<?php
// $Id$

/**
 * @file
 * Navigate Libraries Framework
 */
 
 
// Initialize Plugin Implementations
global $_navigate;
if (!isset($_navigate['hooks']['libraries'])) {
  $_navigate['hooks']['libraries'] = module_implements('navigate_libraries');
}

 
function navigate_libraries($reset = FALSE) {
  global $_navigate;
  static $libraries;

  if (isset($libraries) && !$reset) {
    return $libraries;
  }
  
  // Load Navigate Libraries
  $libraries = array(
    // Navigate Initializing Libraries
    'navigate.init.js' => array(
      'scope' => 'navigate-init'
    ),
    'jquery.js' => array(
      'title' => t('jQuery'),
      'scope' => 'navigate-init',
      'vendor url' => 'http://jquery.com/',
      'download url' => 'http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js',
      'error_message' => t('Navigate does not use the packaged jQuery from Drupal, nor from the jQuery Update module. Instead, Navigate relies on using a <a href="!no-conflict" target="_blank">no-conflict</a> version of jQuery. This ensures that jQuery is updated to the latest version and that it works completely with Navigate and any installed plugins.', array('!no-conflict' => 'http://api.jquery.com/jQuery.noConflict/')),
    ),
    'jquery-ui.js' => array(
      'title' => t('jQuery UI'),
      'scope' => 'navigate-init',
      'vendor url' => 'http://jqueryui.com/',
      'download url' => 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js',
      'error_message' => t('Drupal does not provide jQuery UI by default. If you have the jQuery UI module installed, Navigate does not use it. Instead, Navigate relies on using a <a href="!no-conflict" target="_blank">no-conflict</a> version of jQuery. This ensures that jQuery is updated to the latest version and that it works completely with Navigate and any installed plugins.', array('!no-conflict' => 'http://api.jquery.com/jQuery.noConflict/')),
    ),
    // Navigate Core Libraries
    'navigate.core.js' => array(),
    'jquery.cookie.js' => array(
      'title' => t('jQuery Cookie'),
      'vendor url' => 'https://github.com/carhartl/jquery-cookie',
      'download url' => 'https://github.com/carhartl/jquery-cookie/raw/master/jquery.cookie.js',
    ),
    'jquery.hotkeys.js' => array(
      'title' => t('jQuery Hotkeys'),
      'vendor url' => 'https://github.com/jeresig/jquery.hotkeys',
      'download url' => 'https://github.com/jeresig/jquery.hotkeys/raw/master/jquery.hotkeys.js',
    ),
    'jquery.hoverintent.js' => array(
      'title' => t('jQuery hoverIntent'),
      'vendor url' => 'http://cherne.net/brian/resources/jquery.hoverIntent.html',
      'download url' => 'http://cherne.net/brian/resources/jquery.hoverIntent.minified.js',
    ),
    'jquery.hoverintent.js' => array(
      'title' => t('jQuery hoverIntent'),
      'vendor url' => 'http://cherne.net/brian/resources/jquery.hoverIntent.html',
      'download url' => 'http://cherne.net/brian/resources/jquery.hoverIntent.minified.js',
    ),
    'jquery.mousewheel.js' => array(
      'title' => t('jQuery Mousewheel'),
      'vendor url' => 'https://github.com/brandonaaron/jquery-mousewheel',
      'download url' => 'https://github.com/brandonaaron/jquery-mousewheel/raw/master/jquery.mousewheel.js',
    ),
    'jquery.mwheelintent.js' => array(
      'title' => t('jQuery Mousewheel Intent'),
      'vendor url' => 'http://www.protofunc.com/scripts/jquery/mwheelIntent/index.html',
      'download url' => array('http://jscrollpane.kelvinluck.com/script/mwheelIntent.js', 'http://www.protofunc.com/scripts/jquery/mwheelIntent/mwheelIntent.js'),
    ),
    'jquery.pngFix.js' => array(
      'title' => t('jQuery PNG Fix'),
      'vendor url' => 'http://jquery.andreaseberhard.de/pngFix/index.html',
      'download url' => 'http://jquery.andreaseberhard.de/pngFix/jquery.pngFix.js',
    ),
    'jquery.shadowanimation.js' => array(
      'title' => t('jQuery Shadow Animation'),
      'vendor url' => 'http://www.bitstorm.org/jquery/shadow-animation/',
      'download url' => 'http://www.bitstorm.org/jquery/shadow-animation/jquery.animate-shadow.js',
    ),
    'jquery.tokeninput.js' => array(
      'title' => t('jQuery Token Input'),
      'vendor url' => 'https://github.com/markcarver/jQuery-Tokenizing-Autocomplete-Plugin',
      'download url' => 'https://github.com/markcarver/jQuery-Tokenizing-Autocomplete-Plugin/raw/master/src/jquery.tokeninput.js',
    ),
    'xregexp.js' => array(
      'title' => t('XRegExp'),
      'vendor url' => 'http://xregexp.com/',
      'download url' => 'http://xregexp.com/xregexp.js',
    ),
  );
  
