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khosb/modules/invoice/classes/model/invoice.php

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<?php defined('SYSPATH') or die('No direct access allowed.');
/**
* This class provides invoice capabilities.
*
* @package OSB
* @subpackage Invoice
* @category Models
* @author Deon George
* @copyright (c) 2010 Open Source Billing
* @license http://dev.osbill.net/license.html
*/
class Model_Invoice extends ORMOSB {
private $invoice_items = array();
protected $_belongs_to = array(
'account'=>array()
);
protected $_has_many = array(
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'invoice_item'=>array('far_key'=>'id'),
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'invoice_item_tax'=>array(),
'service'=>array('through'=>'invoice_item'),
'payment'=>array('through'=>'payment_item'),
'payment_item'=>array('far_key'=>'id'),
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);
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protected $_sorting = array(
'id'=>'DESC',
);
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/**
* @var array Filters to render values properly
*/
protected $_filters = array(
// @todo This rounding should be a global configuration
'total_amt'=>array('round'=>array('2')),
);
protected $_callbacks = array(
'id'=>array('get_next_id'),
'total_amt'=>array('calc_total'),
'tax_amt'=>array('calc_tax'),
);
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protected $_display_filters = array(
'date_orig'=>array(
array('Config::date',array(':value')),
),
'due_date'=>array(
array('Config::date',array(':value')),
),
'billed_amt'=>array(
array('Currency::display',array(':value')),
),
'credit_amt'=>array(
array('Currency::display',array(':value')),
),
'status'=>array(
array('StaticList_YesNo::display',array(':value')),
),
'total_amt'=>array(
array('Currency::display',array(':value')),
),
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);
/**
* Display the Invoice Number
*/
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public function id() {
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return sprintf('%06s',$this->id);
}
/**
* Display the Invoice Reference Number
*/
public function refnum() {
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return sprintf('%s-%06s',$this->account->accnum(),$this->id);
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}
/**
* Display the amount due
*/
public function due($format=FALSE) {
// If the invoice is active calculate the due amount
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$result = $this->status ? round($this->total_amt-$this->credit_amt-$this->billed_amt,Kohana::config('config.currency_format')) : 0;
return $format ? Currency::display($result) : $result;
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}
/**
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* Return a list of invoice items for this invoice.
*
* We only return the items, if the invoice hasnt been changed.
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*/
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public function items() {
return ($this->loaded() AND ! $this->_changed) ? $this->invoice_item->order_by('service_id,item_type,module_id')->find_all() : NULL;
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}
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/**
* Return the subtotal of all items
*/
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public function subtotal($format=FALSE) {
$result = 0;
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foreach ($this->items() as $ito)
$result += $ito->subtotal();
return $format ? Currency::display($result) : $result;
}
public function tax($format=FALSE) {
$result = 0;
foreach ($this->items() as $ito)
$result += $ito->tax_amt;
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return $format ? Currency::display($result) : $result;
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}
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/**
* Return the total of all items
*/
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public function total($format=FALSE) {
$result = 0;
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foreach ($this->items() as $ito)
$result += $ito->total();
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// Reduce by any credits
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$result -= $this->credit_amt;
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return $format ? Currency::display($result) : $result;
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}
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public function payments() {
return ($this->loaded() AND ! $this->_changed) ? $this->payment_item->find_all() : NULL;
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}
public function payments_total($format=FALSE) {
$result = 0;
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foreach ($this->payments() as $po)
$result += $po->alloc_amt;
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return $format ? Currency::display($result) : $result;
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}
/**
* Return a list of our main invoice items (item_id=0)
*/
public function items_main() {
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return ($this->loaded() AND ! $this->_changed) ? $this->invoice_item->where('item_type','=',0)->find_all() : NULL;
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}
/**
* Return a list of our sub invoice items (item_id!=0)
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*
* @param sid int Service ID
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*/
public function items_sub($sid) {
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return ($this->loaded() AND ! $this->_changed) ? $this->invoice_item->where('service_id','=',$sid)->and_where('item_type','<>',0)->find_all() : NULL;
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}
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/**
* Summarise the items on an invoice
*/
public function items_summary() {
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$result = array();
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foreach ($this->items_main() as $ito) {
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$unique = TRUE;
$t = $ito->product->name();
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if (! isset($result[$t])) {
$result[$t]['quantity'] = 0;
$result[$t]['subtotal'] = 0;
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}
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$result[$t]['quantity'] += $ito->quantity;
$result[$t]['subtotal'] += $ito->subtotal();
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}
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return $result;
}
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/**
* Find all the invoice items relating to a service
*
* @param int Service ID
*/
private function items_service($sid) {
return $this->invoice_item->where('service_id','=',$sid)->find_all();
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}
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/**
* Calculate the total for items for a service
*/
public function items_service_total($sid) {
$total = 0;
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foreach ($this->items_service($sid) as $ito)
$total += $ito->total();
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return $total;
}
/**
* Calculate the tax of items for a service
*/
public function items_service_tax($sid) {
$total = 0;
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foreach ($this->items_service($sid) as $ito)
$total += $ito->tax_amt;
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return $total;
}
/**
* Return a list of items based on a sort criteria
*/
public function sorted_service_items($index) {
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$summary = array();
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foreach ($this->items() as $ito) {
$key = $ito->service->$index;
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if (! isset($summary[$key]['items'])) {
$summary[$key]['items'] = array();
$summary[$key]['total'] = 0;
}
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// Only record items with item_type=0
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if ($ito->item_type == 0)
array_push($summary[$key]['items'],$ito);
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$summary[$key]['total'] += $ito->total();
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}
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return $summary;
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}
/**
* Return a list of taxes used on this invoice
*/
public function tax_summary() {
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$summary = array();
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foreach ($this->items() as $ito) {
foreach ($ito->invoice_item_tax->find_all() as $item_tax) {
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if (! isset($summary[$item_tax->tax_id]))
$summary[$item_tax->tax_id] = $item_tax->amount;
else
$summary[$item_tax->tax_id] += $item_tax->amount;
}
}
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return $summary;
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}
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/**
* Add an item to an invoice
*/
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public function add_item() {
$c = count($this->invoice_items);
$this->invoice_items[$c] = ORM::factory('invoice_item');
return $this->invoice_items[$c];
}
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public function save(Validation $validation = NULL) {
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// Save the invoice
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parent::save($validation);
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// Need to save the associated items and their taxes
if ($this->saved()) {
$tax_amt = 0;
$discount_amt = 0;
foreach ($this->items() as $invoice_item) {
$invoice_item->invoice_id = $this->id;
if (! $invoice_item->check()) {
// @todo Mark invoice as cancelled and write a memo, then...
