<?php

/*
* 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_if_array_size_one_CIPF($value) {
	if (is_array($value) && count($value) === 1)
		return reset($value);
	return $value;
}

function merge_two_arrays_CIPF($array1, $array2) {
	$new_array = $array1;
	foreach ($array2 as $key2 => $value2) {
		$value = extract_if_array_size_one_CIPF($value2);
		// if key was not in first array, add the new element to it
		if (!isset($new_array[$key2])) {
			$new_array[$key2] = $value2;
			continue;
		}
		// if key was in first array, add both in an array
		$value1 = extract_if_array_size_one_CIPF($new_array[$key2]);
		if (empty($value1))
			$new_array[$key2] = $value2;
		else if (empty($value2))
			$new_array[$key2] = $value1;
		else {
			$new_value = array($value1, $value2);
			$new_array[$key] = $new_value;
		}
	}
	return $new_array;
}


function output_list_front_CIPF($array) {
	$output = '<ul>';
	foreach ($array as $key => $value) {
		if (str_starts_with($key, '_'))
			continue ;
		$output .= '<li>';
		$output .= '<span>';
		$output .= $key;
		$output .= ' : ';
		if (is_array($value) && count($value) === 1)
			$output .= json_encode($value[0]);
		else
			$output .= json_encode($value);
		$output .= '</span>';
		$output .= '</li>';
	}
	$output .= '</ul>';
	return $output;
}


function format_user_info_CIPF($output, $query, &$current_user, $user_id) {
	$output_date_format = PLGNTLS_class::USER_INFO_DATE_FORMAT;

	$is_acf = false;
	$is_date = false;

	/*
	* check if it's an acf field
	* first method : check if _field exist
	*
	$_acf_field = '_'.$query;
	$acf_field = $current_user->$_acf_field;
	if (!empty($acf_field))
		$is_acf = true;
	*/

	/*
	* check if it's an acf field, and a date
	* second method : check what get_field_object() returns
	*
	*/
	$acf_id = 'user_'.$user_id;
	$acf_object = get_field_object($query, $acf_id);
	if ($acf_object !== false)
		$is_acf = true;

	/*
	* check if is date
	*
	*/
	if ($is_acf) {
		$acf_type = $acf_object['type'];
		if ($acf_type && $acf_type === "date_picker")
			$is_date = true;
	}

	/*
	* if is date, transform format
	*
	*/
	if ($is_date) {
		$acf_date_string = $acf_object['value'];
		$acf_date_format = $acf_object['return_format'];
		$date = date_create_from_format($acf_date_format, $acf_date_string);
		$output = $date->format($output_date_format);
	}

	/*
	* return the result
	*
	*/
	if (is_string($output))
		return $output;
	else
		return json_encode($output);
}


/*
* shortcode to write user info of the logged in user
* 0 or 1 argument, usage :
* - [cipf_user_info]                       -> list of all availables infos
* - [cipf_user_info user_email]            -> display the email
* - [cipf_user_info user_email user_login] -> display the email
* - [cipf_user_info user_email author]     -> display the email of the author of the page/post instead of the connected user
*
*/
function current_user_infos_CIPF($atts) {
	if (!is_user_logged_in())
		return ;

	error_log("--atts");
	error_log(json_encode($atts));

	$current_user = wp_get_current_user();
	$user_id = get_current_user_id();

	/*
	* has parameter 'author' ?
	* if yes, removes it from $atts
	*
	*/
	$has_author = false;
	if (is_array($atts)) {
		$needle_key = array_search('author', $atts);
		if ($needle_key !== false) {
			unset($atts[$needle_key]);
			$has_author = true;
		}
	}
	else {
		if ($atts === 'author') {
			$atts = '';
			$has_author = true;
		}
	}

	error_log(json_encode($atts));
	/*
	* 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 author id outside loop and outside singular page : https://wordpress.stackexchange.com/q/65548
	*
	*/
	if ($has_author) {
		if (is_author()) {
			$user_id = get_queried_object_id();
		}
		else if (in_the_loop()) {
			$user_id = get_the_author_meta('ID');
		}
		else if (is_singular()) {
			$user_id = get_queried_object()->post_author;
		}
		else {
			global $wp_query;
			if (!empty($wp_query->posts))
				$user_id = $wp_query->posts[0]->post_author;
		}
		$current_user = new WP_User($user_id);
	}
		
	/*
	* 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);
		$user_infos = merge_two_arrays_CIPF($user_metas, $user_properties);
		return output_list_front_CIPF($user_infos);
	}

	/*
	* real purpose of this shortcode :
	* only return the first argument (that is not 'author')
	*
	*/
	if (is_array($atts))
		$query = reset($atts);
	else if (is_string($atts))
		$query = $atts;
	else
		return '';
	$output = $current_user->$query;
	return format_user_info_CIPF($output, $query, $current_user, $user_id);
}
add_shortcode('cipf_user_info', 'current_user_infos_CIPF');


?>