== iPeer v2 Technical Documentation == 
Based on file: `iPeer-v2-Technical-Documentation.doc`

=== rdAuth Components: ===
rdAuth components monitors the current user’s information such as id, role, username, fullname.  To get the current user’s attribute, we can call:
From View: 		$rdAuth->id 
From Controller:	$this->rdAuth->id
=== Sys_Parameter Settings: ===
System Parameters are loaded once the users has login successfully.  There are 2 core parameters that control the iPeer integration with UBC CWL:

For General version:

||Parameter Code||Parameter Value||
||custom.login_control||ipeer
||custom.login_page_pathname||Leave it as empty

For UBC CWL customization:

||Parameter Code||Parameter Value
||custom.login_control||UBC_CWL
||custom.login_page_pathname||custom_ubc_cwl_login

To check whether the iPeer is UBC CWL integrated or not:
{{{ 
if (isset($this->rdAuth->customIntegrateCWL) && $this->rdAuth->customIntegrateCWL) {
// ipeer is integrated with CWL
}
}}}
=== Get Sys_Parameter from iPeer: ===
e.g. Get the parameter code ‘system.upload_dir’:
{{{
		$uploadDir = $this->sysContainer->getParamByParamCode('system.upload_dir');
		$uploadFile = APP.$uploadDir['parameter_value'] . $filename;
}}}

=== Some useful functions: ===
1.Get all accessible courses:
{{{	
$courseList = $this->sysContainer->getMyCourseList(); 
}}}

2.Get no. of members within a group:
{{{	
$numMembers=$event['Event']['self_eval'] ? 
    $this->GroupsMembers->findCount('group_id='.$groupId) : 
    $this->GroupsMembers->findCount('group_id='.$groupId) - 1; 
}}}
=== Caution: To upgrade CakePHP library for iPeer, please also look into the following files to change for iPeer customization: ===
 1. replace all thtml -> tpl.php, since iPeer use php extension instead of thtml
 2. change the controller.php in \cake\libs\controller 
 3. change html.php helper in \cake\libs\view\helpers
 4. change dbo_source.php in \cake\libs\model\datasources

=== UBC CWL Integration: === 
Instead of the Sys_Parameter setting from database, there are two files for CWL integration:
ipeer_v2\app\controller\loginout_controller.php 
ipeer_v2\app\views\loginout\custom_ubc_cwl_login.tpl.php

`Note: Remove all the following code when release the iPeer v2 to SourceForge.`

==== From loginout_controller: ====
{{{
	function loginByCWL() {
		$this->autoRender = false;
		/**
		 * the URL of the CWL login page
		 */
		$CWLLoginURL = 'https://www.auth.verf.cwl.ubc.ca/auth/login';

		// CWL XML-RPC interface URLs: https://www.auth.verf.cwl.ubc.ca/auth/rpc (for verification)
		//                             https://www.auth.cwl.ubc.ca/auth/rpc
		$CWLRPCURL = "https://www.auth.verf.cwl.ubc.ca";
		$CWLRPCPath = "/auth/rpc";

		/**
		 * the name of the function being called through XML-RPC. this is
		 * prepended with 'session.' later
		 */
		//$CWLFunctionName = 'getLoginName';
		$CWLFunctionName = 'getIdentities';

		/**
		 * the application's ID/name and password as given by the CWL team
		 */
		$applicationID = 'cis_ipeer_vsa';
		$applicationPassword = 'p33rl355';

		$ticket = $_GET['ticket'];
		if ($ticket != null) {
			// now get some info about the session

			// the parameters passed to the RPC interface.  the ticket is the
			// first argument for all functions
			$params = array( new XML_RPC_Value($ticket, 'string') );

			// note that the function name is prepended with the string 'session.'
			$msg = new XML_RPC_Message("session.$CWLFunctionName", $params);

			$cli = new XML_RPC_Client($CWLRPCPath, $CWLRPCURL);
			$cli->setCredentials($applicationID, $applicationPassword);
			//print_r ($cli);
			//$cli->setDebug(1);

			$resp = $cli->send($msg);
			if (!$resp)
			{
				echo 'Communication error: ' . $cli->errstr;
				exit;
			}

			// print the raw response data

			//echo "<b>Raw Response:</b><br /><pre>";
			//print_r($resp);
			//echo "</pre>";

			if (!$resp->faultCode())
			{
				// an encoded response value
				$val = $resp->value();

				// the actual data we requested
				$data = XML_RPC_decode($val);

				//echo "<b>Response Data:</b><br /><pre>";
				//print_r($data);
				//echo "</pre>";
				if (!empty($data['student_number'])) {
				  $studentNumber = $data['student_number'];

  				//Check is this CWL login student able to use iPeer
  				$this->params['data'] = $this->User->findUserByStudentNo(trim($studentNumber));

  				if ($this->params['data']['User']['id'])
  				{
  					//sets up the session vars
  					$this->rdAuth->set($this->params['data']['User']);

  					//sets up the system container for accessible functions
  					$accessFunction = $this->SysFunction->getAllAccessibleFunction($this->params['data']['User']['role']);
  					$accessController = $this->SysFunction->getTopAccessibleFunction($this->params['data']['User']['role']);
  					$this->sysContainer->setAcesFunctionList($accessFunction);
  					$this->sysContainer->setActionList($accessController);

    				//setup my accessible courses
    				$myCourses = $this->Course->findAccessibleCoursesList($this->params['data']['User']);
    				$this->sysContainer->setMyCourseList($myCourses);

  					//clear up the data parameters
  					$this->params['data'] = array();
  					$redirect = '/home/index/';
  					$this->redirect($redirect);
  				}
  				else
  				{
  					$this->Session->write('CWLErr', 'NO_PERMISSION');
  					$redirect = 'loginout/login';
  					$this->redirect($redirect);
  				}
				} else {
					$this->Session->write('CWLErr', 'INVALID_USER');
					$redirect = 'loginout/login';
					$this->redirect($redirect);
				}

			}
			else
			{
				// error
				echo '<b>Fault Code:</b> ' . $resp->faultCode() . "<br />\n";
				echo '<b>Fault Reason:</b> ' . $resp->faultString() . "<br />\n";
			}

		}

	}
}}}
==== Delete the view page custom_ubc_cwl_login.tpl.php: ====
{{{
…
document.write('<td width="62">For Students:</td>');
document.write('<td width="140"><A HREF="https://www.auth.verf.cwl.ubc.ca/auth/login?serviceName=cis_ipeer_vsa&serviceURL=http://ipeer.apsc.ubc.ca<?php echo $this->webroot.$this->themeWeb;?>loginout/loginByCWL">');
document.write('<IMG SRC="https://www.auth.verf.cwl.ubc.ca/CWL_login_button.gif" WIDTH="76" HEIGHT="25" ALT="CWL Login" BORDER="0">');  
//document.write('<IMG SRC="https://www.auth.cwl.ubc.ca/CWL_login_button.gif " WIDTH="76" HEIGHT="25" ALT="CWL Login" BORDER="0">');
document.write('</A>');
document.write('</td>');
….
}}}