class EntityAutocompleteTest

class EntityAutocompleteTest extends EntityKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'entity_reference_test',
    ];
    
    /**
     * The entity type used in this test.
     *
     * @var string
     */
    protected $entityType = 'entity_test';
    
    /**
     * The bundle used in this test.
     *
     * @var string
     */
    protected $bundle = 'entity_test';
    
    /**
     * Tests autocompletion edge cases with slashes in the names.
     */
    public function testEntityReferenceAutocompletion() : void {
        // Add an entity with a slash in its name.
        $entity_1 = $this->container
            ->get('entity_type.manager')
            ->getStorage($this->entityType)
            ->create([
            'name' => '10/16/2011',
        ]);
        $entity_1->save();
        // Add another entity that differs after the slash character.
        $entity_2 = $this->container
            ->get('entity_type.manager')
            ->getStorage($this->entityType)
            ->create([
            'name' => '10/17/2011',
        ]);
        $entity_2->save();
        // Add another entity that has both a comma, a slash and markup.
        $entity_3 = $this->container
            ->get('entity_type.manager')
            ->getStorage($this->entityType)
            ->create([
            'name' => 'label with, and / test',
        ]);
        $entity_3->save();
        // Try to autocomplete an entity label that matches both entities.
        // We should get both entities in a JSON encoded string.
        $input = '10/';
        $data = $this->getAutocompleteResult($input);
        $this->assertSame(Html::escape($entity_1->name->value), $data[0]['label'], 'Autocomplete returned the first matching entity');
        $this->assertSame(Html::escape($entity_2->name->value), $data[1]['label'], 'Autocomplete returned the second matching entity');
        // Try to autocomplete an entity label that matches the first entity.
        // We should only get the first entity in a JSON encoded string.
        $input = '10/16';
        $data = $this->getAutocompleteResult($input);
        $target = [
            'value' => $entity_1->name->value . ' (1)',
            'label' => Html::escape($entity_1->name->value),
        ];
        $this->assertSame($target, reset($data), 'Autocomplete returns only the expected matching entity.');
        // Pass the first entity to the request.
        // We should get empty results.
        // First we need to have permission to pass entity.
        $user = $this->drupalCreateUser([
            'administer entity_test content',
        ]);
        $this->drupalSetCurrentUser($user);
        $data = $this->getAutocompleteResult($input, $entity_1->id());
        $this->assertSame([], $data, 'Autocomplete returns empty results as first entity is passed to autocomplete request.');
        // Try to autocomplete an entity label that matches the second entity, and
        // the first entity  is already typed in the autocomplete (tags) widget.
        $input = $entity_1->name->value . ' (1), 10/17';
        $data = $this->getAutocompleteResult($input);
        $this->assertSame(Html::escape($entity_2->name->value), $data[0]['label'], 'Autocomplete returned the second matching entity');
        // Try to autocomplete an entity label with both comma, slash and markup.
        $input = '"label with, and /"';
        $data = $this->getAutocompleteResult($input);
        $n = $entity_3->name->value . ' (3)';
        // Entity labels containing commas or quotes must be wrapped in quotes.
        $n = Tags::encode($n);
        $target = [
            'value' => $n,
            'label' => Html::escape($entity_3->name->value),
        ];
        $this->assertSame($target, reset($data), 'Autocomplete returns an entity label containing a comma and a slash.');
        // Test empty input.
        foreach ([
            '',
            NULL,
            FALSE,
            0,
            0.0,
        ] as $input) {
            $data = $this->getAutocompleteResult($input);
            $this->assertSame([], $data, 'Autocomplete of empty input returns empty result');
        }
        $input = ',';
        $data = $this->getAutocompleteResult($input);
        $this->assertSame(Html::escape($entity_1->name->value), $data[0]['label'], 'Autocomplete returned the first matching entity');
        $this->assertSame(Html::escape($entity_2->name->value), $data[1]['label'], 'Autocomplete returned the second matching entity');
        $this->assertSame(Html::escape($entity_3->name->value), $data[2]['label'], 'Autocomplete returned the third matching entity');
        // Pass the first entity to the request.
        // We should not get the first entity in the results.
        $data = $this->getAutocompleteResult($input, $entity_1->id());
        $this->assertCount(2, $data, 'Autocomplete returned only 2 entities');
        $this->assertSame(Html::escape($entity_2->name->value), $data[0]['label'], 'Autocomplete returned the second matching entity');
        $this->assertSame(Html::escape($entity_3->name->value), $data[1]['label'], 'Autocomplete returned the third matching entity');
        // Strange input that is mangled by
        // \Drupal\Component\Utility\Tags::explode().
        $input = '"l!J>&Tw';
        $data = $this->getAutocompleteResult($input);
        $this->assertSame(Html::escape($entity_1->name->value), $data[0]['label'], 'Autocomplete returned the first matching entity');
        $this->assertSame(Html::escape($entity_2->name->value), $data[1]['label'], 'Autocomplete returned the second matching entity');
        $this->assertSame(Html::escape($entity_3->name->value), $data[2]['label'], 'Autocomplete returned the third matching entity');
        // Try to autocomplete an entity label with the '0' character.
        $input = '0';
        $data = $this->getAutocompleteResult($input);
        $this->assertSame(Html::escape($entity_1->name->value), $data[0]['label'], 'Autocomplete returned the first matching entity');
        $this->assertSame(Html::escape($entity_2->name->value), $data[1]['label'], 'Autocomplete returned the second matching entity');
    }
    
