<?php

namespace Wpo\Core;

use Wpo\Core\Extensions_Helpers;
use Wpo\Core\WordPress_Helpers;
use Wpo\Core\Script_Helpers;
use Wpo\Services\Options_Service;
use Wpo\Services\Error_Service;
use Wpo\Services\Log_Service;
use Wpo\Services\Wp_Config_Service;

// Prevent public access to this script
defined('ABSPATH') or die();

if (!class_exists('\Wpo\Core\Shortcode_Helpers')) {

    class Shortcode_Helpers
    {

        /**
         * Helper method to ensure that short codes are initialized
         * 
         * @since 7.0
         * 
         * @return void
         */
        public static function ensure_pintra_short_code()
        {
            if (!shortcode_exists('pintra')) {
                add_shortcode('pintra', '\Wpo\Core\Shortcode_Helpers::add_pintra_shortcode');
            }
        }

        /**
         * Adds a pintra app launcher into the page 
         * 
         * @since 5.0
         * 
         * @param array short code parameters according to Wordpress codex
         * @param string content found in between the short code start and end tag
         * @param string text domain
         */
        public static function add_pintra_shortcode($atts = array(), $content = null, $tag = '')
        {
            $atts = array_change_key_case((array)$atts, CASE_LOWER);
            $props = '[]';

            if (
                isset($atts['props'])
                && strlen(trim($atts['props'])) > 0
            ) {
                $result = array();
                $props = html_entity_decode($atts['props']);
                $prop_kv_pairs = explode(';', $props);

                foreach ($prop_kv_pairs as  $prop_kv_pair) {
                    $first_separator = WordPress_Helpers::stripos($prop_kv_pair, ',');

                    if (false === $first_separator) {
                        continue;
                    }

                    $result[\substr($prop_kv_pair, 0, $first_separator)] = \substr($prop_kv_pair, $first_separator + 1);
                }

                $props = json_encode($result);
            }

            /**
             * @since 28.x  Validates the script URL and replaces the major part of the URL.
             */

            $script_url = !empty($atts['script_url']) ? html_entity_decode($atts['script_url']) : '';
            $script_url = self::validate_script_url($script_url);

            ob_start();
            include($GLOBALS['WPO_CONFIG']['plugin_dir'] . '/templates/pintra.php');
            $content = ob_get_clean();
            return wp_kses($content, WordPress_Helpers::get_allowed_html());
        }

        /**
         * Helper method to ensure that short codes are initialized
         * 
         * @since 8.0
         * 
         * @return void
         */
        public static function ensure_login_button_short_code_V2()
        {
            if (empty(Extensions_Helpers::get_active_extensions())) {
                return;
            }

            if (!shortcode_exists('wpo365-sign-in-with-microsoft-v2-sc')) {
                add_shortcode('wpo365-sign-in-with-microsoft-v2-sc', '\Wpo\Core\Shortcode_Helpers::add_sign_in_with_microsoft_shortcode_V2');
            }
        }

        /**
         * Adds the Sign in with Microsoft short code V2
         * 
         * @since 8.0
         * 
         * @param array short code parameters according to Wordpress codex
         * @param string content found in between the short code start and end tag
         * @param string text domain
         */
        public static function add_sign_in_with_microsoft_shortcode_V2($params = array(), $content = null, $tag = '')
        {
            if (empty($content)) {
                return $content;
            }

            // Ensure pintra-redirect is enqueued
            Script_Helpers::enqueue_pintra_redirect();

            $site_url = $GLOBALS['WPO_CONFIG']['url_info']['wp_site_url'];

            // Load the js dependency
            ob_start();
            include(Extensions_Helpers::get_active_extension_dir(array('wpo365-login-premium/wpo365-login.php', 'wpo365-sync-5y/wpo365-sync-5y.php', 'wpo365-login-intranet/wpo365-login.php', 'wpo365-intranet-5y/wpo365-intranet-5y.php', 'wpo365-integrate/wpo365-integrate.php', 'wpo365-pro/wpo365-pro.php')) . '/templates/openid-ssolink.php');
            $js_lib = ob_get_clean();

            // Sanitize the HTML template
            $dom = new \DOMDocument();
            @$dom->loadHTML($content);
            $script = $dom->getElementsByTagName('script');
            $remove = array();

            foreach ($script as $item)
                $remove[] = $item;

            foreach ($remove as $item)
                $item->parentNode->removeChild($item);

