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Rev 1 Rev 1441
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global $CFG;
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global $CFG;
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require_once($CFG->libdir . '/filelib.php');
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require_once($CFG->libdir . '/filelib.php');
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use context_system;
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use core_badges\external\assertion_exporter;
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use core_badges\external\collection_exporter;
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use core_badges\external\issuer_exporter;
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use core_badges\external\badgeclass_exporter;
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use context_system;
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use curl;
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use curl;
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    private static $authenticationerror = '';
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    private static $authenticationerror = '';
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    /** @var mixed List of parameters for this method. */
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    /** @var mixed List of parameters for this method. */
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    protected $postparams;
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    protected $postparams;
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    /** @var int OpenBadges version. */
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    protected $backpackapiversion;
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    /** @var int OpenBadges version 1 or 2. */
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    /** @var array Errors encountered during the request. */
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    protected $backpackapiversion;
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    protected $errors = [];
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    /**
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    /**
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     * Create a mapping.
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     * Create a mapping.
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     * @param boolean $multiple This method returns an array of responses.
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     * @param boolean $multiple This method returns an array of responses.
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     * @param string $method get or post methods.
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     * @param string $method get or post methods.
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     * @param boolean $json json decode the response.
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     * @param boolean $json json decode the response.
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     * @param boolean $authrequired Authentication is required for this request.
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     * @param boolean $authrequired Authentication is required for this request.
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     * @param boolean $isuserbackpack user backpack or a site backpack.
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     * @param boolean $isuserbackpack user backpack or a site backpack.
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     * @param integer $backpackapiversion OpenBadges version 1 or 2.
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     * @param integer $backpackapiversion OpenBadges version.
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     */
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     */
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    public function __construct($action, $url, $postparams, $requestexporter, $responseexporter,
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    public function __construct($action, $url, $postparams, $requestexporter, $responseexporter,
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                                $multiple, $method, $json, $authrequired, $isuserbackpack, $backpackapiversion) {
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                                $multiple, $method, $json, $authrequired, $isuserbackpack, $backpackapiversion) {
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        $this->action = $action;
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        $this->action = $action;
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        $this->url = $url;
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        $this->url = $url;
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    public static function get_authentication_error() {
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    public static function get_authentication_error() {
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        return self::$authenticationerror;
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        return self::$authenticationerror;
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    }
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    }
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    /**
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     * Get the errors encountered during the request.
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     *
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     * @return array The list of errors.
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     */
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    public function get_errors() {
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        return $this->errors;
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    }
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    /**
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     * Add an error to the list of errors.
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     *
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     * @param string $error The error message.
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     * @return self This instance for method chaining.
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     */
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    public function add_error(string $error): self {
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        $this->errors[] = $error;
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        return $this;
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    }
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    /**
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    /**
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     * Does the action match this mapping?
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     * Does the action match this mapping?
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     *
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     *
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     * @param string $action The action.
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     * @param string $action The action.
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     * @return boolean
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     * @return boolean
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        }
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        }
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        return $request;
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        return $request;
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    }
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    }
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    /**
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     * Read the response from a V1 user request and save the userID.
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     *
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     * @param string $response The request response.
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     * @param integer $backpackid The backpack id.
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     * @return mixed
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     */
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    private function convert_email_response($response, $backpackid) {
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        global $SESSION;
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        if (isset($response->status) && $response->status == 'okay') {
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            // Remember the tokens.
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            $useridkey = $this->get_token_key(BADGE_USER_ID_TOKEN);
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            $backpackidkey = $this->get_token_key(BADGE_BACKPACK_ID_TOKEN);
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            $SESSION->$useridkey = $response->userId;
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            $SESSION->$backpackidkey = $backpackid;
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            return $response->userId;
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        }
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        if (!empty($response->error)) {
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            self::set_authentication_error($response->error);
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        }
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        return false;
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    }
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    /**
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    /**
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     * Get the user id from a previous user request.
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     * Get the user id from a previous user request.
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     *
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     *
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     * @return integer
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     * @return integer
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     */
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     */
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            $response = $curl->post($url, $post, $options);
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            $response = $curl->post($url, $post, $options);
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        } else if ($this->method == 'put') {
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        } else if ($this->method == 'put') {
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            $response = $curl->put($url, $post, $options);
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            $response = $curl->put($url, $post, $options);
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        }
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        }
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        $response = json_decode($response);
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        $response = json_decode($response);
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        if ($response === null) {
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            $this->add_error(get_string('invalidrequest', 'error'));
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            return null;
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        }
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        if (isset($response->status) && isset($response->status->success) && $response->status->success != true) {
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            // If the response wasn't successful, store the errors and return null.
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            if (isset($response->validationErrors)) {
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                $error = implode(', ', $response->validationErrors);
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            } else if (isset($response->status->description)) {
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                $error = $response->status->description;
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            } else {
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                $error = get_string('invalidrequest', 'error');
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            }
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            $this->add_error($error);
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            return null;
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        }
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        if (isset($response->result)) {
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        if (isset($response->result)) {
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            $response = $response->result;
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            $response = $response->result;
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        }
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        }
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        $context = context_system::instance();
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        $context = context_system::instance();
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        $exporter = $this->responseexporter;
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        $exporter = $this->responseexporter;