<?php
namespace Zotlabs\Module;

use Zotlabs\Lib\Config;
use Zotlabs\Lib\Libsync;

/*
   @file cover_photo.php
   @brief Module-file with functions for handling of cover-photos

*/

require_once('include/photo/photo_driver.php');
require_once('include/channel.php');
require_once('include/photos.php');


/* @brief Initalize the cover-photo edit view
 *
 * @param $a Current application
 * @return void
 *
 */


class Cover_photo extends \Zotlabs\Web\Controller {

	function init() {
		if(! local_channel()) {
			return;
		}

		$channel = \App::get_channel();
		profile_load($channel['channel_address']);
	}

	/**
	 * @brief Evaluate posted values
	 *
	 * @return void
	 *
	 */

	function post() {

		if(! local_channel()) {
			return;
		}

		$channel = \App::get_channel();

		check_form_security_token_redirectOnErr('/cover_photo', 'cover_photo');

		// Remove cover photo
		if(isset($_POST['remove'])) {

			$r = q("SELECT resource_id FROM photo WHERE photo_usage = %d AND uid = %d LIMIT 1",
				intval(PHOTO_COVER),
				intval(local_channel())
			);

			if($r) {
			    q("update photo set photo_usage = %d where photo_usage = %d and uid = %d",
			    	intval(PHOTO_NORMAL),
				    intval(PHOTO_COVER),
				    intval(local_channel())
			    );

				$sync = attach_export_data($channel,$r[0]['resource_id']);
				if($sync)
				    Libsync::build_sync_packet($channel['channel_id'],array('file' => array($sync)));
			}

			// Update directory in background
			\Zotlabs\Daemon\Master::Summon(array('Directory',$channel['channel_id']));

			goaway(z_root() . '/cover_photo');
		}

		if((array_key_exists('cropfinal',$_POST)) && ($_POST['cropfinal'] == 1)) {

			// phase 2 - we have finished cropping

			if(argc() != 2) {
				notice( t('Image uploaded but image cropping failed.') . EOL );
				return;
			}

			$image_id = argv(1);

			if(substr($image_id,-2,1) == '-') {
				$scale = substr($image_id,-1,1);
				$image_id = substr($image_id,0,-2);
			}

			$srcX = intval($_POST['xstart']);
			$srcY = intval($_POST['ystart']);
			$srcW = intval($_POST['xfinal']) - $srcX;
			$srcH = intval($_POST['yfinal']) - $srcY;

			$r = q("select gender from profile where uid = %d and is_default = 1 limit 1",
				intval(local_channel())
			);
			if($r) {
				$profile = $r[0];
			}

			$r = q("SELECT * FROM photo WHERE resource_id = '%s' AND uid = %d AND imgscale = 0 LIMIT 1",
				dbesc($image_id),
				intval(local_channel())
			);

			if($r) {

				$max_thumb = intval(Config::Get('system','max_thumbnail',1600));
				$iscaled = false;
				if(intval($r[0]['height']) > $max_thumb || intval($r[0]['width']) > $max_thumb) {
					$imagick_path = Config::Get('system','imagick_convert_path');
					if($imagick_path && @file_exists($imagick_path) && intval($r[0]['os_storage'])) {

						$fname = dbunescbin($r[0]['content']);
						$tmp_name = $fname . '-001';
						$newsize = photo_calculate_scale(array_merge(getimagesize($fname),['max' => $max_thumb]));
						$cmd = $imagick_path . ' ' . escapeshellarg(PROJECT_BASE . '/' . $fname) . ' -resize ' . $newsize . ' ' . escapeshellarg(PROJECT_BASE . '/' . $tmp_name);
						//	logger('imagick thumbnail command: ' . $cmd);
						for($x = 0; $x < 4; $x ++) {
							exec($cmd);
							if(file_exists($tmp_name)) {
								break;
							}
						}
						if(file_exists($tmp_name)) {
							$base_image = $r[0];
							$gis = getimagesize($tmp_name);
							logger('gis: ' . print_r($gis,true), LOGGER_DEBUG);
							$base_image['width'] = $gis[0];
							$base_image['height'] = $gis[1];
							$base_image['content'] = @file_get_contents($tmp_name);
							$iscaled = true;
							@unlink($tmp_name);
						}
					}
				}
				if(! $iscaled) {
					$base_image = $r[0];
					$base_image['content'] = (($r[0]['os_storage']) ? @file_get_contents(dbunescbin($base_image['content'])) : dbunescbin($base_image['content']));
				}

