<?php

/**
 * @file
 * Install, update and uninstall functions for the custom block module.
 */

use Drupal\Core\Entity\EntityTypeInterface;

/**
 * Implements hook_schema().
 */
function block_content_schema() {
  $schema = array();
  $schema['block_content'] = array(
    'description' => 'Stores contents of custom-made blocks.',
    'fields' => array(
      'id' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => "The block's {block_content}.id.",
      ),
      'uuid' => array(
        'description' => 'Unique Key: Universally unique identifier for this entity.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => FALSE,
      ),
      'info' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Block description.',
      ),
      // Defaults to NULL in order to avoid a brief period of potential
      // deadlocks on the index.
      'revision_id' => array(
        'description' => 'The current {block_content_revision}.revision_id version identifier.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => FALSE,
        'default' => NULL,
      ),
      'type' => array(
        'description' => 'The type of this custom block.',
        'type' => 'varchar',
        'length' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
        'not null' => TRUE,
        'default' => '',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the custom block was most recently saved.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'langcode' => array(
        'description' => 'The {language}.langcode of this node.',
        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '',
      ),
    ),
    'primary key' => array('id'),
    'indexes' => array(
      'block_content_type' => array('type'),
    ),
    'unique keys' => array(
      'revision_id' => array('revision_id'),
      'uuid' => array('uuid'),
      'info' => array('info'),
    ),
    'foreign keys' => array(
      'block_content_revision' => array(
        'table' => 'block_content_revision',
        'columns' => array('revision_id' => 'revision_id'),
      ),
    ),
  );

  $schema['block_content_revision'] = array(
    'description' => 'Stores contents of custom-made blocks.',
    'fields' => array(
      'id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => "The block's {block_content}.id.",
      ),
      // Defaults to NULL in order to avoid a brief period of potential
      // deadlocks on the index.
      'revision_id' => array(
        'description' => 'The current version identifier.',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'revision_log' => array(
        'description' => 'The log entry explaining the changes in this version.',
        'type' => 'text',
        'not null' => FALSE,
        'size' => 'big',
      ),
      'info' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Block description.',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the version was most recently saved.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array('revision_id'),
  );
  return $schema;
}