<?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
 *
 * Originally authored by Joseph Benden
 * Modifications 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
 * @author Tony Landis <tony@agileco.com>
 * @package AgileBill
 * @subpackage Module:Invoice
 */

define('FPDF_FONTPATH',PATH_INCLUDES.'pdf/font/');
require_once(PATH_INCLUDES.'pdf/fpdi.php');
require_once(PATH_INCLUDES.'pdf/fpdf_tpl.php');
require_once(PATH_INCLUDES.'pdf/fpdf.php');

/**
 * PDF Invoice Base
 *
 * @package AgileBill
 * @subpackage Module:Invoice
 */
abstract class pdf_invoice_base extends fpdi {
	protected $billToCompany = true;
	protected $itemsSummaryMax = 16;
	protected $itemsPreviousMax = 5;
	protected $news = '';
	protected $pageType = 'blank';
	protected $show_itemized = true;
	protected $show_service_range = false;
	private $invoiceCurrency = '$';
	private $invoiceDecimals = 2;

	# Store previous invoices due
	private $itemsPrevious = array();
	# Stores the invoice items
	protected $invoice;
	protected $itemsFull;
	protected $account;
	# Iteration of drawing the items on the invoice
	protected $iteration;
	# Store the date range, that the invoice covers
	protected $dateRange;

	public function __construct($inv) {
		parent::__construct();

		$this->SetCreator('Open Source Billing');
		$this->SetAuthor($inv->print['site']['NAME']);
		$this->SetTitle(sprintf('%s Invoice',$inv->print['site']['NAME']));
		$this->SetSubject(sprintf('Invoice #%06s',$inv->getPrintInvoiceNum()));
		$this->SetKeywords($inv->getPrintInvoiceID());
		$this->SetAutoPageBreak(TRUE,25);
		$this->SetDisplayMode('fullwidth');

		return $this;
	}

	public function load_setup($rs=false) {
		if (! $rs) {
			$db =& DB();
			$rs = $db->Execute(sqlSelect($db,'setup_invoice','*',''));
		}

		$this->billToCompany = $rs->fields['bill_to_company'];
		$this->invoiceCurrency = $rs->fields['invoice_currency'];
		$this->invoiceDecimals = $rs->fields['invoice_decimals'];
		$this->itemsSummaryMax = $rs->fields['items_summary_max'];
		$this->news = $rs->fields['news'];
		$this->pageType = $rs->fields['page_type'];
		$this->show_itemized = $rs->fields['invoice_show_itemized'];
		$this->show_service_range = $rs->fields['invoice_show_service_dates'];
	}

	abstract public function drawCompanyLogo();
	abstract public function drawCompanyAddress($inv);
	abstract public function drawInvoiceHeader($inv);

	/**
	 * Enable re-iteration of the invoices items, so that they can be displayed many ways
	 */
	abstract public function drawLineItems_pre($iteration);

	/**
	 * This is called for each line item.
	 */
	abstract public function drawLineItems($db,$line,$invnum);

	/**
	 * Draws the summary on the first page
	 */
	abstract public function drawSummaryLineItems($inv);
	abstract public function drawPaymentMethods($inv);

	public function drawRemittenceStub() {}
	public function drawCustom() {}
	public function drawInvoiceDueNotice() {}
	public function drawInvoicePaidNotice() {}
	public function setLateFeeNotice() {}

	/**
	 * Get a blank invoice template
	 */
	public function getTemplate() {
		return PATH_THEMES.DEFAULT_THEME.'/invoice/invoice-'.$this->pageType.'.pdf';
	}

	/**
	 * Assigns the invoice fields to this object.
	 */
	public function setInvoiceFields($flds) {
		$this->invoice = $flds;
	}

	/**
	 * Assigns the account fields to this object.
	 */
	public function setAccountFields($flds) {
		$this->account = $flds;
	}

	public function setItemsFull($items) {
		$this->itemsFull = $items;
	}

	public function setItemsPrevious($items) {
		$this->itemsPrevious = $items;
	}

	public function setDateRange($periodStart,$periodEnd) {
		$this->dateRange = sprintf('%s - %s',date(UNIX_DATE_FORMAT,$periodStart),date(UNIX_DATE_FORMAT,$periodEnd));
	}

	public function setCurrency($currency) {
		$this->invoiceCurrency = $currency;
	}

	public function setDecimals($decimals) {
		$this->invoiceDecimals = $decimals;
	}

	/**
	 * Render an amount into a currency display
	 */
	protected function _currency($num) {
		global $C_list;

		if ($this->invoiceDecimals>3)
			return $this->invoiceCurrency.number_format($num,$this->invoiceDecimals);
		else
			return $C_list->format_currency_num($num,$this->invoice['actual_billed_currency_id']);
	}

	/**
	 * Override fpdf functions
	 */
	public function _putpages() {
		$nb = $this->page;
		if (! empty($this->AliasNbPages)) {
			//Replace number of pages
			for ($n=1;$n<=$nb;$n++)
				$this->pages[$n]=($this->compress) ? gzcompress(str_replace($this->AliasNbPages,$nb,gzuncompress($this->pages[$n]))) : str_replace($this->AliasNbPages,$nb,$this->pages[$n]) ;
		}

		if ($this->DefOrientation=='P') {
			$wPt=$this->fwPt;
			$hPt=$this->fhPt;
		} else {
			$wPt=$this->fhPt;
			$hPt=$this->fwPt;
		}

