class CommentViewsData

class CommentViewsData extends EntityViewsData {
    
    /**
     * {@inheritdoc}
     */
    public function getViewsData() {
        $data = parent::getViewsData();
        $data['comment_field_data']['table']['base']['help'] = $this->t('Comments are responses to content.');
        $data['comment_field_data']['table']['base']['access query tag'] = 'comment_access';
        $data['comment_field_data']['table']['wizard_id'] = 'comment';
        $data['comment_field_data']['subject']['title'] = $this->t('Title');
        $data['comment_field_data']['subject']['help'] = $this->t('The title of the comment.');
        $data['comment_field_data']['subject']['field']['default_formatter'] = 'comment_permalink';
        $data['comment_field_data']['name']['title'] = $this->t('Author');
        $data['comment_field_data']['name']['help'] = $this->t("The name of the comment's author. Can be rendered as a link to the author's homepage.");
        $data['comment_field_data']['name']['field']['default_formatter'] = 'comment_username';
        $data['comment_field_data']['homepage']['title'] = $this->t("Author's website");
        $data['comment_field_data']['homepage']['help'] = $this->t("The website address of the comment's author. Can be rendered as a link. Will be empty if the author is a registered user.");
        $data['comment_field_data']['mail']['help'] = $this->t('Email of user that posted the comment. Will be empty if the author is a registered user.');
        $data['comment_field_data']['created']['title'] = $this->t('Post date');
        $data['comment_field_data']['created']['help'] = $this->t('Date and time of when the comment was created.');
        $data['comment_field_data']['created_fulldata'] = [
            'title' => $this->t('Created date'),
            'help' => $this->t('Date in the form of CCYYMMDD.'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_fulldate',
            ],
        ];
        $data['comment_field_data']['created_year_month'] = [
            'title' => $this->t('Created year + month'),
            'help' => $this->t('Date in the form of YYYYMM.'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_year_month',
            ],
        ];
        $data['comment_field_data']['created_year'] = [
            'title' => $this->t('Created year'),
            'help' => $this->t('Date in the form of YYYY.'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_year',
            ],
        ];
        $data['comment_field_data']['created_month'] = [
            'title' => $this->t('Created month'),
            'help' => $this->t('Date in the form of MM (01 - 12).'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_month',
            ],
        ];
        $data['comment_field_data']['created_day'] = [
            'title' => $this->t('Created day'),
            'help' => $this->t('Date in the form of DD (01 - 31).'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_day',
            ],
        ];
        $data['comment_field_data']['created_week'] = [
            'title' => $this->t('Created week'),
            'help' => $this->t('Date in the form of WW (01 - 53).'),
            'argument' => [
                'field' => 'created',
                'id' => 'date_week',
            ],
        ];
        $data['comment_field_data']['changed']['title'] = $this->t('Updated date');
        $data['comment_field_data']['changed']['help'] = $this->t('Date and time of when the comment was last updated.');
        $data['comment_field_data']['changed_fulldata'] = [
            'title' => $this->t('Changed date'),
            'help' => $this->t('Date in the form of CCYYMMDD.'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_fulldate',
            ],
        ];
        $data['comment_field_data']['changed_year_month'] = [
            'title' => $this->t('Changed year + month'),
            'help' => $this->t('Date in the form of YYYYMM.'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_year_month',
            ],
        ];
        $data['comment_field_data']['changed_year'] = [
            'title' => $this->t('Changed year'),
            'help' => $this->t('Date in the form of YYYY.'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_year',
            ],
        ];
        $data['comment_field_data']['changed_month'] = [
            'title' => $this->t('Changed month'),
            'help' => $this->t('Date in the form of MM (01 - 12).'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_month',
            ],
        ];
        $data['comment_field_data']['changed_day'] = [
            'title' => $this->t('Changed day'),
            'help' => $this->t('Date in the form of DD (01 - 31).'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_day',
            ],
        ];
        $data['comment_field_data']['changed_week'] = [
