<?php

/**
 * 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' => 'Stores poll-specific information for poll nodes.',
    'fields' => array(
      'nid'     => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => "The poll's {node}.nid."
        ),
      'runtime' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => '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' => 'Boolean indicating whether or not the poll is open.',
        ),
      ),
    'primary key' => array('nid'),
    );

  $schema['poll_choices'] = array(
    'description' => 'Stores information about all choices for all {poll}s.',
    'fields' => array(
      'chid'    => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'Unique identifier for a poll choice.',
        ),
      'nid'     => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => 'The {node}.nid this choice belongs to.',
        ),
      'chtext'  => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => 'The text for this choice.',
        ),
      'chvotes' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'The total number of votes this choice has received by all users.',
        ),
      'chorder' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => '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' => 'Stores per-{users} votes for each {poll}.',
    'fields' => array(
      'nid'      => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The {poll} node this vote is for.',
        ),
      'uid'      => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => 'The {users}.uid this vote is from unless the voter was anonymous.',
        ),
      'chorder'  => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => -1,
        'description' => "The {users}'s vote for this poll.",
        ),
      'hostname' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => '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;
}