From 236779567457cc9a1d3418aebf3ef426a07b1fd8 Mon Sep 17 00:00:00 2001
From: Dongsheng Cai <unoter@gmail.com>
Date: Fri, 4 Dec 2009 03:57:48 +0000
Subject: [PATCH] "MDL-20587, chat module, show sessions with just one users,
 based on Daniel Neis' patch, thanks"

---
 lang/en_utf8/chat.php |  4 ++++
 mod/chat/report.php   | 32 +++++++++++++++++++++++++-------
 2 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/lang/en_utf8/chat.php b/lang/en_utf8/chat.php
index ea1cf3bc71..a1a78ab0d8 100644
--- a/lang/en_utf8/chat.php
+++ b/lang/en_utf8/chat.php
@@ -38,6 +38,9 @@ $string['explainmethodnormal'] = 'These settings matter <strong>only</strong> if
 $string['generalconfig'] = 'General configuration';
 $string['helpchatting'] = 'Help with chatting';
 $string['idle'] = 'Idle';
+$string['list_complete_sessions'] = 'List just complete sessions.';
+$string['list_all_sessions'] = 'List all sessions.';
+$string['listing_all_sessions'] = 'Listing all sessions.';
 $string['invalidid'] = 'Could not find that chat room!';
 $string['inputarea'] = 'Input area';
 $string['messageyoubeep'] = 'You beeped $a';
@@ -53,6 +56,7 @@ $string['modulename'] = 'Chat';
 $string['modulenameplural'] = 'Chats';
 $string['neverdeletemessages'] = 'Never delete messages';
 $string['nextsession'] = 'Next scheduled session';
+$string['no_complete_sessions_found'] = 'No complete sessions found.';
 $string['nochat'] = 'No chat found';
 $string['noguests'] = 'The chat is not open to guests';
 $string['nomessages'] = 'No messages yet';
diff --git a/mod/chat/report.php b/mod/chat/report.php
index 85337c76a8..6d4f3abb52 100644
--- a/mod/chat/report.php
+++ b/mod/chat/report.php
@@ -10,6 +10,7 @@
     $end           = optional_param('end', 0, PARAM_INT);     // End of period
     $deletesession = optional_param('deletesession', 0, PARAM_BOOL);
     $confirmdelete = optional_param('confirmdelete', 0, PARAM_BOOL);
+    $show_all      = optional_param('show_all', 0, PARAM_BOOL);
 
     $url = new moodle_url($CFG->wwwroot.'/mod/chat/report.php', array('id'=>$id));
     if ($start !== 0) {
@@ -155,7 +156,6 @@
 
 
 /// Get the messages
-
     if (empty($messages)) {   /// May have already got them above
         if (!$messages = $DB->get_records_select('chat_messages', "chatid = :chatid $groupselect", $params, "timestamp DESC")) {
             echo $OUTPUT->heading(get_string('nomessages', 'chat'));
@@ -164,13 +164,20 @@
         }
     }
 
+    if ($show_all) {
+        echo $OUTPUT->heading(get_string('listing_all_sessions', 'chat') .
+                      '&nbsp;<a href="report.php?id='.$cm->id.'&amp;show_all=0">' .
+                      get_string('list_complete_sessions', 'chat') .  '</a>');
+    }
+
 /// Show all the sessions
 
-    $sessiongap = 5 * 60;    // 5 minutes silence means a new session
-    $sessionend = 0;
-    $sessionstart   = 0;
-    $sessionusers = array();
-    $lasttime   = 0;
+    $sessiongap        = 5 * 60;    // 5 minutes silence means a new session
+    $sessionend        = 0;
+    $sessionstart      = 0;
+    $sessionusers      = array();
+    $lasttime          = 0;
+    $complete_sessions = 0;
 
     $messagesleft = count($messages);
 
@@ -195,7 +202,8 @@
         } else {
             $sessionstart = $lasttime;
 
-            if ($sessionend - $sessionstart > 60 and count($sessionusers) > 1) {
+            $is_complete = ($sessionend - $sessionstart > 60 and count($sessionusers) > 1);
+            if ($show_all or $is_complete) {
 
                 echo '<p align="center">'.userdate($sessionstart).' --> '. userdate($sessionend).'</p>';
 
@@ -231,6 +239,9 @@
                 echo '</p>';
                 echo $OUTPUT->box_end();
             }
+            if ($is_complete) {
+                $complete_sessions++;
+            }
 
             $sessionend = $message->timestamp;
             $sessionusers = array();
@@ -247,6 +258,13 @@
     }
 
 
+    if (!$show_all and $complete_sessions == 0) {
+        echo $OUTPUT->heading(get_string('no_complete_sessions_found', 'chat') . 
+                      '&nbsp;<a href="report.php?id='.$cm->id.'&amp;show_all=1">' .
+                      get_string('list_all_sessions', 'chat') .
+                      '</a>');
+    }
+
 /// Finish the page
     echo $OUTPUT->footer();
 
-- 
2.39.5