<?php
defined('ABSPATH') or die();
/**
 * Enqueue Gutenberg block assets for backend editor.
 *
 * @since 1.0.0
 */

require_once(rsssl_path.'settings/config/config.php');
require_once(rsssl_path.'settings/config/menu.php');
require_once(rsssl_path.'settings/config/disable-fields-filter.php');

/**
 * Fix for WPML issue where WPML breaks the rest api by adding a language locale in the url
 *
 * @param $url
 * @param $path
 * @param $blog_id
 * @param $scheme
 *
 * @return string
 */
function rsssl_fix_rest_url_for_wpml($url, $path, $blog_id, $scheme)
{
	if (strpos($url, 'really-simple-security/v') === false) {
		return $url;
	}

	$current_language = false;
	if (function_exists('icl_register_string')) {
		$current_language = apply_filters('wpml_current_language', null);
	}

	if (function_exists('qtranxf_getLanguage')) {
		$current_language = qtranxf_getLanguage();
	}

	if ($current_language) {
		if (strpos($url, '/'.$current_language.'/wp-json/')) {
			$url = str_replace('/'.$current_language.'/wp-json/', '/wp-json/', $url);
		}

		// Handle plain permalinks
		if (strpos($url, '/'.$current_language.'/?rest_route=')) {
			$url = str_replace('/'.$current_language.'/?rest_route=', '/?rest_route=', $url);
		}
	}

	return $url;
}

add_filter('rest_url', 'rsssl_fix_rest_url_for_wpml', 10, 4);

/**
 * WordPress doesn't allow for translation of chunks resulting of code splitting.
 * Several workarounds have popped up in JetPack and Woocommerce: https://developer.wordpress.com/2022/01/06/wordpress-plugin-i18n-webpack-and-composer/
 * Below is mainly based on the Woocommerce solution, which seems to be the most simple approach. Simplicity is king here.
 *
 * @return array
 */
function rsssl_get_chunk_translations($path = 'settings/build'  ) {
	//get all files from the settings/build folder
	$base_path = rsssl_path . $path;
	$files = scandir($base_path );
	$json_translations = [];

	// filter the filenames to get the JavaScript and asset filenames
	$jsFilename = '';
	$assetFilename = '';
	$candidates = [];

	foreach ($files as $file) {
		// Collect build candidates and pick the newest matching index.<version>.js + asset.php pair.
		if (strpos($file, 'index.') === 0 && substr($file, -10) === '.asset.php') {
			$asset_file_path = trailingslashit($base_path) . $file;
			$asset_data = require $asset_file_path;
			if (!is_array($asset_data) || empty($asset_data['version']) || !is_string($asset_data['version'])) {
				continue;
			}

			$version = $asset_data['version'];
			$js_file = 'index.' . $version . '.js';
			$js_file_path = trailingslashit($base_path) . $js_file;

			if (!file_exists($js_file_path)) {
				continue;
			}

			$mtime = max((int) @filemtime($asset_file_path), (int) @filemtime($js_file_path));
			$candidates[] = [
				'version' => $version,
				'js' => $js_file,
				'asset' => $file,
				'mtime' => $mtime,
			];
		}

		if (strpos($file, '.js') === false) {
			continue;
		}
		$chunk_handle = str_replace('.js', '', $file );
		//temporarily register the script, so we can get a translations object.
		wp_register_script( $chunk_handle, plugins_url('build/'.$file, __FILE__), [], true );
		$language_path = defined('rsssl_pro') ? rsssl_path . 'languages' : false;
		$localeData = load_script_textdomain( $chunk_handle, 'really-simple-ssl', $language_path );

		if (!empty($localeData)){
			$json_translations[] = $localeData;
		}
		wp_deregister_script( $chunk_handle );
	}

	// Prefer the newest valid build output.
	if (!empty($candidates)) {
		usort($candidates, static function($a, $b) {
			return ($b['mtime'] ?? 0) <=> ($a['mtime'] ?? 0);
		});
		$jsFilename = $candidates[0]['js'];
		$assetFilename = $candidates[0]['asset'];
	}

	if (empty($jsFilename) || empty($assetFilename) ) {
		return [];
	}
	$assetFile     = require( rsssl_path . trailingslashit( $path ) . $assetFilename );
	return [
		'json_translations' => $json_translations,
		'dependencies'  => $assetFile['dependencies'],
		'version'  => $assetFile['version'],
		'js_file'  => $jsFilename,
	];
}

