<?php
/* For licensing terms, see /license.txt */

/**
 * Controller script. Prepares the common background
 * variables to give to the scripts corresponding to
 * the requested action
 * This file contains class used like controller,
 * it should be included inside a dispatcher file (e.g: index.php)
 * @author Christian Fasanando <christian1827@gmail.com>
 *
 * @package chamilo.dashboard
 */
class DashboardController
{
    private $toolname;
    private $view;
    private $user_id;

    /**
     * Constructor
     */
    public function __construct()
    {
        $this->user_id = api_get_user_id();
        $this->toolname = 'dashboard';
        $this->view = new View($this->toolname);
    }

    /**
     * Display blocks from dashboard plugin paths
     * @param string $msg (optional)
     * render to dashboard.php view
     */
    public function display($msg = false)
    {
        $data = array();
        $user_id = $this->user_id;

        $block_data_without_plugin = DashboardManager::get_block_data_without_plugin();
        $dashboard_blocks = DashboardManager::get_enabled_dashboard_blocks();
        $user_block_data  = DashboardManager::get_user_block_data($user_id);
        $user_blocks_id = array_keys($user_block_data);

        $data_block = null;

        if (!empty($dashboard_blocks)) {
            foreach ($dashboard_blocks as $block) {

                // display only user blocks
                if (!in_array($block['id'], $user_blocks_id)) {
                    continue;
                }

                $path = $block['path'];
                $controller_class = $block['controller'];
                $filename_controller = $path.'.class.php';
                $dashboard_plugin_path = api_get_path(SYS_PLUGIN_PATH).'dashboard/'.$path.'/';
                require_once $dashboard_plugin_path.$filename_controller;
                if (class_exists($controller_class)) {
                    $obj = new $controller_class($user_id);

                    // check if user is allowed to see the block
                    if (method_exists($obj, 'is_block_visible_for_user')) {
                        $is_block_visible_for_user = $obj->is_block_visible_for_user($user_id);
                        if (!$is_block_visible_for_user) {
                            continue;
                        }
                    }

                    $data_block[$path] = $obj->get_block();
                    // set user block column
                    $data_block[$path]['column'] = $user_block_data[$block['id']]['column'];
                }
            }

            $data['blocks'] = $data_block;
            $data['dashboard_view'] = 'blocks';
        }

        if ($msg) {
            $data['msg'] = $msg;
        }

        // render to the view
        $this->view->set_data($data);
        $this->view->set_layout('layout');
        $this->view->set_template('dashboard');
        $this->view->render();
    }

	/**
	 * This method allow store user blocks from dashboard manager
	 * render to dashboard.php view
	 */
	public function store_user_block()
    {
		$data = array();
		$user_id = $this->user_id;
		if (strtoupper($_SERVER['REQUEST_METHOD']) == "POST") {
			$enabled_blocks = $_POST['enabled_blocks'];
			$columns = $_POST['columns'];
			$affected_rows = DashboardManager::store_user_blocks($user_id, $enabled_blocks, $columns);
			if ($affected_rows) {
				$data['success'] = true;
			}
		}

		$data['dashboard_view'] = 'list';

		// render to the view
		$this->view->set_data($data);
		$this->view->set_layout('layout');
		$this->view->set_template('dashboard');
		$this->view->render();
	}

	/**
	 * This method is used when you close a block from dashboard block interface
	 * render to dashboard.php view
	 */
	public function close_user_block($path)
    {
		$user_id = $this->user_id;
		$result = DashboardManager::close_user_block($user_id, $path);
		$this->display($result);
	}
}