<?php

namespace Yuvayana\Acadlix\Common\Controller;

defined('ABSPATH') || exit();

if (!class_exists("DashboardController")) {
  class DashboardController
  {
    protected static $_instance = null;

    public function __construct()
    {
      // These must run globally, including in the admin, so Permalinks settings can save the rules
      add_filter('query_vars', [$this, 'register_dashboard_query_vars']);
      add_action('generate_rewrite_rules', [$this, 'add_dashboard_rewrite_rules']);

      if (is_admin())
        return;
      add_filter("template_include", [$this, 'template_loader'], 10);
      add_filter('show_admin_bar', [$this, 'disable_admin_bar_on_dashboard']);
    }

    public function register_dashboard_query_vars($query_vars)
    {
      $query_vars[] = 'is_lms_reset_password';
      return $query_vars;
    }

    public function add_dashboard_rewrite_rules($wp_rewrite)
    {
      $dashboard_page_id = acadlix()->helper()->acadlix_get_option('acadlix_dashboard_page_id');

      if (!$dashboard_page_id) {
        return;
      }

      // get_page_uri securely handles both top-level pages and child pages (e.g., parent/dashboard)
      $dashboard_slug = get_page_uri($dashboard_page_id);

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

      $new_rules = [
        '^' . $dashboard_slug . '/reset-password/?$' => 'index.php?pagename=' . $dashboard_slug . '&is_lms_reset_password=1',
      ];

      // Prepend the new rules to the top of the existing rules array
      $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
    }

    public function is_dashboard_page()
    {
      $dashboard_page_id = acadlix()->helper()->acadlix_get_option('acadlix_dashboard_page_id');
      return $dashboard_page_id && is_page($dashboard_page_id);
    }

    public function template_loader($template)
    {
      if ($this->is_dashboard_page()) {
        // !defined('DONOTCACHEPAGE') && define('DONOTCACHEPAGE', true); // phpcs:ignore
        // Prevent caching for the dashboard page
        // ALLOW caching for the iframe so React can load it quickly from disk cache if remounted
        if (!empty($_GET['acadlix_iframe'])) {
          // Cache privately for the logged-in user for 1 hour (3600 seconds)
          // header('Cache-Control: private, max-age=3600');
          return acadlix()->view()->dashboardIframe()->render();
        }

        header('Cache-Control: no-cache, no-store, must-revalidate, max-age=0');
        header('Pragma: no-cache');
        header('Expires: 0');
        
        $dashboard_template = ACADLIX_INCLUDES_PATH . 'Common/View/DashboardView.php';
        if ($dashboard_template) {
          return $dashboard_template;
        }
      }
      return $template;
    }

    public function disable_admin_bar_on_dashboard($show_admin_bar)
    {
      if ($this->is_dashboard_page()) {
        return false;
      }
      return $show_admin_bar;
    }

    public static function instance()
    {
      if (is_null(self::$_instance)) {
        self::$_instance = new self();
      }

      return self::$_instance;
    }
  }
}