function rsssl_plugin_admin_scripts()
{

	$js_data = rsssl_get_chunk_translations();
	// check if the necessary files are found
	if ( !empty($js_data) ) {
		$handle = 'rsssl-settings';
		wp_enqueue_script( $handle);
		wp_enqueue_script(
			'rsssl-settings',
			plugins_url( 'build/' . $js_data['js_file'], __FILE__ ),
			$js_data['dependencies'],
			$js_data['version'],
			true
		);
		wp_set_script_translations($handle, 'really-simple-ssl');

		wp_localize_script(
			'rsssl-settings',
			'rsssl_settings',
			apply_filters('rsssl_localize_script', [
				'json_translations' => $js_data['json_translations'],
				'menu' => rsssl_menu(),
				'is_bf' => RSSSL()->admin->is_bf(),
				'site_url' => get_rest_url(),
				'plugins_url' => admin_url('update-core.php'),
				'admin_ajax_url' => add_query_arg(
					array(
						'type' => 'errors',
						'action' => 'rsssl_rest_api_fallback'
					),
					admin_url('admin-ajax.php') ),
				'dashboard_url' => rsssl_admin_url(),
				'letsencrypt_url' => rsssl_letsencrypt_wizard_url(),
				'le_generated_by_rsssl' => rsssl_generated_by_rsssl(),
				'upgrade_link' => rsssl_link('pro', 'upgrade' ),
				'ref' => rsssl_get_url_ref(),
				'plugin_url' => rsssl_url,
				'network_link' => network_site_url('plugins.php'),
				'pro_plugin_active' => defined('rsssl_pro'),
				'networkwide_active' => !is_multisite() || rsssl_is_networkwide_active(),//true for single sites and network wide activated
				'nonce' => wp_create_nonce('wp_rest'),//to authenticate the logged-in user
				'rsssl_nonce' => wp_create_nonce('rsssl_nonce'),
				'wpconfig_fix_required' => RSSSL()->admin->do_wpconfig_loadbalancer_fix() && ! RSSSL()->admin->wpconfig_has_fixes() && ! RSSSL()->admin->uses_bitnami(),
				'cloudflare' => rsssl_uses_cloudflare(),
				'email_verified' => rsssl_is_email_verified(),
			])
		);
	}
}

/**
 * Check if this server is behind CloudFlare
 *
 * @return bool
 */
function rsssl_uses_cloudflare(): bool {
	return isset( $_SERVER['HTTP_CF_CONNECTING_IP'] );
}

/**
 * Add SSL menu
 *
 * @return void
 */
function rsssl_add_top_level_menu() {
	if ( ! rsssl_user_can_manage() ) {
		return;
	}

	if ( is_multisite() && rsssl_is_networkwide_active() ) {
		return;
	}

	$count        = RSSSL()->admin->count_plusones();
	$update_count = $count > 0 ? "<span class='update-plugins rsssl-update-count'><span class='update-count'>$count</span></span>" : "";

	$icon_svg = '<?xml version="1.0" encoding="UTF-8"?>
<svg id="rss-menu-logo" xmlns="http://www.w3.org/2000/svg" viewBox="0 -15 90 130" width="34" height="34">
    <defs>
        <style>.cls-1{fill:#fff;stroke-width:0px;}</style>
    </defs>
    <g fill="none" stroke-width="2">
        <path class="cls-1" d="M72.92,26.6h-13v-9.4c0-7.6-6.1-13.7-13.7-13.7s-13.8,6.1-13.8,13.7v9.4h-13.1v-9.4C19.32,2.4,31.32,-9.6,46.12,-9.6s26.8,12,26.8,26.8v9.4h0Z"/>
        <rect class="cls-1" x="10.02" y="84.6" width="72.3" height="5.6"/>
        <path class="cls-1" d="M82.32,82H10.02V31.8c0-2.9,2.3-5.2,5.2-5.2h61.9c2.9,0,5.2,2.3,5.2,5.2V82h0ZM64.62,37.8c-2.2-2.2-5.9-2.2-8.2,0l-15.7,15.3l-4.9-4.9c-2.2-2.2-5.9-2.2-8.2,0l-1.9,1.9c-2.2,2.2-2.2,5.9,0,8.2l8.5,8.5c0.1,0.2,0.3,0.4,0.5,0.6l1.9,1.9l4.2,4l3.5-3.5c0.2-0.1,0.4-0.3,0.6-0.5l1.9-1.9c0.2-0.2,0.4-0.4,0.5-0.6l19.1-18.9c2.2-2.2,2.2-5.9,0-8.2l-1.8-1.9Z"/>
    </g>
</svg>';

