<?php
if (!isset($argv[1]) || !isset($argv[2])) {
	echo " USAGE:\n";
	echo "   ".basename(__FILE__)." [url to repository] [revision numbers]\n";
	echo "   Revision numbers are taken in the same format as SVN (1:10, 1:HEAD etc)\n";
	exit;
}

exec('svn diff --summarize '.escapeshellarg($argv[1]).' --revision '.escapeshellarg($argv[2]), $fileList);

$changedFiles = array(
	'modified' => array(),
	'templates' => array(),
	'added' => array(),
	'deleted' => array()
);

if (substr($argv[1], -1) != '/') {
	$argv[1] .= '/';
}

foreach ($fileList as $file) {
	if (!trim($file)) {
		continue;
	}
	$file = trim($file);
	$file = str_replace($argv[1], '', $file);
	$fileName = preg_replace('#^[A-Z]+\s+#i', '', $file, 1);
	if ($fileName == '.') {
		continue;
	}
	if (substr($file, 0, 1) == 'M') {
		$status = 'modified';
	}
	else if (substr($file, 0, 1) == 'A') {
		$status = 'added';
	}
	else if (substr($file, 0, 1) == 'D') {
		$status = 'deleted';
	}
	else {
		$status = 'modified';
	}

	if ($fileName == 'templates') {
		continue;
	}
	else if (substr($fileName, 0, 10) == 'templates/') {
		$templateBits = explode('/', $fileName, 3);
		$template = $templateBits[1];

		if ($template == '__emails') {
			$changedFiles[$status][] = $fileName;
			continue;
		}

		$changedFiles['templates'][$template][$status][] = $fileName;
	}
	else {
		$changedFiles[$status][] = $fileName;
	}
}

// Sort the list
foreach($changedFiles as $type => &$files) {
	if($type == 'templates') {
		uksort($files, 'cmp_templates');
		foreach ($files as &$statusFiles) {
			foreach ($statusFiles as &$templateFiles) {
				uasort($templateFiles, 'cmp');
			}
		}
	}
	else {
		uasort($files, 'cmp');
	}
}

if (!empty($changedFiles['modified']) || !empty($changedFiles['deleted'])) {
	echo "Changed Files:\n";
}

foreach ($changedFiles['deleted'] as $file) {
	echo "\t".$file." (Deleted)\n";
}
echo "\n";
foreach ($changedFiles['modified'] as $file) {
	echo "\t".$file."\n";
}

if (!empty($changedFiles['added'])) {
	echo "\n";
	echo "Files Added:\n";
	foreach ($changedFiles['added'] as $file) {
		echo "\t".$file."\n";
	}
}

echo "\n";
if (!empty($changedFiles['templates'])) {
	echo "Template Changes:\n";
}

foreach ($changedFiles['templates'] as $template => $changes) {
	echo "\t".$template."\n";
	if (isset($changes['added'])) {
		foreach ($changes['added'] as $file) {
			echo "\t\t".$file." (Added)\n";
		}
		echo "\n";
	}
	if (isset($changes['deleted'])) {
		foreach ($changes['deleted'] as $file) {
			echo "\t\t".$file." (Deleted)\n";
		}
		echo "\n";
	}
	if (isset($changes['modified'])) {
		foreach ($changes['modified'] as $file) {
			echo "\t\t".$file."\n";
		}
		echo "\n";
	}
}

/**
 * Helper functions!
 */
function cmp($a, $b)
{
	$a = strtolower($a);
	$b = strtolower($b);
	if ($a == $b) {
		return 0;
	}
	return ($a < $b) ? -1 : 1;
}

function cmp_templates($a, $b)
{
	if ($a == 'default') {
		return -1;
	}

	return cmp($a, $b);
}