auto_load_location-1.0.0/auto_load_location.module

<?php

use Drupal\auto_load_location\Controller\Permission;
use Drupal\auto_load_location\Controller\Address;
use Drupal\Component\Serialization\Json;

/**
 * @file
 * Autoloading Address and Geolocation data from one to another content type.
 */

/**
 * Implements hook_preprocess_page().
 */
function auto_load_location_preprocess_page(&$variables) {
  // Check if a user has permission
  $permission = new Permission();
  $has_permission = $permission->getPermission();

  if ($has_permission) {
    $route_match = \Drupal::routeMatch();
    $route = $route_match->getRouteName();
    if ($route == 'node.add' ||
      $route == 'entity.node.edit_form') {
        // Add css/js library to node form page
        $variables['#attached']['library'][] = 'auto_load_location/auto_load_location_library';
        // Pass entity reference field name variable into drupalSettings
        $location_field_name = \Drupal::config('auto_load_location.settings')->get('entity_reference_field_name');
        $variables['#attached']['drupalSettings']['location_field_name'] = $location_field_name;
    }
  }
}

/**
 * Implements hook_form_alter().
 */
function auto_load_location_form_alter(&$form, &$form_state, $form_id) {
  $route_match = \Drupal::routeMatch();
  $route_name = $route_match->getRouteName();
  $node = $route_match->getParameter('node');

  // Enabled content types and field name
  $enabled_content_types = \Drupal::config('auto_load_location.settings')->get('enabled_content_types');
  $content_types = (!empty($enabled_content_types) ? array_filter($enabled_content_types) : [] );
  $location_field_name_config = \Drupal::config('auto_load_location.settings')->get('entity_reference_field_name');
  $enabled_autoload_edit = \Drupal::config('auto_load_location.settings')->get('enabled_autoload_edit');

  // Content type of current node which the form is attached to.
  $destination_content_type = (isset($form["#process"][1][0]) ? $form["#process"][1][0]->getTargetBundle() : '');

  if ( isset($destination_content_type) && !empty($destination_content_type) && in_array($destination_content_type, $content_types) ) {
    
    // Add autoload buttons for entity reference field.
    foreach ($form as $field_name => $field) {
      if (preg_match('/field_/', $field_name, $matches)) {
        if(isset($form[$field_name]["widget"][0]["target_id"]) && $form[$field_name]["widget"][0]["target_id"]["#type"] == 'entity_autocomplete') {
          // Add load address button to reference field.
          $load_address_label = t('Load address');
          // Add load lat/lon button to reference field.
          $load_geolocation_label = t('Load geolocation');
          if (!empty($location_field_name_config) && $location_field_name_config == $field_name) {
            $form[$field_name]["#suffix"] = '<div id="load-address"><span class="button autoloading-button" id="load-address-button">'.$load_address_label.'</span></div><div id="load-geolocation"><span class="button autoloading-button" id="load-geolocation-button">'.$load_geolocation_label.'</span></div>';
          }
          break;
        }
      }
    }

    // Stop if autoload on node edit is not enabled.
    if (!$enabled_autoload_edit) {
      return false;
    }

    // Get first entity reference location field name
    if ($node) {
      foreach ($node->getFields() as $name => $field) {
        $field_name = $field->getName();  
        if (preg_match('/field_/', $field_name, $matches)) {
          // Make sure the saved field name in configuration is the same as called entity reference field.
          if ($field_name == $location_field_name_config && $field->getFieldDefinition()->getType() == "entity_reference") {  
            $location_field_name = $field_name;
            break;
          }
        }
      }
    }

    // Add load button and set default value for fields on node edit.
    if ( isset($location_field_name) &&
      ($form_id == 'node_'.$destination_content_type.'_edit_form' || 
      $form_id == 'node_'.$destination_content_type.'_form') ) {

      foreach ($form as $field_name => $field) {
        if (preg_match('/field_/', $field_name, $matches)) {
          // Determine if address field exists.
          if (isset($field["widget"][0]["address"])) {
            
            if ($form_state->getUserInput() || $form_id == 'node_'.$destination_content_type.'_edit_form') {
              // Get address info.
              $address_info = auto_load_location_get_address_info('address', $node, $form_id, $form_state, $destination_content_type, $location_field_name);
              // Populate address info for target field.
              if (isset($address_info['location_country_code'])) {
                $form[$field_name]["widget"][0]["address"]["#default_value"]["country_code"] = $address_info['location_country_code'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["administrative_area"] = $address_info['location_administrative_area'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["locality"] = $address_info['location_locality'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["dependent_locality"] = $address_info['location_dependent_locality'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["postal_code"] = $address_info['location_postal_code'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["sorting_code"] = $address_info['location_sorting_code'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["address_line1"] = $address_info['location_address_line1'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["address_line2"] = $address_info['location_address_line2'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["organization"] = $address_info['location_organization'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["given_name"] = $address_info['location_given_name'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["additional_name"] = $address_info['location_additional_name'];
                $form[$field_name]["widget"][0]["address"]["#default_value"]["family_name"] = $address_info['location_family_name'];
              }
              
            }
          }
          // Determine if geolocation field exists.
          else if (isset($field["widget"][0]["lat"])) {

            if ($form_state->getUserInput() || $form_id == 'node_'.$destination_content_type.'_edit_form') {
              // Get geolocation info.
              $address_info = auto_load_location_get_address_info('latlon', $node, $form_id, $form_state, $destination_content_type, $location_field_name);
              // Populate geolocation info for target field.
              if (isset($address_info['location_lat'])) {
                $form[$field_name]["widget"][0]["lat"]["#default_value"] = $address_info['location_lat'];
                $form[$field_name]["widget"][0]["lng"]["#default_value"] = $address_info['location_lon'];
              }
            }

          }
        }
      }

    }
  }
}

/**
 * Get address for form.
 */
function auto_load_location_get_address_info($type, $node, $form_id, $form_state, $destination_content_type, $location_field_name) {
  if ($form_id == 'node_'.$destination_content_type.'_form') {
    $referenced_node = $form_state->getUserInput()[$location_field_name][0]["target_id"];
    preg_match('/^(.*?)\(([0-9]+)\)$/', $referenced_node, $matches);
    $referenced_id = $matches[2];
  }
  else if ($node->get($location_field_name)->getValue()[0]["target_id"]) {
    $referenced_id = $node->get($location_field_name)->getValue()[0]["target_id"];
  }
  else {
    return false;
  }

  // Call address class to get location data.
  $address = new Address();
  $address_json = ($type == 'address' ? $address->getAddress($referenced_id) : $address->getLatLon($referenced_id));
  $address_info = Json::decode($address_json->getContent());
  
  return $address_info;
}