	$icon_base64 = 'data:image/svg+xml;base64,' . base64_encode($icon_svg);

	$page_hook_suffix = add_menu_page(
		__( "Security", "really-simple-ssl" ),
		__( "Security", "really-simple-ssl" ) . $update_count,
		'manage_security',
		'really-simple-security',
		'rsssl_settings_page',
		$icon_base64,
		100 // This will place it near the bottom of the menu
	);

	add_action( "admin_print_scripts-{$page_hook_suffix}", 'rsssl_plugin_admin_scripts' );
    // Update the page title to prevent issues with an empty title causing strip_tags deprecation warnings
	add_action("load-{$page_hook_suffix}", 'rsssl_set_admin_page_title');
	add_action('admin_head', 'rsssl_override_wordpress_svg_size');

}

add_action( 'admin_menu', 'rsssl_add_top_level_menu' );

function rsssl_override_wordpress_svg_size() {
	echo '<style>
        #adminmenu .toplevel_page_really-simple-security div.wp-menu-image.svg {
            background-size: 23px auto !important;
        }
    </style>';
}

/**
 * @return void
 *
 * Set title of RSSSL admin page
 */
function rsssl_set_admin_page_title() {
	global $title;
	$title = __( "Security", "really-simple-ssl" );
}

/**
 * Render the settings page
 */

function rsssl_settings_page()
{
	if ( ! rsssl_user_can_manage()) {
		return;
	}

	?>
    <div id="really-simple-ssl" class="rsssl"></div>
    <div id="really-simple-ssl-modal"></div>
	<?php
}

/**
 * If the rest api is blocked, the code will try an admin ajax call as fall back.
 *
 * @return void
 */
add_action('rest_api_init', 'rsssl_settings_rest_route', 10);
function rsssl_settings_rest_route()
{
	if (!rsssl_user_can_manage()) {
		return;
	}

	register_rest_route('really-simple-security/v1', 'fields/get', array(
		'methods' => 'GET',
		'callback' => 'rsssl_rest_api_fields_get',
		'permission_callback' => function () {
			return rsssl_user_can_manage();
		}
	));

	register_rest_route('really-simple-security/v1', 'fields/set', array(
		'methods' => 'POST',
		'callback' => 'rsssl_rest_api_fields_set',
		'permission_callback' => function () {
			return rsssl_user_can_manage();
		}
	));

	register_rest_route('really-simple-security/v1', 'tests/(?P<test>[a-z\_\-]+)', array(
		'methods' => 'GET',
		'callback' => 'rsssl_run_test',
		'permission_callback' => function () {
			return rsssl_user_can_manage();
		}
	));

	register_rest_route('really-simple-security/v1', 'do_action/(?P<action>[a-z\_\-]+)', array(
		'methods' => 'POST',
		'callback' => 'rsssl_do_action',
		'permission_callback' => function () {
			return rsssl_user_can_manage();
		}
	));

}

/**
 * Store SSL Labs result
 * @param array $data
 *
 * @return array
 */
function rsssl_store_ssl_labs($data)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}
	update_option('rsssl_ssl_labs_data', $data, false);
	return [];
}

/**
 * @param WP_REST_Request $request
 * @param array|bool $ajax_data
 *
 * @return void
 */
function rsssl_do_action($request, $ajax_data = false)
{
	if (!rsssl_user_can_manage()) {
		return;
	}

	$action = sanitize_title($request->get_param('action'));
	$data = $ajax_data !== false ? $ajax_data : $request->get_params();

	$nonce = $data['nonce'];
	if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
		return;
	}
	switch ($action) {
		case 'ssltest_get':
			$response = ['data' => get_option('rsssl_ssl_labs_data')];
			break;
		case 'ssltest_run':
			$response = rsssl_ssltest_run($data);
			break;
		case 'store_ssl_labs':
			$response = rsssl_store_ssl_labs($data);
			break;
		case 'send_test_mail':
			$mailer = new rsssl_mailer();
			$response = $mailer->send_test_mail();
			break;
		case 'send_verification_mail':
			$mailer = new rsssl_mailer();
			$response = $mailer->send_verification_mail( rsssl_get_option('notifications_email_address') );
			break;
		case 'plugin_actions':
			$response = rsssl_plugin_actions($data);
			break;
		case 'clear_cache':
			$response = rsssl_clear_test_caches($data);
			break;
		case 'fix':
			$response = rsssl_fix($data);
			break;
		case 'otherpluginsdata':
			$response = rsssl_other_plugins_data();
			break;
		case 'get_roles':
			$roles = rsssl_get_roles();
			$response = [];
			$response['roles'] = $roles;
			break;
	case 'get_hosts':
		$response = [
			'hosts' => [], // fallback response
		];
		if ( function_exists( 'RSSSL_LE' ) ) {
			$response['hosts'] = RSSSL_LE()->hosts->getKnownHosts();
		}
		break;
		default:
            $response = apply_filters("rsssl_do_action", [], $action, $data);
	}

