| Total Complexity | 59 | 
| Total Lines | 457 | 
| Duplicated Lines | 0 % | 
| Changes | 0 | ||
Complex classes like OAuthUserHelper often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use OAuthUserHelper, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 27 | class OAuthUserHelper implements IMediaWikiClient  | 
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| 28 | { | 
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| 29 | const TOKEN_REQUEST = 'request';  | 
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| 30 | const TOKEN_ACCESS = 'access';  | 
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| 31 | /** @var PDOStatement */  | 
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| 32 | private static $tokenCountStatement = null;  | 
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| 33 | /** @var PDOStatement */  | 
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| 34 | private $getTokenStatement;  | 
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| 35 | /**  | 
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| 36 | * @var User  | 
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| 37 | */  | 
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| 38 | private $user;  | 
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| 39 | /**  | 
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| 40 | * @var PdoDatabase  | 
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| 41 | */  | 
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| 42 | private $database;  | 
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| 43 | /**  | 
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| 44 | * @var IOAuthProtocolHelper  | 
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| 45 | */  | 
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| 46 | private $oauthProtocolHelper;  | 
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| 47 | /**  | 
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| 48 | * @var bool|null Is the user linked to OAuth  | 
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| 49 | */  | 
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| 50 | private $linked;  | 
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| 51 | private $partiallyLinked;  | 
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| 52 | /** @var OAuthToken */  | 
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| 53 | private $accessToken;  | 
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| 54 | /** @var bool */  | 
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| 55 | private $accessTokenLoaded = false;  | 
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| 56 | /**  | 
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| 57 | * @var OAuthIdentity  | 
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| 58 | */  | 
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| 59 | private $identity = null;  | 
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| 60 | /**  | 
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| 61 | * @var bool  | 
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| 62 | */  | 
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| 63 | private $identityLoaded = false;  | 
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| 64 | /**  | 
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| 65 | * @var SiteConfiguration  | 
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| 66 | */  | 
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| 67 | private $siteConfiguration;  | 
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| 68 | |||
| 69 | private $legacyTokens;  | 
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| 70 | |||
| 71 | #region Static methods  | 
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| 72 | |||
| 73 | public static function findUserByRequestToken($requestToken, PdoDatabase $database)  | 
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| 74 |     { | 
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| 75 | $statement = $database->prepare(<<<'SQL'  | 
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| 76 | SELECT u.* FROM user u  | 
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| 77 | INNER JOIN oauthtoken t ON t.user = u.id  | 
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| 78 | WHERE t.type = :type AND t.token = :token  | 
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| 79 | SQL  | 
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| 80 | );  | 
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| 81 |         $statement->execute(array(':type' => self::TOKEN_REQUEST, ':token' => $requestToken)); | 
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| 82 | |||
| 83 | /** @var User $user */  | 
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| 84 | $user = $statement->fetchObject(User::class);  | 
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| 85 | $statement->closeCursor();  | 
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| 86 | |||
| 87 |         if ($user === false) { | 
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                         | 
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| 88 |             throw new ApplicationLogicException('Token not found in store, please try again'); | 
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| 89 | }  | 
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| 90 | |||
| 91 | $user->setDatabase($database);  | 
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| 92 | |||
| 93 | return $user;  | 
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| 94 | }  | 
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| 95 | |||
| 96 | private static function userIsFullyLinked(User $user, PdoDatabase $database = null)  | 
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| 97 |     { | 
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| 98 |         if (self::$tokenCountStatement === null && $database === null) { | 
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| 99 |             throw new ApplicationLogicException('Static link request without initialised statement'); | 
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| 100 | }  | 
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| 101 | |||
| 102 | return self::runTokenCount($user->getId(), $database, self::TOKEN_ACCESS);  | 
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| 103 | }  | 
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| 104 | |||
| 105 | private static function userIsPartiallyLinked(User $user, PdoDatabase $database = null)  | 
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| 106 |     { | 
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| 107 |         if (self::$tokenCountStatement === null && $database === null) { | 
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| 108 |             throw new ApplicationLogicException('Static link request without initialised statement'); | 