  // Load plugin libraries
  foreach ($_navigate['hooks']['libraries'] as $plugin) {
    $function = $plugin .'_navigate_libraries';
    if (function_exists($function)) {
      $plugin_libraries = (array) $function();
      foreach ($plugin_libraries as $name => $properties) {
        if (isset($libraries[$name])) {
          if (!isset($properties['overwrite']) || $properties['overwrite'] === FALSE) {
            unset($plugin_libraries[$name]);
            continue;
          }
        }
        if (!isset($plugin_libraries[$name]['plugin'])) {
          $plugin_libraries[$name]['plugin'] = $plugin;
        }
      }
      $libraries = array_merge($libraries, $plugin_libraries);
    }
  }
  
  // Load defaults for libraries
  $library_paths = navigate_library_paths();
  foreach ($libraries as $library => $properties) {
    $libraries[$library] += array(
      'author' => '',
      'version' => '',
      'vendor url' => '',
      'download url' => '',
      'library path' => '',
      'plugin' => 'navigate',
      'optional' => FALSE,
    );
    $library_path = &$libraries[$library]['library path'];
    
    if (empty($library_path)) {
      foreach($library_paths as $path) {
        $path = $path . '/' . $library;
        if (file_exists($path)) {
          $library_path = $path;
          $libraries[$library]['installed'] = TRUE;
          break;
        }
      }
    }
    else {
      if (file_exists($library_path)) {
        $libraries[$library]['installed'] = TRUE;
      }
    }
    if (!empty($library_path)) {
      $contents = file_get_contents($library_path);
      // Only get the first comment block close to the beginning of file
      if (preg_match("/(\/\*.+\*\/)/s", $contents, $match)) {
        $pos = strpos($match[1], '*/') + 2;
        $libraries[$library]['details'] = substr($match[1], 0, $pos);
      }
    }
    if (!isset($libraries[$library]['installed']) && $libraries[$library]['optional'] == FALSE) {
      $libraries[$library]['error'] = t('This library could not be detected.');
      if (isset($libraries[$library]['error_message'])) {
        $libraries[$library]['error'] .= '<p>' . $libraries[$library]['error_message'] . '</p>';
      }
    }
  }
  return $libraries;
}

 
function navigate_admin_libraries_check() {
  include_once './includes/install.inc';
  navigate_add_js('navigate.admin.js');
  navigate_add_css('navigate.admin.css');
    
  $form = array();
  $description = t('Navigate uses many JavaScript libraries to function properly. The table below will indicate the status of each library. Drupal only allows third-party applications with GPL 2+ and compatible licenses to be packaged. Not all of the required/optional libraries may be available upon initial installation of Navigate and may require extra steps to configure.');
  $form['description'] = array(
    '#value' => $description,
  );
  $form['paths'] = array(
    '#type' => 'fieldset',
    '#title' => t('Library Lookup Paths'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#description' => 'The following paths are the locations where Navigate looks for the supported libraries:<ul><li>' . implode('</li><li>', navigate_library_paths(TRUE)) . '</li></ul>',
  );
  
