<?php

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

/**
 * Implements hook_schema().
 */
function paragraphs_schema() {
  $schema = array();
  $schema['paragraphs_bundle'] = array(
    'description' => 'Stores information about paragraphs bundles.',
    'fields' => array(
      'bundle' => array(
        'description' => 'The machine-readable name of this bundle.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
      'name' => array(
        'description' => 'The human-readable name of this bundle.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'translatable' => TRUE,
      ),
      'locked' => array(
        'description' => 'A boolean indicating whether the administrator can change the machine name of this bundle.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
      ),
    ),
    'primary key' => array('bundle'),
  );

  $schema['paragraphs_item'] = array(
    'description' => 'Stores information about paragraph items.',
    'fields' => array(
      'item_id' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Primary Key: Unique paragraph item ID.',
      ),
      'revision_id' => array(
        'type' => 'int',
        'not null' => TRUE,
        'description' => 'Default revision ID.',
      ),
      'bundle' => array(
        'description' => 'The bundle of this paragraph item.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
      'field_name' => array(
        'description' => 'Field name of the host entity.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
      'archived' => array(
        'description' => 'Boolean indicating whether the paragraph item is archived.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array('item_id'),
  );

  $schema['paragraphs_item_revision'] = array(
    'description' => 'Stores revision information about paragraph items.',
    'fields' => array(
      'revision_id' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Primary Key: Unique revision ID.',
      ),
      'item_id' => array(
        'type' => 'int',
        'not null' => TRUE,
        'description' => 'Paragraph item ID.',
      ),
    ),
    'primary key' => array('revision_id'),
    'indexes' => array(
      'item_id' => array('item_id'),
    ),
    'foreign keys' => array(
      'versioned_paragraphs_item' => array(
        'table' => 'paragraphs_item',
        'columns' => array('item_id' => 'item_id'),
      ),
    ),
  );
  return $schema;
}

/**
 * Implements hook_field_schema().
 */
function paragraphs_field_schema($field) {
  $columns = array();
  if ($field['type'] == 'paragraphs') {
    $columns = array(
      'value' => array(
        'type' => 'int',
        'not null' => FALSE,
        'description' => 'The paragraph item id.',
      ),
      'revision_id' => array(
        'type' => 'int',
        'not null' => FALSE,
        'description' => 'The paragraph item revision id.',
      ),
    );
  }
  return array(
    'columns' => $columns,
  );
}

/**
 * Make sure all paragraph fields have the new index on revision_id.
 */
function paragraphs_update_7100() {
  // Update the paragraphs_field_schema columns for all tables.
  foreach (field_read_fields(array('type' => 'paragraphs')) as $field) {
    field_update_field($field);
  }
}

/**
 * Make sure the entitycache table exists.
 */
function paragraphs_update_7101() {
  if (module_exists('entitycache') && !db_table_exists("cache_entity_paragraphs_item")) {
    drupal_load('module', 'entitycache');
    $cache_schema = drupal_get_schema_unprocessed('system', 'cache');
    $cache_schema['description'] = "Cache table used to store paragraphs_item entity records.";
    db_create_table("cache_entity_paragraphs_item", $cache_schema);
  }
}