libhours.module

<?php

module_load_include('inc', 'libhours', 'libhours.admin');

// add zend gdata library directory to the php include path
$gdata_library_path = dirname(__FILE__) . '/ZendGdata/library';
set_include_path(get_include_path() . PATH_SEPARATOR . $gdata_library_path);

require_once 'Zend/Loader.php';
Zend_Loader::loadClass('Zend_Gdata');
Zend_Loader::loadClass('Zend_Uri_Http');
Zend_Loader::loadClass('Zend_Gdata_Calendar');
Zend_Loader::loadClass('Zend_Gdata_ClientLogin');
Zend_Loader::loadClass('Zend_Gdata_Calendar_EventQuery');

/**
 * Implementation of hook_menu()
 */
function libhours_menu() {
  $items['admin/settings/libhours'] = array(
    'title' => 'Library Hours',
    'description' => t('Configure the library hours module.'),
    'page callback' => 'drupal_get_form',
    'access callback' => 'user_access',
    'access arguments' => array('administer libhours'),
    'page arguments' => array('libhours_admin_settings'),
    'type' => MENU_NORMAL_ITEM
  );
  $items['libhours'] = array(
    'title' => t('Library Hours'),
    'description' => t('Library Hours'),
    'page callback' => 'libhours_page',
    'access callback' => 'user_access',
    'access arguments' => array('view libhours'),
    'type' => MENU_CALLBACK
  );
  return $items;
}

/**
 * Implementation of hook_perm()
 */
function libhours_perm() {
  return array('view libhours', 'administer libhours');
}

/**
 * Implementation of hook_theme()
 */
function libhours_theme() {
  return array(
    'libhours_block' => array(
      'arguments' => array(
        'items' => NULL
      )
    ),
    'libhours_page' => array(
      'arguments' => array(
        'items' => NULL
      ),
      'template' => 'libhours_page'
    )
  );
}

/**
 * Authenticate with Google
 */
function libhours_gdata_authenticate() {
  $user = variable_get('libhours_user', '');
  if (empty($user)) {
    watchdog('libhours', 'Google Calendar user is not set. Please set it in the Libhours settings page.');
  }
  $pass = variable_get('libhours_pass', '');
  if (empty($pass)) {
    watchdog('libhours', 'Google Calendar password is not set. Please set it in the Libhours settings page.');
  }
  $service = Zend_Gdata_Calendar::AUTH_SERVICE_NAME;
  return Zend_Gdata_ClientLogin::getHttpClient($user, $pass, $service);
}

/**
 * Return events
 * @param $startMin   an RFC 3339 timestamp for the start of the date range to retrieve
 * @param $startMax   an RFC 3339 timestamp for the end of the date range to retrieve
 * @param $text       a string which will be used in a fulltext search of the calendar
 */
function libhours_get_events($startMin = null, $startMax = null, $text = '') {
  $calendar = new Zend_Gdata_Calendar(libhours_gdata_authenticate());
  $query = new Zend_Gdata_Calendar_EventQuery();
  $query->setUser(variable_get('libhours_id', 'default'));
  $query->setVisibility('public');
  $query->setProjection('full');
  $query->setOrderBy('starttime');
  $query->setSortOrder('ascending');
  $query->setStartMin($startMin);
  $query->setStartMax($startMax);
  // allow for fulltext queries
  if (!empty($text)) {
    $query->setQuery($text);
  }
  $eventFeed = $calendar->getCalendarEventFeed($query);
  return $eventFeed;
}

/**
 * Display hours in a page
 */
function libhours_page() {
  $events = libhours_get_events(date(DATE_ATOM, time() - 86400), date(DATE_ATOM, time() + 86400*6));
  foreach($events as $event) {
    $items[$event->title->text][date('Y-m-d', strtotime($event->when[0]->startTime))] = array(
      'isodate' => date('Y-m-d', strtotime($event->when[0]->startTime)),
      'dayOfWeek' => date('l', strtotime($event->when[0]->startTime)),
      'timestamp' => strtotime($event->when[0]->startTime),
      'startTime' => date('g:i A', strtotime($event->when[0]->startTime)),
      'endTime' => date('g:i A', strtotime($event->when[0]->endTime))
    );
  }
  return theme('libhours_page', $items);
}

/**
 * Implementation of hook_block()
 */
function libhours_block($op = 'list', $delta = 0, $edit = array()) {
  switch($op) {
    case "list":
      $blocks[0]['info'] = t('Libhours block');
      $blocks[0]['cache'] = BLOCK_NO_CACHE;
      return $blocks;
    case "view":
      $events = libhours_get_events(date(DATE_ATOM, time() - 86400), date(DATE_ATOM, time() + 86400));
      $items = array();
      foreach($events as $event) {
        $items[$event->title->text][] = array(
          'startTime' => date('g:i A', strtotime($event->when[0]->startTime)),
          'endTime' => date('g:i A', strtotime($event->when[0]->endTime))
        );
      }
      $block['subject'] = t('Hours for '. date("D. F j"));
      $block['content'] = theme('libhours_block', $items);
      return $block;
  }
}

/**
* Theme the library hours block
*/
function theme_libhours_block($items) {
  foreach($items as $key => $item) {
    $output .= "<h2>". $key ."</h2>";
    $output .= $item[0]['startTime'] ." - ". $item[0]['endTime'] ."<br />";
  }
  return $output;
}