  $libraries = navigate_libraries(TRUE);
  $status = array();
  
  foreach ($libraries as $name => $library) {
    // Only process those with titles
    if (isset($library['title'])) {
      $info = array();
      $plugin = $library['plugin'];
      $title = t('@library', array('@library' => $library['title'])) . (!empty($library['version']) ? ' (' . $library['version'] . ')' : '');
      $homepage = ($library['vendor url'] ? t('Library homepage: <a href="!vendor-url" target="_blank">!vendor-url</a>', array('!vendor-url' => $library['vendor url'])) : '');
      $status[$plugin][$name] = array(
        'severity' => (isset($library['error']) ? REQUIREMENT_ERROR : ($library['installed'] ? REQUIREMENT_OK : REQUIREMENT_WARNING)),
        'title' => $title,
        'value' => (isset($library['installed']) ? t('Installed') : ($library['download url'] && !isset($library['installed']) ? t(($library['optional'] ? t('Optional') : t('Required')) . ' | <a href="!install-url">Install</a>', array('!install-url' => url('admin/settings/navigate/libraries/install/' . $name))) : '')),
        'description' => (isset($library['error']) ? $library['error'] : ''),
      );
    
      // Create more information section
      if (!empty($library['library path'])) {
        $info['Installed Path'] = $library['library path'];
      }
    
      // Parse file details using doxygen info
      if (!empty($library['details'])) {
        // Parse authoring (and email) information
        if (preg_match('/(@author|author|by)\s*[:\-|=]?\s*([\w\s]+)\s*[:\-|=]?\s*<?([\w.\-]+@[\w.\-]+[.]\w{2,})?>?/i', $library['details'], $match)) {
          $author = trim($match[2]);
          $email = FALSE;
          if (isset($match[3])) {
            $email = trim($match[3]);
            $author .= ' &lt;<a href="mailto:' . $email . '">' . $email . '</a>&gt;';
          }
          if (!empty($author)) {
            $info['Author'] = $author;
          }
        }
        // Parse version information
        if (preg_match('/(' . $library['title'] . '|@version|version|ver|v):?\s*([0-9.]+)/i', $library['details'], $match)) {
          $version = $match[2];
          $info['Version'] = $version;
          $status[$plugin][$name]['value'] = $version;
        }
      }
        
      if (!empty($library['vendor url'])) {
        $info['Website'] = t('<a href="!vendor-url" target="_blank">!vendor-url</a>', array('!vendor-url' => $library['vendor url']));
      }
    
      if (!empty($library['details'])) {
        $info['Show Details'] = '<pre class="library-details">' . htmlspecialchars($library['details']) . '</pre>';
      }
    
      $description = '';
      if (count($info) > 0) {
        $description = '<div class="library-info"><dl>';
        foreach ($info as $label => $value) {
          if ($label == 'Show Details') {
            $description .= "<dt><a href=\"#\" class=\"library-details\">$label</a></dt><dd>$value</dd>";
          }
          else {
            $description .= "<dt>$label:</dt><dd>$value</dd>";
          }
        }
        $description .= '</dl></div>';
        $status[$plugin][$name]['title'] .= ' - <a href="#" class="library-info">More Information</a>';
        $status[$plugin][$name]['description'] .= $description;
      }
    }
  }
  
  foreach ($status as $plugin => $report) {
    if ($plugin == 'navigate') {
      $title = t('Navigate');
    }
    else {
      $function = $plugin . '_navigate_plugin';
      if (function_exists($function)) {
        $title = $function('name');
      }
      else {
        $title = t('Unknown Plugin: ' . $plugin);
      }
    }
    $form['status'][$plugin] = array(
      '#title' => $title,
      '#type' => 'fieldset',
      '#value' => theme('status_report', $status[$plugin])
    );
  }
  return $form;
}