				$im = photo_factory($base_image['content'], $base_image['mimetype']);
				if($im->is_valid()) {

					// We are scaling and cropping the relative pixel locations to the original photo instead of the
					// scaled photo we operated on.

					// First load the scaled photo to check its size. (Should probably pass this in the post form and save
					// a query.)

					$g = q("select width, height from photo where resource_id = '%s' and uid = %d and imgscale = 3",
						dbesc($image_id),
						intval(local_channel())
					);


					$scaled_width = $g[0]['width'];
					$scaled_height = $g[0]['height'];

					if((! $scaled_width) || (! $scaled_height)) {
						logger('potential divide by zero scaling cover photo');
						return;
					}

					// unset all other cover photos

					q("update photo set photo_usage = %d where photo_usage = %d and uid = %d",
						intval(PHOTO_NORMAL),
						intval(PHOTO_COVER),
						intval(local_channel())
					);

					$orig_srcx = ( $base_image['width'] / $scaled_width ) * $srcX;
					$orig_srcy = ( $base_image['height'] / $scaled_height ) * $srcY;
	 				$orig_srcw = ( $srcW / $scaled_width ) * $base_image['width'];
	 				$orig_srch = ( $srcH / $scaled_height ) * $base_image['height'];

					$im->cropImageRect(1200,435,$orig_srcx, $orig_srcy, $orig_srcw, $orig_srch);

					$aid = get_account_id();

					$p = [
						'aid'          => $aid,
						'uid'          => local_channel(),
						'resource_id'  => $base_image['resource_id'],
						'filename'     => $base_image['filename'],
						'album'        => t('Cover Photos'),
						'os_path'      => $base_image['os_path'],
						'display_path' => $base_image['display_path'],
						'photo_usage'  => PHOTO_COVER
					];

					$r1 = $im->storeThumbnail($p, PHOTO_RES_COVER_1200);

					$im->doScaleImage(850,310);
					$r2 = $im->storeThumbnail($p, PHOTO_RES_COVER_850);

					$im->doScaleImage(425,160);
					$r3 = $im->storeThumbnail($p, PHOTO_RES_COVER_425);

					if($r1 === false || $r2 === false || $r3 === false) {
						// if one failed, delete them all so we can start over.
						notice( t('Image resize failed.') . EOL );
						$x = q("delete from photo where resource_id = '%s' and uid = %d and imgscale >= 7 ",
							dbesc($base_image['resource_id']),
							local_channel()
						);

						$x = q("SELECT content FROM photo WHERE resource_id = '%s' AND uid = %d AND os_storage = 1 AND imgscale >= 7",
							dbesc($base_image['resource_id']),
							local_channel()
						);
						if($x) {
							foreach($x as $xx) {
								@unlink(dbunescbin($xx['content']));
							}
						}

						return;
					}

					profile_activity([t('Cover Photo')], $base_image['resource_id']);

					$sync = attach_export_data($channel,$base_image['resource_id']);
					if($sync)
					    Libsync::build_sync_packet($channel['channel_id'],array('file' => array($sync)));

					// Update directory in background
					\Zotlabs\Daemon\Master::Summon(array('Directory',$channel['channel_id']));
				}
				else
					notice( t('Unable to process image') . EOL);
			}

			goaway(z_root() . '/channel/' . $channel['channel_address']);