	// Backward compatibility: some legacy actions returned the payload at the top-level,
	// while older Settings code expects it under `data`.
	if (in_array($action, ['hardening_data'], true) && is_array($response) && !isset($response['data'])) {
		$response = array_merge(['data' => $response], $response);
	}

	if (is_array($response)) {
		$response['request_success'] = true;
	}

	return $response;
}

/**
 * @param array $data
 *
 * @return array
 */
function rsssl_clear_test_caches($data)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}

	$cache_id = sanitize_title($data['cache_id']);

	do_action('rsssl_clear_test_caches', $data);
	return [];
}

/**
 * @param array $data
 *
 * @return array
 */
function rsssl_fix($data)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}

	$fix_id = sanitize_title($data['fix_id']);
    $output = [];
	$output = apply_filters('rsssl_run_fix', $output, $fix_id);
	return $output;
}

/**
 * Process plugin installation or activation actions
 *
 * @param array $data
 *
 * @return array
 */

function rsssl_plugin_actions($data)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}
	$slug = sanitize_title($data['slug']);
	$action = sanitize_title($data['pluginAction']);

    if (class_exists('rsssl_installer') === false) {
        require_once( rsssl_path . 'class-installer.php');
    }

	$installer = new rsssl_installer($slug);
	if ($action === 'download') {
		$installer->download_plugin();
	} elseif ($action === 'activate') {
		$installer->activate_plugin();
	}

	return rsssl_other_plugins_data($slug);
}

/**
 * Run a request to SSL Labs
 *
 * @param $data
 *
 * @return string
 */
function rsssl_ssltest_run( $data ) {
	if ( ! rsssl_user_can_manage() ) {
		return '';
	}
	$url      = $data['url'];
	$response = wp_safe_remote_get( $url );
	$data     = wp_remote_retrieve_body( $response );
	if ( empty( $data ) ) {
		$data = [ 'errors' => 'Request failed, please try again.' ];
	}

	return $data;
}

/**
 * @param WP_REST_Request $request
 *
 * @return array
 */
function rsssl_run_test($request, $ajax_data = false)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}
	$nonce = $request->get_param('nonce');
	if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
		return [];
	}
	$data = $ajax_data !== false ? $ajax_data : $request->get_params();
	$test = sanitize_title($request->get_param('test'));
	$state = $request->get_param('state');
	$state = $state !== 'undefined' && $state !== 'false' ? $state : false;
	switch ($test) {
		case 'progressdata':
			$response = RSSSL()->progress->get();
			break;
		case 'dismiss_task':
			$response = RSSSL()->progress->dismiss_task($state);
			break;
		default:
			$response = apply_filters("rsssl_run_test", [], $test, $data);
	}
	if (is_array($response)) {
		$response['request_success'] = true;
	}
	return $response;
}

/**
 * Get plugin data for other plugin section
 * @param string $slug
 * @return array
 */
function rsssl_other_plugins_data($slug = false)
{
	if (!rsssl_user_can_manage()) {
		return [];
	}
	$plugins = array(
		[
			'slug' => 'complianz-gdpr',
			'constant_premium' => 'cmplz_premium',
			'wordpress_url' => 'https://wordpress.org/plugins/complianz-gdpr/',
			'upgrade_url' => 'https://complianz.io/pricing?src=rsssl-plugin',
			'title' => __("Complianz - Consent Management as it should be", "really-simple-ssl"),
		],
		[
			'slug' => 'complianz-terms-conditions',
			'wordpress_url' => 'https://wordpress.org/plugins/complianz-terms-conditions/',
			'upgrade_url' => 'https://complianz.io?src=rsssl-plugin',
			'title' => 'Complianz - ' . __("Terms and Conditions", "really-simple-ssl"),
		],
		[
			'slug' => 'simplybook',
			'wordpress_url' => 'https://wordpress.org/plugins/simplybook/',
			'upgrade_url' => 'https://simplybook.me/en/pricing',
			'title' => 'SimplyBook.me - ' . __("Online Booking System", "really-simple-ssl"),
		],
	);

