<?php

/**
 * @file Rules - Installation file.
 */

/**
 * Implements hook_enable().
 */
function rules_enable() {
  // Enable evaluation of Rules right after enabling the module.
  rules_event_invocation_enabled(TRUE);
}

/**
 * Implements hook_install().
 */
function rules_install() {
  module_load_include('inc', 'rules', 'modules/events');
  // Set the modules' weight to 20, see
  // http://drupal.org/node/445084#comment-1533280 for the reasoning.
  db_query("UPDATE {system} SET weight = 20 WHERE name = 'rules'");
}

/**
 * Implements hook_uninstall().
 */
function rules_uninstall() {
  variable_del('rules_event_whitelist');
  variable_del('rules_debug');
}

/**
 * Implements hook_schema().
 */
function rules_schema() {
  $schema['rules_config'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'The internal identifier for any configuration.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '64',
        'not null' => TRUE,
        'description' => 'The name of the configuration.',
      ),
      'label' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'description' => 'The label of the configuration.',
        'default' => 'unlabeled',
      ),
     'plugin' => array(
        'type' => 'varchar',
        'length' => 127,
        'not null' => TRUE,
        'description' => 'The name of the plugin of this configuration.',
      ),
      'active' => array(
        'description' => 'Boolean indicating whether the configuration is active. Usage depends on how the using module makes use of it.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 1,
      ),
      'weight' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => 'Weight of the configuration. Usage depends on how the using module makes use of it.',
      ),
      'status' => array(
        'type' => 'int',
        'not null' => TRUE,
        // Set the default to ENTITY_CUSTOM without using the constant as it is
        // not safe to use it at this point.
        'default' => 0x01,
        'size' => 'tiny',
        'description' => 'The exportable status of the entity.',
      ),
      'dirty' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => 'Dirty configurations fail the integrity check, e.g. due to missing dependencies.',
      ),
      'module' => array(
        'description' => 'The name of the providing module if the entity has been defined in code.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => FALSE,
      ),
      'owner' => array(
        'description' => 'The name of the module via which the rule has been configured.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => 'rules',
      ),
      'access_exposed' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => 'Whether to use a permission to control access for using components.',
      ),
      'data' => array(
        'type' => 'blob',
        'size' => 'big',
        'not null' => FALSE,
        'serialize' => TRUE,
        'description' => 'Everything else, serialized.',
      ),
    ),
    'primary key' => array('id'),
    'unique keys' => array(
      'name' => array('name'),
    ),
    'indexes' => array(
      'plugin' => array('plugin', 'active'),
    ),
  );
  $schema['rules_trigger'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The primary identifier of the configuration.',
      ),
      'event' => array(
        'type' => 'varchar',
        'length' => '127',
        'not null' => TRUE,
        'default' => '',
        'description' => 'The name of the event on which the configuration should be triggered.',
      ),
    ),
    'primary key' => array('id', 'event'),
    'foreign keys' => array(
      'table' => 'rules_config',
      'columns' => array('id' => 'id'),
    ),
  );
  $schema['rules_tags'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The primary identifier of the configuration.',
      ),
      'tag' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'description' => 'The tag string associated with this configuration',
      ),
    ),
    'primary key' => array('id', 'tag'),
    'foreign keys' => array(
      'table' => 'rules_config',
      'columns' => array('id' => 'id'),
    ),
  );
  $schema['rules_dependencies'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The primary identifier of the configuration.',
      ),
      'module' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'description' => 'The name of the module that is required for the configuration.',
      ),
    ),
    'primary key' => array('id', 'module'),
    'indexes' => array(
      'module' => array('module'),
    ),
    'foreign keys' => array(
      'table' => 'rules_config',
      'columns' => array('id' => 'id'),
    ),
  );
  $schema['cache_rules'] = drupal_get_schema_unprocessed('system', 'cache');
  $schema['cache_rules']['description'] = 'Cache table for the rules engine to store configured items.';
  return $schema;
}

