facebook massenger module

modules/facebook_mcc/LICENSE.txt

+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+Public License instead of this License.

modules/facebook_mcc/README.txt

+# INTRODUCTION
+Facebook Messenger Customer Chat Plugin For Drupal.
+
+A simple module that provides the ability to add
+Facebook Messenger Customer Chat Pluginto your Drupal site.
+
+For More Information about the plugin:
+https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin
+
+# REQUIREMENTS
+  1. Whitelist the domain of your website
+    For security reasons, the plugin will only render when loaded on a
+    domain that you have whitelisted.
+    As Facebook states, your domain must be served over HTTPS,
+    and Uses a fully qualified domain name,
+    such as https://www.messenger.com/.
+    IP addresses and localhost are not supported for whitelisting.
+    To whitelist your domain:
+      - Go to your Facebook page
+      - Click Settings at the top of your Page
+      - Click Messenger Platform on the left
+      - Edit whitelisted domains for your page in the
+        Whitelisted Domains section
+
+  2. Create Facebook App
+    You will need to create a Facebook app to be able to get an App ID.
+    This will serve as an API Key for Facebook so you can access their services.
+    Go to https://developers.facebook.com to get one.
+
+
+# INSTALLATION
+  Open your terminal and download with composer.
+  composer require drupal/facebook_mcc
+
+  OR
+
+  1. Download the module to your DRUPAL_ROOT/modules directory,
+     or where ever you install contrib modules on your site.
+  2. Go to Admin > Extend and enable the module.
+
+# CONFIGURATION
+  1. Go to admin/config/services/facebook_mcc
+  2. Set your Page ID & App ID and save the configurations
+  3. Place the Facebook MCC Block in your block layout
+
+# AUTHOR
+Yasser Samman
+https://jo.linkedin.com/in/yasseralsamman
+y.samman@codersme.com

modules/facebook_mcc/config/install/facebook_mcc.settings.yml

+facebook_mcc_page_id: ''
+facebook_mcc_app_id: ''
+facebook_mcc_sdk_version: ''
+facebook_mcc_theme_color: ''
+facebook_mcc_logged_in_greeting: ''
+facebook_mcc_logged_out_greeting: ''
+facebook_mcc_greeting_dialog_display: ''
+facebook_mcc_greeting_dialog_delay: ''
+facebook_mcc_language_mapping: ''

modules/facebook_mcc/config/schema/facebook_mcc.schema.yml

+facebook_mcc.settings:
+  type: config_object
+  translateble: true
+  mapping:
+    facebook_mcc_page_id:
+      type: string
+      label: 'Facebook Page ID'
+    facebook_mcc_app_id:
+      type: string
+      label: 'Facebook App ID'
+    facebook_mcc_sdk_version:
+      type: string
+      label: 'Facebook SDK Version'
+    facebook_mcc_theme_color:
+      type: string
+      label: 'Theme Color'
+    facebook_mcc_logged_in_greeting:
+      type: text
+      label: 'Logged In Greeting'
+    facebook_mcc_logged_out_greeting:
+      type: text
+      label: 'Logged Out Greeting'
+    facebook_mcc_greeting_dialog_display:
+      type: string
+      label: 'Greeting Dialog Display'
+    facebook_mcc_greeting_dialog_delay:
+      type: string
+      label: 'Greeting Dialog Delay'
+    facebook_mcc_language_mapping:
+      type: sequence
+      label: 'Language Mapping'

modules/facebook_mcc/facebook_mcc.config_translation.yml

+facebook_mcc.settings:
+  title: 'Facebook MCC Settings'
+  base_route_name: facebook_mcc.config_form
+  names:
+    - facebook_mcc.settings

modules/facebook_mcc/facebook_mcc.info.yml

+name: Facebook Messenger Customer Chat
+description: Facebook Messenger Customer Chat Plugin For Drupal.
+package: Web services
+configure: facebook_mcc.config_form
+type: module
+core: 8.x
+core_version_requirement: ^8 || ^9
+# Information added by Drupal.org packaging script on 2020-03-16
+version: '8.x-1.4'
+project: 'facebook_mcc'
+datestamp: 1584388771

