Drupal 8 - Module create content type and fields on install

Drupal 8 - Module create content type and fields on install

<?php
/**
 * Implements hook_install().
 */
function gamecontenttype_install() {
  node_types_rebuild();
  $types = node_type_get_types();
  foreach(_gamecontenttype_fields() as $field) {
    field_create_field($field);
  }
  
  foreach(_gamecontenttype_instances() as $fieldinstance) {
    $fieldinstance['entity_type'] = 'node';
    $fieldinstance['bundle'] = 'game';
    print_r($fieldinstance);
    field_create_instance($fieldinstance);
  }
}


/**
 * Implements hook_uninstall().
 */
function gamecontenttype_uninstall() {
    $ournewtype = 'game';
    $sql = 'SELECT nid FROM {node} n WHERE n.type = :type';
    $result = db_query($sql, array(':type' => $ournewtype));
    $nodeids = array();
    foreach ($result as $row) {
        $nodeids[] = $row->nid;
    }
    node_delete_multiple($nodeids);
    delete_game_fields();
    node_type_delete($ournewtype);
    field_purge_batch(500);
}

function delete_game_fields() {
    foreach (array_keys(_gamecontenttype_fields()) as $field) {
        field_delete_field($field);
    }
    $instances = field_info_instances('node', 'game');
    foreach ($instances as $instance_name => $fieldinstance) {
        field_delete_instance($fieldinstance);
    }
}


function _gamecontenttype_fields() {
    $t = get_t();
    return array(
        'game_player_1' => array(
            'field_name' => 'game_player_1',
            'label' => $t('Player one'),
            'cardinality' => 1,
            'type' => 'user_reference',
            'entity_types' => array('node'),
            'settings' => array(
                'referenceable_status' => array(
                    0 => 0,
                    1 => '1',
                ),  
            ) 
        ),
        'game_player_2' => array(
            'field_name' => 'game_player_2',
            'label' => $t('Player two'),
            'cardinality' => 1,
            'type' => 'user_reference',
            'entity_types' => array('node'),
            'settings' => array(
                'referenceable_status' => array(
                    0 => 0,
                    1 => '1',
                ),  
            ) 
        ),
        'game_winner' => array(
            'field_name' => 'game_winner',
            'label' => $t('Who is the winner?'),
            'cardinality' => 1,
            'type' => 'user_reference',
            'entity_types' => array('node'),
            'settings' => array(
                'referenceable_status' => array(
                    0 => 0,
                    1 => '1',
                ),  
            ) 
        ),
    );
}


function _gamecontenttype_instances() {
    $t = get_t();
    return array(
        'game_player_1' => array(
            'field_name' => 'game_player_1',
            'entity_type' => array('node'),
            'bundle' => 'game',
            'label' => $t('Player One'),
            'required' => TRUE,
            'widget' => array(
                'active' => 1,
                'module' => 'options',
                'settings' => array(
                        'apply_chosen' => '',
                ),
                'type' => 'options_select',
                'weight' => '40',
                ),
           'display' => array(),
        ),
        'game_player_2' => array(
            'field_name' => 'game_player_2',
            'entity_type' => array('node'),
            'bundle' => 'game',
            'label' => $t('Player Two'),
            'required' => TRUE,
            'widget' => array(
                'active' => 1,
                'module' => 'options',
                'settings' => array(
                        'apply_chosen' => '',
                ),
                'type' => 'options_select',
                'weight' => '40',
            ),
           'display' => array(),
        ),
        'game_winner' => array(
            'field_name' => 'game_winner',
            'entity_type' => array('node'),
            'bundle' => 'game',
            'label' => $t('Game Winner'),
            'required' => TRUE,
            'widget' => array(
                'active' => 1,
                'module' => 'options',
                'settings' => array(
                        'apply_chosen' => '',
                ),
                'type' => 'options_select',
                'weight' => '41',
            ),
           'display' => array(),
        ),
    );
}