/**
* Delete plugin specific information.
*
* @param stdClass $instance
* @return void
*/
public function delete_instance($instance)
{
global $DB;
// Get the tool associated with this instance.
$tool = $DB->get_record('enrol_lti_tools', array('enrolid' => $instance->id), 'id', MUST_EXIST);
// Delete any users associated with this tool.
$DB->delete_records('enrol_lti_users', array('toolid' => $tool->id));
// Get tool and consumer mappings.
$rsmapping = $DB->get_recordset('enrol_lti_tool_consumer_map', array('toolid' => $tool->id));
// Delete consumers that are linked to this tool and their related data.
$dataconnector = new data_connector();
foreach ($rsmapping as $mapping) {
$consumer = new ToolConsumer(null, $dataconnector);
$consumer->setRecordId($mapping->consumerid);
$dataconnector->deleteToolConsumer($consumer);
}
$rsmapping->close();
// Delete mapping records.
$DB->delete_records('enrol_lti_tool_consumer_map', array('toolid' => $tool->id));
// Delete the lti tool record.
$DB->delete_records('enrol_lti_tools', array('id' => $tool->id));
// Time for the parent to do it's thang, yeow.
parent::delete_instance($instance);
}
/**
* Test for data_connector::deleteToolConsumer().
*/
public function test_delete_tool_consumer()
{
$dc = new data_connector();
$data = ['name' => 'TestName', 'secret' => 'TestSecret', 'ltiversion' => ToolProvider::LTI_VERSION1];
$consumer = new ToolConsumer(null, $dc);
$consumer->name = $data['name'];
$consumer->setKey('TestKey');
$consumer->secret = $data['secret'];
$consumer->save();
$nonce = new ConsumerNonce($consumer, 'testnonce');
$nonce->save();
$context = Context::fromConsumer($consumer, 'testlticontext');
$context->save();
$resourcelink = ResourceLink::fromConsumer($consumer, 'testresourcelinkid');
$resourcelink->setContextId($context->getRecordId());
$resourcelink->save();
$this->assertEquals($consumer->getRecordId(), $resourcelink->getConsumer()->getRecordId());
$resourcelinkchild = ResourceLink::fromConsumer($consumer, 'testresourcelinkchildid');
$resourcelinkchild->primaryResourceLinkId = $resourcelink->getRecordId();
$resourcelinkchild->shareApproved = true;
$resourcelinkchild->setContextId($context->getRecordId());
$resourcelinkchild->save();
$this->assertEquals($consumer->getRecordId(), $resourcelinkchild->getConsumer()->getRecordId());
$this->assertEquals($resourcelink->getRecordId(), $resourcelinkchild->primaryResourceLinkId);
$this->assertTrue($resourcelinkchild->shareApproved);
$resourcelinkchild2 = clone $resourcelink;
$resourcelinkchild2->setRecordId(null);
$resourcelinkchild2->setConsumerId(null);
$resourcelinkchild2->setContextId(0);
$resourcelinkchild2->primaryResourceLinkId = $resourcelink->getRecordId();
$resourcelinkchild2->shareApproved = true;
$resourcelinkchild2->save();
$this->assertNull($resourcelinkchild2->getConsumer()->getRecordId());
$this->assertEquals(0, $resourcelinkchild2->getContextId());
$this->assertNotEquals($resourcelink->getRecordId(), $resourcelinkchild2->getRecordId());
$resourcelinksharekey = new ResourceLinkShareKey($resourcelink);
$resourcelinksharekey->save();
$user = User::fromResourceLink($resourcelink, '');
$user->ltiResultSourcedId = 'testLtiResultSourcedId';
$dc->saveUser($user);
// Confirm that tool consumer deletion processing ends successfully.
$this->assertTrue($dc->deleteToolConsumer($consumer));
// Consumer object should have been initialised.
foreach ($consumer as $key => $value) {
$this->assertTrue(empty($value));
}
// Nonce record should have been deleted.
$this->assertFalse($dc->loadConsumerNonce($nonce));
// Share key record record should have been deleted.
$this->assertFalse($dc->loadResourceLinkShareKey($resourcelinksharekey));
// Resource record link should have been deleted.
$this->assertFalse($dc->loadResourceLink($resourcelink));
// Consumer record should have been deleted.
$this->assertFalse($dc->loadToolConsumer($consumer));
// Resource links for contexts in this consumer should have been deleted. Even child ones.
$this->assertFalse($dc->loadResourceLink($resourcelinkchild));
// Child resource link primaryResourceLinkId and shareApproved attributes should have been set to null.
$this->assertTrue($dc->loadResourceLink($resourcelinkchild2));
$this->assertNull($resourcelinkchild2->primaryResourceLinkId);
$this->assertNull($resourcelinkchild2->shareApproved);
}
