<?php

/**

 * @file

 * Install, update and uninstall functions for the aggregator module.

 */

/**

 * Implements hook_uninstall().

 */

function aggregator_uninstall() {

  variable_del('aggregator_allowed_html_tags');

  variable_del('aggregator_summary_items');

  variable_del('aggregator_clear');

  variable_del('aggregator_category_selector');

  variable_del('aggregator_fetcher');

  variable_del('aggregator_parser');

  variable_del('aggregator_processors');

  variable_del('aggregator_teaser_length');

}

/**

 * Implements hook_schema().

 */

function aggregator_schema() {

  $schema['aggregator_category'] = array(

    'description' => 'Stores categories for aggregator feeds and feed items.',

    'fields' => array(

      'cid'  => array(

        'type' => 'serial',

        'not null' => TRUE,

        'description' => 'Primary Key: Unique aggregator category ID.',

      ),

      'title' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Title of the category.',

      ),

      'description' => array(

        'type' => 'text',

        'not null' => TRUE,

        'size' => 'big',

        'description' => 'Description of the category',

      ),

      'block' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'size' => 'tiny',

        'description' => 'The number of recent items to show within the category block.',

      )

    ),

    'primary key' => array('cid'),

    'unique keys' => array(

      'title' => array('title'),

    ),

  );

  $schema['aggregator_category_feed'] = array(

    'description' => 'Bridge table; maps feeds to categories.',

    'fields' => array(

      'fid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => "The feed's {aggregator_feed}.fid.",

      ),

      'cid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'The {aggregator_category}.cid to which the feed is being assigned.',

      )

    ),

    'primary key' => array('cid', 'fid'),

    'indexes' => array(

      'fid' => array('fid'),

    ),

    'foreign keys' => array(

      'aggregator_category' => array(

        'table' => 'aggregator_category',

        'columns' => array('cid' => 'cid'),

      ),

    ),

  );

  $schema['aggregator_category_item'] = array(

    'description' => 'Bridge table; maps feed items to categories.',

    'fields' => array(

      'iid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => "The feed item's {aggregator_item}.iid.",

      ),

      'cid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'The {aggregator_category}.cid to which the feed item is being assigned.',

      )

    ),

    'primary key' => array('cid', 'iid'),

    'indexes' => array(

      'iid' => array('iid'),

    ),

    'foreign keys' => array(

      'aggregator_category' => array(

        'table' => 'aggregator_category',

        'columns' => array('cid' => 'cid'),

      ),

    ),

  );

  $schema['aggregator_feed'] = array(

    'description' => 'Stores feeds to be parsed by the aggregator.',

    'fields' => array(

      'fid' => array(

        'type' => 'serial',

        'not null' => TRUE,

        'description' => 'Primary Key: Unique feed ID.',

      ),

      'title' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Title of the feed.',

      ),

      'url' => array(

        'type' => 'text',

        'not null' => TRUE,

        'description' => 'URL to the feed.',

      ),

      'refresh' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'How often to check for new feed items, in seconds.',

      ),

      'checked' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'Last time feed was checked for new items, as Unix timestamp.',

      ),

      'queued' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'Time when this feed was queued for refresh, 0 if not queued.',

      ),

      'link' => array(

        'type' => 'text',

        'not null' => TRUE,

        'description' => 'The parent website of the feed; comes from the <link> element in the feed.',

      ),

      'description' => array(

        'type' => 'text',

        'not null' => TRUE,

        'size' => 'big',

        'description' => "The parent website's description; comes from the <description> element in the feed.",

      ),

      'image' => array(

        'type' => 'text',

        'not null' => TRUE,

        'size' => 'big',

        'description' => 'An image representing the feed.',

      ),

      'hash' => array(

        'type' => 'varchar',

        'length' => 64,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Calculated hash of the feed data, used for validating cache.',

      ),

      'etag' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Entity tag HTTP response header, used for validating cache.',

      ),

      'modified' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'When the feed was last modified, as a Unix timestamp.',

