<?php
// $Id:

/// Hook Implementations 

/**
* Display help and module information
* @param path which path of the site we're displaying help
* @param arg array that holds the current path as would be returned from arg() function
* @return help text for the path
*/
function prowl_user_help($path, $arg) {
  $output = '';  //declare your output variable
  switch ($path) {
    case "admin/help#prowl_user":
      $output = '<p>'.  t("This module allows users to associate a Prowl API key with their account.") .'</p>';
      break;
  }
  return $output;
} // function prowl_user_help

/**
 * Implementation of hook_menu()
 */
function prowl_user_menu() {
  $items = array();
  // autocomplete for users with prowl api key filled in
  $items['prowl/autocomplete_user'] = array(
    'title' => 'Autocomplete Prowl Users',
    'page callback' => 'prowl_user_autocomplete_user',
    'access callback' => TRUE,
    'access arguments' => array('Administer prowl notifications'),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implementation of hook_action_info().
 */
function prowl_user_action_info() {
  return array(
    'prowl_user_actions_user_notification_action' => array(
      'type' => 'system',
      'description' => t('Send a tokenized prowl notification to a drupal user.'),
      'configurable' => TRUE,
      'hooks' => array(
        'nodeapi' => array('view', 'insert', 'update', 'delete'),
        'comment' => array('view', 'insert', 'update', 'delete'),
        'user' => array('view', 'insert', 'update', 'delete', 'login'),
        'taxonomy' => array('insert', 'update', 'delete'),
      ),
    ),
  );
}

/**
 * Return a form definition so the Send notification to a drupal user action can be configured.
 *
 * @param $context
 *   Default values (if we are editing an existing action instance).
 * @return
 *   Form definition.
 */
function prowl_user_actions_user_notification_action_form($context) {
  if (!isset($context['event'])) {
    $context['event'] = '';
  }
  if (!isset($context['message'])) {
    $context['message'] = '';
  }
  if (!isset($context['priority'])) {
    $context['priority'] = 0;
  }
  if (!isset($context['user'])) {
    $context['user'] = '';
  }
  if (!isset($context['send_test'])) {
    $context['send_test'] = False;
  }

  $form['user'] = array(
    '#type' => 'textfield',
    '#title' => t('User Name'),
    '#autocomplete_path' => 'prowl/autocomplete_user',
    '#default_value' => $context['user'],
    '#size' => '20',
    '#maxlength' => '60',
    '#description' => t('The Drupal username of the user to which to send the notification (only users with an API key set will autocomplete).'),
  );
  $form['send_test'] = array(
    '#type' => 'checkbox',
    '#title' => t('Send a test notification when submitting this form.'),
  );
  $form['event'] = array(
    '#type' => 'textfield',
    '#title' => t('Event'),
    '#default_value' => $context['event'],
    '#size' => '20',
    '#maxlength' => '1024',
    '#description' => t('The message event type.'),
  );
  $form['message'] = array(
    '#type' => 'textarea',
    '#title' => t('Message'),
    '#default_value' => $context['message'],
    '#cols' => '80',
    '#rows' => '20',
    '#description' => t('The message that should be sent.'),
  );
  $form['priority'] = array(
    '#type' => 'select',
    '#title' => t('Message priority level'),
    '#default_value' => $context['priority'],
    '#options' => array(
      -2 => t('Very low'),
      -1 => t('Low'),
      0 => t('Moderate'),
      1 => t('High'),
      2 => t('Emergency'),
    ),
    '#description' => t('Set the priority level of this notification'),
  );

  $form['help'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#title' => t('Placeholder tokens'),
    '#description' => t("The following placeholder tokens can be used in to generate the URL path. Some tokens may not be available, depending on the context in which the action is triggered."),
  );

  $form['help']['tokens'] = array(
    '#value' => theme('token_help', 'all'),
  );

  return $form;
}

/**
 * Submit handler for prowl_user_actions_user_notification_action_form()
 */
function prowl_user_actions_user_notification_action_submit($form, $form_state) {
  $form_values = $form_state['values'];
  // Process the HTML form to store configuration. The keyed array that
  // we return will be serialized to the database.
  $params = array(
    'event'   => $form_values['event'],
    'message'   => $form_values['message'],
    'priority'   => $form_values['priority'],
    'user'   => $form_values['user'],
  );
  if ($form_values['send_test']) {
    if (prowl_send_user_notification_test($form_values['user'])) {
      drupal_set_message(t('Sent test notification to user: "%user"', array('%user' => $form_values['user'])), 'status');
    } else {
      drupal_set_message(t('There was an error when attempting to send a notification to user: "%user"', array('%user' => $form_values['user'])), 'warning');
    }
  }
  return $params;
}