		$filter=($this->compress) ? '/Filter /FlateDecode ' : '';
		for($n=1;$n<=$nb;$n++) {
			//Page
			$this->_newobj();
			$this->_out('<</Type /Page');
			$this->_out('/Parent 1 0 R');
			if (isset($this->OrientationChanges[$n]))
				$this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]',$hPt,$wPt));
			$this->_out('/Resources 2 0 R');
			if(isset($this->PageLinks[$n])) {
				//Links
				$annots='/Annots [';
				foreach($this->PageLinks[$n] as $pl) {
					$rect=sprintf('%.2f %.2f %.2f %.2f',$pl[0],$pl[1],$pl[0]+$pl[2],$pl[1]-$pl[3]);
					$annots.='<</Type /Annot /Subtype /Link /Rect ['.$rect.'] /Border [0 0 0] ';
					if(is_string($pl[4]))
						$annots.='/A <</S /URI /URI '.$this->_textstring($pl[4]).'>>>>';
					else {
						$l=$this->links[$pl[4]];
						$h=isset($this->OrientationChanges[$l[0]]) ? $wPt : $hPt;
						$annots.=sprintf('/Dest [%d 0 R /XYZ 0 %.2f null]>>',1+2*$l[0],$h-$l[1]*$this->k);
					}
				}
				$this->_out($annots.']');
			}
			$this->_out('/Contents '.($this->n+1).' 0 R>>');
			$this->_out('endobj');
			//Page content
			$this->_newobj();
			$this->_out('<<'.$filter.'/Length '.strlen($this->pages[$n]).'>>');
			$this->_putstream($this->pages[$n]);
			$this->_out('endobj');
		}

		//Pages root
		$this->offsets[1]=strlen($this->buffer);
		$this->_out('1 0 obj');
		$this->_out('<</Type /Pages');
		$kids='/Kids [';
		for ($i=0;$i<$nb;$i++)
			$kids.=(3+2*$i).' 0 R ';
		$this->_out($kids.']');
		$this->_out('/Count '.$nb);
		$this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]',$wPt,$hPt));
		$this->_out('>>');
		$this->_out('endobj');
	}

	public function _endpage() {
		//End of page contents
		$this->pages[$this->page] = ($this->compress) ? gzcompress($this->pages[$this->page]) : $this->pages[$this->page];
		$this->state=1;
	}

	protected function RoundedRect($x,$y,$w,$h,$r,$style='') {
		$k = $this->k;
		$hp = $this->h;

		if ($style=='F')
			$op = 'f';
		elseif ($style=='FD' || $style=='DF')
			$op = 'B';
		else
			$op = 'S';

		$MyArc = 4/3*(sqrt(2)-1);
		$this->_out(sprintf('%.2f %.2f m',($x+$r)*$k,($hp-$y)*$k));
		$xc = $x+$w-$r ;
		$yc = $y+$r;
		$this->_out(sprintf('%.2f %.2f l',$xc*$k,($hp-$y)*$k));

		$this->_Arc($xc+$r*$MyArc,$yc-$r,$xc+$r,$yc-$r*$MyArc,$xc+$r,$yc);
		$xc = $x+$w-$r;
		$yc = $y+$h-$r;
		$this->_out(sprintf('%.2f %.2f l',($x+$w)*$k,($hp-$yc)*$k));

		$this->_Arc($xc+$r,$yc+$r*$MyArc,$xc+$r*$MyArc,$yc+$r,$xc,$yc+$r);
		$xc = $x+$r;
		$yc = $y+$h-$r;
		$this->_out(sprintf('%.2f %.2f l',$xc*$k,($hp-($y+$h))*$k));

		$this->_Arc($xc-$r*$MyArc,$yc+$r,$xc-$r,$yc+$r*$MyArc,$xc-$r,$yc);
		$xc = $x+$r;
		$yc = $y+$r;
		$this->_out(sprintf('%.2f %.2f l',($x)*$k,($hp-$yc)*$k));

		$this->_Arc($xc-$r,$yc-$r*$MyArc,$xc-$r*$MyArc,$yc-$r,$xc,$yc-$r);
		$this->_out($op);
	}

	private function _Arc($x1,$y1,$x2,$y2,$x3,$y3) {
		$h = $this->h;
		$this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c ',
			$x1*$this->k,($h-$y1)*$this->k,$x2*$this->k,($h-$y2)*$this->k,$x3*$this->k,($h-$y3)*$this->k));
	}

	protected function Rotate($angle,$x=-1,$y=-1) {
		if ($x==-1)
			$x = $this->x;
		if ($y==-1)
			$y = $this->y;
		if ($this->angle!=0)
			$this->_out('Q');
		$this->angle = $angle;

		if ($angle != 0) {
			$angle *= M_PI/180;
			$c = cos($angle);
			$s = sin($angle);
			$cx = $x*$this->k;
			$cy = ($this->h-$y)*$this->k;
			$this->_out(sprintf('q %.5f %.5f %.5f %.5f %.2f %.2f cm 1 0 0 1 %.2f %.2f cm',$c,$s,-$s,$c,$cx,$cy,-$cx,-$cy));
		}
	}

	/**
	 * Add a watermark to the PDF
	 */
	public function addWaterMark($text) {
		$this->SetFont('arial','B',50);
		$this->SetTextColor(203,203,203);
		$this->Rotate(0);
		$this->Text(10,50,$text);
		$this->Rotate(0);
		$this->SetTextColor(0,0,0);
	}
}
?>