<?php

/*

 * This file is part of the Assetic package, an OpenSky project.

 *

 * (c) 2010-2011 OpenSky Project Inc

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

use Assetic\Factory\AssetFactory;

use Assetic\Util\TraversableString;

/**

 * Initializes the global Assetic object.

 *

 * @param AssetFactory $factory The asset factory

 */

function assetic_init(AssetFactory $factory)

{

    global $_assetic;

    $_assetic = new stdClass();

    $_assetic->factory = $factory;

}

/**

 * Returns an array of javascript URLs.

 *

 * @param array|string $inputs  Input strings

 * @param array|string $filters Filter names

 * @param array        $options An array of options

 *

 * @return array An array of javascript URLs

 */

function assetic_javascripts($inputs = array(), $filters = array(), array $options = array())

{

    if (!isset($options['output'])) {

        $options['output'] = 'js/*.js';

    }

    return _assetic_urls($inputs, $filters, $options);

}

/**

 * Returns an array of stylesheet URLs.

 *

 * @param array|string $inputs  Input strings

 * @param array|string $filters Filter names

 * @param array        $options An array of options

 *

 * @return array An array of stylesheet URLs

 */

function assetic_stylesheets($inputs = array(), $filters = array(), array $options = array())

{

    if (!isset($options['output'])) {

        $options['output'] = 'css/*.css';

    }

    return _assetic_urls($inputs, $filters, $options);

}

/**

 * Returns an image URL.

 *

 * @param string       $input   An input

 * @param array|string $filters Filter names

 * @param array        $options An array of options

 *

 * @return string An image URL

 */

function assetic_image($input, $filters = array(), array $options = array())

{

    if (!isset($options['output'])) {

        $options['output'] = 'images/*';

    }

    $urls = _assetic_urls($input, $filters, $options);

    return current($urls);

}

/**

 * Returns an array of asset urls.

 *

 * @param array|string $inputs  Input strings

 * @param array|string $filters Filter names

 * @param array        $options An array of options

 *

 * @return array An array of URLs

 */

function _assetic_urls($inputs = array(), $filters = array(), array $options = array())

{

    global $_assetic;

    if (!is_array($inputs)) {

        $inputs = array_filter(array_map('trim', explode(',', $inputs)));

    }

    if (!is_array($filters)) {

        $filters = array_filter(array_map('trim', explode(',', $filters)));

    }

    $coll = $_assetic->factory->createAsset($inputs, $filters, $options);

    $debug = isset($options['debug']) ? $options['debug'] : $_assetic->factory->isDebug();

    $combine = isset($options['combine']) ? $options['combine'] : !$debug;

    $one = $coll->getTargetPath();

    if ($combine) {

        $many = array();

        foreach ($coll as $leaf) {

            $many[] = $leaf->getTargetPath();

        }

    } else {

        $many = array($one);

    }

    return new TraversableString($one, $many);

}