<?php

require_once(dirname(__FILE__) . '/../ComicPressBackend.inc');

class ComicPressBackendAttachment extends ComicPressBackend {
	var $root_id = 'attachment';

	function generate_from_post($post) {
		$result = array();
		if (is_object($post)) {
			if (isset($post->ID)) {
				$children = get_children(array(
		      'post_parent' => $post->ID,
		      'post_type' => 'attachment',
		      'post_mime_type' => 'image'
		    ));

		    if (!empty($children)) {
		    	foreach ($children as $child) {
            $meta = get_post_meta($child->ID, 'comicpress', true);
            if (isset($meta['managed'])) {
              if ($meta['managed']) {
                $result[] = new ComicPressBackendAttachment($child);
              }
            }
		    	}
		    }
			}
		}
		return $result;
	}

  function ComicPressBackendAttachment($attachment) {
  	$this->attachment = $attachment;
  	$this->id = sprintf('%s-%d', $this->root_id, $this->attachment->ID);
  	$this->type = get_post_meta($this->attachment->ID, 'comic_image_type', true);
  }

  function dims($size = 'comic') {
  	$metadata = image_downsize($this->attachment->ID, $size);
  	if (!empty($metadata)) {
  		if (is_array($metadata)) {
				return array_combine(array('width', 'height'), array_slice($metadata, 1, 2));
  		}
  	}
  	return false;
  }

  function url($size = 'comic') {
  	$metadata = image_downsize($this->attachment->ID, $size);
  	if (!empty($metadata)) {
  		if (is_array($metadata)) {
  			return $metadata[0];
  		}
  	}
  	return false;
  }

  // @codeCoverageIgnoreStart
  function embed($size = 'comic') { return $this->_embed_image($size); }
  function file($size = 'comic') {	return $this->attachment->guid; }
  function alt() { return $this->attachment->post_title; }
  function title() { return $this->attachment->post_excerpt; }
  // @codeCoverageIgnoreEnd

  function get_info($size = 'comic') {
  	$info = array();
  	foreach (array('dims', 'url', 'file') as $field) {
  		$result = $this->{$field}($size);
  		if (is_array($result)) {
  			$info = array_merge($info, $result);
  		} else {
  			$info[$field] = $result;
  		}
  	}
  	return $info;
  }

  function generate_from_id($id) {
  	if (strpos($id, $this->root_id . '-') === 0) {
  		$id = str_replace($this->root_id . '-', '', $id);
  		if (is_numeric($id)) {
  			$post = get_post($id);
  			if (!empty($post)) {
  				return new ComicPressBackendAttachment($post);
  			}
  		}
  	}
  	return false;
  }
}

?>