    if (class_exists('rsssl_installer') === false) {
        require_once( rsssl_path . 'class-installer.php');
    }

	foreach ($plugins as $index => $plugin) {
		$installer = new rsssl_installer($plugin['slug']);
		if (isset($plugin['constant_premium']) && defined($plugin['constant_premium'])) {
			$plugins[$index]['pluginAction'] = 'installed';
		} else if (!$installer->plugin_is_downloaded() && !$installer->plugin_is_activated()) {
			$plugins[$index]['pluginAction'] = 'download';
		} else if ($installer->plugin_is_downloaded() && !$installer->plugin_is_activated()) {
			$plugins[$index]['pluginAction'] = 'activate';
		} else {
			if (isset($plugin['constant_premium'])) {
				$plugins[$index]['pluginAction'] = 'upgrade-to-premium';
			} else {
				$plugins[$index]['pluginAction'] = 'installed';
			}
		}
	}

	if ($slug) {
		foreach ($plugins as $key => $plugin) {
			if ($plugin['slug'] === $slug) {
				return $plugin;
			}
		}
	}
	return ['plugins' => $plugins];

}

/**
 * List of allowed field types
 * @param $type
 *
 * @return string|bool
 */
function rsssl_sanitize_field_type($type) {
    $types = [
        'hidden',
        'license',
        'database',
        'checkbox',
        'password',
        'radio',
        'text',
        'textarea',
        'number',
        'email',
        'select',
        'host',
        'permissionspolicy',
        'learningmode',
        'mixedcontentscan',
        'vulnerablemeasures',
        'LetsEncrypt',
        'postdropdown',
        'two_fa_roles',
        'roles_enabled_dropdown',
        'roles_dropdown',
        'captcha',
        'captcha_key',
    ];
    if (in_array($type, $types, true)) {
        return $type;
    }
    // re-moving checkbox as a return type to the end of the function
    return false;
}

/**
 * @param WP_REST_Request $request
 * @param array $ajax_data
 *
 * @return array
 */
function rsssl_rest_api_fields_set(WP_REST_Request $request, $ajax_data = false): array
{
	if (!rsssl_user_can_manage()) {
		return [];
	}

	$fields = $ajax_data ?: $request->get_json_params();
	//get the nonce
	$nonce = false;
	foreach ($fields as $index => $field) {
		if (isset($field['nonce'])) {
			$nonce = $field['nonce'];
			unset($fields[$index]);
		}
	}

	if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
		return [];
	}

	$config_fields = rsssl_fields(false);
	$config_ids = array_column($config_fields, 'id');
	foreach ($fields as $index => $field) {
		if (!isset($field['id'])) {
			unset($fields[$index]);
			continue;
		}
		$field_id = sanitize_text_field($field['id']);
		$config_field_index = array_search($field_id, $config_ids);
		if ($config_field_index === false) {
			unset($fields[$index]);
			continue;
		}
		$config_field = $config_fields[$config_field_index];
		$type = isset($config_field['type']) ? rsssl_sanitize_field_type($config_field['type']) : false;
        if ($type === false) {
            return [
                'success' => false,
                'error'   => 'Invalid field type configured for field ' . $field_id,
            ];
        }
		$value = rsssl_sanitize_field($field['value'] ?? false, $type, $field_id);
		//if an endpoint is defined, we use that endpoint instead
		if (isset($config_field['data_endpoint'])) {
			//the updateItemId allows us to update one specific item in a field set.
			$update_item_id = isset($field['updateItemId']) ? $field['updateItemId'] : false;
			$action = isset($field['action']) && $field['action'] === 'delete' ? 'delete' : 'update';
			$endpoint = $config_field['data_endpoint'];
			if (is_array($endpoint)) {
				$main = $endpoint[0];
				$class = $endpoint[1];
				$function = $endpoint[2];
				if (function_exists($main)) {
					$main()->$class->$function($value, $update_item_id, $action);
				}
			} else if (function_exists($endpoint)) {
				$endpoint($value, $update_item_id, $action);
			}

			unset($fields[$index]);
			continue;
		}

		$field['value'] = $value;
		$field['id'] = $field_id;
		$field['type'] = $type;
		$fields[$index] = $field;
	}

	if (is_multisite() && rsssl_is_networkwide_active()) {
		$options = get_site_option('rsssl_options', []);
	} else {
		$options = get_option('rsssl_options', []);
	}