modules/facebook_mcc/facebook_mcc.libraries.yml

+facebook_mcc:
+  js:
+    js/facebook_mcc.js: {}
+  dependencies:
+  - core/drupal
+  - core/jquery
+  - core/drupalSettings

modules/facebook_mcc/facebook_mcc.links.menu.yml

+facebook_mcc.config_form:
+  title: 'Facebook MCC settings'
+  description: 'Configure settings for Facebook Messenger Customer Chat module.'
+  route_name: facebook_mcc.config_form
+  parent: 'system.admin_config_services'

modules/facebook_mcc/facebook_mcc.links.task.yml

+facebook_mcc.settings:
+  route_name: facebook_mcc.config_form
+  title: Settings
+  base_route: facebook_mcc.config_form

modules/facebook_mcc/facebook_mcc.module

+<?php
+
+/**
+ * @file
+ * Facebook_mcc module file.
+ */
+
+use Drupal\Core\Routing\RouteMatchInterface;
+
+/**
+ * Implements hook_help().
+ *
+ * {@inheritdoc}
+ */
+function facebook_mcc_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.facebook_mcc':
+      $text = file_get_contents(dirname(__FILE__) . "/README.txt");
+      if (!\Drupal::moduleHandler()->moduleExists('markdown')) {
+        return '<pre>' . $text . '</pre>';
+      }
+      else {
+        // Use the Markdown filter to render the README.
+        $filter_manager = \Drupal::service('plugin.manager.filter');
+        $settings = \Drupal::configFactory()->get('markdown.settings')->getRawData();
+        $config = ['settings' => $settings];
+        $filter = $filter_manager->createInstance('markdown', $config);
+        return $filter->process($text, 'en');
+      }
+  }
+  return NULL;
+
+}

modules/facebook_mcc/facebook_mcc.routing.yml

+facebook_mcc.config_form:
+  path: '/admin/config/services/facebook_mcc'
+  defaults:
+    _form: 'Drupal\facebook_mcc\Form\FacebookMCCForm'
+    _title: 'Facebook MCC settings'
+  requirements:
+    _permission: 'administer site configuration'

modules/facebook_mcc/js/facebook_mcc.js

+(function ($, Drupal) {
+  'use strict';
+  Drupal.behaviors.facebook_mcc = {
+    attach: function (context, settings) {
+
+      // SDK Source with localization.
+      var sdkSrc = 'https://connect.facebook.net/'+drupalSettings.facebook_mcc_locale+'/sdk/xfbml.customerchat.js';
+
+      // Block code to inject.
+      var code = '<div class="fb-customerchat" \
+        page_id="' + drupalSettings.facebook_mcc_page_id + '" \
+        theme_color="' + drupalSettings.facebook_mcc_theme_color + '" \
+        logged_in_greeting="' + drupalSettings.facebook_mcc_logged_in_greeting + '" \
+        logged_out_greeting="' + drupalSettings.facebook_mcc_logged_out_greeting + '" \
+        greeting_dialog_delay="' + drupalSettings.facebook_mcc_greeting_dialog_delay + '"';
+
+      // Check the mode of greeting display, if it's not default, then add it.
+      if(drupalSettings.facebook_mcc_greeting_dialog_display != 'default') {
+         code+= 'greeting_dialog_display="'+drupalSettings.facebook_mcc_greeting_dialog_display+'"';
+      }
+      code+='></div>';
+
+      // Script to initialize the SDK.
+      var script = '<script> \
+        window.fbAsyncInit=function(){ \
+          FB.init({ \
+            xfbml:!0, \
+            version:"v' + drupalSettings.facebook_mcc_sdk_version + '", \
+            appId:"' + drupalSettings.facebook_mcc_app_id + '" \
+          }) \
+        },function(e,t,n){ \
+          var c,o=e.getElementsByTagName(t)[0]; \
+          e.getElementById(n)||((c=e.createElement(t)).id=n,c.src="'+sdkSrc+'",o.parentNode.insertBefore(c,o)) \
+        }(document,"script","facebook-jssdk"); \
+        </script>';
+
+      // Inject code.
+      $(code).prependTo('body');
+      $(script).prependTo('body');
+      $('<div id="fb-root"></div>').prependTo('body');
+
+    }
+  };
+})(jQuery, Drupal);

