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<?php |
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use Larabros\Elogram\Client; |
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class InstagramAccount extends DataObject |
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{ |
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/** |
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* @config |
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* @var string |
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*/ |
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private static $client_id; |
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/** |
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* @config |
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* @var string |
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*/ |
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private static $client_secret; |
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/** |
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* @config |
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* @var string |
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*/ |
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private static $redirect_path; |
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/** |
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* @config |
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*/ |
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private static $items_per_page = 9; |
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/** |
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* @var array |
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*/ |
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private static $db = [ |
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'Title' => 'Varchar', |
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'AccessToken' => 'Text', |
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]; |
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/** |
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* @return FieldList |
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*/ |
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public function getCMSFields() |
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{ |
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$fields = parent::getCMSFields(); |
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$fields->removeByName('AccessToken'); |
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if ($this->AccessToken) { |
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$token = json_decode($this->AccessToken); |
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$usernameField = LiteralField::create( |
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'Title', |
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'<div class="field">' . |
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'<label class="left">' . |
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_t('Instagram.FieldLabelTitle', 'Username') . |
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'</label>' . |
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'<div class="middleColumn" style="padding-top:8px;">' . |
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'<a ' . |
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"href='https://www.instagram.com/{$token->user->username}' " . |
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'title="View on Instagram" ' . |
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'target="_blank">' . |
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$token->user->username . |
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'</a>' . |
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'</div>' . |
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'</div>' |
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); |
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} else { |
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$usernameField = Textfield::create('Title', _t('Instagram.FieldLabelTitle', 'Username')); |
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$usernameField->setDescription( |
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_t( |
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'Instagram.FieldDescriptionTitle', |
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'The Instagram account you want to pull media from.' |
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) |
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); |
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} |
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$fields->addFieldToTab('Root.Main', $usernameField); |
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$this->extend('updateCMSFields', $fields); |
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return $fields; |
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} |
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/** |
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* @return FieldList |
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*/ |
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public function getCMSActions() |
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{ |
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$actions = parent::getCMSActions(); |
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if (!$this->ID || $this->AccessToken) { |
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$this->extend('updateCMSActions', $actions); |
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return $actions; |
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} |
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$client = self::getNewInstagramClient(); |
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$loginURL = $client->getLoginUrl(); |
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$this->setSessionOAuthState($this->getOAuthStateValueFromLoginURL($loginURL)); |
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$actions->push( |
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LiteralField::create( |
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'OAuthLink', |
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'<a class="ss-ui-button" href="' . $loginURL . '">' . |
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_t('Instagram.ButtonLabelAuthoriseAccount', 'Authorise account') . |
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'</a>' |
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) |
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); |
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$this->extend('updateCMSActions', $actions); |
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return $actions; |
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} |
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/** |
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* @return RequiredFields |
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*/ |
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public function getCMSValidator() |
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{ |
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return new RequiredFields('Title'); |
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} |
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/** |
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* Ensures the person to authorising the account is logged into Instagram as the correct user |
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* before setting the token. |
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* |
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* For example if the user is logged into Instagram as 'FooUser' and they attempt to set a token |
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* for the InstagramAccount record 'InstagramAccount', the token will contain data relating to |
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* the 'FooUser' account. So if this happen we display a message telling the user they need to |
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* log out of Instagram before they can authorise another account. |
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* |
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* @param string $token |
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*/ |
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public function updateAccessToken($token, $state) |
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{ |
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$newToken = json_decode($token); |
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if ($state !== $this->getSessionOAuthState() || |
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$newToken->user->username !== $this->getField('Title')) { |
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throw new Exception('Trying to set token on wrong InstagramAccount'); |
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} |
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if (!$currentToken = $this->getField('AccessToken')) { |
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$this->setField('AccessToken', $token); |
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return; |
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} |
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1 |
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$currentToken = json_decode($currentToken); |
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if ($newToken->user->id !== $currentToken->user->id) { |
