mods/social/groups/edit.php

   1 <?php
   2 /****************************************************************/
   3 /* ATutor                                                                                                               */
   4 /****************************************************************/
   5 /* Copyright (c) 2002-2009                                                                              */
   6 /* Adaptive Technology Resource Centre / University of Toronto  */
   7 /* http://atutor.ca                                                                                             */
   8 /*                                                              */
   9 /* This program is free software. You can redistribute it and/or*/
  10 /* modify it under the terms of the GNU General Public License  */
  11 /* as published by the Free Software Foundation.                                */
  12 /****************************************************************/
  13 // $Id$
  14 $_user_location = 'public';
  15
  16 define('AT_INCLUDE_PATH', '../../../include/');
  17 require(AT_INCLUDE_PATH.'vitals.inc.php');
  18 require(AT_SOCIAL_INCLUDE.'constants.inc.php');
  19 require(AT_SOCIAL_INCLUDE.'friends.inc.php');
  20 require(AT_SOCIAL_INCLUDE.'classes/SocialGroups/SocialGroup.class.php');
  21 require(AT_SOCIAL_INCLUDE.'classes/SocialGroups/SocialGroups.class.php');
  22 $_custom_css = $_base_path . AT_SOCIAL_BASENAME . 'module.css'; // use a custom stylesheet
  23
  24 // Get social group class
  25 $social_groups = new SocialGroups();
  26
  27 // Get this group
  28 $id = intval($_REQUEST['id']);  //make sure $_GET and $_POST don't overlap the use of 'id'
  29 $group = new SocialGroup($id);
  30
  31 //validate if this user is the administrator of the group
  32 if ($group->getUser() != $_SESSION['member_id']){
  33         $msg->addError('CANT_EDIT_GROUP');
  34         header('Location: index.php');
  35         exit;
  36 }
  37
  38 //TODO
  39 //validate the group_admin is indeed a group member
  40
  41 function resize_image($src, $dest, $src_h, $src_w, $dest_h, $dest_w, $type) {
  42         $thumbnail_img = imagecreatetruecolor($dest_w, $dest_h);
  43
  44         if ($type == 'gif') {
  45                 $source = imagecreatefromgif($src);
  46         } else if ($type == 'jpg') {
  47                 $source = imagecreatefromjpeg($src);
  48         } else {
  49                 $source = imagecreatefrompng($src);
  50         }
  51
  52         imagecopyresampled($thumbnail_img, $source, 0, 0, 0, 0, $dest_w, $dest_h, $src_w, $src_h);
  53
  54         if ($type == 'gif') {
  55                 imagegif($thumbnail_img, $dest);
  56         } else if ($type == 'jpg') {
  57                 imagejpeg($thumbnail_img, $dest, 75);
  58         } else {
  59                 imagepng($thumbnail_img, $dest, 7);
  60         }
  61 }
  62
  63 // check if GD is installed
  64 if (!extension_loaded('gd')) {
  65         require(AT_INCLUDE_PATH.'header.inc.php');
  66         $msg->printInfos('FEATURE_NOT_AVAILABLE');
  67         require(AT_INCLUDE_PATH.'footer.inc.php');
  68         exit;
  69 }
  70
  71
  72 // Update group
  73 if (isset($_POST['save'])){
  74         //handles group logo
  75         if ($_FILES['logo']['name']!=''){
  76                 $gd_info = gd_info();
  77                 $supported_images = array();
  78                 if ($gd_info['GIF Create Support']) {
  79                         $supported_images[] = 'gif';
  80                 }
  81                 if ($gd_info['JPG Support']) {
  82                         $supported_images[] = 'jpg';
  83                 }
  84                 if ($gd_info['PNG Support']) {
  85                         $supported_images[] = 'png';
  86                 }
  87
  88                 if (!$supported_images) {
  89                         require(AT_INCLUDE_PATH.'header.inc.php');
  90                         $msg->printInfos('FEATURE_NOT_AVAILABLE');
  91                         require(AT_INCLUDE_PATH.'footer.inc.php');
  92                         exit;
  93                 }
  94
  95                 // check if this is a supported file type
  96                 $filename   = $stripslashes($_FILES['logo']['name']);
  97                 $path_parts = pathinfo($filename);
  98                 $extension  = strtolower($path_parts['extension']);
  99                 $image_attributes = getimagesize($_FILES['logo']['tmp_name']);
 100
 101                 if ($extension == 'jpeg') {
 102                         $extension = 'jpg';
 103                 }
 104
 105                 if (!in_array($extension, $supported_images)) {
