<?php

namespace Assetic\Filter;

use Assetic\Asset\AssetInterface;
use Assetic\Util\ProcessBuilder;

/**
 * Loads Compass files.
 *
 * @author Maxime Thirouin <maxime.thirouin@gmail.com>
 */
class CompassFilter implements FilterInterface
{
	private $compassPath;
	private $scss;
	private $unixNewlines;
	private $debugInfo;
	private $cacheLocation;
	private $noCache;
	private $force;
	private $style;
	private $quiet;
	private $boring;
	private $noLineComments;
	private $imagesDir;
	private $javascriptsDir;
	private $plugins = array();
	private $loadPaths = array();
	private $httpPath;
	private $httpImagesPath;
	private $httpJavascriptsPath;


	public function __construct($compassPath = '/usr/bin/compass')
	{
		$this->compassPath = $compassPath;
		$this->cacheLocation = sys_get_temp_dir();

		if ('cli' !== php_sapi_name()) {
		    $this->boring = true;
		}
	}


	public function setScss($scss)
	{
		$this->scss = $scss;
	}


	public function setUnixNewlines($unixNewlines)
	{
		$this->unixNewlines = $unixNewlines;
	}


	public function setDebugInfo($debugInfo)
	{
		$this->debugInfo = $debugInfo;
	}


	public function setCacheLocation($cacheLocation)
	{
		$this->cacheLocation = $cacheLocation;
	}


	public function setNoCache($noCache)
	{
		$this->noCache = $noCache;
	}


	public function setForce($force)
	{
		$this->force = $force;
	}


	public function setStyle($style)
	{
		$this->style = $style;
	}


	public function setQuiet($quiet)
	{
		$this->quiet = $quiet;
	}


	public function setBoring($boring)
	{
		$this->boring = $boring;
	}


	public function setNoLineComments($noLineComments)
	{
		$this->noLineComments = $noLineComments;
	}


	public function setImagesDir($imagesDir)
	{
		$this->imagesDir = $imagesDir;
	}


	public function setJavascriptsDir($javascriptsDir)
	{
		$this->javascriptsDir = $javascriptsDir;
	}


	public function setPlugins(array $plugins)
	{
		$this->plugins = $plugins;
	}


	public function addPlugin($plugin)
	{
		$this->plugins[] = $plugin;
	}


	public function addLoadPath($loadPath)
	{
		$this->loadPaths[] = $loadPath;
	}


	public function setHttpPath($httpPath)
	{
		$this->httpPath = $httpPath;
	}


	public function setHttpImagesPath($httpImagesPath)
	{
		$this->httpImagesPath = $httpImagesPath;
	}


	public function setHttpJavascriptsPath($httpJavascriptsPath)
	{
		$this->httpJavascriptsPath = $httpJavascriptsPath;
	}


	public function filterLoad(AssetInterface $asset)
	{
		$root = $asset->getSourceRoot();
		$path = $asset->getSourcePath();

		$loadPaths = $this->loadPaths;
		if ($root && $path) {
		    $loadPaths[] = dirname($root.'/'.$path);
		}

		// compass does not seems to handle symlink, so we use realpath()
		$tempDir = realpath(sys_get_temp_dir());

		$pb = new ProcessBuilder(array(
		    $this->compassPath,
		    'compile',
		    $tempDir,
		));
		$pb->inheritEnvironmentVariables();

		if ($this->force) {
		    $pb->add('--force');
		}

		if ($this->style) {
		    $pb->add('--output-style')->add($this->style);
		}

		if ($this->quiet) {
		    $pb->add('--quiet');
		}

		if ($this->boring) {
		    $pb->add('--boring');
		}

		if ($this->noLineComments) {
		    $pb->add('--no-line-comments');
		}

		// these two options are not passed into the config file
		// because like this, compass adapts this to be xxx_dir or xxx_path
		// whether it's an absolute path or not
		if ($this->imagesDir) {
		    $pb->add('--images-dir')->add($this->imagesDir);
		}

		if ($this->javascriptsDir) {
		    $pb->add('--javascripts-dir')->add($this->javascriptsDir);
		}

