<?php

/**
 * This is a standard Phabricator page with menus, Javelin, DarkConsole, and
 * basic styles.
 *
 */
final class PhabricatorStandardPageView extends PhabricatorBarePageView {

  private $baseURI;
  private $applicationName;
  private $glyph;
  private $menuContent;
  private $showChrome = true;
  private $disableConsole;
  private $pageObjects = array();
  private $applicationMenu;
  private $showFooter = true;
  private $showDurableColumn = true;

  public function setShowFooter($show_footer) {
    $this->showFooter = $show_footer;
    return $this;
  }

  public function getShowFooter() {
    return $this->showFooter;
  }

  public function setApplicationMenu(PHUIListView $application_menu) {
    $this->applicationMenu = $application_menu;
    return $this;
  }

  public function getApplicationMenu() {
    return $this->applicationMenu;
  }

  public function setApplicationName($application_name) {
    $this->applicationName = $application_name;
    return $this;
  }

  public function setDisableConsole($disable) {
    $this->disableConsole = $disable;
    return $this;
  }

  public function getApplicationName() {
    return $this->applicationName;
  }

  public function setBaseURI($base_uri) {
    $this->baseURI = $base_uri;
    return $this;
  }

  public function getBaseURI() {
    return $this->baseURI;
  }

  public function setShowChrome($show_chrome) {
    $this->showChrome = $show_chrome;
    return $this;
  }

  public function getShowChrome() {
    return $this->showChrome;
  }

  public function appendPageObjects(array $objs) {
    foreach ($objs as $obj) {
      $this->pageObjects[] = $obj;
    }
  }

  public function setShowDurableColumn($show) {
    $this->showDurableColumn = $show;
    return $this;
  }

  public function getShowDurableColumn() {
    $request = $this->getRequest();
    if (!$request) {
      return false;
    }

    $viewer = $request->getUser();
    if (!$viewer->isLoggedIn()) {
      return false;
    }

    $conpherence_installed = PhabricatorApplication::isClassInstalledForViewer(
      'PhabricatorConpherenceApplication',
      $viewer);
    if (!$conpherence_installed) {
      return false;
    }

    $patterns = $this->getQuicksandURIPatternBlacklist();
    $path = $request->getRequestURI()->getPath();
    foreach ($patterns as $pattern) {
      if (preg_match('(^'.$pattern.'$)', $path)) {
        return false;
      }
    }

    return true;
  }

  public function getDurableColumnVisible() {
    $column_key = PhabricatorUserPreferences::PREFERENCE_CONPHERENCE_COLUMN;
    return (bool)$this->getUserPreference($column_key, 0);
  }


  public function getTitle() {
    $glyph_key = PhabricatorUserPreferences::PREFERENCE_TITLES;
    if ($this->getUserPreference($glyph_key) == 'text') {
      $use_glyph = false;
    } else {
      $use_glyph = true;
    }

    $title = parent::getTitle();

    $prefix = null;
    if ($use_glyph) {
      $prefix = $this->getGlyph();
    } else {
      $application_name = $this->getApplicationName();
      if (strlen($application_name)) {
        $prefix = '['.$application_name.']';
      }
    }

    if (strlen($prefix)) {
      $title = $prefix.' '.$title;
    }

    return $title;
  }


  protected function willRenderPage() {
    parent::willRenderPage();

    if (!$this->getRequest()) {
      throw new Exception(
        pht(
          'You must set the Request to render a PhabricatorStandardPageView.'));
    }

    $console = $this->getConsole();

    require_celerity_resource('phabricator-core-css');
    require_celerity_resource('phabricator-zindex-css');
    require_celerity_resource('phui-button-css');
    require_celerity_resource('phui-spacing-css');
    require_celerity_resource('phui-form-css');
    require_celerity_resource('sprite-gradient-css');
    require_celerity_resource('phabricator-standard-page-view');
    require_celerity_resource('conpherence-durable-column-view');

    Javelin::initBehavior('workflow', array());