/**
 * Upgrade from Rules 6.x-1.x to 7.x.
 */
function rules_update_7200() {
  // Create the new db tables first.
  $schema['rules_config'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'The internal identifier for any configuration.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'description' => 'The name of the configuration.',
      ),
      'label' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'description' => 'The label of the configuration.',
        'default' => 'unlabeled',
      ),
     'plugin' => array(
        'type' => 'varchar',
        'length' => 127,
        'not null' => TRUE,
        'description' => 'The name of the plugin of this configuration.',
      ),
      'active' => array(
        'description' => 'Boolean indicating whether the configuration is active. Usage depends on how the using module makes use of it.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 1,
      ),
      'weight' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => 'Weight of the configuration. Usage depends on how the using module makes use of it.',
      ),
      'status' => array(
        'type' => 'int',
        'not null' => TRUE,
        // Set the default to ENTITY_CUSTOM without using the constant as it is
        // not safe to use it at this point.
        'default' => 0x01,
        'size' => 'tiny',
        'description' => 'The exportable status of the entity.',
      ),
      'module' => array(
        'description' => 'The name of the providing module if the entity has been defined in code.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => FALSE,
      ),
      'data' => array(
        'type' => 'blob',
        'size' => 'big',
        'not null' => FALSE,
        'serialize' => TRUE,
        'description' => 'Everything else, serialized.',
      ),
    ),
    'primary key' => array('id'),
    'unique keys' => array(
      'name' => array('name'),
    ),
  );
  $schema['rules_trigger'] = array(
    'fields' => array(
      'id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The primary identifier of the configuration.',
      ),
      'event' => array(
        'type' => 'varchar',
        'length' => '127',
        'not null' => TRUE,
        'default' => '',
        'description' => 'The name of the event on which the configuration should be triggered.',
      ),
    ),
    'primary key' => array('id', 'event'),
    'foreign keys' => array(
      'table' => 'rules_config',
      'columns' => array('id' => 'id'),
    ),
  );
  db_create_table('rules_config', $schema['rules_config']);
  db_create_table('rules_trigger', $schema['rules_trigger']);
  // The cache table already exists, but changed. So re-create it.
  db_drop_table('cache_rules');
  $schema['cache_rules'] = drupal_get_schema_unprocessed('system', 'cache');
  $schema['cache_rules']['description'] = 'Cache table for the rules engine to store configured items.';
  db_create_table('cache_rules', $schema['cache_rules']);
  // Remove deprecated variables.
  variable_del('rules_inactive_sets');
  variable_del('rules_show_fixed');
  variable_del('rules_hide_token_message');
  variable_del('rules_counter');

  return t('The database tables for Rules 2.x have been created. The old tables from Rules 1.x are still available and contain your rules, which are not updated yet.');
}

/**
 * Add in the exportable entity db columns as required by the entity API.
 */
function rules_update_7201() {
  // Previously this was update 7200, so check whether we need to run it really.
  // The update has been moved as 7200 needs to be the 6.x-7.x upgrade.
  if (!db_field_exists('rules_config', 'status')) {
    db_add_field('rules_config', 'status', array(
      'type' => 'int',
      'not null' => TRUE,
      'default' => ENTITY_CUSTOM,
      'size' => 'tiny',
      'description' => 'The exportable status of the entity.',
    ));
    // The module column did already exist before.
  }
}

/**
 * Add an index for the rules configuration plugin column.
 */
function rules_update_7202() {
  db_add_index('rules_config', 'plugin', array('plugin'));
}

/**
 * Fix the length of the rules_config.name column.
 */
function rules_update_7203() {
  db_drop_unique_key('rules_config', 'name');
  $keys = array(
    'unique keys' => array(
      'name' => array('name'),
    ),
  );
  db_change_field('rules_config', 'name', 'name', array(
    'type' => 'varchar',
    'length' => '64',
    'not null' => TRUE,
    'description' => 'The name of the configuration.',
  ), $keys);
}

/**
 * Add a table for rules-config tags.
 */
function rules_update_7204() {
  if (!db_table_exists('rules_tags')) {
    $schema['rules_tags'] = array(
      'fields' => array(
        'id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
          'description' => 'The primary identifier of the configuration.',
        ),
        'tag' => array(
          'type' => 'varchar',
          'length' => '255',
          'not null' => TRUE,
          'description' => 'The tag string associated with this configuration',
        ),
      ),
      'primary key' => array('id', 'tag'),
      'foreign keys' => array(
        'table' => 'rules_config',
        'columns' => array('id' => 'id'),
      ),
    );
    db_create_table('rules_tags', $schema['rules_tags']);
  }
}

