const useBatteryStatus = () => {
  const [batteryStatus, setBatteryStatus] = useState(null);

  useEffect(() => {
    // Check if Battery Status API is supported
    if ('getBattery' in navigator) {
      const batteryPromise = navigator.getBattery();

      batteryPromise
        .then((battery) => {
          // Initial battery status
          setBatteryStatus({
            charging: battery.charging,
            level: battery.level,
            chargingTime: battery.chargingTime,
            dischargingTime: battery.dischargingTime,
          });

          // Update battery status on changes
          battery.addEventListener('chargingchange', () => {
            setBatteryStatus((prevStatus) => ({
              ...prevStatus,
              charging: battery.charging,
            }));
          });

          battery.addEventListener('levelchange', () => {
            setBatteryStatus((prevStatus) => ({
              ...prevStatus,
              level: battery.level,
            }));
          });

          battery.addEventListener('chargingtimechange', () => {
            setBatteryStatus((prevStatus) => ({
              ...prevStatus,
              chargingTime: battery.chargingTime,
            }));
          });

          battery.addEventListener('dischargingtimechange', () => {
            setBatteryStatus((prevStatus) => ({
              ...prevStatus,
              dischargingTime: battery.dischargingTime,
            }));
          });
        })
        .catch((error) => {
          console.error('Battery Status API error:', error);
        });
    } else {
      console.warn('Battery Status API not supported.');
    }
  }, []);

  return batteryStatus;
};

export default useBatteryStatus;

In this custom hook:

  • We check if the Battery Status API is supported.
  • If supported, we retrieve the battery status and set up event listeners to update the status whenever it changes.
  • The hook returns the battery status object.

To use this hook in your Next.js application:

javascript
// Example usage in a Next.js component

import React from 'react';
import useBatteryStatus from '../hooks/useBatteryStatus';

const BatteryStatusComponent = () => {
  const batteryStatus = useBatteryStatus();

  return (
    <div>
      <h2>Battery Status</h2>
      {batteryStatus ? (
        <div>
          <p>Charging: {batteryStatus.charging ? 'Yes' : 'No'}</p>
          <p>Level: {batteryStatus.level * 100}%</p>
          <p>Charging Time: {batteryStatus.chargingTime} seconds</p>
          <p>Discharging Time: {batteryStatus.dischargingTime} seconds</p>
        </div>
      ) : (
        <p>Battery status not available</p>
      )}
    </div>
  );
};

export default BatteryStatusComponent;

Ensure to import the BatteryStatusComponent wherever you want to use it in your Next.js application.

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