2024_WORDPRESS_PLUGIN_custer/user_infos.php

<?php
namespace CUSTER;

/*
* it means someone outside wp is accessing the file, in this case kill it.
*/
if (!defined('ABSPATH')) {
	die('You can not access this file!');
}





function extract_smallest_entity($value) {
	$size = 1;
	while (is_array($value) && $size === 1) {
		// https://stackoverflow.com/questions/2216052/how-to-check-whether-an-array-is-empty-using-php#answer-20177855
		$tmp_array = array_filter($value);
		$size = count($tmp_array);
		if ($size === 1) {
			$value = reset($tmp_array);
		}
	}
	return $value;
}

function merge_arrays(...$arrays) {
	// extract first element
	$new_array = array_shift($arrays);
	// then loop through the next arrays
	foreach ($arrays as $array) {
		foreach ($array as $key => $value) {
			$value = \CUSTER\extract_smallest_entity($value);
			// if key does not already exist, simply add it and the value to new array
			if (!isset($new_array[$key])) {
				$new_array[$key] = $value;
				continue;
			}
			// if key already exist, add a new key with a (number) suffix
			$i = 1;
			while (isset($new_array[$key.'('.$i.')'])) {
				++$i;
			}
			$new_array[$key.'('.$i.')'] = $value;
		}
	}
	uksort($new_array, 'strnatcasecmp');
	return $new_array;
}


function output_list_front($array, $user_id, $if_empty) {
	$output = '<ul>';
	foreach ($array as $key => $value) {
		if (str_starts_with($key, '_')) {
			if (!str_starts_with($key, '__')) {
				continue ;
			}
		}
		$value = \CUSTER\format_user_info($key, $user_id, $if_empty);
		$output .= '<li>';
		$output .= '<span>';
		$output .= $key;
		$output .= ' : ';
		$output .= $value;
		$output .= '</span>';
		$output .= '</li>';
	}
	$output .= '</ul>';
	return $output;
}



/*
* shortcode to write user info of post author
* 0 or 1 argument, usage :
* - [custer_user_info]                                     -> list of all availables infos
* - [custer_user_info user_email]                          -> display the email
* - [custer_user_info user_email user_login]               -> display the email
* - [custer_user_info user_email id='logged_in']           -> display the email of the connected user
* - [custer_user_info user_email id='author']              -> display the email of the creator of the page/post
* - [custer_user_info user_email id='logged_in' important] -> display the email of the connected user, even if surrounded by shortcode 'custer_change_id'
*                                                           important keyword has no effect if id='author'
* - [custer_user_info user_email if_empty="value"]         -> display 'value' if the user_email is empty or does not exist
*
*/
function current_user_infos($atts) {
	$is_important = false;


	/*
	* choose the default id target :
	* - logged_in
	* - author
	*
	$id_is = 'logged_in';
	*/
	$id_is = 'author';
	$if_empty = '';


	/*
	* has parameter 'id' ?
	* has parameter important ?
	* has parameter if_empty ?
	* if yes, handle them and removes them from $atts
	*
	*/
	if (is_array($atts)) {
		if (isset($atts['id'])) {
			$id_is = $atts['id'];
			unset($atts['id']);
		}
		if ($id_is === 'logged_in') {
			if (in_array('important', $atts)) {
				$is_important = true;
				$key = array_search('important', $atts);
				unset($atts[$key]);
			}
		}
		if (isset($atts['if_empty'])) {
			$if_empty = $atts['if_empty'];
			unset($atts['if_empty']);
		}
	}


	/*
	* should output all or a specific parameter ?
	*
	*/
	$output_all = false;
	if (empty($atts))
		$output_all = true;
	else if (count($atts) === 0)
		$output_all = true;


	/*
	* get id according to attributes,
	*   and the atts of the other shortcode 'custer_change_id' if in use
	*
	*/
	if ($id_is === 'logged_in') {
		if ($is_important) {
			$user_id = Custer::get_current_user_backup();
			if ($user_id === null)
				$user_id = get_current_user_id();
		}
		else {
			$user_id = get_current_user_id();
		}
	}
	else if ($id_is === 'author') {
		$user_id = \CUSTER\get_author_id();
	}
	else {
		return '';
	}




	/*
	* output all the available parameters (for help)
	*
	*/
	if ($output_all) {
		$user_properties = (array) get_userdata($user_id)->data;
		$user_metas = get_user_meta($user_id);
		$queries = \CUSTER\get_queries($user_id, $if_empty);
		$user_infos = \CUSTER\merge_arrays($user_metas, $user_properties, $queries);
		return \CUSTER\output_list_front($user_infos, $user_id, $if_empty);
	}


	/*
	* real purpose of this shortcode :
	* only return the first argument
	*
	*/
	if (is_array($atts))
		$query = $atts[0];
	else if (is_string($atts))
		$query = $atts;
	else
		return '';
	return \CUSTER\format_user_info($query, $user_id, $if_empty);
}
add_shortcode('custer_user_info', __NAMESPACE__.'\current_user_infos');


?>