<?php
/** DomFramework
    @package domframework
    @author Dominique Fournier <dominique@fournier38.fr> */

/** Display the data in HTML with a FLASH method to display the errors */
class renderer
{
  /** The result in construction */
  public $result = NULL;
  /** The output type */
  public $output = NULL;
  /** Title by default : space to be compatible with HTML5 */
  public $title = " ";
  /** Filename of class containing the presentation layer */
  public $viewClass = FALSE;
  /** Method apply to class object to display the $result */
  public $viewMethod = FALSE;
  /** Filename in views containing the HTML layout. Without .html at the end */
  public $layout = FALSE;
  /** Array to search/replace */
  public $replacement = array();
  /** Array to variable definition */
  public $variable = array ();

  /** Display the $this->result result in the output model defined by
      $this->output */
  public function run ()
  {
    if (!@require_once ("domframework/output$this->output.php"))
      throw new \Exception ("Renderer '$this->output' not found", 500);
    $class = "output$this->output";
    $reflection = new \ReflectionMethod ($class, "out");
    $res = $reflection->invokeArgs (new $class,
           array ($this->result, $this->title,
                  $this->viewClass, $this->viewMethod, $this->layout,
                  $this->replacement, $this->variable));
    echo $res;
  }

  /** Add a flash message to the user, on the next HTML page.
      In CLI, display the message immediately.
      Message must be translated before sending to the function
      @param integer|string $priority Priority 1:success, 2:info, 3:warning,
             4:error or textual : SUCCESS, INFO, WARNING, ERROR
      @param string $message Message to display */
  static public function flash ($priority, $message)
  {
    if (php_sapi_name () === "cli")
    {
      switch ($priority)
      {
      case 1:
      case "SUCCESS":
        echo "SUCCESS: $message\n";
        break;
      case 2:
      case "INFO":
        echo "INFO: $message\n";
        break;
      case 3:
      case "WARNING":
        echo "WARNING: $message\n";
        break;
      case 4:
      case "ERROR":
        echo "ERROR: $message\n";
        break;
      default:
        throw new \Exception ("Unknown flash priority '$priority'", 500);
      }
    }
    else
    {
      if (! isset ($_SESSION))
        throw new \Exception ("No session available to store flash", 500);
      switch ($priority)
      {
      case 1:
      case "SUCCESS":
        $_SESSION["renderer"]["flash"][] = array (1, $message);
        break;
      case 2:
      case "INFO":
        $_SESSION["renderer"]["flash"][] = array (2, $message);
        break;
      case 3:
      case "WARNING":
        $_SESSION["renderer"]["flash"][] = array (3, $message);
        break;
      case 4:
      case "ERROR":
        $_SESSION["renderer"]["flash"][] = array (4, $message);
        break;
      default:
        throw new \Exception ("Unknown flash priority '$priority'", 500);
      }
    }
  }

  /** Display the HTML page with the alert box if needed
    * @param string $viewclass The view class to use to create the output
    * @param string $viewmethod The view method to use to create the output
    * @param mixed $data The data to display.
    * @param array|null $replacement Replace some values by some others in the
    * created HTML page
    * @param string|null $layoutfile The layout page to use as base
    * @param object|null $route A previous defined "route" object
    */
  static function html ($viewclass, $viewmethod, $data, $replacement = array(),
                        $layoutfile = "views/layout.html", $route = null)
  {
    if ($layoutfile !== false && ! file_exists ($layoutfile))
      throw new \Exception ("Layout file $layoutfile not found", 500);
    require_once ("domframework/outputhtml.php");
    if ($route === null)
      $route = new route ();
    // Return a $dataflash with the displayed flash in Bootstrap
    $dataflash = "";
    if (isset ($_SESSION["renderer"]["flash"]))
    {

      foreach ($_SESSION["renderer"]["flash"] as $flash)
      {
        $dataflash .= "<div class='alert ";
        switch ($flash[0])
        {
        case 4:
          $dataflash .= "alert-danger";
          $alert = dgettext("domframework", "Error!");
          break;
        case 3:
          $dataflash .= "alert-warning";
          $alert = dgettext("domframework", "Warning!");
          break;
        case 2:
          $dataflash .= "alert-info";
          $alert = dgettext("domframework", "Info :");
          break;
        case 1:
          $dataflash .= "alert-success";
          $alert = dgettext("domframework", "Success : ");
          break;
        }
        $dataflash .= " alert-dismissable'>\n";
        $dataflash .= "<button type='button' class='close' ".
                      "data-dismiss='alert'";
        $dataflash .= " aria-hidden='true'>&times;</button>\n";
        $dataflash .= "<strong>$alert</strong> ".$flash[1]."\n";
        $dataflash .= "</div>\n";
      }

      unset ($_SESSION["renderer"]["flash"]);
    }

    $html = new outputhtml ();
    $replacement = array_merge ($replacement,
                         array ("{baseurl}"=>$route->baseURL (),
                                "{baseurlresource}"=>$route->baseURLresource (),
                                "{flash}"=>$dataflash));

    echo $html->out ($data,
                     FALSE,
                     $viewclass, $viewmethod,
                     $layoutfile,
                     $replacement);
  }

}