Creating New File JSON In WordPress using Cron Event

<?php
/*
Plugin Name: Jobvite Job Fetcher
Description: Fetches job data from Jobvite API, saves it as a JSON file in wp-content/jobs directory, and sends an email notification once done.
Version: 1.0
Author: ABCD
*/

// Ensure the code is not executed outside of WordPress
defined('ABSPATH') or die('No script kiddies please!');


// Schedule the custom cron event on plugin activation
register_activation_hook(__FILE__, 'jobvite_job_fetcher_activation');
function jobvite_job_fetcher_activation() {
    if (!wp_next_scheduled('jobvite_job_fetcher_cron_event')) {
        // Schedule the event to run daily at midnight
        wp_schedule_event(strtotime('midnight'), 'daily', 'jobvite_job_fetcher_cron_event');
    }
}

// Clear the custom cron event on plugin deactivation
register_deactivation_hook(__FILE__, 'jobvite_job_fetcher_deactivation');
function jobvite_job_fetcher_deactivation() {
    wp_clear_scheduled_hook('jobvite_job_fetcher_cron_event');
}

// Hook the custom function to the custom cron event
add_action('jobvite_job_fetcher_cron_event', 'fetch_job_data_from_jobvite');

function fetch_job_data_from_jobvite() {
    // URL of the API endpoint
    $apiUrl = "https://api.jobvite.com/api/v2/job?api=abcd_jobfeedapi_key&sc=abcdefjhijklmnopq";

    // Directory where the JSON file will be saved
    $outputDirectory = WP_CONTENT_DIR . '/jobs';

    // Check if the directory exists, if not create it
    if (!is_dir($outputDirectory)) {
        mkdir($outputDirectory, 0755, true);
    }

    // Path to the old JSON file
    $oldFilePath = $outputDirectory . '/jobs.json';

    // Delete the old JSON file if it exists
    if (file_exists($oldFilePath)) {
        unlink($oldFilePath);
    }

    // Create a new file name with the current date
    $date = date('Y-m-d_H-i-s');
    $newFilePath = $outputDirectory . '/jobs.json';

    // Fetch data from the API
    $apiResponse = file_get_contents($apiUrl);
    if ($apiResponse === FALSE) {
        error_log('Error occurred while fetching data from the API');
        return;
    }

    // Convert API response to JSON format
    $jsonData = json_encode(json_decode($apiResponse), JSON_PRETTY_PRINT);

    // Save the JSON data to the new file
    file_put_contents($newFilePath, $jsonData);
}