<?php

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

/**
 * Implementation of hook_schema().
 */
function block_class_schema() {
  $schema['block_class'] = array(
    'fields' => array(
      'module' => array(
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
        'default' => '',
        'description' => 'The module to which the block belongs.',
      ),
      'delta' => array(
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => '',
        'description' => "The ID of the module's block.",
      ),
      'css_class' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'String containing the classes for the block.',
      ),
    ),
    'primary key' => array('module', 'delta'),
  );

  return $schema;
}

/**
 * Alters the structure of {block_class} schema.
 */
function block_class_update_7100() {
  // Update the schema.
  db_drop_primary_key('block_class');

  db_change_field('block_class', 'module', 'module',
    array(
      'type' => 'varchar',
      'length' => '255',
      'not null' => TRUE,
      'default' => '',
      'description' => 'The module to which the block belongs.',
    )
  );

  db_change_field('block_class', 'delta', 'delta',
    array(
      'type' => 'varchar',
      'length' => '255',
      'not null' => TRUE,
      'default' => '',
      'description' => "The ID of the module's block.",
    )
  );

  db_change_field('block_class', 'css_class', 'css_class',
    array(
      'type' => 'varchar',
      'length' => '255',
      'not null' => TRUE,
      'default' => '',
      'description' => 'String containing the classes for the block.',
    )
  );

  // Restore the primary key.
  db_add_primary_key('block_class', array('module', 'delta'));
}

/**
 * Fix too long primary key length in {block_class}.
 */
function block_class_update_7101() {
  // Drop current primary key.
  db_drop_primary_key('block_class');

  db_change_field('block_class', 'module', 'module', array(
    'type' => 'varchar',
    'length' => 64,
    'not null' => TRUE,
    'default' => '',
    'description' => 'The module to which the block belongs.',
  ));
  db_change_field('block_class', 'delta', 'delta', array(
    'type' => 'varchar',
    'length' => 32,
    'not null' => TRUE,
    'default' => '',
    'description' => "The ID of the module's block.",
  ));

  // Create new primary key.
  db_add_primary_key('block_class', array('module', 'delta'));
}