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| 109 | }  | 
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| 110 | |||
| 111 |         if (self::userIsFullyLinked($user, $database)) { | 
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| 112 | return false;  | 
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| 113 | }  | 
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| 114 | |||
| 115 | return self::runTokenCount($user->getId(), $database, self::TOKEN_REQUEST)  | 
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| 116 | || $user->getOnWikiName() == null;  | 
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| 117 | }  | 
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| 118 | |||
| 119 | /**  | 
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| 120 | * @param PdoDatabase $database  | 
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| 121 | */  | 
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| 122 | private static function prepareTokenCountStatement(PdoDatabase $database)  | 
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| 123 |     { | 
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| 124 |         if (self::$tokenCountStatement === null) { | 
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| 125 |             self::$tokenCountStatement = $database->prepare('SELECT COUNT(*) FROM oauthtoken WHERE user = :user AND type = :type'); | 
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| 126 | }  | 
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| 127 | }  | 
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| 128 | |||
| 129 | private static function runTokenCount($userId, $database, $tokenType)  | 
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| 130 |     { | 
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| 131 |         if (self::$tokenCountStatement === null) { | 
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| 132 | self::prepareTokenCountStatement($database);  | 
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| 133 | }  | 
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| 134 | |||
| 135 | self::$tokenCountStatement->execute(array(  | 
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| 136 | ':user' => $userId,  | 
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| 137 | ':type' => $tokenType,  | 
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| 138 | ));  | 
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| 139 | |||
| 140 | $tokenCount = self::$tokenCountStatement->fetchColumn();  | 
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| 141 | $linked = $tokenCount > 0;  | 
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| 142 | self::$tokenCountStatement->closeCursor();  | 
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| 143 | |||
| 144 | return $linked;  | 
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| 145 | }  | 
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| 146 | |||
| 147 | #endregion Static methods  | 
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| 148 | |||
| 149 | /**  | 
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| 150 | * OAuthUserHelper constructor.  | 
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| 151 | *  | 
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| 152 | * @param User $user  | 
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| 153 | * @param PdoDatabase $database  | 
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| 154 | * @param IOAuthProtocolHelper $oauthProtocolHelper  | 
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| 155 | * @param SiteConfiguration $siteConfiguration  | 
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| 156 | */  | 
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| 157 | public function __construct(  | 
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| 158 | User $user,  | 
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| 159 | PdoDatabase $database,  | 
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| 160 | IOAuthProtocolHelper $oauthProtocolHelper,  | 
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| 161 | SiteConfiguration $siteConfiguration  | 
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| 162 |     ) { | 
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| 163 | $this->user = $user;  | 
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| 164 | $this->database = $database;  | 
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| 165 | $this->oauthProtocolHelper = $oauthProtocolHelper;  | 
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| 166 | |||
| 167 | $this->linked = null;  | 
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| 168 | $this->partiallyLinked = null;  | 
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| 169 | $this->siteConfiguration = $siteConfiguration;  | 
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| 170 | |||
| 171 | self::prepareTokenCountStatement($database);  | 
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| 172 |         $this->getTokenStatement = $this->database->prepare('SELECT * FROM oauthtoken WHERE user = :user AND type = :type'); | 
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| 173 | |||
| 174 | $this->legacyTokens = $this->siteConfiguration->getOauthLegacyConsumerTokens();  | 
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| 175 | }  | 
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| 176 | |||
| 177 | /**  | 
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| 178 | * Determines if the user is fully connected to OAuth.  | 
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| 179 | *  | 
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| 180 | * @return bool  | 
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| 181 | */  | 
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| 182 | public function isFullyLinked()  | 
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| 183 |     { | 
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| 184 |         if ($this->linked === null) { | 
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| 185 | $this->linked = self::userIsFullyLinked($this->user, $this->database);  | 
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| 186 | }  | 
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| 187 | |||
| 188 | return $this->linked;  | 
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| 189 | }  | 
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| 190 | |||
| 191 | /**  | 
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| 192 | * Attempts to figure out if a user is partially linked to OAuth, and therefore needs to complete the OAuth  | 
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| 193 | * procedure before configuring.  | 
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| 194 | * @return bool  | 
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| 195 | */  | 
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| 196 | public function isPartiallyLinked()  | 
