<?php
// $Id: user_relationship_privatemsg.module,v 1.2.2.9 2009-07-06 09:31:46 alexk Exp $

if (!variable_get('user_relationship_privatemsg_ops', FALSE)) {
  variable_set('user_relationship_privatemsg_ops', array('request', 'cancel', 'approve', 'disapprove', 'remove'));
}

require_once('user_relationship_privatemsg_defaults.inc');

/**
 * Sends mail to the appropriate user
 *
 * @param $op
 *    string of action to take [request|delete|cancel|approve|disapprove|remove]
 *
 * @param $relationship
 *    object of the relationship
 *
 */
function user_relationship_privatemsg_send($op, $relationship) {
  if (($op == 'request' && $relationship->approved) || !variable_get("user_relationship_privatemsg_send_{$op}", TRUE)) {
    return;
  }
  !$relationship->requester ? $relationship->requester = user_load(array('uid' => $relationship->requester_id)) : NULL;
  !$relationship->requestee ? $relationship->requestee = user_load(array('uid' => $relationship->requestee_id)) : NULL;

  $requester = $relationship->requester;
  $requestee = $relationship->requestee;

  $send_to = array();
  switch ($op) {
  case 'request':
  case 'cancel':
    $message_to[] = $requestee;
    break;

  case 'approve':
  case 'disapprove':
    $message_to[] = $requester;
    break;

  case 'remove':
    $message_to[] = $requester;
    if (!$relationship->is_oneway) {
      $message_to[] = $requestee;
    }
    break;

  default:
    return;
  }

  $sender = user_load(array('uid' => variable_get('user_relationship_privatemsg_sender', 1)));
  foreach ($message_to as $target) {
    // This prevents possible "You cannot contact" messages from the Privatemsg module
    if ($sender->uid == $target->uid) { continue; }

    $replacements = user_relationship_privatemsg_replacements($relationship);
    if ($op == 'remove') {
      $replacements['@profile_uid'] = $target->uid;
    }

    $message_function = "user_relationship_privatemsg_{$op}_default";
    $subject = t(variable_get("user_relationship_privatemsg_{$op}_subject", constant(strtoupper("user_relationship_privatemsg_{$op}_subject"))), $replacements);
    $message = t(variable_get("user_relationship_privatemsg_{$op}_message", $message_function()), $replacements);

    _privatemsg_send($sender, $target, $subject, $message, FILTER_FORMAT_DEFAULT, 0, 'user-relationship-notification');
  }
}

/**
 * hook_form_alter()
 */
function user_relationship_privatemsg_form_alter($form_id, &$form) {
  global $user;

  switch ($form_id) {
  case 'privatemsg_new':
    $relationships = user_relationships_load(array('requester_id' => $user->uid), FALSE, 'requestee_id', NULL, NULL, TRUE);

    $contacts = array();
    foreach ($relationships as $relationship_list) {
      foreach ($relationship_list as $relationship) {
        $contacts[$relationship->plural_name][$relationship->requestee_name] = $relationship->requestee_name;
      }
    }

    $form['quick']['#options'] = array_merge($form['quick']['#options'], $contacts);
    break;

  case 'privatemsg_contacts_form':
    $relationships = user_relationships_load(array('requester_id' => $user->uid), FALSE, 'rid', NULL, NULL, TRUE);

    foreach ($relationships as $relationship) {
      $form['contacts'][$relationship->requestee_id]['selected'] = array(
        '#type' => 'checkbox',
      );
      $form['contacts'][$relationship->requestee_id]['name'] = array(
        '#type' => 'value',
        '#value' => $relationship->requestee_name,
      );
      $form['contacts'][$relationship->requestee_id]['contact'] = array(
        '#type' => 'value',
        '#value' => theme('privatemsg_username', (object)array('uid' => $relationship->requestee_id, 'name' => $relationship->requestee_name)),
      );
      $form['contacts'][$relationship->requestee_id]['operations'] = array(
        '#type' => 'value',
        '#value' => l(t('Write private message'), 'privatemsg/new/'. $relationship->requestee_id),
      );
    }

    if ($relationships) {
      $form['selected'] = array(
        '#type' => 'fieldset',
        '#collapsible' => FALSE,
        '#collapsed' => FALSE,
        '#prefix' => '<div class="container-inline">',
        '#suffix' => '</div>',
      );
      $form['selected']['label'] = array(
        '#value' => '<div><strong>'. t('With selected:') .'</strong> &nbsp; &nbsp;</div>',
      );
      $form['selected']['write_message'] = array(
        '#type' => 'submit',
        '#value' => t('Write private message'),
      );
    }
    break;

  case 'user_relationships_settings':
    $relationship = user_relationships_types_load();
    $relationship = array_pop($relationship);

    $form['privatemsg'] = array(
      '#type'   => 'fieldset',
      '#title'  => t('Privatemsg Options'),
      '#weight' => -10,
    );
      $sender = user_load(array('uid' => variable_get('user_relationship_privatemsg_sender', 1)));
      $form['privatemsg']['user_relationship_privatemsg_sender'] = array(
        '#type'               => 'textfield',
        '#title'              => t('Sender'),
        '#size'               => 50,
        '#maxlength'          => 64,
        '#required'           => TRUE,
        '#default_value'      => $sender->name,
        '#autocomplete_path'  => 'privatemsg/autocomplete',
      );
      $user_relationship_privatemsg_ops = variable_get('user_relationship_privatemsg_ops', array());
      foreach ($user_relationship_privatemsg_ops as $op) {
        $message_function = "user_relationship_privatemsg_{$op}_default";
        $form['privatemsg'][$op] = array(
          '#type'         => 'fieldset',
          '#title'        => t(ucfirst($op)),
          '#collapsible'  => TRUE,
          '#collapsed'    => TRUE
        );
          $form['privatemsg'][$op]["user_relationship_privatemsg_send_{$op}"] = array(
            '#type'           => 'checkbox',
            '#title'          => t('Send @op messages', array('@op' => $op)),
            '#default_value'  => variable_get("user_relationship_privatemsg_send_{$op}", TRUE),
          );
          $form['privatemsg'][$op]["user_relationship_privatemsg_{$op}_subject"] = array(
            '#type'           => 'textfield',
            '#title'          => t('@Op relationship email subject', array('@Op' => ucfirst($op))),
            '#default_value'  => variable_get("user_relationship_privatemsg_{$op}_subject", constant(strtoupper("user_relationship_privatemsg_{$op}_subject"))),
          );
          $form['privatemsg'][$op]["user_relationship_privatemsg_{$op}_message"] = array(
            '#type'           => 'textarea',
            '#title'          => t('@Op relationship email message', array('@Op' => ucfirst($op))),
            '#default_value'  => variable_get("user_relationship_privatemsg_{$op}_message", $message_function()),
            '#description'    => t('Replacement strings are: %macros', array('%macros' => implode(', ', array_keys(user_relationship_privatemsg_replacements($relationship))))),
          );
      }
    break;
  }
}

/**
 * hook_user_relationships()
 */
function user_relationship_privatemsg_user_relationships($type, &$relationship, $category = NULL) {
  if (in_array($type, array('post-save', 'delete'))) {
    user_relationship_privatemsg_send($category, $relationship);
  }
}