From 46450e9bbac7c4eecbf70a49bbf5f31e1127441f Mon Sep 17 00:00:00 2001
From: Cole <cts5ws@virginia.edu>
Date: Sun, 3 Jan 2016 15:30:48 -0500
Subject: [PATCH] comments

---
 src/chat.php          | 22 ++++++++++++----------
 src/joinChat.php      |  2 +-
 src/updateData.php    |  6 ++++--
 src/updateMessage.php |  6 +++++-
 src/wipe.php          |  1 +
 5 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/src/chat.php b/src/chat.php
index 2bf5f8f..c3ed109 100644
--- a/src/chat.php
+++ b/src/chat.php
@@ -1,6 +1,7 @@
 <?php
     session_start();
 
+    //checks if session is v alid
     if(!isset($_SESSION["valid"])){
         $_SESSION["valid"] = "true";
     }
@@ -37,6 +38,7 @@
     <script>
         $(document).ready();
 
+        //wipes data on the front end and back end
         function wipeData(){
             $.ajax({
                 url : "wipe.php",
@@ -57,6 +59,7 @@ function(data){
             });
         }
 
+        //counts characters and updates div
         function charCount() {
             var text = document.getElementById("message").value;
             var length = text.length;
@@ -67,6 +70,7 @@ function charCount() {
         }
         window.setInterval(charCount, 250);
 
+        //checks with server script to get updated messages and renders them appropriately
         function refreshData() {
             $.ajax({
                 url: "updateData.php",
@@ -108,6 +112,7 @@ function(data){
                             $(divTime).html(time);
                             $(divNum).html(num);
 
+                            //handles alignment based on the sender
                             if(real_name == name){
                                 $(divMessage).css({"font-weight": "bold", "text-align" : "right", "padding-right" : "25px"});
                                 $(divInfo).css({"font-weight": "bold", "text-align" : "left"});
@@ -124,10 +129,11 @@ function(data){
         }
         window.setInterval(refreshData, 250);
 
-
+        //sends message to database and renders updated messages
         function sendMessage(){
             var text = document.getElementById("message").value;
 
+            //not being used currently
             var alert = "";
             if(text == ""){
                 alert = "Cannot send a blank message";
@@ -397,15 +403,12 @@ function(data){
         </div>
     </table>
 
-    <td><input type="text" id="message" name="message" size="100" maxlength="110" onkeydown="if (event.keyCode == 13) document.getElementById('button').click()" autocomplete="off">
-
-
-        <button class="btn btn-primary" id="button" name="button" value="Send" onclick="sendMessage();">
-            <span class="glyphicon glyphicon-send"></span>
-        </button>
-
-        <div id="count" class="row col-center"><h4><span class="label label-default">Word Count: 0</span></h4></div>
+    <input type="text" id="message" name="message" size="100" maxlength="110" onkeydown="if (event.keyCode == 13) document.getElementById('button').click()" autocomplete="off">
 
+    <button class="btn btn-primary" id="button" name="button" value="Send" onclick="sendMessage();">
+        <span class="glyphicon glyphicon-send"></span>
+    </button>
+    <div id="count" class="row col-center"><h4><span class="label label-default">Word Count: 0</span></h4></div>
 </div>
 
 <div id="footer" class="mastfoot" style="text-align: center;" >
@@ -416,6 +419,5 @@ function(data){
         </b><em>Copyright &copy; 2015 &middot; All rights reserved.</em>
     </div>
 </div>
-
 </body>
 </html>
diff --git a/src/joinChat.php b/src/joinChat.php
index fadb66f..bd22b05 100644
--- a/src/joinChat.php
+++ b/src/joinChat.php
@@ -10,7 +10,7 @@
 
     $_SESSION["chat"] = $chat;
     $_SESSION["name"] = $name;
-    
+
 
     if(!mysql_num_rows(mysqli_query("SHOW TABLES LIKE '".`$chat`."'"))==1){
         //table doesn't exits
diff --git a/src/updateData.php b/src/updateData.php
index 470d2cd..b36040b 100644
--- a/src/updateData.php
+++ b/src/updateData.php
@@ -6,9 +6,11 @@
     require_once('dbconfig.php');
     $con = mysqli_connect($DB_HOST, $DB_USER, $DB_PASSWORD, $DB_DATABASE);
 
+    //gathers session variables
     $name = $_SESSION["name"];
     $chat = $_SESSION["chat"];
 
+    //prepares message to be sent to the webpage for rendering
     $data = [];
     $iter = 1;
 
@@ -17,11 +19,10 @@
         $data[$iter] = $row;
         $iter++;
     }
-
     mysqli_close($con);
 
+    //adds current user and emptyness information
     $data["current_user"] = $name;
-
     if(mysqli_num_rows($result) == 0){
         $data["empty"] = "true";
     }
@@ -29,5 +30,6 @@
         $data["empty"] = "false";
     }
 
+    //returns data
     echo json_encode($data);
 ?>
\ No newline at end of file
diff --git a/src/updateMessage.php b/src/updateMessage.php
index 0f5dfc7..cf9c7a4 100644
--- a/src/updateMessage.php
+++ b/src/updateMessage.php
@@ -6,24 +6,29 @@
     require_once('dbconfig.php');
     $con = mysqli_connect($DB_HOST, $DB_USER, $DB_PASSWORD, $DB_DATABASE);
 
+    //gathers information from session and post variables
     $name = $_SESSION["name"];
     $chat = $_SESSION["chat"];
     $message = mysqli_escape_string($con, $_POST["message"]);
 
     $messageNum = mysqli_num_rows(mysqli_query($con, "select * from `$chat`"));
 
+    //creates timestamp
     $time = date("h:i:sa");
     $mydate=getdate(date("U"));
     $date = $mydate[mon] . "/" . $mydate[mday] . "/" . $mydate[year];
     $timestamp = $date . " @ " . $time;
 
+    //updates all message numbers by 1 and inserts new message
     mysqli_query($con,"update `$chat` set m_num = m_num + 1");
     mysqli_query($con, "insert into `$chat` (name, message, time, m_num) values ('$name','$message','$timestamp','1')");
 
+    //deletes any overflow message
     if($messageNum == 20){
         mysqli_query($con, "delete from `$chat` where `m_num` = '21'");
     }
 
+    //prepares data to be sent back for rendering
     $data = [];
     $iter = 1;
 
@@ -32,7 +37,6 @@
         $data[$iter] = $row;
         $iter++;
     }
-
     mysqli_close($con);
 
     $data["current_user"] = $name;
diff --git a/src/wipe.php b/src/wipe.php
index ddd4d06..b7656f7 100644
--- a/src/wipe.php
+++ b/src/wipe.php
@@ -7,6 +7,7 @@
 
     $chat = $_SESSION["chat"];
 
+    //empties the table for the specified chat
     mysqli_query($con, "delete from `$chat`");
     mysqli_close($con);
 ?>
\ No newline at end of file