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| 197 |     { | 
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| 198 |         if ($this->partiallyLinked === null) { | 
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| 199 | $this->partiallyLinked = self::userIsPartiallyLinked($this->user, $this->database);  | 
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| 200 | }  | 
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| 201 | |||
| 202 | return $this->partiallyLinked;  | 
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| 203 | }  | 
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| 204 | |||
| 205 | public function canCreateAccount()  | 
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| 206 |     { | 
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| 207 | return $this->isFullyLinked()  | 
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| 208 | && $this->getIdentity(true)->getGrantBasic()  | 
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| 209 | && $this->getIdentity(true)->getGrantHighVolume()  | 
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| 210 | && $this->getIdentity(true)->getGrantCreateAccount();  | 
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| 211 | }  | 
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| 212 | |||
| 213 | public function canWelcome()  | 
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| 214 |     { | 
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| 215 | return $this->isFullyLinked()  | 
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| 216 | && $this->getIdentity(true)->getGrantBasic()  | 
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| 217 | && $this->getIdentity(true)->getGrantHighVolume()  | 
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| 218 | && $this->getIdentity(true)->getGrantCreateEditMovePage();  | 
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| 219 | }  | 
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| 220 | |||
| 221 | /**  | 
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| 222 | * @throws OAuthException  | 
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| 223 | * @throws CurlException  | 
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| 224 | * @throws OptimisticLockFailedException  | 
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| 225 | * @throws Exception  | 
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| 226 | */  | 
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| 227 | public function refreshIdentity()  | 
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| 228 |     { | 
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| 229 | $this->loadIdentity();  | 
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| 230 | |||
| 231 |         if ($this->identity === null) { | 
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| 232 | $this->identity = new OAuthIdentity();  | 
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| 233 | $this->identity->setUserId($this->user->getId());  | 
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| 234 | $this->identity->setDatabase($this->database);  | 
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| 235 | }  | 
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| 236 | |||
| 237 | $token = $this->loadAccessToken();  | 
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| 238 | |||
| 239 |         try { | 
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| 240 | $rawTicket = $this->oauthProtocolHelper->getIdentityTicket($token->getToken(), $token->getSecret());  | 
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| 241 | }  | 
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| 242 |         catch (Exception $ex) { | 
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| 243 |             if (strpos($ex->getMessage(), "mwoauthdatastore-access-token-not-found") !== false) { | 
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| 244 |                 throw new OAuthException('No approved grants for this access token.', -1, $ex); | 
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| 245 | }  | 
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| 246 | |||
| 247 | throw $ex;  | 
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| 248 | }  | 
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| 249 | |||
| 250 | $this->identity->populate($rawTicket);  | 
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| 251 | |||
| 252 |         if (!$this->identityIsValid()) { | 
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| 253 |             throw new OAuthException('Identity ticket is not valid!'); | 
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| 254 | }  | 
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| 255 | |||
| 256 | $this->identity->save();  | 
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| 257 | |||
| 258 | $this->user->setOnWikiName($this->identity->getUsername());  | 
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| 259 | $this->user->save();  | 
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| 260 | }  | 
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| 261 | |||
| 262 | /**  | 
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| 263 | * @return string  | 
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| 264 | * @throws CurlException  | 
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| 265 | */  | 
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| 266 | public function getRequestToken()  | 
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| 267 |     { | 
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| 268 | $token = $this->oauthProtocolHelper->getRequestToken();  | 
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| 269 | |||
| 270 | $this->partiallyLinked = true;  | 
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| 271 | $this->linked = false;  | 
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| 272 | |||
| 273 | $this->database  | 
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| 274 |             ->prepare('DELETE FROM oauthtoken WHERE user = :user AND type = :type') | 
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| 275 |             ->execute(array(':user' => $this->user->getId(), ':type' => self::TOKEN_REQUEST)); | 
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| 276 | |||
| 277 | $this->database  | 
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| 278 |             ->prepare('INSERT INTO oauthtoken (user, type, token, secret, expiry) VALUES (:user, :type, :token, :secret, DATE_ADD(NOW(), INTERVAL 1 DAY))') | 
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| 279 | ->execute(array(  | 
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| 280 | ':user' => $this->user->getId(),  | 
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| 281 | ':type' => self::TOKEN_REQUEST,  | 
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| 282 | ':token' => $token->key,  | 
