LiteXiv/include/utils.php

<?php
require_once __DIR__ . '/project.php';
require_once __DIR__ . '/config.php';
require_once __DIR__ . '/user_settings.php';
require_once __DIR__ . '/api.php';
require_once __DIR__ . '/page_structure.php';

load_settings($_COOKIE);
require_once __DIR__ . '/lang/' . $settings['language'] . '.php';

function get_string($path) {
	global $strings;
	$pointer = &$strings;
	$levels = explode('.', $path);
	foreach ($levels as $level) {
		if (!isset($pointer[$level])) return false;
		$pointer = &$pointer[$level];
	}
	return $pointer;
}

function get_proxy_url($url) {
	return BASE_URL . '/proxy/' . substr($url, 8);
}

function get_closest_mode() {
	global $settings;
	if (
		$settings['show-r15'] == 'on'
		&& ($settings['show-r18'] == 'on' || $settings['show-r18g'] == 'on')
	) return 'all';
	return 'safe';
}

function get_xrestrict_string($xRestrict) {
	return [false, 'R-18' , 'R-18G'][$xRestrict];
}

function artwork_is_hidden($artwork) {
	global $settings;
	if ($artwork->sl >= 4 && (SSFW_ONLY || $settings['show-r15'] == 'off')) return 'r15';
	else if ($artwork->xRestrict == 1 && (SFW_ONLY || $settings['show-r18'] == 'off')) return 'r18';
	else if ($artwork->xRestrict == 2 && (SFW_ONLY || $settings['show-r18g'] == 'off')) return 'r18g';
	else if ($artwork->aiType == 2 && $settings['show-aigc'] == 'off') return 'aigc';
	return false;
}

function die_with_message($status_code, $message) {
	http_response_code($status_code);
	$title = get_string('error');
	render_page_header($title); ?>
	<div class="container container-small center">
		<h1><?= $title ?></h1>
		<p><?= $message ?></p>
	</div><?php
	render_page_footer();
	die;
}

function render_collapsed_content($page_count, $button_text, callable $render_page) {
	for ($page = 0; $page < $page_count; $page ++) {
		if ($page > 0) echo '<details class="collapsed"><summary>' . $button_text .'</summary>';
		call_user_func($render_page, $page);
	}
	echo str_repeat('</details>', $page_count - 1);
}

function format_date($date_string, $timezone = 'UTC') {
	global $settings;
	$date = new DateTime($date_string, new DateTimeZone($timezone));
	$date->setTimezone(new DateTimeZone($settings['timezone']));
	return $date->format(get_string('date-format'));
}