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throw new Exception('Trying to set token on wrong InstagramAccount'); |
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} |
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$this->setField('AccessToken', $token); |
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} |
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/** |
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* Create a configured Instagram API interface. |
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* |
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* @param string $token |
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* @return MetzWeb\Instagram\Instagram |
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*/ |
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public static function getNewInstagramClient($token = null) |
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{ |
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$client_id = Config::inst()->get('InstagramAccount', 'client_id'); |
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$client_secret = Config::inst()->get('InstagramAccount', 'client_secret'); |
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$redirect_path = Config::inst()->get('InstagramAccount', 'redirect_path'); |
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if (!$client_id) { |
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user_error( |
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'Add a client_id to config (InstagramAdmin::client_id)', |
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E_USER_ERROR |
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); |
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} |
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if (!$client_secret) { |
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user_error( |
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'Add a client_secret to config (InstagramAdmin::client_secret)', |
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E_USER_ERROR |
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); |
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} |
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return new Client( |
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$client_id, |
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$client_secret, |
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$token, |
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Director::absoluteBaseURL() . $redirect_path |
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); |
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} |
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/** |
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* Gets the 'state' value from an OAuth login URL. |
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* |
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* @param string $loginURL |
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* @return string|null |
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*/ |
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public function getOAuthStateValueFromLoginURL($loginURL = null) |
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{ |
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if (!$loginURL) { |
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1 |
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return null; |
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} |
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$parts = parse_url($loginURL); |
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parse_str($parts['query'], $query); |
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return array_key_exists('state', $query) |
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? $query['state'] |
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: null; |
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} |
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/** |
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* Gets the InstsgramAccount's OAuth state from Session. |
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* |
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* @return string|null |
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*/ |
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public function getSessionOAuthState() |
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{ |
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$instagramAccounts = Session::get('InstagramAccounts'); |
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if (!$this->ID || !$instagramAccounts || !array_key_exists($this->ID, $instagramAccounts)) { |
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return null; |
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} |
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return $instagramAccounts[$this->ID]; |
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} |
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/** |
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* Gets the authorised user's Instagram ID from the AccessToken. |
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* |
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* @return string|null |
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*/ |
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public function getInstagramID() |
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{ |
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if (!$token = $this->getField('AccessToken')) { |
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return null; |
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} |
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return json_decode($token)->user->id; |
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} |
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/** |
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* Checks if the passed ID is a valid pattern. |
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* |
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* @param string $mediaID |
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* @return boolean |
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*/ |
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public function isValidMediaID($mediaID = null) |
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{ |
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if (!$mediaID || !$instagramID = $this->getInstagramID()) { |
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return false; |
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} |
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$pattern = '/^(\d{18}|\d{19})_' . $instagramID . '$/'; |
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return preg_match($pattern, $mediaID) === 1; |
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} |
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/** |
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* Sets a Session variable which is used to keep track of |
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* the InstagramAccount through the OAuth flow. |
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* |
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* @param string $state |
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*/ |
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private function setSessionOAuthState($state = null) |
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{ |
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if (!$this->ID || !$state) { |
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return null; |
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} |
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$instagramAccounts = Session::get('InstagramAccounts'); |
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$instagramAccounts = $instagramAccounts ? $instagramAccounts : []; |
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$instagramAccounts[$this->ID] = $state; |
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Session::set('InstagramAccounts', $instagramAccounts); |
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} |
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/** |
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* Gets a list of media from the user's Instagram. |
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* |
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* @param string $maxID Return media earlier than this ID |
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* @return Larabros\Elogram\Http\Response|null |
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*/ |
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public function getMedia($maxID = null) |
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{ |
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if ( |
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!is_string($this->getField('AccessToken')) || |
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($maxID && !$this->isValidMediaID($maxID)) |
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) { |
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return null; |
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} |
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$client = $this->getNewInstagramClient($this->getField('AccessToken')); |
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$client->secureRequests(); |
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return $client->users()->getMedia('self', $this->config()->items_per_page, null, $maxID); |
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} |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.