From dd028bec3822d1d9c28c35d599d687e038c7705f Mon Sep 17 00:00:00 2001
From: wei <>
Date: Thu, 4 Jan 2007 11:23:26 +0000
Subject: Add chat demo and tutorial.

---
 demos/chat/protected/App_Code/ChatBufferRecord.php |  64 +++++++++++++++++++++
 demos/chat/protected/App_Code/ChatUserManager.php  |  63 ++++++++++++++++++++
 demos/chat/protected/App_Code/ChatUserRecord.php   |  41 +++++++++++++
 demos/chat/protected/App_Code/chat.db              | Bin 0 -> 4096 bytes
 4 files changed, 168 insertions(+)
 create mode 100644 demos/chat/protected/App_Code/ChatBufferRecord.php
 create mode 100644 demos/chat/protected/App_Code/ChatUserManager.php
 create mode 100644 demos/chat/protected/App_Code/ChatUserRecord.php
 create mode 100644 demos/chat/protected/App_Code/chat.db

(limited to 'demos/chat/protected/App_Code')

diff --git a/demos/chat/protected/App_Code/ChatBufferRecord.php b/demos/chat/protected/App_Code/ChatBufferRecord.php
new file mode 100644
index 00000000..cf3c651f
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatBufferRecord.php
@@ -0,0 +1,64 @@
+<?php
+
+class ChatBufferRecord extends TActiveRecord
+{
+	public $id;
+	public $for_user;
+	public $from_user;
+	public $message;
+	private $_created_on;
+
+	public static $_tablename='chat_buffer';
+
+	public function getCreated_On()
+	{
+		if($this->_created_on === null)
+			$this->_created_on = time();
+		return $this->_created_on;
+	}
+
+	public function setCreated_On($value)
+	{
+		$this->_created_on = $value;
+	}
+
+	public static function finder()
+	{
+		return parent::getRecordFinder('ChatBufferRecord');
+	}
+
+	public function saveMessage()
+	{
+		foreach(ChatUserRecord::finder()->findAll() as $user)
+		{
+			$message = new self;
+			$message->for_user = $user->username;
+			$message->from_user = $this->from_user;
+			$message->message = $this->message;
+			$message->save();
+			if($user->username == $this->from_user)
+			{
+				$user->last_activity = time(); //update the last activity;
+				$user->save();
+			}
+		}
+	}
+
+	public function getUserMessages($user)
+	{
+		$content = '';
+		foreach($this->findAll('for_user = ?', $user) as $message)
+			$content .= $this->formatMessage($message);
+		$this->deleteAll('for_user = ? OR created_on < ?', $user, time() - 300); //5 min inactivity
+		return $content;
+	}
+
+	protected function formatMessage($message)
+	{
+		$user = htmlspecialchars($message->from_user);
+		$content = htmlspecialchars($message->message);
+		return "<div class=\"message\"><strong>{$user}:</strong> <span>{$content}</span></div>";
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/ChatUserManager.php b/demos/chat/protected/App_Code/ChatUserManager.php
new file mode 100644
index 00000000..f8fe09cc
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatUserManager.php
@@ -0,0 +1,63 @@
+<?php
+
+class ChatUserManager extends TModule implements IUserManager
+{
+	/**
+	 * @return string name for a guest user.
+	 */
+	public function getGuestName()
+	{
+		return 'Guest';
+	}
+	
+	/**
+	 * Returns a user instance given the user name.
+	 * @param string user name, null if it is a guest.
+	 * @return TUser the user instance
+	 */
+	public function getUser($username=null)
+	{
+		$user=new TUser($this);
+		$user->setIsGuest(true);		
+		if($username !== null)
+		{
+			$user->setIsGuest(false);
+			$user->setName($username);
+			$user->setRoles(array('normal'));
+		}
+		return $user;
+	}
+	
+	/**
+	 * Add a new user to the database.
+	 * @param string username.
+	 */
+	public function addNewUser($username)
+	{
+		$user = new ChatUserRecord();
+		$user->username = $username;
+		$user->save();
+	}
+
+	/**
+	 * @return boolean true if username already exists, false otherwise.
+	 */
+	public function usernameExists($username)
+	{
+		return ChatUserRecord::finder()->findByUsername($username) instanceof ChatUserRecord;
+	}
+
+	/**
+	 * Validates if the username exists.
+	 * @param string user name
+	 * @param string password
+	 * @return boolean true if validation is successful, false otherwise.
+	 */
+	public function validateUser($username,$password)
+	{
+		return $this->usernameExists($username);
+	}
+}
+
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/ChatUserRecord.php b/demos/chat/protected/App_Code/ChatUserRecord.php
new file mode 100644
index 00000000..9bfb11cd
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatUserRecord.php
@@ -0,0 +1,41 @@
+<?php
+
+class ChatUserRecord extends TActiveRecord
+{
+	public $username;
+	private $_last_activity;
+
+	public static $_tablename='chat_users';
+
+	public function getLast_Activity()
+	{
+		if($this->_last_activity === null)
+			$this->_last_activity = time();
+		return $this->_last_activity;
+	}
+
+	public function setLast_Activity($value)
+	{
+		$this->_last_activity = $value;
+	}
+
+	public static function finder()
+	{
+		return parent::getRecordFinder('ChatUserRecord');
+	}
+
+	public function getUserList()
+	{
+		$this->deleteAll('last_activity < ?', time()-300); //5 min inactivity
+		$content = '<ul>';
+		foreach($this->findAll() as $user)
+		{
+			$content .= '<li>'.htmlspecialchars($user->username).'</li>';
+		}
+		$content .= '</ul>';
+
+		return $content;
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/chat.db b/demos/chat/protected/App_Code/chat.db
new file mode 100644
index 00000000..f8e3660f
Binary files /dev/null and b/demos/chat/protected/App_Code/chat.db differ
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