      ),

      'block' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'size' => 'tiny',

        'description' => "Number of items to display in the feed's block.",

      )

    ),

    'primary key' => array('fid'),

    'indexes' => array(

      'url'  => array(array('url', 255)),

      'queued' => array('queued'),

    ),

    'unique keys' => array(

      'title' => array('title'),

    ),

  );

  $schema['aggregator_item'] = array(

    'description' => 'Stores the individual items imported from feeds.',

    'fields' => array(

      'iid'  => array(

        'type' => 'serial',

        'not null' => TRUE,

        'description' => 'Primary Key: Unique ID for feed item.',

      ),

      'fid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'The {aggregator_feed}.fid to which this item belongs.',

      ),

      'title' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Title of the feed item.',

      ),

      'link' => array(

        'type' => 'text',

        'not null' => TRUE,

        'description' => 'Link to the feed item.',

      ),

      'author' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Author of the feed item.',

      ),

      'description' => array(

        'type' => 'text',

        'not null' => TRUE,

        'size' => 'big',

        'description' => 'Body of the feed item.',

      ),

      'timestamp' => array(

        'type' => 'int',

        'not null' => FALSE,

        'description' => 'Posted date of the feed item, as a Unix timestamp.',

      ),

      'guid' => array(

        'type' => 'text',

        'not null' => TRUE,

        'description' => 'Unique identifier for the feed item.',

      )

    ),

    'primary key' => array('iid'),

    'indexes' => array(

      'fid' => array('fid'),

      'timestamp' => array('timestamp'),

    ),

    'foreign keys' => array(

      'aggregator_feed' => array(

        'table' => 'aggregator_feed',

        'columns' => array('fid' => 'fid'),

      ),

    ),

  );

  return $schema;

}

/**

 * @addtogroup updates-6.x-to-7.x

 * @{

 */

/**

 * Add hash column to aggregator_feed table.

 */

function aggregator_update_7000() {

  db_add_field('aggregator_feed', 'hash', array('type' => 'varchar', 'length' => 64, 'not null' => TRUE, 'default' => ''));

}

/**

 * Add aggregator teaser length to settings from old global default teaser length

 */

function aggregator_update_7001() {

  variable_set('aggregator_teaser_length', variable_get('teaser_length'));

}

/**

 * Add queued timestamp.

 */

function aggregator_update_7002() {

  db_add_field('aggregator_feed', 'queued', array(

    'type' => 'int',

    'not null' => TRUE,

    'default' => 0,

    'description' => 'Time when this feed was queued for refresh, 0 if not queued.',

  ));

  db_add_index('aggregator_feed', 'queued', array('queued'));

}

/**

 * @} End of "addtogroup updates-6.x-to-7.x"

 */

/**

 * @addtogroup updates-7.x-extra

 * @{

 */

/**

 * Increase the length of {aggregator_feed}.url.

 */

function aggregator_update_7003() {

  db_drop_unique_key('aggregator_feed', 'url');

  db_change_field('aggregator_feed', 'url', 'url', array('type' => 'text', 'not null' => TRUE, 'description' => 'URL to the feed.'));

  db_change_field('aggregator_feed', 'link', 'link', array('type' => 'text', 'not null' => TRUE, 'description' => 'The parent website of the feed; comes from the <link> element in the feed.'));

  db_change_field('aggregator_item', 'link', 'link', array('type' => 'text', 'not null' => TRUE, 'description' => 'Link to the feed item.'));

  db_change_field('aggregator_item', 'guid', 'guid', array('type' => 'text', 'not null' => TRUE, 'description' => 'Unique identifier for the feed item.'));

  db_add_index('aggregator_feed', 'url', array(array('url', 255)));

}

/**

 * Add index on timestamp.

 */

function aggregator_update_7004() {

  if (!db_index_exists('aggregator_item', 'timestamp')) {

    db_add_index('aggregator_item', 'timestamp', array('timestamp'));

  }

}

/**

 * @} End of "addtogroup updates-7.x-extra"

 */