    $request = $this->getRequest();
    $user = null;
    if ($request) {
      $user = $request->getUser();
    }

    if ($user) {
      $default_img_uri =
        celerity_get_resource_uri(
          'rsrc/image/icon/fatcow/document_black.png');
      $download_form = phabricator_form(
        $user,
        array(
          'action' => '#',
          'method' => 'POST',
          'class'  => 'lightbox-download-form',
          'sigil'  => 'download',
        ),
        phutil_tag(
          'button',
          array(),
          pht('Download')));

      Javelin::initBehavior(
        'lightbox-attachments',
        array(
          'defaultImageUri' => $default_img_uri,
          'downloadForm'    => $download_form,
        ));
    }

    Javelin::initBehavior('aphront-form-disable-on-submit');
    Javelin::initBehavior('toggle-class', array());
    Javelin::initBehavior('history-install');
    Javelin::initBehavior('phabricator-gesture');

    $current_token = null;
    if ($user) {
      $current_token = $user->getCSRFToken();
    }

    Javelin::initBehavior(
      'refresh-csrf',
      array(
        'tokenName' => AphrontRequest::getCSRFTokenName(),
        'header'    => AphrontRequest::getCSRFHeaderName(),
        'current'   => $current_token,
      ));

    Javelin::initBehavior('device');

    if ($user->hasSession()) {
      $hisec = ($user->getSession()->getHighSecurityUntil() - time());
      if ($hisec > 0) {
        $remaining_time = phutil_format_relative_time($hisec);
        Javelin::initBehavior(
          'high-security-warning',
          array(
            'uri' => '/auth/session/downgrade/',
            'message' => pht(
              'Your session is in high security mode. When you '.
              'finish using it, click here to leave.',
              $remaining_time),
          ));
      }
    }

    if ($console) {
      require_celerity_resource('aphront-dark-console-css');

      $headers = array();
      if (DarkConsoleXHProfPluginAPI::isProfilerStarted()) {
        $headers[DarkConsoleXHProfPluginAPI::getProfilerHeader()] = 'page';
      }
      if (DarkConsoleServicesPlugin::isQueryAnalyzerRequested()) {
        $headers[DarkConsoleServicesPlugin::getQueryAnalyzerHeader()] = true;
      }

      Javelin::initBehavior(
        'dark-console',
        array(
          // NOTE: We use a generic label here to prevent input reflection
          // and mitigate compression attacks like BREACH. See discussion in
          // T3684.
          'uri' => pht('Main Request'),
          'selected' => $user ? $user->getConsoleTab() : null,
          'visible'  => $user ? (int)$user->getConsoleVisible() : true,
          'headers' => $headers,
        ));

      // Change this to initBehavior when there is some behavior to initialize
      require_celerity_resource('javelin-behavior-error-log');
    }

    if ($user) {
      $viewer = $user;
    } else {
      $viewer = new PhabricatorUser();
    }

    $menu = id(new PhabricatorMainMenuView())
      ->setUser($viewer);

    if ($this->getController()) {
      $menu->setController($this->getController());
    }

    if ($this->getApplicationMenu()) {
      $menu->setApplicationMenu($this->getApplicationMenu());
    }

    $this->menuContent = $menu->render();
  }


  protected function getHead() {
    $monospaced = PhabricatorEnv::getEnvConfig('style.monospace');
    $monospaced_win = PhabricatorEnv::getEnvConfig('style.monospace.windows');

    $request = $this->getRequest();
    if ($request) {
      $user = $request->getUser();
      if ($user) {
        $pref = $user->loadPreferences()->getPreference(
            PhabricatorUserPreferences::PREFERENCE_MONOSPACED);
        $monospaced = nonempty($pref, $monospaced);
        $monospaced_win = nonempty($pref, $monospaced_win);
      }
    }

    $response = CelerityAPI::getStaticResourceResponse();

    $font_css = null;
    if (!empty($monospaced)) {
      $font_css = hsprintf(
        '<style type="text/css">'.
        '.PhabricatorMonospaced, '.
        '.phabricator-remarkup .remarkup-code-block '.
          '.remarkup-code { font: %s !important; } '.
        '</style>', $monospaced);
    }