modules/facebook_mcc/locale.json

+{
+  "en_US":"en_US",
+  "ca_ES":"ca_ES",
+  "cs_CZ":"cs_CZ",
+  "cx_PH":"cx_PH",
+  "cy_GB":"cy_GB",
+  "da_DK":"da_DK",
+  "de_DE":"de_DE",
+  "eu_ES":"eu_ES",
+  "en_UD":"en_UD",
+  "es_LA":"es_LA",
+  "es_ES":"es_ES",
+  "gn_PY":"gn_PY",
+  "fi_FI":"fi_FI",
+  "fr_FR":"fr_FR",
+  "gl_ES":"gl_ES",
+  "hu_HU":"hu_HU",
+  "it_IT":"it_IT",
+  "ja_JP":"ja_JP",
+  "ko_KR":"ko_KR",
+  "nb_NO":"nb_NO",
+  "nn_NO":"nn_NO",
+  "nl_NL":"nl_NL",
+  "fy_NL":"fy_NL",
+  "pl_PL":"pl_PL",
+  "pt_BR":"pt_BR",
+  "pt_PT":"pt_PT",
+  "ro_RO":"ro_RO",
+  "ru_RU":"ru_RU",
+  "sk_SK":"sk_SK",
+  "sl_SI":"sl_SI",
+  "sv_SE":"sv_SE",
+  "th_TH":"th_TH",
+  "tr_TR":"tr_TR",
+  "ku_TR":"ku_TR",
+  "zh_CN":"zh_CN",
+  "zh_HK":"zh_HK",
+  "zh_TW":"zh_TW",
+  "af_ZA":"af_ZA",
+  "sq_AL":"sq_AL",
+  "hy_AM":"hy_AM",
+  "az_AZ":"az_AZ",
+  "be_BY":"be_BY",
+  "bn_IN":"bn_IN",
+  "bs_BA":"bs_BA",
+  "bg_BG":"bg_BG",
+  "hr_HR":"hr_HR",
+  "nl_BE":"nl_BE",
+  "en_GB":"en_GB",
+  "et_EE":"et_EE",
+  "fo_FO":"fo_FO",
+  "fr_CA":"fr_CA",
+  "ka_GE":"ka_GE",
+  "el_GR":"el_GR",
+  "gu_IN":"gu_IN",
+  "hi_IN":"hi_IN",
+  "is_IS":"is_IS",
+  "id_ID":"id_ID",
+  "ga_IE":"ga_IE",
+  "jv_ID":"jv_ID",
+  "kn_IN":"kn_IN",
+  "kk_KZ":"kk_KZ",
+  "lv_LV":"lv_LV",
+  "lt_LT":"lt_LT",
+  "mk_MK":"mk_MK",
+  "mg_MG":"mg_MG",
+  "ms_MY":"ms_MY",
+  "mt_MT":"mt_MT",
+  "mr_IN":"mr_IN",
+  "mn_MN":"mn_MN",
+  "ne_NP":"ne_NP",
+  "pa_IN":"pa_IN",
+  "sr_RS":"sr_RS",
+  "so_SO":"so_SO",
+  "sw_KE":"sw_KE",
+  "tl_PH":"tl_PH",
+  "ta_IN":"ta_IN",
+  "te_IN":"te_IN",
+  "ml_IN":"ml_IN",
+  "uk_UA":"uk_UA",
+  "uz_UZ":"uz_UZ",
+  "vi_VN":"vi_VN",
+  "km_KH":"km_KH",
+  "tg_TJ":"tg_TJ",
+  "ar_AR":"ar_AR",
+  "he_IL":"he_IL",
+  "ur_PK":"ur_PK",
+  "fa_IR":"fa_IR",
+  "ps_AF":"ps_AF",
+  "my_MM":"my_MM",
+  "qz_MM":"qz_MM",
+  "or_IN":"or_IN",
+  "si_LK":"si_LK",
+  "rw_RW":"rw_RW",
+  "cb_IQ":"cb_IQ",
+  "ha_NG":"ha_NG",
+  "ja_KS":"ja_KS",
+  "br_FR":"br_FR",
+  "tz_MA":"tz_MA",
+  "co_FR":"co_FR",
+  "as_IN":"as_IN",
+  "ff_NG":"ff_NG",
+  "sc_IT":"sc_IT",
+  "sz_PL":"sz_PL"
+}