		// options in config file
		$optionsConfig = array();

		if (!empty($loadPaths)) {
		    $optionsConfig['additional_import_paths'] = $loadPaths;
		}

		if ($this->unixNewlines) {
		    $optionsConfig['sass_options']['unix_newlines'] = true;
		}

		if ($this->debugInfo) {
		    $optionsConfig['sass_options']['debug_info'] = true;
		}

		if ($this->cacheLocation) {
		    $optionsConfig['sass_options']['cache_location'] = $this->cacheLocation;
		}

		if ($this->noCache) {
		    $optionsConfig['sass_options']['no_cache'] = true;
		}

		if ($this->httpPath) {
		    $optionsConfig['http_path'] = $this->httpPath;
		}

		if ($this->httpImagesPath) {
		    $optionsConfig['http_images_path'] = $this->httpImagesPath;
		}

		if ($this->httpJavascriptsPath) {
		    $optionsConfig['http_javascripts_path'] = $this->httpJavascriptsPath;
		}

		// options in configuration file
		if (count($optionsConfig)) {
		    $config = array();
		    foreach ($this->plugins as $plugin) {
		        $config[] = sprintf("require '%s'", addcslashes($plugin, '\\'));
		    }
		    foreach ($optionsConfig as $name => $value) {
		        if (!is_array($value)) {
		            $config[] = sprintf('%s = "%s"', $name, addcslashes($value, '\\'));
		        } elseif (!empty($value)) {
		            $config[] = sprintf('%s = %s', $name, $this->formatArrayToRuby($value));
		        }
		    }

		    $configFile = tempnam($tempDir, 'assetic_compass');
		    file_put_contents($configFile, implode("\n", $config)."\n");
		    $pb->add('--config')->add($configFile);
		}

		$pb->add('--sass-dir')->add('')->add('--css-dir')->add('');

		// compass choose the type (sass or scss from the filename)
		if (null !== $this->scss) {
		    $type = $this->scss ? 'scss' : 'sass';
		} elseif ($path) {
		    // FIXME: what if the extension is something else?
		    $type = pathinfo($path, PATHINFO_EXTENSION);
		} else {
		    $type = 'scss';
		}

		$tempName = tempnam($tempDir, 'assetic_compass');
		unlink($tempName); // FIXME: don't use tempnam() here

		// input
		$input = $tempName.'.'.$type;

		// work-around for https://github.com/chriseppstein/compass/issues/748
		if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
		    $input = str_replace('\\', '/', $input);
		}

		$pb->add($input);
		file_put_contents($input, $asset->getContent());

		// output
		$output = $tempName.'.css';

		// it's not really usefull but... https://github.com/chriseppstein/compass/issues/376
		$pb->setEnv('HOME', sys_get_temp_dir());

		$proc = $pb->getProcess();
		$code = $proc->run();

		if (0 < $code) {
		    unlink($input);
		    if (isset($configFile)) {
		        unlink($configFile);
		    }

		    throw new \RuntimeException($proc->getErrorOutput().'...'.$proc->getOutput());
		}

		$asset->setContent(file_get_contents($output));

		unlink($input);
		unlink($output);
		if (isset($configFile)) {
		    unlink($configFile);
		}
	}


	public function filterDump(AssetInterface $asset)
	{
	}


	private function formatArrayToRuby($array)
	{
		$output = array();

		// does we have an associative array ?
		if (count(array_filter(array_keys($array), "is_numeric")) != count($array)) {
		    foreach ($array as $name => $value) {
		        $output[] = sprintf('    :%s => "%s"', $name, addcslashes($value, '\\'));
		    }
		    $output = "{\n".implode(",\n", $output)."\n}";
		} else {
		    foreach ($array as $name => $value) {
		        $output[] = sprintf('    "%s"', addcslashes($value, '\\'));
		    }
		    $output = "[\n".implode(",\n", $output)."\n]";
		}

		return $output;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTA5NDM0MTQ2Njg5NjE4NyA0Mzg4OTIzMzQxMzg2MTg2IDc5NTEyNTc2NzIxNTkwNDA=