throw new Kohana_Exception('Problem saving invoice_item for invoice :invoice - Failed check()',array(':invoice'=>$invoice->id));
}
$invoice_item->save();
if (! $invoice_item->saved()) {
// @todo Mark invoice as cancelled and write a memo, then...
throw new Kohana_Exception('Problem saving invoice_item for invoice :invoice - Failed save()',array(':invoice'=>$invoice->id));
}
// @todo Need to save tax information
// @todo Need to save discount information
}
} else
throw new Kohana_Exception('Couldnt save invoice for some reason?');
}
public function calc_total(Validate $array, $field) {
$array[$field] = 0;
// @todo Rounding here should come from a global config
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foreach ($this->invoice_items as $ito)
$array[$field] += round($ito->price_base+$ito->price_setup,2);
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$this->_changed[$field] = $field;
}
public function calc_tax(Validate $array, $field) {
$array[$field] = 0;
// @todo Rounding here should come from a global config
// @todo tax should be evaluated per item
// @todo tax parameters should come from user session
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foreach ($this->invoice_items as $ito)
$array[$field] += round(Tax::total(61,NULL,$ito->price_base+$ito->price_setup),2);
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$this->_changed[$field] = $field;
}
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/**
* Check the reminder value
*/
public function remind($key) {
if (! $this->loaded())
return NULL;
if (! trim($this->reminders))
return FALSE;
if (! preg_match('/^a:/',$this->reminders))
throw new Kohana_Exception('Reminder is not an array? (:reminder)',array(':remind',$this->reminders));
$remind = unserialize($this->reminders);
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if (isset($remind[$key]))
return (is_array($remind[$key])) ? end($remind[$key]) : $remind[$key];
else
return FALSE;
}
public function set_remind($key,$value,$add=FALSE) {
if (! $this->loaded())
throw new Kohana_Exception('Cant call :method when a record not loaded.',array(':method',__METHOD__));
if (! trim($this->reminders)) {
$remind = array();
} else {
if (! preg_match('/^a:/',$this->reminders))
throw new Kohana_Exception('Reminder is not an array? (:reminder)',array(':remind',$this->reminders));
$remind = unserialize($this->reminders);
}
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// If our value is null, we'll remove it.
if (is_null($value) AND isset($remind[$key]))
unset($remind[$key]);
elseif ($add)
$remind[$key][] = $value;
else
$remind[$key] = $value;
$this->reminders = serialize($remind);
$this->save();
return $this->saved();
}
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/** LIST FUNCTIONS **/
private function _list_due() {
// @todo This rounding should be a system configuration
return $this->where('round(total_amt-ifnull(credit_amt,0),2)','>','=billed_amt')
->and_where('status','=',1)
->order_by('due_date,account_id,id');
}
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/**
* Identify all the invoices that are due
*/
public function list_overdue($time=NULL) {
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if (is_null($time))
$time = time();
// @todo This rounding should be a system configuration
return $this->_list_due()
->and_where('due_date','<=',$time)
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->find_all();
}
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/**
* Return a list of invoices that are over their due date with/without auto billing
*/
public function list_overdue_billing($time=NULL,$billing=FALSE) {
$return = array();
foreach ($this->list_overdue($time) as $io) {
$i = FALSE;
foreach ($io->service->find_all() as $so)
if (($billing AND $so->account_billing_id) OR (! $billing AND ! $so->account_billing_id)) {
array_push($return,$io);
break;
}
}
return $return;
}
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/**
* Return a list of invoices that are due, excluding overdue.
*/
public function list_due($time=NULL) {
if (is_null($time))
return $this->_list_due()
->and_where('due_date','>',time())
->find_all();
else
return $this->_list_due()
->and_where('due_date','<=',$time)
->and_where('due_date','>',time())
->find_all();
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}
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}
?>