            // Concatenate the two
            $output = $js_lib . $dom->saveHTML();
            return str_replace("__##PLUGIN_BASE_URL##__", $GLOBALS['WPO_CONFIG']['plugin_url'], $output);
        }

        /**
         * Helper method to ensure that short code for login button is initialized
         * 
         * @since 11.0
         */
        public static function ensure_login_button_short_code()
        {
            if (!shortcode_exists('wpo365-login-button')) {
                add_shortcode('wpo365-login-button', '\Wpo\Core\Shortcode_Helpers::login_button');
            }
        }

        /**
         * Helper to display the Sign in with Microsoft button on a login form.
         * 
         * @since 10.6
         * 
         * @param   
         * 
         * @return void
         */
        public static function login_button($return = false)
        {
            // Don't render a login button when sso is disabled
            if (Options_Service::get_global_boolean_var('no_sso')) {
                return;
            }

            // Used by the template that is rendered
            $hide_login_button = Options_Service::get_global_boolean_var('hide_login_button');
            $sign_in_with_microsoft = Options_Service::get_global_string_var('sign_in_with_microsoft');

            if (empty($sign_in_with_microsoft) || $sign_in_with_microsoft == 'Sign in with Microsoft') {
                $sign_in_with_microsoft = __('Sign in with Microsoft', 'wpo365-login');
            }

            $sign_in_multi_placeholder = Options_Service::get_global_string_var('sign_in_multi_placeholder');

            if (empty($sign_in_multi_placeholder) || $sign_in_multi_placeholder == 'Select your Identity Provider') {
                $sign_in_multi_placeholder = __('Select your Identity Provider', 'wpo365-login');
            }

            $wpo_idps = Wp_Config_Service::get_multiple_idps();

            if (!empty($wpo_idps)) {
                $wpo_idps = array_filter($wpo_idps, function ($value) {
                    return !empty($value['title']) && !empty($value['id']);
                });

                $wpo_idps = array_values($wpo_idps); // re-index from 0
            }

            $login_button_template = sprintf(
                '%s/templates/login-button%s.php',
                $GLOBALS['WPO_CONFIG']['plugin_dir'],
                (Options_Service::get_global_boolean_var('use_login_button_v1') ? '' : '-v2')
            );

            $_login_button_config = Options_Service::get_global_list_var('button_config');
            $login_button_config = array();

            for ($i = 0; $i < sizeof($_login_button_config); $i++) {
                $login_button_config[$_login_button_config[$i]['key']] = $_login_button_config[$i]['value'];
            }

            $button_dont_zoom = !empty($login_button_config['buttonDontZoom']);
            $button_hide_logo = !empty($login_button_config['buttonHideLogo']);
            $button_border_color = !empty($login_button_config['buttonBorderColor']) ? $login_button_config['buttonBorderColor'] : '#8C8C8C';
            $button_border_width = !empty($login_button_config['buttonHideBorder']) ? '0px solid' : '1px solid';
            $button_foreground_color = !empty($login_button_config['buttonForegroundColor']) ? $login_button_config['buttonForegroundColor'] : '#5E5E5E';
            $button_background_color = !empty($login_button_config['buttonBackgroundColor']) ? $login_button_config['buttonBackgroundColor'] : '#FFFFFF';

            ob_start();
            include($login_button_template);
            $content = ob_get_clean();

            if ($return) {
                return wp_kses($content, WordPress_Helpers::get_allowed_html());
            }

            echo wp_kses($content, WordPress_Helpers::get_allowed_html());
        }

        /**
         * Helper method to ensure that short code for displaying errors is initialized
         * 
         * @since 7.8
         */
        public static function ensure_display_error_message_short_code()
        {
            if (empty(Extensions_Helpers::get_active_extensions())) {
                return;
            }

            if (!shortcode_exists('wpo365-display-error-message-sc')) {
                add_shortcode('wpo365-display-error-message-sc', '\Wpo\Core\Shortcode_Helpers::add_display_error_message_shortcode');
            }
        }

