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khosb/modules/discount/discount.inc.php

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<?php
/**
* AgileBill - Open Billing Software
*
* This body of work is free software; you can redistribute it and/or
* modify it under the terms of the Open AgileBill License
* License as published at http://www.agileco.com/agilebill/license1-4.txt
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*
* Originally authored by Tony Landis, AgileBill LLC
*
* Recent modifications by Deon George
*
* @author Deon George <deonATleenooksDOTnet>
* @copyright 2009 Deon George
* @link http://osb.leenooks.net
*
* @link http://www.agileco.com/
* @copyright 2004-2008 Agileco, LLC.
* @license http://www.agileco.com/agilebill/license1-4.txt
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* @author Tony Landis <tony@agileco.com>
* @package AgileBill
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* @subpackage Module:Discount
*/
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/**
* The main AgileBill Discount Class
*
* @package AgileBill
* @subpackage Module:Discount
*/
class discount extends OSB_module {
/**
* array of available discounts
*
* @var array
*/
var $discounts=false;
/**
* the cumulative amount of the current discount
*
* @var float
*/
var $discount_total=0;
/**
* the array of discounts applied to the line_items
*
* @var array
*/
var $discount_arr;
/**
* Array that contains list of discount plugins in the /plugins/discount/ directory to load
*
* @var array
*/
var $plugins=false;
/**
* Load a specific discount plugin and validate the results
*
* @param string $plugin The plugin name
* @param string $discount The discount code
* @return bool
*/
function plugin_validate($plugin, $discount) {
$plugin_file = PATH_PLUGINS.'discount/'. $plugin . '.php';
if(is_file($plugin_file)) {
include_once($plugin_file);
eval('$plg = new plgn_discount_'. $plugin .';');
if(is_object($plg)) {
if(is_callable(array($plg, 'validate'))) {
$plg->discount = $discount;
return $plg->validate($discount);
}
}
}
return false;
}
/**
* Add a discount at the cart/checkout by user/admin
*
* @param array $VAR
* @return bool
*/
function add_cart_discount($VAR) {
global $C_debug, $C_translate, $smarty;
# Validate input
if(empty($VAR["discount"])) {
$C_debug->alert($C_translate->translate('invalid_discount','checkout',''));
return false;
}
$discount_code = $VAR["discount"];
# Check the supplied discount
$db = &DB();
$rs = $db->Execute(sqlSelect($db,"discount","*","( date_start IS NULL OR date_start=0 OR date_start>".time().") AND date_expire<=".time()." AND name=::$discount_code::"));
if (!$rs || !$rs->RecordCount() || $rs->fields["status"] != '1') {
// local check failed, attempt any discount plugins
$plg=false;
if($this->plugins && is_array($this->plugins)) {
foreach($this->plugins as $plugin){
if($discount_code = $this->plugin_validate($plugin, $discount_code)) {
$plg=true;
break;
}
}
}
// no plugins returned true...
if(!$plg) {
$C_debug->alert($C_translate->translate('invalid_discount','checkout',''));
return false;
}
}
# get existing discounts:
$arr = array();
$rs = $db->Execute(sqlSelect($db,"session","discounts","id=::".SESS."::"));
if($rs && $rs->RecordCount() && !empty($rs->fields['discounts']) && is_string($rs->fields['discounts']))
$arr=unserialize($rs->fields['discounts']);
# check for duplicates
$do = true;
if(is_array($arr)) {
foreach($arr as $key=>$discount) {
if($discount == $discount_code) {
unset($arr[$key]);
$do = false;
}
}
}
# update session data
if($do) $arr[]=$discount_code;
$rs = $db->Execute(sqlUpdate($db,"session",array('discounts'=> serialize($arr)), "id=::".SESS."::"));
return true;
}
/**
* Commit current discounts to the database (call after creating an invoice_item record)
*/
function invoice_item($invoice_id,$invoice_item_id,$account_id,$discount_arr=false) {
if($discount_arr && is_array($discount_arr)) $this->discount_arr=$discount_arr;
if(is_array($this->discount_arr)) {
$db=&DB();
foreach($this->discount_arr as $dsc) {
$sql="INSERT INTO ".AGILE_DB_PREFIX."invoice_item_discount SET id=".sqlGenID($db,"invoice_item_discount").", site_id=".DEFAULT_SITE.", invoice_id=$invoice_id, account_id=$account_id, invoice_item_id=$invoice_item_id, discount=".$db->qstr($dsc["discount"]).", amount=".$db->qstr($dsc["amount"]);
$db->Execute($sql);
}
}
}
/**
* Get the avialable discounts for an account, session, or service