            'title' => $this->t('Changed week'),
            'help' => $this->t('Date in the form of WW (01 - 53).'),
            'argument' => [
                'field' => 'changed',
                'id' => 'date_week',
            ],
        ];
        $data['comment_field_data']['status']['title'] = $this->t('Approved status');
        $data['comment_field_data']['status']['help'] = $this->t('Whether the comment is approved (or still in the moderation queue).');
        $data['comment_field_data']['status']['filter']['label'] = $this->t('Approved comment status');
        $data['comment_field_data']['status']['filter']['type'] = 'yes-no';
        $data['comment']['approve_comment'] = [
            'field' => [
                'title' => $this->t('Link to approve comment'),
                'help' => $this->t('Provide a simple link to approve the comment.'),
                'id' => 'comment_link_approve',
            ],
        ];
        $data['comment']['replyto_comment'] = [
            'field' => [
                'title' => $this->t('Link to reply-to comment'),
                'help' => $this->t('Provide a simple link to reply to the comment.'),
                'id' => 'comment_link_reply',
            ],
        ];
        $data['comment_field_data']['entity_id']['field']['id'] = 'commented_entity';
        unset($data['comment_field_data']['entity_id']['relationship']);
        $data['comment']['comment_bulk_form'] = [
            'title' => $this->t('Comment operations bulk form'),
            'help' => $this->t('Add a form element that lets you run operations on multiple comments.'),
            'field' => [
                'id' => 'comment_bulk_form',
            ],
        ];
        $data['comment_field_data']['thread']['field'] = [
            'title' => $this->t('Depth'),
            'help' => $this->t('Display the depth of the comment if it is threaded.'),
            'id' => 'comment_depth',
        ];
        $data['comment_field_data']['thread']['sort'] = [
            'title' => $this->t('Thread'),
            'help' => $this->t('Sort by the threaded order. This will keep child comments together with their parents.'),
            'id' => 'comment_thread',
        ];
        unset($data['comment_field_data']['thread']['filter']);
        unset($data['comment_field_data']['thread']['argument']);
        $entities_types = \Drupal::entityTypeManager()->getDefinitions();
        // Provide a relationship for each entity type except comment.
        foreach ($entities_types as $type => $entity_type) {
            if ($type == 'comment' || !$entity_type->entityClassImplements(ContentEntityInterface::class) || !$entity_type->getBaseTable()) {
                continue;
            }
            if (\Drupal::service('comment.manager')->getFields($type)) {
                $data['comment_field_data'][$type] = [
                    'relationship' => [
                        'title' => $entity_type->getLabel(),
                        'help' => $this->t('The @entity_type to which the comment is a reply to.', [
                            '@entity_type' => $entity_type->getLabel(),
                        ]),
                        'base' => $entity_type->getDataTable() ?: $entity_type->getBaseTable(),
                        'base field' => $entity_type->getKey('id'),
                        'relationship field' => 'entity_id',
                        'id' => 'standard',
                        'label' => $entity_type->getLabel(),
                        'extra' => [
                            [
                                'field' => 'entity_type',
                                'value' => $type,
                                'table' => 'comment_field_data',
                            ],
                        ],
                    ],
                ];
            }
        }
        $data['comment_field_data']['uid']['title'] = $this->t('Author uid');
        $data['comment_field_data']['uid']['help'] = $this->t('If you need more fields than the uid add the comment: author relationship');
        $data['comment_field_data']['uid']['relationship']['title'] = $this->t('Author');
        $data['comment_field_data']['uid']['relationship']['help'] = $this->t("The User ID of the comment's author.");
        $data['comment_field_data']['uid']['relationship']['label'] = $this->t('author');
        $data['comment_field_data']['pid']['title'] = $this->t('Parent CID');
        $data['comment_field_data']['pid']['relationship']['title'] = $this->t('Parent comment');
        $data['comment_field_data']['pid']['relationship']['help'] = $this->t('The parent comment');
        $data['comment_field_data']['pid']['relationship']['label'] = $this->t('parent');
        // Define the base group of this table. Fields that don't have a group defined
        // will go into this field by default.
