<?php
// $Id$

/**
 * Implementation of hook_install().
 */
function poll_install() {
  // Create tables.
  drupal_install_schema('poll');
}

/**
 * Implementation of hook_uninstall().
 */
function poll_uninstall() {
  // Remove tables.
  drupal_uninstall_schema('poll');
}

/**
 * Implementation of hook_schema().
 */
function poll_schema() {
  $schema['poll'] = array(
    'description' => t('Stores poll-specific information for poll nodes.'),
    'fields' => array(
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t("The poll's {node}.nid."),
      ),
      'runtime' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The number of seconds past {node}.created during which the poll is open.'),
      ),
      'active' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Boolean indicating whether or not the poll is open.'),
      ),
    ),
    'primary key' => array('nid'),
  );

  $schema['poll_choices'] = array(
    'description' => t('Stores information about all choices for all {poll}s.'),
    'fields' => array(
      'chid' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => t('Unique identifier for a poll choice.'),
      ),
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The {node}.nid this choice belongs to.'),
      ),
      'chtext' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => t('The text for this choice.'),
      ),
      'chvotes' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The total number of votes this choice has received by all users.'),
      ),
      'chorder' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The sort order of this choice among all choices for the same node.'),
      ),
    ),
    'indexes' => array(
      'nid' => array('nid'),
    ),
    'primary key' => array('chid'),
  );

  $schema['poll_votes'] = array(
    'description' => t('Stores per-{users} votes for each {poll}.'),
    'fields' => array(
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => t('The {poll} node this vote is for.'),
      ),
      'uid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The {users}.uid this vote is from unless the voter was anonymous.'),
      ),
      'chorder' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => -1,
        'description' => t("The {users}'s vote for this poll."),
      ),
      'hostname' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => t('The IP address this vote is from unless the voter was logged in.'),
      ),
    ),
    'primary key' => array('nid', 'uid', 'hostname'),
    'indexes' => array(
      'hostname' => array('hostname'),
      'uid' => array('uid'),
    ),
  );

  return $schema;
}