* @param $account
* @param $type 0=initial order, 1=recurring charge
*/
function available_discounts($account, $type=0,$invoice=false) {
// get account specific discounts
if($type) $type = " recurr_status=1 "; else $type = " new_status=1 ";
$db =& DB();
$rs = $db->Execute($sql=sqlSelect($db, 'discount', '*', "avail_account_id = $account AND $type AND status=1"));
if($rs && $rs->RecordCount()) {
while (!$rs->EOF) {
$this->discounts["{$rs->fields['name']}"] = $rs->fields;
$rs->MoveNext();
}
}
// get session discounts from cart
if($type==0) {
$rsc = $db->Execute(sqlSelect($db, 'session', 'discounts', "(account_id = $account OR id=::".SESS."::) AND discounts != '' AND discounts IS NOT NULL"));
if($rsc && $rsc->RecordCount()) {
$arr=unserialize($rsc->fields['discounts']);
foreach($arr as $discount) {
if(!empty($discount)) {
$rs = $db->Execute(sqlSelect($db, 'discount', '*', "name=::$discount:: AND status=1"));
if($rs && $rs->RecordCount())
if(empty($this->discounts["{$rs->fields['name']}"])) $this->discounts["{$rs->fields['name']}"] = $rs->fields;
}
}
}
}
// get recurring discounts
if($type==1 && $invoice) {
$rs = $db->Execute(sqlSelect($db,array('invoice_item_discount','discount'),'B.*', "A.invoice_id = $invoice AND A.discount = B.name AND $type AND status=1"));
if($rs && $rs->RecordCount()) {
while (!$rs->EOF) {
if(empty($this->discounts["{$rs->fields['name']}"])) $this->discounts["{$rs->fields['name']}"] = $rs->fields;
$rs->MoveNext();
}
}
}
}
/**
* Calculate all applicable discounts for the current line item
* @param $type bool 0=initial product, 1=recurring product, 2=initial_domain, 3=recurring domain
* @param $invoice_item_id int The invoice item id for the discount
* @param $product_id int The product ID if type=0,1 or The TLD if type = 2,3
* @param $account_id int The account ID
* @param $invoice_amt float The cumulative invoice amount
* @param $prod_amt float The product price before any discounts
*/
function calc_all_discounts($type=0,$invoice_item_id=false, $product_id, $product_amt, $account_id, $invoice_amt) {
$total_amt=0;
if(is_array($this->discounts)) {
if(!$invoice_item_id) unset($this->discount_arr);
foreach($this->discounts as $discount => $tmp)
{
$amt = $this->calc_item_discount($type,$discount, $product_id, $account_id, $invoice_amt, $product_amt);
if($amt > 0)
{
$this->discount_arr[] = Array ('id' => $invoice_item_id, 'discount' => $discount, 'amount' => $amt );
$total_amt += $amt;
$this->discount_total+=$amt;
}
}
}
return $total_amt;
}
/**
* Add a manual ad-hoc invoice to the array
*
* @param float $amount The discount amount
* @param string $discount Name of the discount
* @param $invoice_item_id int The invoice item id for the discount
*/
function add_manual_discount($amount, $discount='MISC', $invoice_item_id=false) {
$this->discount_arr[] = Array ('id' => $invoice_item_id, 'discount' => $discount, 'amount' => $amount );
}
/**
* Calculate Recurring Discount
* @param $type bool 0=initial product, 1=recurring product, 2=initial_domain, 3=recurring domain
* @param $discount string The discount array obj (must be set to $this->discount["$discounts"] containing the fields of the discount)
* @param $product_id int The product ID if type=0,1 or The TLD if type = 2,3
* @param $account_id int The account ID
* @param $invoice_amt float The cumulative invoice amount
* @param $prod_amt float The product price before any discounts
*/
function calc_item_discount($type, $discount, $product_id, $account_id, $invoice_amt, $prod_amt)
{
$this->discount = $this->discounts["$discount"];
if($type == 0 || $type == 2) { // initial
$rate_type = $this->discount["new_type"];
$rate = $this->discount["new_rate"];
$min_cost = $this->discount["new_min_cost"];
$max_usage_amt = $this->discount["new_max_discount"];
} else { // recurr
$rate_type = $this->discount["recurr_type"];
$rate = $this->discount["recurr_rate"];
$min_cost = $this->discount["recurr_min_cost"];
$max_usage_amt = $this->discount["recurr_max_discount"];
}
if(empty($this->discounts["$discount"])) return false;
$this->discount = $this->discounts["$discount"];
if (!empty( $this->discount["date_start"] ) && $this->discount["date_start"] > time()) return 0;
if (!empty( $this->discount["date_expire"] ) && $this->discount["date_expire"] < time()) return 0;
if(!empty( $min_cost ) && $min_cost > $invoice_amt) return 0;