/**
 * Add the rules_dependencies table and the rules_config.dirty column.
 */
function rules_update_7205() {
  if (!db_table_exists('rules_dependencies')) {
    $schema['rules_dependencies'] = array(
      'fields' => array(
        'id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
          'description' => 'The primary identifier of the configuration.',
        ),
        'module' => array(
          'type' => 'varchar',
          'length' => '255',
          'not null' => TRUE,
          'description' => 'The name of the module that is required for the configuration.',
        ),
      ),
      'primary key' => array('id', 'module'),
      'indexes' => array(
        'module' => array('module'),
      ),
      'foreign keys' => array(
        'table' => 'rules_config',
        'columns' => array('id' => 'id'),
      ),
    );
    db_create_table('rules_dependencies', $schema['rules_dependencies']);
  }
  if (!db_field_exists('rules_config', 'dirty')) {
    db_add_field('rules_config', 'dirty', array(
      'type' => 'int',
      'not null' => TRUE,
      'default' => 0,
      'size' => 'tiny',
    ));
  }
}

/**
 * Flush all caches.
 */
function rules_update_7206() {
  // The update system is going to flush all caches anyway, so nothing to do.
}

/**
 * Flush all caches.
 */
function rules_update_7207() {
  // The update system is going to flush all caches anyway, so nothing to do.
}

/**
 * Flush all caches to update the data_is_empty condition info.
 */
function rules_update_7208() {
  // The update system is going to flush all caches anyway, so nothing to do.
}

/**
 * Creates a flag that enables a permission for using components.
 */
function rules_update_7209() {
  // Create a access exposed flag column.
  db_add_field('rules_config', 'access_exposed', array(
    'type' => 'int',
    'not null' => TRUE,
    'default' => 0,
    'size' => 'tiny',
    'description' => 'Whether to use a permission to control access for using components.',
  ));
}

/**
 * Deletes the unused rules_empty_sets variable.
 */
function rules_update_7210() {
  variable_del('rules_empty_sets');
}

/**
 * Creates the "owner" column.
 */
function rules_update_7211() {
  // Create a owner column.
  if (!db_field_exists('rules_config', 'owner')) {
    db_add_field('rules_config', 'owner', array(
      'description' => 'The name of the module via which the rule has been configured.',
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => 'rules',
    ));
  }
}

/**
 * Make sure registry gets rebuilt to avoid upgrade troubles.
 */
function rules_update_7212() {
  // Make sure module information gets refreshed and registry is rebuilt.
  drupal_static_reset('system_rebuild_module_data');
  registry_rebuild();
}

/**
 * Recover the "owner" property for broken configurations.
 */
function rules_update_7213() {
  $rows= db_select('rules_config', 'c')
    ->fields('c')
    ->condition('status', ENTITY_OVERRIDDEN)
    ->condition('owner', 'rules', '<>')
    ->execute()
    ->fetchAllAssoc('id');

  foreach ($rows as $id => $row) {
    if ($row->module == $row->owner) {
      db_update('rules_config')
        ->condition('id', $id)
        ->fields(array('owner' => 'rules'))
        ->execute();
    }
  }
}

/**
 * Switch out the rules_event_whitelist variable for a cache equivalent.
 */
function rules_update_7214() {
  // Set new event_whitelist cache cid.
  rules_set_cache('rules_event_whitelist', variable_get('rules_event_whitelist', array()));
  // Delete old conf variable.
  variable_del('rules_event_whitelist');
  // Avoid any missing class errors.
  registry_rebuild();
  // Clear and rebuild Rules caches.
  // See: rules_admin_settings_cache_rebuild_submit.
  rules_clear_cache();
  rules_get_cache();
  _rules_rebuild_component_cache();
  RulesEventSet::rebuildEventCache();
}

/**
 * Add an index for retrieving active config of a certain plugin.
 */
function rules_update_7215() {
  if (db_index_exists('rules_config', 'plugin')) {
    db_drop_index('rules_config', 'plugin');
  }
  db_add_index('rules_config', 'plugin', array('plugin', 'active'));
}
