<?php

/* App Controller */

class AppController extends Controller {

    var $components = array('RequestHandler');

    var $uses = array('User');
    var $helpers = array('Javascript', 'Time', 'Html', 'Form');
    function beforeFilter() {

	$user = null;
	
	// Check if Tailscale authentication is enabled
	if (Configure::read('Tailscale.enabled')) {
	    // Check for Tailscale authentication headers
	    $tailscaleLogin = isset($_SERVER['HTTP_TAILSCALE_USER_LOGIN']) ? $_SERVER['HTTP_TAILSCALE_USER_LOGIN'] : null;
	    $tailscaleName = isset($_SERVER['HTTP_TAILSCALE_USER_NAME']) ? $_SERVER['HTTP_TAILSCALE_USER_NAME'] : null;
	    
	    if ($tailscaleLogin) {
		// Try to find user by email address from Tailscale header
		$user = $this->User->find('first', array(
		    'recursive' => 0, 
		    'conditions' => array('User.email' => $tailscaleLogin)
		));
		
		// If user not found and auto-creation is enabled, create a new user
		if (!$user && Configure::read('Tailscale.autoCreateUsers')) {
		    // Parse the name
		    $firstName = '';
		    $lastName = '';
		    if ($tailscaleName) {
			$nameParts = explode(' ', $tailscaleName);
			$firstName = $nameParts[0];
			if (count($nameParts) > 1) {
			    array_shift($nameParts);
			    $lastName = implode(' ', $nameParts);
			}
		    }
		    
		    $userData = array(
			'User' => array(
			    'email' => $tailscaleLogin,
			    'username' => $tailscaleLogin,
			    'first_name' => $firstName,
			    'last_name' => $lastName,
			    'type' => 'user',
			    'access_level' => Configure::read('Tailscale.defaultAccessLevel'),
			    'enabled' => 1,
			    'by_vault' => 0
			)
		    );
		    $this->User->create();
		    if ($this->User->save($userData)) {
			$user = $this->User->find('first', array(
			    'recursive' => 0,
			    'conditions' => array('User.id' => $this->User->id)
			));
		    }
		}
	    }
	}
	
	// Fall back to HTTP basic auth if no Tailscale auth or user not found
	if (!$user && isset($_SERVER["PHP_AUTH_USER"])) {
	    $user = $this->User->find('first', array(
		'recursive' => 0, 
		'conditions' => array('User.username' => $_SERVER["PHP_AUTH_USER"])
	    ));
	}
	
	$this->set("currentuser", $user);

	if($this->RequestHandler->isAjax()) {
	    Configure::write('debug', 0);
	}

    }


    /**
     * Check if the current logged in user is an admin
     * @return boolean
     */
    function isAdmin() {
	$currentuser = $this->getCurrentUser();
	if($currentuser['access_level'] == 'admin') {
	    return true;
	}
	else {
	    return false;
	}
    }


    function isManager() {
	$currentuser = $this->getCurrentUser();
	if($currentuser['access_level'] == 'manager') {
	    return true;
	}
	else {
	    return false;
	}
    }


    /**
     * Read the current logged in user.
     * @return array - the currently logged in user.
     */
    function getCurrentUser() {
	$user = null;
	
	// Check if Tailscale authentication is enabled
	if (Configure::read('Tailscale.enabled')) {
	    $tailscaleLogin = isset($_SERVER['HTTP_TAILSCALE_USER_LOGIN']) ? $_SERVER['HTTP_TAILSCALE_USER_LOGIN'] : null;
	    
	    if ($tailscaleLogin) {
		// Try to find user by email address from Tailscale header
		$user = $this->User->find('first', array(
		    'recursive' => 0, 
		    'conditions' => array('User.email' => $tailscaleLogin)
		));
	    }
	}
	
	// Fall back to HTTP basic auth if no Tailscale auth or user not found
	if (!$user && isset($_SERVER["PHP_AUTH_USER"])) {
	    $user = $this->User->find('first', array(
		'recursive' => 0, 
		'conditions' => array('User.username' => $_SERVER["PHP_AUTH_USER"])
	    ));
	}
	
	return $user;
    }

    /**
     * Return the id of the current user. False if not logged in.
     */
    function getCurrentUserID() {
	$currentuser = $this->getCurrentUser();
	if($currentuser) {
	    return $currentuser['User']['id'];
	}
	else {
	    return false;
	}
    }


    function calculateTotals($document, $gst) {
	$totals = array('subtotal'=>0, 'gst'=>0, 'total'=>0);


	foreach($document['LineItem'] as $lineitem) {
	    if($lineitem['option'] == 1) {
		$totals['subtotal'] = 'TBA';
		$totals['total'] = 'TBA';
		$totals['gst'] = 'TBA';
		return $totals;
	    }
	    else {
		$totals['subtotal'] += $lineitem['net_price'];
	    }
	}

	if($gst == 1) {
	    $totals['gst'] = 0.1*$totals['subtotal'];
	}
	$totals['total'] = $totals['gst'] + $totals['subtotal'];
	return $totals;

    }

    function unset_keys($array, $keys) {
	foreach($keys as $key ) {
	    $array[$key] = null;
	}
	return $array;
    }

    function unset_multiple_keys($array, $keys) {
	foreach($array as $index => $item) {
	    $array[$index]['id'] = null;
	    $array[$index]['document_id'] = null;
	    $array[$index]['costing_id'] = null;
	}
    }


     /**
     *
     * @param <type> $year
     * @param <type> $prevYear
     * @return <type>
     */
    function getFirstDayFY($year,$prevYear = false) {
	if($prevYear == false) {
	    return mktime(0,0,0,7,1,$year);

	}
	else {
	    return mktime(0,0,0,7,1,$year-1);
	}
    }
    /**
     *
     * @param <type> $year
     * @return <int>
     */
    function getLastDayFY($year) {
	return mktime(23,59,59,6,30,$year);

    }


}
?>