function prowl_user($op, &$edit, &$account)
{
  switch($op)
  {
    case 'register':
      $form['prowl_info'] = array(
        '#type' => 'fieldset', 
        '#title' => t('Prowl settings'), 
        '#weight' => -1, 
        '#collapsible' => TRUE, 
        '#collapsed' => FALSE,
      );
      $form['prowl_info']['prowl_api_key'] = array(
        '#type' => 'textfield',
        '#title' => t('API key for your prowl account.'),
        '#size' => 40,
        '#maxlength' => 40,
        '#description' => t("Go to your <a href='https://prowl.weks.net/settings.php'>prowl settings page</a> to view/generate your API key."),
        '#required' => False,
        // '#prefix' => '<h3 class="legend">Employee Search Preference</h3>',
      ); 
      return $form;
      break;
    case 'form':
      //load up the user in question
      $usr = user_load(array('uid' => $account->uid));
      // see if picture is listed
      $data = unserialize($usr->data); 
      $attr = (!empty($data['prowl_api_key'])) ? $data['prowl_api_key'] : '';
      $form['prowl_info'] = array(
        '#type' => 'fieldset', 
        '#title' => t('Prowl settings'), 
        '#weight' => -1, 
        '#collapsible' => TRUE, 
        '#collapsed' => FALSE,
      );
      $form['prowl_info']['prowl_api_key'] = array(
        '#type' => 'textfield',
        '#title' => t('API key for your prowl account.'),
        '#default_value' => $attr,
        '#size' => 40,
        '#maxlength' => 40,
        '#description' => t("Go to your <a href='https://prowl.weks.net/settings.php'>prowl settings page</a> to view/generate your API key."),
        '#required' => False,
        // '#attributes' => $attr,
      ); 
      return $form;
      break;
    }
}

/// Internal/API Functions

/**
 * Implementation of a configurable Drupal action.
 * Sends a configurable prowl notification to the admin user's phone
 * @return boolean success
 */
function prowl_actions_user_notification_action(&$object, $context = array()) {
  $context['global'] = NULL;
  if (is_numeric($context['comment']->nid) && empty($context['node'])) {
    $context['node'] = node_load(array('nid' => $context['comment']->nid));
  }
  if (!empty($context['node']) && empty($context['user'])) {
    $context['user'] = user_load(array('uid' => $context['node']->uid));
  }
  $context['message'] = token_replace_multiple($context['message'], $context);
  return prowl_send_user_notification($name, $context['message'], $context['event'], $context['priority']);
}

/**
 * Send prowl notification to a site user
 * @return boolean success
 */
function prowl_send_user_notification($name, $message, $event, $priority = PROWL_MODERATE, $application = PROWL_APPLICATION) {
  $success = True;
  // get apikey from DB - doing a query ourselves to avoid the performance hit of a call to user_load()
  $apikey = '';
  $result = db_query("SELECT data FROM {users} WHERE name LIKE '%s'", $name);
  if ($user_data = db_fetch_object($result)) {
    $data = unserialize($user_data->data);
    if (ctype_alnum($data['prowl_api_key']) && (strlen($data['prowl_api_key']) == 40)) {
      $apikey = $data['prowl_api_key'];
    }
  }
  if (isset($apikey) && strlen($apikey) == 40) {
    $prowl = new Prowl($apikey);
    $prowl->push(array(
      'application' => $application,
      'event' => $event,
      'description' => $message,
      'priority' => $priority,
    ));
    if (PROWL_DEBUG) {
      watchdog('prowl', 'api key: %apikey | priority: %priority | message: %message | event: %event | application: %application', array('%apikey' => $apikey, '%message' => $message, '%priority' => $priority, '%event' => $event, '%application' => $application), WATCHDOG_ERROR);
    }
    // log errors (if any)
    if ($prowl_errors = $prowl->getError()) {
      if (strpos($prowl_errors, 'Request Successful') === False) {
        watchdog('prowl', 'Push Notification Error: %error', array('%error' => $prowl_errors), WATCHDOG_ERROR);
        $success = False;
      }
    }
  } else {
    $success = False;
  }
  return $success;
} // prowl_send_user_notification()

/**
 * Send test prowl notification to given API key
 * @return boolean success
 */
function prowl_send_user_notification_test($name) {
    return prowl_send_user_notification($name, 'mic check 1 2', 'notification test');
} // prowl_send_user_notification_test()

/**
 * Autocomplete function for users with Prowl API keys defined
 * @param $string
 *  Search String
 * @return string
 */
function prowl_user_autocomplete_user($string = '') {
  if ($string != '') {
    $matches = array();
    $result = db_query("SELECT name, data FROM {users} WHERE LOWER(name) LIKE LOWER('%s%%')", $string);
    while ($name = db_fetch_object($result)) {
      $data = unserialize($name->data);
      if (ctype_alnum($data['prowl_api_key']) && (strlen($data['prowl_api_key']) == 40)) {
        $matches[$name->name] = $name->name;
      }
    }
    print drupal_to_js($matches);
  } 
} // prowl_user_autocomplete_user()