function navigate_admin_libraries_install($form_state, $name = FALSE) {
  $form = array();
  $libraries = navigate_libraries();
  if (isset($libraries[$name]) && isset($libraries[$name]['title'])) {
    $libraries[$name]['filename'] = $name;
    $form['library'] = array(
      '#type' => 'value', 
      '#value' => $libraries[$name],
    );
    $form = confirm_form(
      $form, 
      t('Install library: %title?', array('%title' => $libraries[$name]['title'])), 
      'admin/settings/navigate/libraries', 
      t('This will install the following library in: %path', array('%path' => file_directory_path() . '/navigate/libraries')), 
      t('Install'), 
      t('Cancel'));
  }
  else {
    drupal_goto('admin/settings/navigate/libraries');
  }
  return $form;
}

function navigate_admin_libraries_install_submit($form, &$form_state) {
  $library = $form_state['values']['library'];
  $source = $library['download url'];
  if (!empty($source)) {
    $file = file_directory_path() . '/navigate/libraries/' . $library['filename'];
    if (ob_get_level()) {
      ob_end_clean();
    }
    $content = '';
    // Transfer file in 1024 byte chunks to save memory usage.
    if ($fd = fopen($source, 'rb')) {
      while (!feof($fd)) {
        $content .= fread($fd, 1024);
      }
      fclose($fd);
      file_save_data($content, $file, FILE_EXISTS_REPLACE);
    }
    else {
      drupal_set_message('Could not install library, download url no longer valid: !url', array('!url' => $source), 'error');
    }
  }
  $form_state['redirect'] = 'admin/settings/navigate/libraries';
}

function navigate_libraries_check($refresh = FALSE) {
  $libraries = navigate_libraries($refresh);
  $passed = TRUE;
  foreach($libraries as $name => $library) {
    if (!(isset($library['installed'])) && $library['optional'] === FALSE) {
      global $firebug;
      $firebug->log($library, $name);
      $passed = FALSE;
      break;
    }
  }
  return $passed;
}

function navigate_library_paths($base_path = FALSE) {
  global $_navigate;
  if ($base_path) {
    $base_path = base_path();
  }
  // Include Navigate defaults
  $paths = array(
    ($base_path ? $base_path : '') . drupal_get_path('module', 'navigate') . '/js',
    ($base_path ? $base_path : '') . drupal_get_path('module', 'navigate') . '/libraries',
  );
  // Include all plugin defaults
  foreach ($_navigate['hooks']['plugin'] as $plugin) {
    if (module_exists($plugin)) {
      $plugin_path = drupal_get_path('module', $plugin);
      $paths = array_merge($paths, array(
        ($base_path ? $base_path : '') . drupal_get_path('module', $plugin) . '/js',
        ($base_path ? $base_path : '') . drupal_get_path('module', $plugin) . '/libraries',
      ));
    }
  }
  // Include specific plugin library paths
  foreach ($_navigate['hooks']['libraries'] as $plugin) {
    $function = $plugin .'_navigate_libraries';
    if (function_exists($function)) {
      $library_paths = (array) $function(TRUE);
      if ($base_path) {
        foreach ($library_paths as $key => $value) {
          $library_paths[$key] = $base_path . $value;
        }
      }
      $paths = array_merge($paths, $library_paths);
    }
  }
  // Include Navigate file libraries, all sites libraries, specific site libraries and theme libraries
  $files_path = file_directory_path() . '/navigate';
  file_check_directory($files_path, TRUE);
  $files_path = file_directory_path() . '/navigate/libraries';
  file_check_directory($files_path, TRUE);
  
  $paths = array_merge($paths, array(
    ($base_path ? $base_path : '') . $files_path,
    ($base_path ? $base_path : '') . 'sites/all/libraries/navigate',
    ($base_path ? $base_path : '') . conf_path() . '/libraries/navigate',
    ($base_path ? $base_path : '') . path_to_theme() . '/libraries/navigate',
  ));
  return $paths;
}