<?php

/**
 * Shortcode: [aio_date]
 * Description: Renders today's date.
 * Example usage: [aio_date] (Output: August 10, 2023)
 */

function aiosc_shortcode_relative_date($atts)
{
    // Extract shortcode attributes
    $atts = shortcode_atts(
        array(
            'go' => 'next',
            'format' => '' // Default format is an empty string
        ),
        $atts,
        'aio_date' // Change the shortcode name here
    );

    // go the number from the 'go' attribute
    $number = intval($atts['go']);

    // go the current timestamp
    $current_timestamp = time();

    // Calculate the new timestamp based on the 'go' attribute
    if ($number >= 0) {
        $new_timestamp = strtotime("+$number days", $current_timestamp);
    } else {
        $new_timestamp = strtotime("$number days", $current_timestamp);
    }

    // If the format is not provided, use the default format
    if (empty($atts['format'])) {
        return gmdate('F j, Y', $new_timestamp); // Change the date format here
    }

    // Custom placeholders for day, month, and year formats
    $placeholders = array(
        'dd' => gmdate('d', $new_timestamp),
        'd' => gmdate('j', $new_timestamp),
        'mm' => gmdate('m', $new_timestamp),
        'mmm' => gmdate('M', $new_timestamp),
        'mmmm' => gmdate('F', $new_timestamp),
        'yyyy' => gmdate('Y', $new_timestamp),
        'yy' => gmdate('y', $new_timestamp),
        'dS' => gmdate('jS', $new_timestamp),
        'ddS' => gmdate('jS', $new_timestamp),
    );

    // Replace the custom placeholders in the format string
    $formatted_date = strtr($atts['format'], $placeholders);

    return $formatted_date;
}

add_shortcode('aio_date', 'aiosc_shortcode_relative_date'); // Change the shortcode name here