    $font_css_win = null;
    if (!empty($monospaced_win)) {
      $font_css_win = hsprintf(
        '<style type="text/css">'.
        '.platform-windows .PhabricatorMonospaced, '.
        '.platform-windows .phabricator-remarkup '.
          '.remarkup-code-block .remarkup-code { font: %s !important; }'.
        '</style>', $monospaced_win);
    }

    return hsprintf(
      '%s%s%s%s',
      parent::getHead(),
      $font_css,
      $font_css_win,
      $response->renderSingleResource('javelin-magical-init', 'phabricator'));
  }

  public function setGlyph($glyph) {
    $this->glyph = $glyph;
    return $this;
  }

  public function getGlyph() {
    return $this->glyph;
  }

  protected function willSendResponse($response) {
    $request = $this->getRequest();
    $response = parent::willSendResponse($response);

    $console = $request->getApplicationConfiguration()->getConsole();

    if ($console) {
      $response = PhutilSafeHTML::applyFunction(
        'str_replace',
        hsprintf('<darkconsole />'),
        $console->render($request),
        $response);
    }

    return $response;
  }

  protected function getBody() {
    $user = null;
    $request = $this->getRequest();
    if ($request) {
      $user = $request->getUser();
    }

    $header_chrome = null;
    if ($this->getShowChrome()) {
      $header_chrome = $this->menuContent;
    }

    $developer_warning = null;
    if (PhabricatorEnv::getEnvConfig('phabricator.developer-mode') &&
        DarkConsoleErrorLogPluginAPI::getErrors()) {
      $developer_warning = phutil_tag_div(
        'aphront-developer-error-callout',
        pht(
          'This page raised PHP errors. Find them in DarkConsole '.
          'or the error log.'));
    }

    // Render the "you have unresolved setup issues..." warning.
    $setup_warning = null;
    if ($user && $user->getIsAdmin()) {
      $open = PhabricatorSetupCheck::getOpenSetupIssueKeys();
      if ($open) {
        $setup_warning = phutil_tag_div(
          'setup-warning-callout',
          phutil_tag(
            'a',
            array(
              'href' => '/config/issue/',
              'title' => implode(', ', $open),
            ),
            pht('You have %d unresolved setup issue(s)...', count($open))));
      }
    }

    Javelin::initBehavior(
      'scrollbar',
      array(
        'nodeID' => 'phabricator-standard-page',
        'isMainContent' => true,
      ));

    $main_page = phutil_tag(
      'div',
      array(
        'id' => 'phabricator-standard-page',
        'class' => 'phabricator-standard-page',
      ),
      array(
        $developer_warning,
        $setup_warning,
        $header_chrome,
        phutil_tag(
          'div',
          array(
            'id' => 'phabricator-standard-page-body',
            'class' => 'phabricator-standard-page-body',
          ),
          $this->renderPageBodyContent()),
      ));

    $durable_column = null;
    if ($this->getShowDurableColumn()) {
      $is_visible = $this->getDurableColumnVisible();
      $durable_column = id(new ConpherenceDurableColumnView())
        ->setSelectedConpherence(null)
        ->setUser($user)
        ->setVisible($is_visible)
        ->setInitialLoad(true);
    }

    Javelin::initBehavior('quicksand-blacklist', array(
      'patterns' => $this->getQuicksandURIPatternBlacklist(),
    ));

    return phutil_tag(
      'div',
      array(
        'class' => 'main-page-frame',
      ),
      array(
        $main_page,
        $durable_column,
      ));
  }

  private function renderPageBodyContent() {
    $console = $this->getConsole();

    return array(
      ($console ? hsprintf('<darkconsole />') : null),
      parent::getBody(),
      $this->renderFooter(),
    );
  }

  protected function getTail() {
    $request = $this->getRequest();
    $user = $request->getUser();

    $tail = array(
      parent::getTail(),
    );

    $response = CelerityAPI::getStaticResourceResponse();

    if (PhabricatorEnv::getEnvConfig('notification.enabled')) {
      if ($user && $user->isLoggedIn()) {

