<?php
/**
 * Multi-image uploader action
 *
 * @author Cash Costello
 * @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License v2
 */

elgg_load_library('tidypics:upload');
$img_river_view = elgg_get_plugin_setting('img_river_view', 'tidypics');

$guid = (int) get_input('guid');
$album = get_entity($guid);
if (!$album) {
	register_error(elgg_echo('tidypics:baduploadform'));
	forward(REFERER);
}

// post limit exceeded
if (count($_FILES) == 0) {
	trigger_error('Tidypics warning: user exceeded post limit on image upload', E_USER_WARNING);
	register_error(elgg_echo('tidypics:exceedpostlimit'));
	forward(REFERER);
}

// test to make sure at least 1 image was selected by user
$num_images = 0;
foreach($_FILES['images']['name'] as $name) {
	if (!empty($name)) {
		$num_images++;
	}
}
if ($num_images == 0) {
	// have user try again
	register_error(elgg_echo('tidypics:noimages'));
	forward(REFERER);
}

// create the image object for each upload
$uploaded_images = array();
$not_uploaded = array();
$error_msgs = array();
foreach ($_FILES['images']['name'] as $index => $value) {
	$data = array();
	foreach ($_FILES['images'] as $key => $values) {
		$data[$key] = $values[$index];
	}

	if (empty($data['name'])) {
		continue;
	}

	$name = htmlspecialchars($data['name'], ENT_QUOTES, 'UTF-8', false);

	$mime = tp_upload_get_mimetype($name);

	$image = new TidypicsImage();
	$image->title = $name;
	$image->container_guid = $album->getGUID();
	$image->setMimeType($mime);
	$image->access_id = $album->access_id;

	try {
		$result = $image->save($data);
	} catch (Exception $e) {
	        $image->delete();
	        $result = false;
		array_push($not_uploaded, $name);
		array_push($error_msgs, $e->getMessage());
	}

	if ($result) {
		array_push($uploaded_images, $image->getGUID());

		if ($img_river_view == "all") {
			elgg_create_river_item(array('view' => 'river/object/image/create',
                                                     'action_type' => 'create',
                                                     'subject_guid' => $image->getOwnerGUID(),
                                                     'object_guid' => $image->getGUID()));
                }
        }
}

if (count($uploaded_images)) {
	// Create a new batch object to contain these photos
	$batch = new TidypicsBatch();
	$batch->access_id = $album->access_id;
	$batch->container_guid = $album->getGUID();
	if ($batch->save()) {
		foreach ($uploaded_images as $uploaded_guid) {
			add_entity_relationship($uploaded_guid, "belongs_to_batch", $batch->getGUID());
		}
	}

	$album->prependImageList($uploaded_images);

	// "added images to album" river
	if ($img_river_view == "batch" && $album->new_album == false) {
		elgg_create_river_item(array('view' => 'river/object/tidypics_batch/create',
                                             'action_type' => 'create',
                                             'subject_guid' => $batch->getOwnerGUID(),
                                             'object_guid' => $batch->getGUID()));
	} else if ($img_river_view == "1" && $album->new_album == false) {
                elgg_create_river_item(array('view' => 'river/object/tidypics_batch/create_single_image',
                                             'action_type' => 'create',
                                             'subject_guid' => $batch->getOwnerGUID(),
                                             'object_guid' => $batch->getGUID()));
	}

	// "created album" river
	if ($album->new_album) {
		$album->new_album = false;
		$album->first_upload = true;

		$album_river_view = elgg_get_plugin_setting('album_river_view', 'tidypics');
		if ($album_river_view != "none") {
                        elgg_create_river_item(array('view' => 'river/object/album/create',
                                                     'action_type' => 'create',
                                                     'subject_guid' => $album->getOwnerGUID(),
                                                     'object_guid' => $album->getGUID()));
                }

		// "created album" notifications
		// we throw the notification manually here so users are not told about the new album until
		// there are at least a few photos in it
		if ($album->shouldNotify()) {
                        elgg_trigger_event('album_first', 'album', $album);
			$album->last_notified = time();
		}
	} else {
		// "added image to album" notifications
		if ($album->first_upload) {
			$album->first_upload = false;
		}

		if ($album->shouldNotify()) {
                        elgg_trigger_event('album_more', 'album', $album);
			$album->last_notified = time();
		}
	}
}

if (count($not_uploaded) > 0) {
	if (count($uploaded_images) > 0) {
		$error = sprintf(elgg_echo("tidypics:partialuploadfailure"), count($not_uploaded), count($not_uploaded) + count($uploaded_images))  . '<br />';
	} else {
		$error = elgg_echo("tidypics:completeuploadfailure") . '<br />';
	}

	$num_failures = count($not_uploaded);
	for ($i = 0; $i < $num_failures; $i++) {
		$error .= "{$not_uploaded[$i]}: {$error_msgs[$i]} <br />";
	}
	register_error($error);

	if (count($uploaded_images) == 0) {
		//upload failed, so forward to previous page
		forward(REFERER);
	} else {
		// some images did upload so we fall through
	}
} else {
	system_message(elgg_echo('tidypics:upl_success'));
}

forward("photos/edit/$batch->guid");