        /**
         * Adds the error message encapsulated in a div into the page 
         * 
         * @since 7.8
         * 
         * @param array short code parameters according to Wordpress codex
         * @param string content found in between the short code start and end tag
         * @param string text domain
         */
        public static function add_display_error_message_shortcode($atts = array(), $content = null, $tag = '')
        {
            $error_code = isset($_GET['login_errors'])
                ? sanitize_text_field($_GET['login_errors'])
                : '';

            $error_message = Error_Service::get_error_message($error_code);

            if (empty($error_message)) {
                return;
            }

            ob_start();
            include(Extensions_Helpers::get_active_extension_dir(array('wpo365-login-professional/wpo365-login.php', 'wpo365-customers/wpo365-customers.php', 'wpo365-login-premium/wpo365-login.php', 'wpo365-sync-5y/wpo365-sync-5y.php', 'wpo365-login-intranet/wpo365-login.php', 'wpo365-intranet-5y/wpo365-intranet-5y.php', 'wpo365-customers/wpo365-customers.php', 'wpo365-integrate/wpo365-integrate.php', 'wpo365-pro/wpo365-pro.php')) . '/templates/error-message.php');
            $content = ob_get_clean();
            return wp_kses($content, WordPress_Helpers::get_allowed_html());
        }

        /**
         * Helper method to ensure that short codes are initialized
         * 
         * @since 7.0
         * 
         * @return void
         */
        public static function ensure_wpo365_redirect_script_sc()
        {
            if (!shortcode_exists('wpo365-redirect-script')) {
                add_shortcode('wpo365-redirect-script', '\Wpo\Core\Shortcode_Helpers::add_wpo365_redirect_script_sc');
            }
        }

        /**
         * Adds a javascript file that WPO365 requires to trigger the "Sign in with Microsoft" flow client-side.
         * 
         * @since 33.0
         * 
         * @param array short code parameters according to Wordpress codex
         * @param string content found in between the short code start and end tag
         * @param string text domain
         */
        public static function add_wpo365_redirect_script_sc($atts = array(), $content = null, $tag = '')
        {
            // Ensure pintra-redirect is enqueued (which would already be enqueued if support for Teams is enabled)
            if (!Options_Service::get_global_boolean_var('use_teams')) {
                Script_Helpers::enqueue_pintra_redirect();
            }
        }

        /**
         * Helper method to ensure that short codes are initialized
         * 
         * @since 8.0
         * 
         * @return void
         */
        public static function ensure_sso_button_sc()
        {
            if (!shortcode_exists('wpo365-sso-button')) {
                add_shortcode('wpo365-sso-button', '\Wpo\Core\Shortcode_Helpers::add_sso_button_sc');
            }
        }

        /**
         * Adds the default SSO button with customizations applied
         * 
         * @since 33.0
         * 
         * @param array short code parameters according to Wordpress codex
         * @param string content found in between the short code start and end tag
         * @param string text domain
         */
        public static function add_sso_button_sc($params = array(), $content = null, $tag = '')
        {
            // Ensure pintra-redirect is enqueued
            Script_Helpers::enqueue_pintra_redirect();

            // Output the SSO button
            return self::login_button(true);
        }

        /**
         * Validates the script URL and replaces the major part of the URL to ensure 
         * the script is located in the WPO365 apps/dist folder.
         * 
         * @since 28.x
         * 
         * @param mixed $script_url 
         * @return string 
         */
        private static function validate_script_url($script_url)
        {
            if (empty($script_url)) {
                return '';
            }

            $script_url = html_entity_decode($script_url);
            $segments = explode('/', $script_url);

            if (empty($segments) || count($segments) < 4) {
                Log_Service::write_log('WARN', sprintf(
                    '%s -> Pintra script URL is ill-formatted [Url: %s]',
                    __METHOD__,
                    $script_url
                ));
                return '';
            }

            $plugin_folder = array_slice($segments, -4, 1)[0];

            if (substr($plugin_folder, 0, 6) != 'wpo365') {
                Log_Service::write_log('WARN', sprintf(
                    '%s -> Relative script URL does not start with "wpo365-" [Url: %s]',
                    __METHOD__,
                    $script_url
                ));
                return '';
            }

            $script_relative_url = sprintf(
                '%s/apps/dist/%s',
                $plugin_folder,
                array_pop($segments)
            );

            return plugins_url($script_relative_url);
        }
    }
}