        $client_uri = PhabricatorEnv::getEnvConfig('notification.client-uri');
        $client_uri = new PhutilURI($client_uri);
        if ($client_uri->getDomain() == 'localhost') {
          $this_host = $this->getRequest()->getHost();
          $this_host = new PhutilURI('http://'.$this_host.'/');
          $client_uri->setDomain($this_host->getDomain());
        }

        $subscriptions = $this->pageObjects;
        if ($user) {
          $subscriptions[] = $user->getPHID();
        }

        if ($request->isHTTPS()) {
          $client_uri->setProtocol('wss');
        } else {
          $client_uri->setProtocol('ws');
        }

        Javelin::initBehavior(
          'aphlict-listen',
          array(
            'websocketURI'  => (string)$client_uri,
            'pageObjects'   => array_fill_keys($this->pageObjects, true),
            'subscriptions' => $subscriptions,
          ));
      }
    }

    $tail[] = $response->renderHTMLFooter();

    return $tail;
  }

  protected function getBodyClasses() {
    $classes = array();

    if (!$this->getShowChrome()) {
      $classes[] = 'phabricator-chromeless-page';
    }

    $agent = AphrontRequest::getHTTPHeader('User-Agent');

    // Try to guess the device resolution based on UA strings to avoid a flash
    // of incorrectly-styled content.
    $device_guess = 'device-desktop';
    if (preg_match('@iPhone|iPod|(Android.*Chrome/[.0-9]* Mobile)@', $agent)) {
      $device_guess = 'device-phone device';
    } else if (preg_match('@iPad|(Android.*Chrome/)@', $agent)) {
      $device_guess = 'device-tablet device';
    }

    $classes[] = $device_guess;

    if (preg_match('@Windows@', $agent)) {
      $classes[] = 'platform-windows';
    } else if (preg_match('@Macintosh@', $agent)) {
      $classes[] = 'platform-mac';
    } else if (preg_match('@X11@', $agent)) {
      $classes[] = 'platform-linux';
    }

    if ($this->getRequest()->getStr('__print__')) {
      $classes[] = 'printable';
    }

    if ($this->getRequest()->getStr('__aural__')) {
      $classes[] = 'audible';
    }

    return implode(' ', $classes);
  }

  private function getConsole() {
    if ($this->disableConsole) {
      return null;
    }
    return $this->getRequest()->getApplicationConfiguration()->getConsole();
  }

  private function renderFooter() {
    if (!$this->getShowChrome()) {
      return null;
    }

    if (!$this->getShowFooter()) {
      return null;
    }

    $items = PhabricatorEnv::getEnvConfig('ui.footer-items');
    if (!$items) {
      return null;
    }

    $foot = array();
    foreach ($items as $item) {
      $name = idx($item, 'name', pht('Unnamed Footer Item'));

      $href = idx($item, 'href');
      if (!PhabricatorEnv::isValidWebResource($href)) {
        $href = null;
      }

      if ($href !== null) {
        $tag = 'a';
      } else {
        $tag = 'span';
      }

      $foot[] = phutil_tag(
        $tag,
        array(
          'href' => $href,
        ),
        $name);
    }
    $foot = phutil_implode_html(" \xC2\xB7 ", $foot);

    return phutil_tag(
      'div',
      array(
        'class' => 'phabricator-standard-page-footer grouped',
      ),
      $foot);
  }

  public function renderForQuicksand() {
    // TODO: We could run a lighter version of this and skip some work. In
    // particular, we end up including many redundant resources.
    $this->willRenderPage();
    $response = $this->renderPageBodyContent();
    $response = $this->willSendResponse($response);

    return array(
      'content' => hsprintf('%s', $response),
    );
  }

  private function getQuicksandURIPatternBlacklist() {
    $applications = PhabricatorApplication::getAllApplications();

    $blacklist = array();
    foreach ($applications as $application) {
      $blacklist[] = $application->getQuicksandURIPatternBlacklist();
    }

    return array_mergev($blacklist);
  }

  private function getUserPreference($key, $default = null) {
    $request = $this->getRequest();
    if (!$request) {
      return $default;
    }

    $user = $request->getUser();
    if (!$user) {
      return $default;
    }

    return $user->loadPreferences()->getPreference($key, $default);
  }

}