/**
* Creates a new, unsaved line item, but if it's a ticket line item
* with a total of 0, or a subtotal of 0, returns null instead
* @param EEI_Line_Item $line_item
* @param int $ticket_children
* @return \EEI_Line_Item
*/
protected function _filter_zero_subtotal_line_item(EEI_Line_Item $line_item, $ticket_children = 0)
{
if ($line_item->type() === EEM_Line_Item::type_sub_total && $ticket_children === 0) {
return null;
}
return $line_item;
}
/**
* EE_Line_Item_Filter_Processor constructor.
* @param \EE_Line_Item_Filter_Collection $line_item_filters
* @param \EEI_Line_Item $grand_total_line_item
* @throws \EE_Error
*/
public function __construct(EE_Line_Item_Filter_Collection $line_item_filters, EEI_Line_Item $grand_total_line_item)
{
$this->line_item_filters = $line_item_filters;
if ($grand_total_line_item->type() !== EEM_Line_Item::type_total) {
throw new EE_Error(__('A Line Item of the type total is required', 'event_espresso'));
}
$this->grand_total_line_item = $this->clone_and_reset_line_item_tree($grand_total_line_item);
}
/**
* Adjusts quantities for line items for tickets according to the registrations provided
* in the constructor
* @param EEI_Line_Item $line_item
* @return EEI_Line_Item
*/
protected function _filter_billable_line_item(EEI_Line_Item $line_item)
{
// is this a ticket ?
if ($line_item->type() === EEM_Line_Item::type_line_item && $line_item->OBJ_type() == 'Ticket') {
// if this ticket is billable at this moment, then we should have a positive quantity
if (isset($this->_counts_per_line_item_code[$line_item->code()])) {
// set quantity based on number of billable registrations for this ticket
$quantity = $this->_counts_per_line_item_code[$line_item->code()];
} else {
$quantity = 0;
}
$line_item->set_quantity($quantity);
$line_item->set_total($line_item->unit_price() * $line_item->quantity());
}
return $line_item;
}
/**
* Adds the line item as a child to this line item. If there is another child line
* item with the same LIN_code, it is overwritten by this new one
* @param EEI_Line_Item $line_item
* @param bool $set_order
* @return bool success
* @throws \EE_Error
*/
function add_child_line_item(EEI_Line_Item $line_item, $set_order = true)
{
// should we calculate the LIN_order for this line item ?
if ($set_order || $line_item->order() === null) {
$line_item->set_order(count($this->children()));
}
if ($this->ID()) {
//check for any duplicate line items (with the same code), if so, this replaces it
$line_item_with_same_code = $this->get_child_line_item($line_item->code());
if ($line_item_with_same_code instanceof EE_Line_Item && $line_item_with_same_code !== $line_item) {
$this->delete_child_line_item($line_item_with_same_code->code());
}
$line_item->set_parent_ID($this->ID());
if ($this->TXN_ID()) {
$line_item->set_TXN_ID($this->TXN_ID());
}
return $line_item->save();
} else {
$this->_children[$line_item->code()] = $line_item;
if ($line_item->parent() != $this) {
$line_item->set_parent($this);
}
return TRUE;
}
}