	//build a new options array
	foreach ($fields as $field) {
		$prev_value = isset($options[$field['id']]) ? $options[$field['id']] : false;
		do_action("rsssl_before_save_option", $field['id'], $field['value'], $prev_value, $field['type']);
		$options[$field['id']] = apply_filters("rsssl_fieldvalue", $field['value'], $field['id'], $field['type']);
	}
	if (!empty($options)) {
		if (is_multisite() && rsssl_is_networkwide_active()) {
			update_site_option('rsssl_options', $options);
		} else {
			update_option('rsssl_options', $options);
		}
	}
	RSSSL()->admin->clear_admin_notices_cache();
	do_action('rsssl_after_saved_fields', $fields );
	foreach ( $fields as $field ) {
		do_action( "rsssl_after_save_field", $field['id'], $field['value'], $prev_value, $field['type'] );
	}
	return [
		'success' => true,
		'progress' => RSSSL()->progress->get(),
		'fields' => rsssl_fields(true),
	];
}

/**
 * Update a rsssl option
 * @param string $name
 * @param mixed $value
 *
 * @return void
 */

function rsssl_update_option($name, $value)
{
	if (!rsssl_user_can_manage()) {
		return;
	}
	$config_fields = rsssl_fields(false);
	$config_ids = array_column($config_fields, 'id');
	$config_field_index = array_search($name, $config_ids);
	if ($config_field_index === false) {
		return;
	}

	$config_field = $config_fields[$config_field_index];
	$type = $config_field['type'] ?? false;
	if (!$type) {
		return;
	}
	if (is_multisite() && rsssl_is_networkwide_active()) {
		$options = get_site_option('rsssl_options', []);
	} else {
		$options = get_option('rsssl_options', []);
	}
	if (!is_array($options)) $options = [];
	$prev_value = $options[$name] ?? false;
	$name = sanitize_text_field($name);
	$type = rsssl_sanitize_field_type($config_field['type']);
	$value = rsssl_sanitize_field($value, $type, $name);
	$value = apply_filters("rsssl_fieldvalue", $value, sanitize_text_field($name), $type);
	#skip if value wasn't changed
	if (isset($options[$name]) && $options[$name] === $value) {
		return;
	}

	$options[$name] = $value;
	if ( is_multisite() && rsssl_is_networkwide_active() ) {
		update_site_option( 'rsssl_options', $options );
	} else {
		update_option( 'rsssl_options', $options );
	}
	$config_field['value'] = $value;
	RSSSL()->admin->clear_admin_notices_cache();
	do_action('rsssl_after_saved_fields',[$config_field] );
	do_action( "rsssl_after_save_field", $name, $value, $prev_value, $type );
}

/**
 * Get the rest api fields
 * @return array
 */
function rsssl_rest_api_fields_get()
{
	if (!rsssl_user_can_manage()) {
		return [];
	}

	$output = array();
	$fields = rsssl_fields();
	foreach ($fields as $index => $field) {
		/**
		 * Load data from source
		 */
		if (isset($field['data_source'])) {
			$data_source = $field['data_source'];
			if (is_array($data_source)) {
				$main = $data_source[0];
				$class = $data_source[1];
				$function = $data_source[2];
				$field['value'] = [];
				if (function_exists($main)) {
					$field['value'] = $main()->$class->$function();
				}
			} else if (function_exists($field['data_source'])) {
				$func = $field['data_source'];
				$field['value'] = $func();
			}
		}

		$fields[$index] = $field;
	}

	$output['fields'] = $fields;
	$output['request_success'] = true;
	$output['progress'] = RSSSL()->progress->get();
	return apply_filters('rsssl_rest_api_fields_get', $output);
}