        $data['comment_entity_statistics']['table']['group'] = $this->t('Comment Statistics');
        // Provide a relationship for each entity type except comment.
        foreach ($entities_types as $type => $entity_type) {
            if ($type == 'comment' || !$entity_type->entityClassImplements(ContentEntityInterface::class) || !$entity_type->getBaseTable()) {
                continue;
            }
            // This relationship does not use the 'field id' column, if the entity has
            // multiple comment-fields, then this might introduce duplicates, in which
            // case the site-builder should enable aggregation and SUM the comment_count
            // field. We cannot create a relationship from the base table to
            // {comment_entity_statistics} for each field as multiple joins between
            // the same two tables is not supported.
            if (\Drupal::service('comment.manager')->getFields($type)) {
                $data['comment_entity_statistics']['table']['join'][$entity_type->getDataTable() ?: $entity_type->getBaseTable()] = [
                    'type' => 'LEFT',
                    'left_field' => $entity_type->getKey('id'),
                    'field' => 'entity_id',
                    'extra' => [
                        [
                            'field' => 'entity_type',
                            'value' => $type,
                        ],
                    ],
                ];
            }
        }
        $data['comment_entity_statistics']['last_comment_timestamp'] = [
            'title' => $this->t('Last comment time'),
            'help' => $this->t('Date and time of when the last comment was posted.'),
            'field' => [
                'id' => 'comment_last_timestamp',
            ],
            'sort' => [
                'id' => 'date',
            ],
            'filter' => [
                'id' => 'date',
            ],
        ];
        $data['comment_entity_statistics']['last_comment_name'] = [
            'title' => $this->t("Last comment author"),
            'help' => $this->t('The name of the author of the last posted comment.'),
            'field' => [
                'id' => 'comment_ces_last_comment_name',
                'no group by' => TRUE,
            ],
            'sort' => [
                'id' => 'comment_ces_last_comment_name',
                'no group by' => TRUE,
            ],
        ];
        $data['comment_entity_statistics']['comment_count'] = [
            'title' => $this->t('Comment count'),
            'help' => $this->t('The number of comments an entity has.'),
            'field' => [
                'id' => 'numeric',
            ],
            'filter' => [
                'id' => 'numeric',
            ],
            'sort' => [
                'id' => 'standard',
            ],
            'argument' => [
                'id' => 'standard',
            ],
        ];
        $data['comment_entity_statistics']['last_updated'] = [
            'title' => $this->t('Updated/commented date'),
            'help' => $this->t('The most recent of last comment posted or entity updated time.'),
            'field' => [
                'id' => 'comment_ces_last_updated',
                'no group by' => TRUE,
            ],
            'sort' => [
                'id' => 'comment_ces_last_updated',
                'no group by' => TRUE,
            ],
            'filter' => [
                'id' => 'comment_ces_last_updated',
            ],
        ];
        $data['comment_entity_statistics']['cid'] = [
            'title' => $this->t('Last comment CID'),
            'help' => $this->t('Display the last comment of an entity'),
            'relationship' => [
                'title' => $this->t('Last comment'),
                'help' => $this->t('The last comment of an entity.'),
                'group' => $this->t('Comment'),
                'base' => 'comment',
                'base field' => 'cid',
                'id' => 'standard',
                'label' => $this->t('Last Comment'),
            ],
        ];
        $data['comment_entity_statistics']['last_comment_uid'] = [
            'title' => $this->t('Last comment uid'),
            'help' => $this->t('The User ID of the author of the last comment of an entity.'),
            'relationship' => [
                'title' => $this->t('Last comment author'),
                'base' => 'users',
                'base field' => 'uid',
                'id' => 'standard',
                'label' => $this->t('Last comment author'),
            ],
            'filter' => [
                'id' => 'numeric',
            ],
            'argument' => [
                'id' => 'numeric',
            ],
            'field' => [
                'id' => 'numeric',
            ],
        ];
        $data['comment_entity_statistics']['entity_type'] = [
            'title' => $this->t('Entity type'),
            'help' => $this->t('The entity type to which the comment is a reply to.'),
            'field' => [
                'id' => 'standard',
            ],
            'filter' => [
                'id' => 'string',
            ],
            'argument' => [
                'id' => 'string',
            ],
            'sort' => [
                'id' => 'standard',
            ],
        ];
        $data['comment_entity_statistics']['field_name'] = [
            'title' => $this->t('Comment field name'),
            'help' => $this->t('The field name from which the comment originated.'),
            'field' => [
                'id' => 'standard',
            ],
            'filter' => [
                'id' => 'string',
            ],
            'argument' => [
                'id' => 'string',
            ],
            'sort' => [
                'id' => 'standard',
            ],
        ];
        return $data;
    }

}