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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $wgExtensionCredits['parserhook'][] = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                  'name'=>'NRC - Recommendations',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                  'url'=>'http://www.nrc.gc.ca',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                  'author'=>'Luc Belliveau',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                  'description'=>'Recommendation extension based on engines provided by the National Research Council.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                  'version'=>'0.0.1'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                $wgHooks['OutputPageBeforeHTML'][] = 'RecommendationsInit';  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                function RecommendationsInit($article, &$text) { | 
            
                            
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                  global $wgTitle, $wgUser;  | 
            
            
                                                        
            
                                    
            
            
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                  $loggedIn = $wgUser->mId != 0;  | 
            
            
                                                        
            
                                    
            
            
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                  $email = str_replace("'", "\\'", $wgUser->mEmail); | 
            
            
                                                        
            
                                    
            
            
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                  if (strpos($email, "\n") !== false) return false;  | 
            
            
                                                        
            
                                    
            
            
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                  $articleId = $wgTitle->mArticleID;  | 
            
            
                                                        
            
                                    
            
            
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                  $context_obj1 = '';  | 
            
            
                                                        
            
                                    
            
            
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                  if ($articleId == 1) { | 
            
            
                                                        
            
                                    
            
            
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                    if ($loggedIn) { | 
            
            
                                                        
            
                                    
            
            
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                      $context = 'article_c1';  | 
            
            
                                                        
            
                                    
            
            
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                    } else { | 
            
            
                                                        
            
                                    
            
            
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                      $context = 'article_c2';  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                  } else { | 
            
            
                                                        
            
                                    
            
            
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                    $context_obj1 = $articleId;  | 
            
            
                                                        
            
                                    
            
            
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                    if ($loggedIn) { | 
            
            
                                                        
            
                                    
            
            
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                      $context = 'article_c3';  | 
            
            
                                                        
            
                                    
            
            
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                    } else { | 
            
            
                                                        
            
                                    
            
            
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                      $context = 'article_c4';  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                  /**  | 
            
            
                                                        
            
                                    
            
            
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                   * Automatically get the user's GCconnex GUID, solely based on email.  | 
            
            
                                                        
            
                                    
            
            
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                   *  | 
            
            
                                                        
            
                                    
            
            
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                   * TODO: This must be replaced by SSO.  | 
            
            
                                                        
            
                                    
            
            
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                   */  | 
            
            
                                                        
            
                                    
            
            
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                  $login_context = 'false';  | 
            
            
                                                        
            
                                    
            
            
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                  if ($loggedIn && !isset($_SESSION['GCconnex_GUID'])) { | 
            
            
                                                        
            
                                    
            
            
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                    $cx = stream_context_create([  | 
            
            
                                                        
            
                                    
            
            
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                      'http'=> [  | 
            
            
                                                        
            
                                    
            
            
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                        'proxy'=>'tcp://proxy.paz.nrc.gc.ca:8080',  | 
            
            
                                                        
            
                                    
            
            
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                        'request_fulluri' => true,  | 
            
            
                                                        
            
                                    
            
            
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                      ],  | 
            
            
                                                        
            
                                    
            
            
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                      // 'https'=>['proxy'=>'proxy.paz.nrc.gc.ca:8080'],  | 
            
            
                                                        
            
                                    
            
            
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                    ]);  | 
            
            
                                                        
            
                                    
            
            
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                    $searchUrl = "http://intranet.canada.ca/search-recherche";  | 
            
            
                                                        
            
                                    
            
            
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                    $query = "query-recherche-eng.aspx?a=s&s=3&chk4=on";  | 
            
            
                                                        
            
                                    
            
            
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                    $encodedEmail = urlencode($email);  | 
            
            
                                                        
            
                                    
            
            
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                    $data = file_get_contents("$searchUrl/$query&q=$encodedEmail", False, $cx); | 
            
            
                                                        
            
                                    
            
            
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                    $re = '/https:\/\/gcconnex.gc.ca\/profile\/(.*?)"/';  | 
            
            
                                                        
            
                                    
            
            
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                    if (preg_match($re, $data, $m) === 1) { | 
            
            
                                                        
            
                                    
            
            
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                      $gcconnex_username = $m[1];  | 
            
            
                                                        
            
                                    
            
            
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                      $profile_url = "https://gcconnex.gc.ca/profile/$gcconnex_username";  | 
            
            
                                                        
            
                                    
            
            
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                      $profileData = file_get_contents($profile_url, False, $cx);  | 
            
            
                                                        
            
                                    
            
            
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                      $re = '/"guid":(.*?),/';  | 
            
            
                                                        
            
                                    
            
            
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                      if (preg_match($re, $profileData, $pm)) { | 
            
            
                                                        
            
                                    
            
            
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                        $_SESSION['GCconnex_GUID'] = $pm[1];  | 
            
            
                                                        
            
                                    
            
            
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                        $login_context = 'true';  | 
            
            
                                                        
            
                                    
            
            
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                      }  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                  if ($loggedIn) { | 
            
            
                                                        
            
                                    
            
            
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                    $gcconnex_guid = str_replace("'", "\\'", $_SESSION['GCconnex_GUID']); | 
            
            
                                                        
            
                                    
            
            
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                    if (strpos($gcconnex_guid, "\n") !== false) return false;  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                  $script = <<<DOC  | 
            
            
                                                        
            
                                    
            
            
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                <style>  | 
            
            
                                                        
            
                                    
            
            
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                  .nrcRecommendationContainer { | 
            
            
                                                        
            
                                    
            
            
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                    overflow: hidden;  | 
            
            
                                                        
            
                                    
            
            
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                    padding-top: 10px;  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                  .nrcRecommendationContainer:hover { | 
            
            
                                                        
            
                                    
            
            
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                    overflow: visible;  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                  .nrcRecommendationContainer div.fieldset-container { | 
            
            
                                                        
            
                                    
            
            
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                    border: 1px solid #000;  | 
            
            
                                                        
            
                                    
            
            
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                    background-color: #eee;  | 
            
            
                                                        
            
                                    
            
            
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                    width: 500px;  | 
            
            
                                                        
            
                                    
            
            
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                    z-index: 1;  | 
            
            
                                                        
            
                                    
            
            
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                    position: relative;  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                </style>  | 
            
            
                                                        
            
                                    
            
            
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                <link rel="stylesheet" type="text/css" href="/extensions/NRC_Recommendations/static/css/main.css">  | 
            
            
                                                        
            
                                    
            
            
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                <script type="text/javascript">  | 
            
            
                                                        
            
                                    
            
            
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                  var NRC_context = { | 
            
            
                                                        
            
                                    
            
            
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                    context: '$context',  | 
            
            
                                                        
            
                                    
            
            
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                    context_obj1: '$context_obj1',  | 
            
            
                                                        
            
                                    
            
            
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                    email: '$email',  | 
            
            
                                                        
            
                                    
            
            
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                    gcconnex_guid: '$gcconnex_guid',  | 
            
                            
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                    login_context: $login_context,  | 
            
            
                                                        
            
                                    
            
            
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                  }  | 
            
            
                                                        
            
                                    
            
            
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                </script>  | 
            
            
                                                        
            
                                    
            
            
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                <script src="/extensions/NRC_Recommendations/gcpedia.js"></script>  | 
            
            
                                                        
            
                                    
            
            
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                DOC;  | 
            
            
                                                        
            
                                    
            
            
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                  $text = $text . "\n\n" .$script;  | 
            
            
                                                        
            
                                    
            
            
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                  return true;  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: