<?php

namespace Drupal\{{ machine_name }}\Plugin\Field\FieldType;

{% if random %}
use Drupal\Component\Utility\Random;
{% endif %}
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemBase;
use Drupal\Core\Field\FieldStorageDefinitionInterface;
{% if storage_settings or instance_settings %}
use Drupal\Core\Form\FormStateInterface;
{% endif %}
{% if email %}
use Drupal\Core\Render\Element\Email;
{% endif %}
use Drupal\Core\TypedData\DataDefinition;

/**
 * Defines the '{{ field_id }}' field type.
 *
 * @FieldType(
 *   id = "{{ field_id }}",
 *   label = @Translation("{{ field_label }}"),
 *   category = @Translation("General"),
 *   default_widget = "{{ field_id }}",
 *   default_formatter = "{{ field_id }}_default"
 * )
 */
class {{ type_class }} extends FieldItemBase {

{% if storage_settings %}
  /**
   * {@inheritdoc}
   */
  public static function defaultStorageSettings() {
    $settings = ['foo' => 'example'];
    return $settings + parent::defaultStorageSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
    $settings = $this->getSettings();

    $element['foo'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Foo'),
      '#default_value' => $settings['foo'],
      '#disabled' => $has_data,
    ];

    return $element;
  }

{% endif %}
{% if instance_settings %}
  /**
   * {@inheritdoc}
   */
  public static function defaultFieldSettings() {
    $settings = ['bar' => 'example'];
    return $settings + parent::defaultFieldSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function fieldSettingsForm(array $form, FormStateInterface $form_state) {
    $settings = $this->getSettings();

    $element['bar'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Foo'),
      '#default_value' => $settings['bar'],
    ];

    return $element;
  }

{% endif %}
  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
{% for subfield in subfields %}
  {% set condition %}
    {% if subfield.type == 'boolean' %}$this->{{ subfield.machine_name }} == 1{% else %}$this->{{ subfield.machine_name }} !== NULL{% endif %}
  {% endset %}
  {% if loop.index == 1 %}
    if ({{ condition }}) {
  {% else %}
    elseif ({{ condition }}) {
  {% endif %}
      return FALSE;
    }
{% endfor %}
    return TRUE;
  }

  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {

{% for subfield in subfields %}
    $properties['{{ subfield.machine_name }}'] = DataDefinition::create('{{ subfield.data_type }}')
      ->setLabel(t('{{ subfield.name }}'));
{% endfor %}

    return $properties;
  }

  /**
   * {@inheritdoc}
   */
  public function getConstraints() {
    $constraints = parent::getConstraints();

{% for subfield in subfields %}
  {% if subfield.list %}
    $options['{{ subfield.machine_name }}']['AllowedValues'] = array_keys({{ type_class }}::{{ subfield.allowed_values_method }}());

  {% endif %}
  {% if subfield.required %}
    {% if subfield.type == 'boolean' %}
    // NotBlank validator is not suitable for booleans because it does not
    // recognize '0' as an empty value.
    $options['{{ subfield.machine_name }}']['AllowedValues']['choices'] = [1];
    $options['{{ subfield.machine_name }}']['AllowedValues']['message'] = $this->t('This value should not be blank.');

    {% else %}
    $options['{{ subfield.machine_name }}']['NotBlank'] = [];

      {% if subfield.type == 'email' %}
    $options['{{ subfield.machine_name }}']['Length']['max'] = Email::EMAIL_MAX_LENGTH;

      {% endif %}
    {% endif %}
  {% endif %}
{% endfor %}
{% if list or required %}
    $constraint_manager = \Drupal::typedDataManager()->getValidationConstraintManager();
    $constraints[] = $constraint_manager->create('ComplexData', $options);
{% endif %}
    // @todo Add more constrains here.
    return $constraints;
  }

  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {

    $columns = [
{% for subfield in subfields %}
      '{{ subfield.machine_name }}' => [
  {% if subfield.type == 'boolean' %}
        'type' => 'int',
        'size' => 'tiny',
  {% elseif subfield.type == 'string' %}
        'type' => 'varchar',
        'length' => 255,
  {% elseif subfield.type == 'text' %}
        'type' => 'text',
        'size' => 'big',
  {% elseif subfield.type == 'integer' %}
        'type' => 'int',
        'size' => 'normal',
  {% elseif subfield.type == 'float' %}
        'type' => 'float',
        'size' => 'normal',
  {% elseif subfield.type == 'numeric' %}
        'type' => 'numeric',
        'precision' => 10,
        'scale' => 2,
  {% elseif subfield.type == 'email' %}
        'type' => 'varchar',
        'length' => Email::EMAIL_MAX_LENGTH,
  {% elseif subfield.type == 'telephone' %}
        'type' => 'varchar',
        'length' => 255,
  {% elseif subfield.type == 'uri' %}
        'type' => 'varchar',
        'length' => 2048,
  {% elseif subfield.type == 'datetime' %}
        'type' => 'varchar',
        'length' => 20,
  {% endif %}
      ],
{% endfor %}
    ];