modules/facebook_mcc/src/Form/FacebookMCCForm.php

+<?php
+
+namespace Drupal\facebook_mcc\Form;
+
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Component\Utility\Color;
+use Drupal\Component\Serialization\Json;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Implement config form for Facebook mcc.
+ */
+class FacebookMCCForm extends ConfigFormBase {
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * Creates a FacebookMCCForm object.
+   *
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   */
+  public function __construct(LanguageManagerInterface $language_manager) {
+    $this->languageManager = $language_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('language_manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'facebook_mcc_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    // Form constructor.
+    $form = parent::buildForm($form, $form_state);
+
+    // Default settings.
+    $config = $this->config('facebook_mcc.settings');
+
+    // Load localization list from JSON.
+    $local_list = $this->loadLocalList();
+
+    // Form vertical tabs.
+    $form['plugin_config_tab'] = [
+      '#type' => 'vertical_tabs',
+      '#title' => $this->t('Facebook MCC Settings'),
+    ];
+
+    // Form bases.
+    $form['plugin_config'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Plugin Configurations'),
+      '#group' => 'plugin_config_tab',
+    ];
+
+    $form['language_config'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Language Configurations'),
+      '#group' => 'plugin_config_tab',
+    ];
+
+    // Facebook Page ID Field.
+    $form['plugin_config']['facebook_mcc_page_id'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Facebook Page ID'),
+      '#default_value' => $config->get('facebook_mcc_page_id'),
+      '#description' => $this->t('Your Facebook page id'),
+      '#required' => TRUE,
+    ];
+
+    // Facebook App ID Field.
+    $form['plugin_config']['facebook_mcc_app_id'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Facebook App ID'),
+      '#default_value' => $config->get('facebook_mcc_app_id'),
+      '#description' => $this->t('Your Facebook app id'),
+      '#required' => TRUE,
+    ];
+
+    // Facebook SDK Version Field.
+    $form['plugin_config']['facebook_mcc_sdk_version'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Facebook JS SDK Version'),
+      '#default_value' => $config->get('facebook_mcc_sdk_version'),
+      '#description' => $this->t('Ex: 6.0. You can find the version here: https://developers.facebook.com/docs/javascript/quickstart'),
+      '#required' => TRUE,
+    ];
+
+    // Facebook MCC Theme Color Field.
+    $form['plugin_config']['facebook_mcc_theme_color'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Theme Color'),
+      '#default_value' => $config->get('facebook_mcc_theme_color'),
+      '#description' => $this->t('The color to use as a theme for the plugin. Ex: #3B5998'),
+    ];
+
+    // Facebook MCC Logged In Greeting Field.
+    $form['plugin_config']['facebook_mcc_logged_in_greeting'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Logged In Greeting'),
+      '#rows' => 2,
+      '#resizable' => 'none',
+      '#maxlength' => 80,
+      '#default_value' => $config->get('facebook_mcc_logged_in_greeting'),
+      '#description' => $this->t('The greeting text that will be displayed if the user is currently logged in to Facebook. Maximum 80 characters.'),
+    ];
+
+    // Facebook MCC Logged Out Greeting Field.
+    $form['plugin_config']['facebook_mcc_logged_out_greeting'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Logged Out Greeting'),
+      '#rows' => 2,
+      '#resizable' => 'none',
+      '#maxlength' => 80,
+      '#default_value' => $config->get('facebook_mcc_logged_out_greeting'),
+      '#description' => $this->t('The greeting text that will be displayed if the user is currently not logged in to Facebook. Maximum 80 characters.'),
+    ];
+
+    // Facebook MCC Greeting Dialog Display Field.
+    $form['plugin_config']['facebook_mcc_greeting_dialog_display'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Greeting Dialog Display'),