    /**
     * Tests that missing or invalid selection setting key are handled correctly.
     */
    public function testSelectionSettingsHandling() : void {
        $entity_reference_controller = EntityAutocompleteController::create($this->container);
        $request = Request::create('entity_reference_autocomplete/' . $this->entityType . '/default');
        $request->query
            ->set('q', $this->randomString());
        try {
            // Pass an invalid selection settings key (i.e. one that does not exist
            // in the key/value store).
            $selection_settings_key = $this->randomString();
            $entity_reference_controller->handleAutocomplete($request, $this->entityType, 'default', $selection_settings_key);
            $this->fail('Non-existent selection settings key throws an exception.');
        } catch (AccessDeniedHttpException $e) {
            // Expected exception; just continue testing.
        }
        try {
            // Generate a valid hash key but store a modified settings array.
            $selection_settings = [];
            $selection_settings_key = Crypt::hmacBase64(serialize($selection_settings) . $this->entityType . 'default', Settings::getHashSalt());
            $selection_settings[$this->randomMachineName()] = $this->randomString();
            \Drupal::keyValue('entity_autocomplete')->set($selection_settings_key, $selection_settings);
            $entity_reference_controller->handleAutocomplete($request, $this->entityType, 'default', $selection_settings_key);
        } catch (AccessDeniedHttpException $e) {
            $this->assertSame('Invalid selection settings key.', $e->getMessage());
        }
    }
    
    /**
     * Returns the result of an Entity reference autocomplete request.
     *
     * @param string $input
     *   The label of the entity to query by.
     * @param int $entity_id
     *   The label of the entity to query by.
     *
     * @return mixed
     *   The JSON value encoded in its appropriate PHP type.
     */
    protected function getAutocompleteResult($input, $entity_id = NULL) {
        // Use "entity_test_all_except_host" EntityReferenceSelection
        // to also test passing an entity to autocomplete requests.
        $request = Request::create('entity_reference_autocomplete/' . $this->entityType . '/entity_test_all_except_host');
        $request->query
            ->set('q', $input);
        $selection_settings = [];
        if ($entity_id) {
            $request->query
                ->set('entity_type', $this->entityType);
            $request->query
                ->set('entity_id', $entity_id);
        }
        $selection_settings_key = Crypt::hmacBase64(serialize($selection_settings) . $this->entityType . 'entity_test_all_except_host', Settings::getHashSalt());
        \Drupal::keyValue('entity_autocomplete')->set($selection_settings_key, $selection_settings);
        $entity_reference_controller = EntityAutocompleteController::create($this->container);
        $result = $entity_reference_controller->handleAutocomplete($request, $this->entityType, 'entity_test_all_except_host', $selection_settings_key)
            ->getContent();
        return Json::decode($result);
    }

}