if( $this->discount["max_usage_account"] > 0 || $this->discount["max_usage_global"] > 0 )
if(!$this->discount_check_usage($this->discount["max_usage_account"],$this->discount["max_usage_global"], $account_id, $discount))
return 0;
if(!empty( $this->discount["avail_account_id"]) && $this->discount["avail_account_id"] != $account_id) return 0;
if($type==0 || $type==2) {
if(!empty( $this->discount["avail_account_id"]) && $this->discount["avail_account_id"] != $account_id) {
return 0;
} else {
if(!empty( $this->discount["avail_group_id"] )) {
$arr=unserialize($this->discount["avail_group_id"]);
if(is_array($arr) && count($arr) > 0 && !empty($arr[0])) {
$do=false;
global $C_auth;
for($i=0; $i<count($arr); $i++) {
if($C_auth->auth_group_by_id($arr[$i])) { $do=true; $i=count($arr); }
}
if(!$do) return 0;
}
}
}
}
if($type<2 && !empty($product_id) && !empty( $this->discount["avail_product_id"] )) {
$arr=unserialize($this->discount["avail_product_id"]);
if(is_array($arr) && count($arr) > 0 && !empty($arr[0])) {
$do=false;
for($i=0; $i<count($arr); $i++) if($arr[$i] == $product_id) { $do=true; $i=count($arr); }
if(!$do) return 0;
}
} elseif ($type>1) {
if(!empty( $this->discount["avail_tld_id"] )) {
$do=false;
$tld = $product_id;
$db = &DB();
$rstld = $db->Execute(sqlSelect($db,"host_tld","id","name=::$tld::"));
if($rstld && $rstld->RecordCount()) {
$tld_id = $rstld->fields["id"];
$arr=unserialize($this->discount["avail_tld_id"]);
if(is_array($arr) && count($arr) > 0 && !empty($arr[0])) {
for($i=0; $i<count($arr); $i++) if($arr[$i] == $tld_id) { $do=true; $i=count($arr); }
if(!$do) return 0;
}
}
}
}
if($rate_type=="0") {
$discount_amt = $rate*$prod_amt;
if(!empty($max_usage_amt) && $discount_amt > $max_usage_amt) $discount_amt = $max_usage_amt;
} else {
$discount_amt = $rate;
}
if(!empty( $max_usage_amt )) {
if ( $discount_amt + $this->discount_total > $max_usage_amt)
$discount_amt = $max_usage_amt - $this->discount_total;
}
return round($discount_amt,2);
}
/**
* Check discount usage for account/global restrictions
*/
function discount_check_usage($max_acct, $max_global, $account_id, $discount)
{
$db = &DB();
$rs = $db->Execute(sqlSelect($db,"invoice_item_discount","invoice_id,account_id","","","","DISTINCT"));
if($rs && $rs->RecordCount()) {
# Check global usage
if(!empty($max_global) && $max_global > 0) if($rs->RecordCount() >= $max_global) return false;
# Check usage by this account
if(!empty($max_acct) && $max_acct > 0) {
$i=0;
while(!$rs->EOF) {
if($rs->fields['account_id'] == $account_id) $i++;
$rs->MoveNext();
}
if($i>=$max_acct) return false;
}
}
return true;
}
function user_search($VAR) {
# Lock the user only for his billing_records:
if(!SESS_LOGGED) {
return false;
}
# Lock the account_id
$VAR['discount_avail_account_id'] = SESS_ACCOUNT;
$type = "search";
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$this->method["$type"] = explode(",", $this->method["$type"]);
$db = new CORE_database;
$db->search($VAR, $this, $type);
}
function user_search_show($VAR) {
# Lock the user only for his billing_records:
if(!SESS_LOGGED) {
return false;
}
$type = "search";
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$this->method["$type"] = explode(",", $this->method["$type"]);
$db = new CORE_database;
$db->search_show($VAR, $this, $type);
}
function search_show($VAR) {
$type = "search";
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$this->method["$type"] = explode(",", $this->method["$type"]);
$dbc = new CORE_database;
$smart = $dbc->search_show($VAR, $this, $type);
$db = &DB();
for($i=0; $i<count($smart); $i++)
{
$smart[$i]['savings'] = 0;
$smart[$i]['orders'] = 0;
$smart[$i]['revenue'] = 0;
$rs = $db->Execute($sql=sqlSelect($db,Array("invoice","invoice_item_discount"),"SUM(A.total_amt) as sum","B.invoice_id=A.id AND A.billing_status=1 AND B.discount=::{$smart[$i]['name']}::","","","DISTINCT"));
if($rs && $rs->RecordCount()) $smart[$i]['revenue'] = $rs->fields['sum'];
$rs = $db->Execute(sqlSelect($db, 'invoice_item_discount', 'invoice_id,amount', "discount=::{$smart[$i]['name']}::"));
if($rs && $rs->RecordCount() > 0) {
while(!$rs->EOF) {
$smart[$i]['savings'] += $rs->fields['amount'];
if(empty($invoices[$rs->fields['invoice_id']])) {
$smart[$i]['orders']++;
$invoices[$rs->fields['invoice_id']]=true;
}
$rs->MoveNext();
}
}
}
global $smarty;
$smarty->clear_assign('discount');
$smarty->assign('discount', $smart);
}
}
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?>