<?php
/**
 * GenerateInvoicesPage.class.php
 *
 * This file contains the definition for the GenerateInvoicesPage class.
 *
 * @package Pages
 * @author John Diamond <hide@address.com>
 * @copyright John Diamond <hide@address.com>
 * @license http://www.opensource.org/licenses/gpl-license.php GNU Public License
 */

// Include the parent class
require BASE_PATH . "include/SolidStatePage.class.php";

/**
 * GenerateInvoicesPage
 *
 * Generate an Invoice batch for all billable accounts.
 *
 * @package Pages
 * @author John Diamond <hide@address.com>
 */
class GenerateInvoicesPage extends SolidStatePage {
	/**
	 * Action
	 *
	 * Actions handled by this page:
	 *   generate_invoices (form)
	 *
	 * @param string $action_name Action
	 */
	function action( $action_name ) {
		switch ( $action_name ) {
			case "generate_invoices":
				if ( isset( $this->post['continue'] ) ) {
					// Generate Invoice Batch
					$this->generate_invoices();
				}
				break;

			default:
				// No matching action, refer to base class
				parent::action( $action_name );
				break;
		}
	}

	/**
	 * Generate Invoice Batch
	 *
	 * Generate an Invoice for each billable account during the period set
	 * in the form.
	 */
	function generate_invoices() {
		$invoice_date = $this->post['date'];
		$terms        = $this->post['terms'];
		$period_begin = $this->post['periodbegin'];
		$period_end   = $this->post['periodend'];
		$note         = $this->post['note'];

		// Get all accounts
		$accountdbo_array = load_array_AccountDBO();

		// Generate an invoice for each account
		foreach ( $accountdbo_array as $account ) {
			if ( $account->getStatus() != "Active" ||
					$account->getBillingStatus() == "Do Not Bill" ) {
				// Skip invalid, pending, and non-billable accounts
				continue;
			}

			// Create a new Invoice
			$invoice = new InvoiceDBO();
			$invoice->setAccountID( $account->getID() );
			$invoice->setDate( DBConnection::format_datetime( $invoice_date ) );
			$invoice->setPeriodBegin( DBConnection::format_datetime( $period_begin ) );
			$invoice->setPeriodEnd( DBConnection::format_datetime( $period_end ) );
			$invoice->setNote( $note );
			$invoice->setTerms( $terms );

			// Generate line items
			$invoice->generate();

			$invoiceItems = $invoice->getItems();
			if ( empty( $invoiceItems ) ) {
				// Abandon empty invoices
				continue;
			}

			// Insert invoice into database
			add_InvoiceDBO( $invoice );
		}

		// Success
		$this->setMessage( array( "type" => "[INVOICE_BATCH_CREATED]" ) );
		$this->gotoPage( "billing_invoices" );
	}

	/**
	 * Initialize Generate Invoice Page
	 */
	function init() {
		parent::init();

		if ( !isset( $this->post['periodend'] ) ) {
			// Set the end of the invoice period to be 1 month ahead of today
			$today = getdate( time() );
			$newDate = DBConnection::format_datetime( mktime( null, null, null, $today['mon']+1 ) );
			$this->smarty->assign( "nextMonth", $newDate );
		}
	}
}
?>