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| 283 | ':secret' => $token->secret,  | 
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| 284 | ));  | 
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| 285 | |||
| 286 | return $this->oauthProtocolHelper->getAuthoriseUrl($token->key);  | 
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| 287 | }  | 
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| 288 | |||
| 289 | /**  | 
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| 290 | * @param $verificationToken  | 
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| 291 | *  | 
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| 292 | * @throws ApplicationLogicException  | 
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| 293 | * @throws CurlException  | 
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| 294 | * @throws OAuthException  | 
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| 295 | * @throws OptimisticLockFailedException  | 
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| 296 | */  | 
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| 297 | public function completeHandshake($verificationToken)  | 
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| 327 | }  | 
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| 328 | |||
| 329 | public function detach()  | 
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| 330 |     { | 
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| 331 | $this->loadIdentity();  | 
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| 332 | |||
| 333 | $this->identity->delete();  | 
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| 334 |         $statement = $this->database->prepare('DELETE FROM oauthtoken WHERE user = :user'); | 
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| 335 |         $statement->execute(array(':user' => $this->user->getId())); | 
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| 336 | |||
| 337 | $this->identity = null;  | 
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| 338 | $this->linked = false;  | 
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| 339 | $this->partiallyLinked = false;  | 
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| 340 | }  | 
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| 341 | |||
| 342 | /**  | 
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| 343 | * @param bool $expiredOk  | 
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| 344 | *  | 
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| 345 | * @return OAuthIdentity  | 
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| 346 | * @throws OAuthException  | 
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| 347 | */  | 
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| 348 | public function getIdentity($expiredOk = false)  | 
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| 349 |     { | 
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| 350 | $this->loadIdentity();  | 
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| 351 | |||
| 352 |         if (!$this->identityIsValid($expiredOk)) { | 
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| 353 |             throw new OAuthException('Stored identity is not valid.'); | 
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| 354 | }  | 
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| 355 | |||
| 356 | return $this->identity;  | 
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| 357 | }  | 
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| 358 | |||
| 359 | public function doApiCall($params, $method)  | 
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| 360 |     { | 
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| 361 | // Ensure we're logged in  | 
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| 362 | $params['assert'] = 'user';  | 
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| 363 | |||
| 364 | $token = $this->loadAccessToken();  | 
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| 365 | return $this->oauthProtocolHelper->apiCall($params, $token->getToken(), $token->getSecret(), $method);  | 
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| 366 | }  | 
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| 367 | |||
| 368 | /**  | 
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| 369 | * @param bool $expiredOk  | 
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| 370 | *  | 
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| 371 | * @return bool  | 
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| 372 | */  | 
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| 373 | private function identityIsValid($expiredOk = false)  | 
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| 419 | }  | 
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| 420 | |||
| 421 | /**  | 
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| 422 | * @return bool  | 
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| 423 | */  | 
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| 424 | public function identityExpired()  | 
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| 425 |     { | 
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| 426 | // allowed max age  | 
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| 427 | $gracePeriod = $this->siteConfiguration->getOauthIdentityGraceTime();  | 
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| 428 | |||
| 429 |         $expiry = DateTimeImmutable::createFromFormat("U", $this->identity->getExpirationTime()); | 
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| 430 | $graceExpiry = $expiry->modify($gracePeriod);  | 
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| 431 | $now = new DateTimeImmutable();  | 
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| 432 | |||
| 433 | return $graceExpiry < $now;  | 
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| 434 | }  | 
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| 435 | |||
| 436 | /**  | 
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| 437 | * Loads the OAuth identity from the database for the current user.  | 
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| 438 | */  | 
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| 439 | private function loadIdentity()  | 
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| 461 | }  | 
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| 462 | |||
| 463 | /**  | 
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| 464 | * @return OAuthToken  | 
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| 465 | * @throws OAuthException  | 
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| 466 | */  | 
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| 467 | private function loadAccessToken()  | 
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| 484 | }  | 
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| 485 | }  | 
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| 486 |