    $schema = [
      'columns' => $columns,
      // @DCG Add indexes here if necessary.
    ];

    return $schema;
  }

  /**
   * {@inheritdoc}
   */
  public static function generateSampleValue(FieldDefinitionInterface $field_definition) {

{% if random %}
    $random = new Random();

{% endif %}
{% for subfield in subfields %}
  {% if subfield.list %}
    $values['{{ subfield.machine_name }}'] = array_rand(self::{{ subfield.allowed_values_method }}());

  {% elseif subfield.type == 'boolean' %}
    $values['{{ subfield.machine_name }}'] = (bool) mt_rand(0, 1);

  {% elseif subfield.type == 'string' %}
    $values['{{ subfield.machine_name }}'] = $random->word(mt_rand(1, 255));

  {% elseif subfield.type == 'text' %}
    $values['{{ subfield.machine_name }}'] = $random->paragraphs(5);

  {% elseif subfield.type == 'integer' %}
    $values['{{ subfield.machine_name }}'] = mt_rand(-1000, 1000);

  {% elseif subfield.type == 'float' %}
    $scale = rand(1, 5);
    $random_decimal = mt_rand() / mt_getrandmax() * (1000 - 0);
    $values['{{ subfield.machine_name }}'] = floor($random_decimal * pow(10, $scale)) / pow(10, $scale);

  {% elseif subfield.type == 'numeric' %}
    $scale = rand(10, 2);
    $random_decimal = -1000 + mt_rand() / mt_getrandmax() * (-1000 - 1000);
    $values['{{ subfield.machine_name }}'] = floor($random_decimal * pow(10, $scale)) / pow(10, $scale);

  {% elseif subfield.type == 'email' %}
    $values['{{ subfield.machine_name }}'] = strtolower($random->name()) . '@example.com';

  {% elseif subfield.type == 'telephone' %}
    $values['{{ subfield.machine_name }}'] = mt_rand(pow(10, 8), pow(10, 9) - 1);

  {% elseif subfield.type == 'uri' %}
    $tlds = ['com', 'net', 'gov', 'org', 'edu', 'biz', 'info'];
    $domain_length = mt_rand(7, 15);
    $protocol = mt_rand(0, 1) ? 'https' : 'http';
    $www = mt_rand(0, 1) ? 'www' : '';
    $domain = $random->word($domain_length);
    $tld = $tlds[mt_rand(0, (count($tlds) - 1))];
    $values['{{ subfield.machine_name }}'] = "$protocol://$www.$domain.$tld";

  {% elseif subfield.type == 'datetime' %}
    $timestamp = \Drupal::time()->getRequestTime() - mt_rand(0, 86400 * 365);
    $values['{{ subfield.machine_name }}'] = gmdate('{{ subfield.date_storage_format }}', $timestamp);

  {% endif %}
{% endfor %}
    return $values;
  }

{% for subfield in subfields %}
  {% if subfield.list %}
  /**
   * Returns allowed values for '{{ subfield.machine_name }}' sub-field.
   *
   * @return array
   *   The list of allowed values.
   */
  public static function {{ subfield.allowed_values_method }}() {
    return [
    {% if subfield.type == 'string' %}
      'alpha' => t('Alpha'),
      'beta' => t('Beta'),
      'gamma' => t('Gamma'),
    {% elseif subfield.type == 'integer' %}
      123 => 123,
      456 => 456,
      789 => 789,
    {% elseif subfield.type == 'float' %}
      '12.3' => '12.3',
      '4.56' => '4.56',
      '0.789' => '0.789',
    {% elseif subfield.type == 'numeric' %}
      '12.35' => '12.35',
      '45.65' => '45.65',
      '78.95' => '78.95',
    {% elseif subfield.type == 'email' %}
      'alpha@example.com' => 'alpha@example.com',
      'beta@example.com' => 'beta@example.com',
      'gamma@example.com' => 'gamma@example.com',
    {% elseif subfield.type == 'telephone' %}
      '71234567001' => '+7(123)45-67-001',
      '71234567002' => '+7(123)45-67-002',
      '71234567003' => '+7(123)45-67-003',
    {% elseif subfield.type == 'uri' %}
      'https://example.com' => 'https://example.com',
      'http://www.php.net' => 'http://www.php.net',
      'https://www.drupal.org' => 'https://www.drupal.org',
    {% elseif subfield.type == 'datetime' %}
      {% if subfield.date_type == 'date' %}
      '2018-01-01' => '1 January 2018',
      '2018-02-01' => '1 February 2018',
      '2018-03-01' => '1 March 2018',
      {% else %}
      '2018-01-01T00:10:10' => '1 January 2018, 00:10:10',
      '2018-02-01T00:20:20' => '1 February 2018, 00:20:20',
      '2018-03-01T00:30:30' => '1 March 2018, 00:30:30',
      {% endif %}
    {% endif %}
    ];
  }

  {% endif %}
{% endfor %}
}