class JsMessageTest

class JsMessageTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'js_message_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Enable the theme.
        \Drupal::service('theme_installer')->install([
            'test_messages',
        ]);
        $theme_config = \Drupal::configFactory()->getEditable('system.theme');
        $theme_config->set('default', 'test_messages');
        $theme_config->save();
    }
    
    /**
     * Tests click on links to show messages and remove messages.
     */
    public function testAddRemoveMessages() : void {
        $web_assert = $this->assertSession();
        $this->drupalGet('js_message_test_link');
        $current_messages = [];
        foreach (JSMessageTestController::getMessagesSelectors() as $messagesSelector) {
            $web_assert->elementExists('css', $messagesSelector);
            foreach (JSMessageTestController::getTypes() as $type) {
                $this->click('[id="add-' . $messagesSelector . '-' . $type . '"]');
                $selector = "{$messagesSelector} .messages.messages--{$type}";
                $msg_element = $web_assert->waitForElementVisible('css', $selector);
                $this->assertNotEmpty($msg_element, "Message element visible: {$selector}");
                $web_assert->elementContains('css', $selector, "This is a message of the type, {$type}. You be the judge of its importance.");
                $current_messages[$selector] = "This is a message of the type, {$type}. You be the judge of its importance.";
                $this->assertCurrentMessages($current_messages, $messagesSelector);
            }
            // Remove messages 1 by 1 and confirm the messages are expected.
            foreach (JSMessageTestController::getTypes() as $type) {
                $this->click('[id="remove-' . $messagesSelector . '-' . $type . '"]');
                $selector = "{$messagesSelector} .messages.messages--{$type}";
                // The message for this selector should not be on the page.
                unset($current_messages[$selector]);
                $this->assertCurrentMessages($current_messages, $messagesSelector);
            }
        }
        $messagesSelector = JSMessageTestController::getMessagesSelectors()[0];
        $current_messages = [];
        $types = JSMessageTestController::getTypes();
        $nb_messages = count($types) * 2;
        for ($i = 0; $i < $nb_messages; $i++) {
            $current_messages[] = "This is message number {$i} of the type, {$types[$i % count($types)]}. You be the judge of its importance.";
        }
        // Test adding multiple messages at once.
        // @see processMessages()
        $this->click('[id="add-multiple"]');
        $this->assertCurrentMessages($current_messages, $messagesSelector);
        $this->click('[id="remove-multiple"]');
        $this->assertCurrentMessages([], $messagesSelector);
        $current_messages = [];
        for ($i = 0; $i < $nb_messages; $i++) {
            $current_messages[] = "Msg-{$i}";
        }
        // The last message is of a different type and shouldn't get cleared.
        $last_message = 'Msg-' . count($current_messages);
        $current_messages[] = $last_message;
        $this->click('[id="add-multiple-error"]');
        $this->assertCurrentMessages($current_messages, $messagesSelector);
        $this->click('[id="remove-type"]');
        $this->assertCurrentMessages([
            $last_message,
        ], $messagesSelector);
        $this->click('[id="clear-all"]');
        $this->assertCurrentMessages([], $messagesSelector);
        // Confirm that when adding a message with an "id" specified but no status
        // that it receives the default status.
        $this->click('[id="id-no-status"]');
        $no_status_msg = 'Msg-id-no-status';
        $this->assertCurrentMessages([
            $no_status_msg,
        ], $messagesSelector);
        $web_assert->elementTextContains('css', "{$messagesSelector} .messages--status[data-drupal-message-id=\"my-special-id\"]", $no_status_msg);
    }
    
    /**
     * Asserts that currently shown messages match expected messages.
     *
     * @param array $expected_messages
     *   Expected messages.
     * @param string $messagesSelector
     *   The css selector for the containing messages element.
     *
     * @internal
     */
    protected function assertCurrentMessages(array $expected_messages, string $messagesSelector) : void {
        $expected_messages = array_values($expected_messages);
        $current_messages = [];
        if ($message_divs = $this->getSession()
            ->getPage()
            ->findAll('css', "{$messagesSelector} .messages")) {
            foreach ($message_divs as $message_div) {
                
                /** @var \Behat\Mink\Element\NodeElement $message_div */
                $current_messages[] = $message_div->getText();
            }
        }
        // Check that each message text contains the expected text.
        if (count($expected_messages) !== count($current_messages)) {
            $this->fail('The expected messages array contains a different number of values than the current messages array.');
        }
        for ($i = 0; $i < count($expected_messages); $i++) {
            $this->assertStringContainsString($expected_messages[$i], $current_messages[$i]);
        }
    }

}