+      '#options' => [
+        'default' => $this->t('Default'),
+        'show' => $this->t('Show'),
+        'hide' => $this->t('Hide'),
+        'fade' => $this->t('Fade'),
+      ],
+      '#default_value' => $config->get('facebook_mcc_greeting_dialog_display'),
+      '#description' => $this->t('Sets how the greeting dialog will be displayed.
+                                  Default: show on desktop, hide on mobile.
+                                  Show: The greeting dialog will always be shown when the plugin loads.
+                                  Hide: The greeting dialog of the plugin will always be hidden until a user clicks on the plugin.
+                                  Fade: The greeting dialog of the plugin will be shown, then fade away and stay hidden afterwards.
+                                  '),
+
+    ];
+
+    // Facebook MCC Logged Out Greeting Field.
+    $form['plugin_config']['facebook_mcc_greeting_dialog_delay'] = [
+      '#type' => 'number',
+      '#title' => $this->t('Greeting Dialog Delay'),
+      '#min' => 1,
+      '#default_value' => $config->get('facebook_mcc_greeting_dialog_delay'),
+      '#description' => $this->t('Sets the number of seconds of delay before the greeting dialog is shown after the plugin is loaded.'),
+    ];
+
+    // Facebook MCC Language Localization Settings Table.
+    $form['language_config']['facebook_mcc_language_map'] = [
+      '#type' => 'table',
+      '#header' => [
+        $this->t('Site Language'),
+        $this->t('Plugin Display Language'),
+      ],
+      '#empty' => $this->t('There are no enabled languages.'),
+    ];
+
+    // Fill Languages table with enabled languages.
+    $language_list = $this->languageManager->getLanguages();
+    $language_map = $config->get('facebook_mcc_language_map');
+
+    foreach ($language_list as $language) {
+      $form['language_config']['facebook_mcc_language_map'][$language->getId()]['language'] = [
+        '#plain_text' => $language->getName(),
+      ];
+      $form['language_config']['facebook_mcc_language_map'][$language->getId()]['localization'] = [
+        $form['language_config']['facebook_mcc_language_map']['local'] = [
+          '#type' => 'select',
+          '#options' => $local_list,
+          '#default_value' => (isset($language_map[$language->getId()])) ? $language_map[$language->getId()]['localization'] : 'en_US',
+        ],
+      ];
+    }
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    // Validate Theme Color Field.
+    $color = $form_state->getValue('facebook_mcc_theme_color');
+    if (!Color::validateHex($color) && strlen($color) != 0) {
+      $form_state->setErrorByName('facebook_mcc_theme_color', $this->t('Color must be a 6-digit hexadecimal value.'));
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $config = $this->config('facebook_mcc.settings');
+
+    $config->set('facebook_mcc_page_id', $form_state->getValue('facebook_mcc_page_id'));
+    $config->set('facebook_mcc_app_id', $form_state->getValue('facebook_mcc_app_id'));
+    $config->set('facebook_mcc_sdk_version', $form_state->getValue('facebook_mcc_sdk_version'));
+    $config->set('facebook_mcc_theme_color', $form_state->getValue('facebook_mcc_theme_color'));
+    $config->set('facebook_mcc_logged_in_greeting', $form_state->getValue('facebook_mcc_logged_in_greeting'));
+    $config->set('facebook_mcc_logged_out_greeting', $form_state->getValue('facebook_mcc_logged_out_greeting'));
+    $config->set('facebook_mcc_greeting_dialog_display', $form_state->getValue('facebook_mcc_greeting_dialog_display'));
+    $config->set('facebook_mcc_greeting_dialog_delay', $form_state->getValue('facebook_mcc_greeting_dialog_delay'));
+    $config->set('facebook_mcc_language_map', $form_state->getValue('facebook_mcc_language_map'));
+
+    $config->save();
+    return parent::submitForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEditableConfigNames() {
+    return [
+      'facebook_mcc.settings',
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  private function loadLocalList() {
+    return Json::decode(file_get_contents(__DIR__ . '/../../locale.json'));
+  }
+
+}

