comment.install

<?php


/**
 * @file
 * Install, update and uninstall functions for the Comment module.
 */
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\field\Entity\FieldStorageConfig;

/**
 * Implements hook_uninstall().
 */
function comment_uninstall() {
    // Remove the comment fields.
    $storage = \Drupal::entityTypeManager()->getStorage('field_storage_config');
    $fields = $storage->loadByProperties([
        'type' => 'comment',
    ]);
    $storage->delete($fields);
    // Remove state setting.
    \Drupal::state()->delete('comment.node_comment_statistics_scale');
}

/**
 * Implements hook_install().
 */
function comment_install() {
    // By default, maintain entity statistics for comments.
    // @see \Drupal\comment\CommentStatisticsInterface
    \Drupal::state()->set('comment.maintain_entity_statistics', TRUE);
}

/**
 * Implements hook_schema().
 */
function comment_schema() {
    $schema['comment_entity_statistics'] = [
        'description' => 'Maintains statistics of entity and comments posts to show "new" and "updated" flags.',
        'fields' => [
            'entity_id' => [
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => 'The entity_id of the entity for which the statistics are compiled.',
            ],
            'entity_type' => [
                'type' => 'varchar_ascii',
                'not null' => TRUE,
                'default' => 'node',
                'length' => EntityTypeInterface::ID_MAX_LENGTH,
                'description' => 'The entity_type of the entity to which this comment is a reply.',
            ],
            'field_name' => [
                'type' => 'varchar_ascii',
                'not null' => TRUE,
                'default' => '',
                'length' => FieldStorageConfig::NAME_MAX_LENGTH,
                'description' => 'The field_name of the field that was used to add this comment.',
            ],
            'cid' => [
                'type' => 'int',
                'not null' => TRUE,
                'default' => 0,
                'description' => 'The {comment}.cid of the last comment.',
            ],
            'last_comment_timestamp' => [
                'type' => 'int',
                'not null' => TRUE,
                'default' => 0,
                'description' => 'The Unix timestamp of the last comment that was posted within this node, from {comment}.changed.',
                'size' => 'big',
            ],
            'last_comment_name' => [
                'type' => 'varchar',
                'length' => 60,
                'not null' => FALSE,
                'description' => 'The name of the latest author to post a comment on this node, from {comment}.name.',
            ],
            'last_comment_uid' => [
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => 'The user ID of the latest author to post a comment on this node, from {comment}.uid.',
            ],
            'comment_count' => [
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => 'The total number of comments on this entity.',
            ],
        ],
        'primary key' => [
            'entity_id',
            'entity_type',
            'field_name',
        ],
        'indexes' => [
            'last_comment_timestamp' => [
                'last_comment_timestamp',
            ],
            'comment_count' => [
                'comment_count',
            ],
            'last_comment_uid' => [
                'last_comment_uid',
            ],
        ],
        'foreign keys' => [
            'last_comment_author' => [
                'table' => 'users',
                'columns' => [
                    'last_comment_uid' => 'uid',
                ],
            ],
        ],
    ];
    return $schema;
}

/**
 * Implements hook_update_last_removed().
 */
function comment_update_last_removed() {
    return 10100;
}