<?php

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

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

	function ComicPressBackendAttachment($attachment = null) {
		$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') {
		$comicpress = ComicPress::get_instance();

		$dims = array();
		if (isset($comicpress->comicpress_options['image_types'])) {
			if ($size == 'default') {
				foreach ($comicpress->comicpress_options['image_types'] as $type => $info) {
					if ($info['default']) { $size = $type; break; }
				}
			}

			if (isset($comicpress->comicpress_options['image_types'][$size])) {
				if (isset($comicpress->comicpress_options['image_types'][$size]['dimensions'])) {
					$dims = array_combine(array('width', 'height'), explode("x", $comicpress->comicpress_options['image_types'][$size]['dimensions']));
				}
			}
		}

		return $dims;
	}

	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;
	}
}

class ComicPressBackendAttachmentFactory {
	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 generate_from_id($id) {
		if (strpos($id, 'attachment-') === 0) {
			$id = str_replace('attachment-', '', $id);
			if (is_numeric($id)) {
				$post = get_post($id);
				if (!empty($post)) {
					$meta = get_post_meta($post->ID, 'comicpress', true);
					if (isset($meta['managed'])) {
						if ($meta['managed']) {
							return new ComicPressBackendAttachment($post);
						}
					}
				}
			}
		}
		return false;
	}
}