modules/facebook_mcc/src/Plugin/Block/FacebookMCCBlock.php

+<?php
+
+namespace Drupal\facebook_mcc\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides Facebook Messenger Customer Chat Block.
+ *
+ * @Block(
+ *   id = "facebook_mcc_block",
+ *   admin_label = @Translation("Facebook Messenger Customer Chat"),
+ *   category = @Translation("Facebook Messenger Customer Chat"),
+ * )
+ */
+class FacebookMCCBlock extends BlockBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * The configuration object.
+   *
+   * @var \Drupal\Core\Config\ImmutableConfig
+   */
+  protected $facebookMccConfig;
+
+  /**
+   * Creates a FacebookMCCBlock object.
+   *
+   * @param array $configuration
+   *   The plugin configuration, i.e. an array with configuration values keyed
+   *   by configuration option name. The special key ‘context’ may be used to
+   *   initialize the defined contexts by setting it to an array of context
+   *   values keyed by context names.
+   * @param string $plugin_id
+   *   The plugin_id for the formatter.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The config factory.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $config_factory, LanguageManagerInterface $language_manager) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->languageManager = $language_manager;
+    $this->facebookMccConfig = $config_factory->get('facebook_mcc.settings');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('config.factory'),
+      $container->get('language_manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    // Check site language and set plugin language accordingly.
+    $current_language = $this->languageManager->getCurrentLanguage();
+    $language_map = $this->facebookMccConfig->get('facebook_mcc_language_map');
+    if ($language_map && count($language_map) > 0) {
+      $plugin_locale = $language_map[$current_language->getId()]['localization'];
+    }
+    else {
+      $plugin_locale = 'en_US';
+    }
+
+    // Build block.
+    $facebook_mcc_rendered_block = [
+      '#attributes' => [
+        'class' => ['fb-customerchat-block'],
+      ],
+      '#attached' => [
+        'library' => [
+          'facebook_mcc/facebook_mcc',
+        ],
+        'drupalSettings' => [
+          'facebook_mcc_sdk_version' => $this->facebookMccConfig->get('facebook_mcc_sdk_version'),
+          'facebook_mcc_app_id' => $this->facebookMccConfig->get('facebook_mcc_app_id'),
+          'facebook_mcc_page_id' => $this->facebookMccConfig->get('facebook_mcc_page_id'),
+          'facebook_mcc_theme_color' => $this->facebookMccConfig->get('facebook_mcc_theme_color'),
+          'facebook_mcc_logged_in_greeting' => $this->facebookMccConfig->get('facebook_mcc_logged_in_greeting'),
+          'facebook_mcc_logged_out_greeting' => $this->facebookMccConfig->get('facebook_mcc_logged_out_greeting'),
+          'facebook_mcc_greeting_dialog_delay' => $this->facebookMccConfig->get('facebook_mcc_greeting_dialog_delay'),
+          'facebook_mcc_greeting_dialog_display' => $this->facebookMccConfig->get('facebook_mcc_greeting_dialog_display'),
+          'facebook_mcc_locale' => $plugin_locale,
+        ],
+      ],
+    ];
+
+    return $facebook_mcc_rendered_block;
+  }
+
+}