 106                         $msg->addError(array('FILE_ILLEGAL', $extension));
 107                         header('Location: '.$_SERVER['PHP_SELF'].'?id='.$id);
 108                         exit;
 109                 } else if ($image_attributes[2] > IMAGETYPE_PNG) {
 110                         $msg->addError(array('FILE_ILLEGAL', $extension));
 111                         header('Location: '.$_SERVER['PHP_SELF'].'?id='.$id);
 112                         exit;
 113                 }
 114
 115                 // make sure under max file size
 116                 if ($_FILES['logo']['size'] > $_config['prof_pic_max_file_size']) {
 117                         $msg->addError('FILE_MAX_SIZE');
 118                         header('Location: '.$_SERVER['PHP_SELF'].'?id='.$id);
 119                         exit;
 120                 }
 121
 122                 // delete the old images (if any)
 123                 foreach ($supported_images as $ext) {
 124                         if (file_exists(AT_CONTENT_DIR.'social/'. $id.'.'.$ext)) {
 125                                 unlink(AT_CONTENT_DIR.'social/'. $id.'.'.$ext);
 126                         }
 127                 }
 128
 129                 $new_filename = $id . '.' . $extension;
 130                 $original_img = AT_CONTENT_DIR.'social/temp_'. $new_filename;
 131                 $thumbnail_img= AT_CONTENT_DIR.'social/'. $new_filename;
 132
 133                 // only want the resized logo. (for now)
 134                 if (!move_uploaded_file($_FILES['logo']['tmp_name'], $original_img)) {
 135                         $msg->addError('CANNOT_OVERWRITE_FILE');
 136                         header('Location: '.$_SERVER['PHP_SELF'].'?id='.$id);
 137                         exit;
 138                 }
 139
 140                 // resize the original and save it at $thumbnail_file
 141                 $width  = $image_attributes[0];
 142                 $height = $image_attributes[1];
 143
 144                 if ($width > $height && $width>100) {
 145                         $thumbnail_height = intval(100 * $height / $width);
 146                         $thumbnail_width  = 100;
 147
 148                         resize_image($original_img, $thumbnail_img, $height, $width, $thumbnail_height, $thumbnail_width, $extension);
 149                 } else if ($width <= $height && $height > 100) {
 150                         $thumbnail_height= 100;
 151                         $thumbnail_width = intval(100 * $width / $height);
 152                         resize_image($original_img, $thumbnail_img, $height, $width, $thumbnail_height, $thumbnail_width, $extension);
 153                 } else {
 154                         // no resizing, just copy the image.
 155                         // it's too small to resize.
 156                         copy($original_img, $thumbnail_img);
 157                 }
 158                 // clean the original
 159                 unlink($original_img);
 160         }
 161
 162
 163         //check if fields are empty
 164         if ($_POST['group_name']==''){
 165                 $missing_fields[] = _AT('group_name');
 166         } elseif (intval($_POST['group_type'])<=0){
 167                 $missing_fields[] = _('group_type');
 168         }
 169         if ($missing_fields) {
 170                 $missing_fields = implode(', ', $missing_fields);
 171                 $msg->addError(array('EMPTY_FIELDS', $missing_fields));
 172         } else {
 173                 $isSucceded = $social_groups->updateGroup($id, $_POST['group_admin'], $_POST['group_type'], $_POST['group_name'], $_POST['description'], $new_filename, $_POST['group_privacy']);
 174
 175                 if($isSucceded){
 176                         $msg->addFeedback('SOCIAL_GROUP_UPDATED');
 177                         header('Location: '.url_rewrite(AT_SOCIAL_BASENAME.'groups/index.php', AT_PRETTY_URL_HEADER));
 178                         exit;
 179                 } else {
 180                         //Something went bad in the backend, contact admin?
 181                         $msg->addError('GROUP_EDIT_FAILED');
 182                 }
 183         }
 184 } elseif (isset($_POST['cancel'])){
 185         $msg->addFeedback('CANCELLED');
 186         header('Location: '.url_rewrite(AT_SOCIAL_BASENAME.'groups/index.php', AT_PRETTY_URL_HEADER));
 187         exit;
 188 }
 189
 190 //Display
 191 include(AT_INCLUDE_PATH.'header.inc.php');
 192 $savant->display('pubmenu.tmpl.php');
 193 $savant->assign('group_obj', $group);
 194 $savant->assign('group_types', $social_groups->getAllGroupType());
 195 $savant->display('sgroup_edit.tmpl.php');
 196 include(AT_INCLUDE_PATH.'footer.inc.php');
 197 ?>