customer-riverside/web/modules/custom/riverside_pt/riverside_pt.install

<?php

use Drupal\node\Entity\NodeType;
use Drupal\user\Entity\Role;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\field\Entity\FieldConfig;

function riverside_pt_install() {
   array_walk([
      // Appointment
      NodeType::create([
         'type' => 'appointment',
         'name' => 'Appointment',
         'description' => 'A booking between a Patient and a Provider at a particular time.',
         'new_revision' => FALSE,
         'display_submitted' => FALSE,
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_appointment_date',
         'entity_type' => 'node',
         'type' => 'datetime',
         'settings' => ['datetime_type' => 'datetime'],
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_duration_minutes',
         'entity_type' => 'node',
         'type' => 'integer',
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_service_type',
         'entity_type' => 'node',
         'type' => 'list_string',
         'settings' => [
            'allowed_values' => [
               'diagnostic' => 'Diagnostic',
               'sports_rehab' => 'Sports Rehab',
               'pre_post_surgical_rehab' => 'Pre/Post-Surgical Rehab',
               'neurological_pt' => 'Neurological PT',
            ],
         ],
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_provider',
         'entity_type' => 'node',
         'type' => 'entity_reference',
         'settings' => ['target_type' => 'user'],
      ]),
      FieldConfig::create([
         'field_name' => 'field_appointment_date',
         'entity_type' => 'node',
         'bundle' => 'appointment',
         'label' => 'Appointment Date',
         'required' => TRUE,
      ]),
      FieldConfig::create([
         'field_name' => 'field_duration_minutes',
         'entity_type' => 'node',
         'bundle' => 'appointment',
         'label' => 'Duration (Minutes)',
         'required' => TRUE,
      ]),
      FieldConfig::create([
         'field_name' => 'field_service_type',
         'entity_type' => 'node',
         'bundle' => 'appointment',
         'label' => 'Service Type',
         'required' => TRUE,
      ]),
      FieldConfig::create([
         'field_name' => 'field_provider',
         'entity_type' => 'node',
         'bundle' => 'appointment',
         'label' => 'Provider',
         'required' => TRUE,
         'settings' => [
            'handler' => 'default:user',
            'handler_settings' => [
               'filter' => [
                  'type' => '_role',
                  'role' => ['provider' => 'provider'],
               ],
            ],
         ],
      ]),

      // Provider
      Role::create([
         'id' => 'provider',
         'label' => 'Provider',
      ]),

      // Provider Availability
      NodeType::create([
         'type' => 'provider_availability',
         'name' => 'Provider Availability',
         'description' => 'A window of time during which a Provider is available for appointments.',
         'new_revision' => FALSE,
         'display_submitted' => FALSE,
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_start_datetime',
         'entity_type' => 'node',
         'type' => 'datetime',
         'settings' => ['datetime_type' => 'datetime'],
      ]),
      FieldStorageConfig::create([
         'field_name' => 'field_end_datetime',
         'entity_type' => 'node',
         'type' => 'datetime',
         'settings' => ['datetime_type' => 'datetime'],
      ]),
      FieldConfig::create([
         'field_name' => 'field_provider',
         'entity_type' => 'node',
         'bundle' => 'provider_availability',
         'label' => 'Provider',
         'required' => TRUE,
         'settings' => [
            'handler' => 'default:user',
            'handler_settings' => [
               'filter' => [
                  'type' => '_role',
                  'role' => ['provider' => 'provider'],
               ],
            ],
         ],
      ]),
      FieldConfig::create([
         'field_name' => 'field_start_datetime',
         'entity_type' => 'node',
         'bundle' => 'provider_availability',
         'label' => 'Start',
         'required' => TRUE,
      ]),
      FieldConfig::create([
         'field_name' => 'field_end_datetime',
         'entity_type' => 'node',
         'bundle' => 'provider_availability',
         'label' => 'End',
         'required' => TRUE,
      ]),
   ], fn($entity) => $entity->save());
}