<?php
error_reporting (E_ALL ^ E_NOTICE);
#$pic = $_GET['ididfor'];
#if (preg_match('/[^a-zA-Z0-9.&()\/@\'_ -]/', $pic)) die("Filename problem");
$picfile = "idid.png";
$picfile = "l2.png";
$picfile = "covers/".preg_replace("/[^\w.-]/", "", $_GET['c']);;

$ht = $_GET['ht']; # for google 90px height

$title = $_GET['t'];


$i = 0;
$lineheight = 15;
$miny = 120 + $i*$lineheight;

if (!($minx = $_GET['x']) || $minx < 500) $minx = 600;
$square = 0;
if ($_GET['sq']) $square = 1;
if ($square) $minx = 110;

$topmarginheight = 15;

header("Content-type: image/png");

if (substr($picfile, -3) == "jpg")
	$im = @imagecreatefromjpeg($picfile);
else if (substr($picfile, -3) == "gif")
	$im = @imagecreatefromgif($picfile);
else if (substr($picfile, -3) == "png")
	$im = @imagecreatefrompng($picfile);
if (!$im) die("Cannot Initialize GD image stream for image");

list($x,$y) = getimagesize($picfile);
$newy = $miny;
$newx = $x*($newy/$y);

//XXX needless sanity test, should always end up using minxy
$ididx = $newx; if ($ididx < $minx) $ididx = $minx;
$ididy = $newy; if ($ididy < $miny) $ididy = $miny;

$darkcyan = imagecolorallocate($im, 0, 0x80, 0x80); // darkcyan
$springgreen = imagecolorallocate($im, 0, 0xff, 0x7f); // springgreen
$hintofgreen = imagecolorallocate($im, 0xe8, 0xff, 0xe8); 
//$sitebg = imagecolorallocate($im, 0x4D, 0x79, 0x42); 
//$aqua = imagecolorallocate($im, 0, 0xff, 0xff); // aqua
$white = imagecolorallocate($im, 0xff, 0xff, 0xff);
$black = imagecolorallocate($im, 0, 0, 0);

$ididimg = imagecreatetruecolor($ididx,$ididy)
    or die("Cannot Initialize new GD image stream");

srand(time()*getmypid());
if ($bg = $_GET['bg']) {
	if (strlen($bg) > 7) { #has mult colors, pick one
		$bglist = split(',', $bg);
		$rnd = rand(0, count($bglist)-1);
		$bg = $bglist[$rnd];
	}
	$bg = hexdec($bg);
	$bgcolor = imagecolorallocate($im, ($bg>>16)&0xff, ($bg>>8)&0xff, $bg&0xff);
	$R = ($bg>>16)&0xff; $G = ($bg>>8)&0xff; $B = $bg&0xff;
	if ($R < 0x40 && $G < 0x40 && $B < 0x40) $darkbg = 1;
}
else
	$bgcolor = $white;

if ($tc = $_GET['tc']) {
	if (strlen($tc) > 7) { #has mult colors, pick one
		$tclist = split(',', $tc);
		$rnd = rand(0, count($tclist)-1);
		$tc = $tclist[$rnd];
	}
	$tc = hexdec($tc);
	$tipcolor = imagecolorallocate($im, ($tc>>16)&0xff, ($tc>>8)&0xff, $tc&0xff);
	$R = ($tc>>16)&0xff; $G = ($tc>>8)&0xff; $B = $tc&0xff;
	if ($R < 0x40 && $G < 0x40 && $B < 0x40) $darktc = 1;
}
else
	$tipcolor = $springgreen;

if ($_GET['trans'] == 1)
	imagecolortransparent($ididimg, $bgcolor);

$menu_color = $black;
//if ($bgcolor == $black) $menu_color = $white;
if ($darkbg) $menu_color = $white;

imagefilledrectangle($ididimg, 0, 0, $ididx, $ididy, $bgcolor /*$hintofgreen*/);
//imagecopy($ididimg, $bgim, 0, $topmarginheight, 0, 0, 400, 100);
$logox = $newx*.90; $logoy = $newy*.90;
$maxlogox = 80;
if ($newx > $maxlogox) {
	$logoy = $logoy/($logox/$maxlogox);
	$logox = $maxlogox;
}
if ($ht > 0) {   # scale logo if for google ad slot
	$logox *= ($ht/$miny);
	$logoy *= ($ht/$miny);
}
imagecopyresampled($ididimg, $im, 7,7,0,0, $logox, $logoy, $x, $y);

if (!$square) {

	## get a random tip
	#$tips = file("tips.list");
	#$rnd = rand(0, count($tips)-1);
	#list($tipfn, $tip) = split('\|', $tips[$rnd], 2);

	# ensure is a valid tip filename
	# good for blurbs in future:
	#if (preg_match('/^tips\/\w+\/\d+$/', $_GET['t'])) {
	#	$tipf = file($_GET['t']);
	#	$tip = $tipf[0];
	#}
	#else
		$tip = "Read \"$title\" and other ebooks by Andrew Burt.";
		$tip = "Read \"$title\"\n               by Andrew Burt";
#$tip = $_GET['x']." $minx $tip";

	$textleftmargin = $logox+10;

	$maxtiplen = 40;
	$bbox = imageftbbox(10, 0, 'georgiab.ttf', "$tip");
	if (abs($bbox[2]-$bbox[0]) > $minx-$textleftmargin) {
	#was: if (strlen($tip) > $maxtiplen) {
		$tip = substr_replace($tip, "\n     ", strrpos(substr($tip, 0, strlen($tip)/2), " "), 1);
		//$tip2 = substr($tip, strrpos(substr($tip, 70), " "));
		//$tip = substr($tip, 0, strlen($tip)-strlen($tip2));
	}

	// fonts: VeraBd, Vera, comic, comicbd
	$tipfontsize = 11.5; if (strlen($title) > 40) $tipfontsize = 11;
	imagettftext($ididimg, $tipfontsize, 0, $textleftmargin, $topmarginheight+13, $tipcolor, 'georgiab.ttf',  "$tip");

#	imagettftext($ididimg, 8, 0, $textleftmargin, $miny-40, $menu_color, 'Vera.ttf',  "      Get this ebook   |   Read More   |  Share  |  Discuss");
	imagettftext($ididimg, 8, 0, $textleftmargin, $miny-40, $menu_color, 'Vera.ttf',  "      Get this ebook   |   Read More   |  Share  |  Kindle");

	#$pitch = "Spread the word. Save the planet.";
	if (rand(0,100)+date("n")*2 >= 50) // more 'gift' toward xmas
	    $pitch = "Give an ebook as a gift - signed and personally inscribed!";
	else
	    $pitch = "Read an ebook, save a tree.";
	$pitch_fontsize = 9;
	$pitch_font = 'Vera.ttf';
	$pitch_color = $tipcolor;
	$bbox = imageftbbox($pitch_fontsize, 0, $pitch_font, $pitch);
	$pitchwid = abs($bbox[2]-$bbox[0]);
	imagettftext($ididimg, $pitch_fontsize, 0, $ididx-$pitchwid-10, $ididy-5, $pitch_color, $pitch_font,  $pitch);
}

imagepng($ididimg);
imagedestroy($im);
//imagedestroy($bgim);
imagedestroy($ididimg);
?>