/**
 * Sanitize a field
 *
 * @param mixed $value
 * @param string $type
 * @oaram string $id
 *
 * @return array|bool|int|string|void
 */
function rsssl_sanitize_field($value, string $type, string $id)
{
	switch ($type) {
		case 'checkbox':
		case 'number':
			return (int)$value;
		case 'hidden':
			return sanitize_title($value);
		case 'select':
		case 'host':
		case 'text':
		case 'license':
		case 'password':
		case 'captcha_key':
		case 'postdropdown':
			return sanitize_text_field($value);
		case 'textarea':
    		return wp_kses($value, array());
		case 'multicheckbox':
			if (!is_array($value)) {
				$value = array($value);
			}
			return array_map('sanitize_text_field', $value);
		case 'email':
			return sanitize_email($value);
		case 'url':
			return esc_url_raw($value);
		case 'permissionspolicy':
			return rsssl_sanitize_permissions_policy($value, $type, $id);
		case 'learningmode':
			return rsssl_sanitize_datatable($value, $type, $id);
		case 'mixedcontentscan':
			return $value;
		case 'roles_dropdown':
		case 'roles_enabled_dropdown':
		case 'two_fa_roles':
			$value = !is_array($value) ? [] : $value;
			$roles = rsssl_get_roles();
			foreach ($value as $index => $role) {
				if (! in_array( $role, $roles, true ) ) {
					unset($value[$index]);
				}
			}
			return $value;
		default:
			return sanitize_text_field($value);
	}
}

/**
 * Dedicated permission policy sanitization
 *
 * @param $value
 * @param $type
 * @param $field_name
 *
 * @return array|false
 */
function rsssl_sanitize_permissions_policy($value, $type, $field_name)
{
	$possible_keys = apply_filters("rsssl_datatable_datatypes_$type", [
		'id' => 'string',
		'title' => 'string',
		'status' => 'boolean',
	]);
	// Datatable array will look something like this, whith 0 the row index, and id, title the col indexes.
	// [0] => Array
	//	(
	//		[id] => camera
	//		[title] => Camera
	//	    [value] => ()
	//      [status] => 1/0
	//   )
	//)
	$config_fields = rsssl_fields(false);
	//check if there is a default available
	$default = false;
	foreach ($config_fields as $config_field) {
		if ($config_field['id'] === $field_name) {
			$default = isset($config_field['default']) ? $config_field['default'] : false;
		}
	}

	$stored_ids = [];
	if (!is_array($value)) {
		return $default;
	} else {
		foreach ($value as $row_index => $row) {
			//check if we have invalid values
			if (is_array($row)) {
				foreach ($row as $column_index => $row_value) {
					if ($column_index === 'id' && $row_value === false) {
						unset($value[$column_index]);
					}
				}
			}

			//has to be an array.
			if (!is_array($row)) {
				if (isset($default[$row_index])) {
					$value[$row_index] = $default[$row_index];
				} else {
					unset($value[$row_index]);
				}
			}

			foreach ($row as $col_index => $col_value) {
				if (!isset($possible_keys[$col_index])) {
					unset($value[$row_index][$col_index]);
				} else {
					$datatype = $possible_keys[$col_index];
					switch ($datatype) {
						case 'string':
							$value[$row_index][$col_index] = sanitize_text_field($col_value);
							break;
						case 'int':
						case 'boolean':
						default:
							$value[$row_index][$col_index] = intval($col_value);
							break;
					}
				}
			}

			//Ensure that all required keys are set with at least an empty value
			foreach ($possible_keys as $key => $data_type) {
				if (!isset($value[$row_index][$key])) {
					$value[$row_index][$key] = false;
				}
			}
		}
	}

	//ensure that there are no duplicate ids
	foreach ($value as $index => $item) {
		if (in_array($item['id'], $stored_ids)) {
			unset($value[$index]);
			continue;
		}
		$stored_ids[] = $item['id'];
	}

	//if the default contains items not in the setting (newly added), add them.
	if (count($value) < count($default)) {
		foreach ($default as $def_row_index => $def_row) {
			//check if it is available in the array. If not, add
			if (!in_array($def_row['id'], $stored_ids)) {
				$value[] = $def_row;
			}
		}
	}
	return $value;
}

function rsssl_sanitize_datatable($value, $type, $field_name)
{
	$possible_keys = apply_filters("rsssl_datatable_datatypes_$type", [
		'id' => 'string',
		'title' => 'string',
		'status' => 'boolean',
	]);

	if (!is_array($value)) {
		return false;
	} else {
		foreach ($value as $row_index => $row) {
			//check if we have invalid values
			if (is_array($row)) {
				foreach ($row as $column_index => $row_value) {
					if ($column_index === 'id' && $row_value === false) {
						unset($value[$column_index]);
					}
				}
			}

			//has to be an array.
			if (!is_array($row)) {
				unset($value[$row_index]);
			}

			foreach ($row as $col_index => $col_value) {
				if (!isset($possible_keys[$col_index])) {
					unset($value[$row_index][$col_index]);
				} else {
					$datatype = $possible_keys[$col_index];
					switch ($datatype) {
						case 'string':
							$value[$row_index][$col_index] = sanitize_text_field($col_value);
							break;
						case 'int':
						case 'boolean':
						default:
							$value[$row_index][$col_index] = intval($col_value);
							break;
					}
				}
			}

			//Ensure that all required keys are set with at least an empty value
			foreach ($possible_keys as $key => $data_type) {
				if (!isset($value[$row_index][$key])) {
					$value[$row_index][$key] = false;
				}
			}
		}
	}
	return $value;
}


/**
 * Check if the server side conditions apply
 *
 * @param array $conditions
 *
 * @return bool
 */

function rsssl_conditions_apply(array $conditions)
{

	$defaults = ['relation' => 'AND'];
	$conditions = wp_parse_args($conditions, $defaults);
	$relation = $conditions['relation'] === 'AND' ? 'AND' : 'OR';
	unset($conditions['relation']);
	$condition_applies = true;
	foreach ($conditions as $condition => $condition_value) {
		$invert = substr($condition, 1) === '!';
		$condition = ltrim($condition, '!');

		if (is_array($condition_value)) {
			$this_condition_applies = rsssl_conditions_apply($condition_value);
		} else {
			//check if it's a function
			if (substr($condition, -2) === '()') {
				$func = $condition;
				if (preg_match('/(.*)\(\)\-\>(.*)->(.*)/i', $func, $matches)) {
					$base = $matches[1];
					$class = $matches[2];
					$func = $matches[3];
					$func = str_replace('()', '', $func);
					$this_condition_applies = call_user_func(array($base()->{$class}, $func)) === $condition_value;
				} else {
					$func = str_replace('()', '', $func);
					$this_condition_applies = $func() === $condition_value;
				}
			} else {
				$var = $condition;
				if (preg_match('/(.*)\(\)\-\>(.*)->(.*)/i', $var, $matches)) {
					$base = $matches[1];
					$class = $matches[2];
					$var = $matches[3];
					$this_condition_applies = $base()->{$class}->_get($var) === $condition_value;
				} else {
					$this_condition_applies = rsssl_get_option($var) === $condition_value;
				}
			}

			if ($invert) {
				$this_condition_applies = !$this_condition_applies;
			}

		}

		if ($relation === 'AND') {
			$condition_applies = $condition_applies && $this_condition_applies;
		} else {
			$condition_applies = $condition_applies || $this_condition_applies;
		}
	}

	return $condition_applies;
}

/**
 * Fetch all user roles.
 *
 * Tries to get roles from cache first. If roles are not in cache, it fetches them and stores them in cache.
 *
 * @return array An array of roles, each role being an associative array with 'label' and 'value' keys.
 */
function rsssl_get_roles( ): array {
	if ( ! rsssl_admin_logged_in() ) {
		return [];
	}

	global $wp_roles;

	// Try to get roles from cache
	$roles = wp_cache_get( 'rsssl_roles' );

	// If roles are not in cache, fetch and set cache
	if ( ! $roles ) {
		// Just return the names, not the capabilities
		$roles_names = array_keys( $wp_roles->roles );

		// Extract unique role values from the role names
		$roles = array_values( array_unique( $roles_names ));
		// Set the roles in cache for future use
		wp_cache_set( 'rsssl_roles', $roles );
	}

	return $roles;
}

/**
 * @param $response
 * @param $user
 * @param $request
 *
 * @return mixed
 *
 * Add user roles to /users endpoint
 */
function rsssl_add_user_role_to_api_response( $response, $user, $request ) {
	if ( rsssl_is_logged_in_rest() ) {
		$data          = $response->get_data();
		$data['roles'] = $user->roles;
		$response->set_data( $data );
	}

	return $response;
}
add_filter( 'rest_prepare_user', 'rsssl_add_user_role_to_api_response', 10, 3 );

if ( ! function_exists('rsssl_change_email_status_on_email_change' ) ) {
	function rsssl_change_email_status_on_email_change(string $field_id, $new_value, $previous_value) {
		if ( $field_id === 'notifications_email_address' && $new_value !== $previous_value ) {
			update_option( 'rsssl_email_verification_status', 'email_changed' );
		}
	}
}

add_filter('rsssl_after_save_field', 'rsssl_change_email_status_on_email_change', 10, 3);