		}

		$hash = photo_new_resource();
		$smallest = 0;

		require_once('include/attach.php');

		$res = attach_store(\App::get_channel(), get_observer_hash(), '', ['album' => t('Cover Photos'), 'hash' => $hash, 'nosync' => true, 'source' => 'photos']);

		logger('attach_store: ' . print_r($res,true));

		if($res && intval($res['data']['is_photo'])) {
			$i = q("select * from photo where resource_id = '%s' and uid = %d and imgscale = 0",
				dbesc($hash),
				intval(local_channel())
			);

			if(! $i) {
				notice( t('Image upload failed.') . EOL );
				return;
			}
			$os_storage = false;

			foreach($i as $ii) {
				$smallest   = intval($ii['imgscale']);
				$os_storage = intval($ii['os_storage']);
				$imagedata  = $ii['content'];
				$filetype   = $ii['mimetype'];
			}
		}

		$imagedata = (($os_storage) ? @file_get_contents(dbunescbin($imagedata)) : dbunescbin($imagedata));
		$ph = photo_factory($imagedata, $filetype);

		if(! $ph->is_valid()) {
			notice( t('Unable to process image.') . EOL );
			return;
		}

		return $this->cover_photo_crop_ui_head($a, $ph, $hash, $smallest);

	}


	/**
	 * @brief Generate content of profile-photo view
	 *
	 * @return string
	 *
	 */

	function get() {

		if(! local_channel()) {
			notice( t('Permission denied.') . EOL );
			return;
		}

		$channel = \App::get_channel();

		$newuser = false;

		if(argc() == 2 && argv(1) === 'new')
			$newuser = true;

		if(argv(1) === 'use') {
			if (argc() < 3) {
				notice( t('Permission denied.') . EOL );
				return;
			};

	//		check_form_security_token_redirectOnErr('/cover_photo', 'cover_photo');

			$resource_id = argv(2);

			$r = q("SELECT id, album, imgscale FROM photo WHERE uid = %d AND resource_id = '%s' ORDER BY imgscale ASC",
				intval(local_channel()),
				dbesc($resource_id)
			);
			if(! $r) {
				notice( t('Photo not available.') . EOL );
				return;
			}
			$havescale = false;
			foreach($r as $rr) {
				if($rr['imgscale'] == 7)
					$havescale = true;
			}

			$r = q("SELECT content, mimetype, resource_id, os_storage FROM photo WHERE id = %d and uid = %d limit 1",
				intval($r[0]['id']),
				intval(local_channel())

			);
			if(! $r) {
				notice( t('Photo not available.') . EOL );
				return;
			}

			if(intval($r[0]['os_storage']))
				$data = @file_get_contents(dbunescbin($r[0]['content']));
			else
				$data = dbunescbin($r[0]['content']);

			$ph = photo_factory($data, $r[0]['mimetype']);
			$smallest = 0;
			if($ph->is_valid()) {
				// go ahead as if we have just uploaded a new photo to crop
				$i = q("select resource_id, imgscale from photo where resource_id = '%s' and uid = %d and imgscale = 0",
					dbesc($r[0]['resource_id']),
					intval(local_channel())
				);

				if($i) {
					$hash = $i[0]['resource_id'];
					foreach($i as $ii) {
						$smallest = intval($ii['imgscale']);
					}
	            }
	        }

			$this->cover_photo_crop_ui_head($a, $ph, $hash, $smallest);
		}


		if(! x(\App::$data,'imagecrop')) {

			$tpl = get_markup_template('cover_photo.tpl');

			$output = replace_macros($tpl,array(
				'$user'                => \App::$channel['channel_address'],
				'$info'                => t('Your cover photo may be visible to anybody on the internet'),
				'$existing'            => get_cover_photo(local_channel(),'array',PHOTO_RES_COVER_850),
				'$lbl_upfile'          => t('Upload File:'),
				'$lbl_profiles'        => t('Select a profile:'),
				'$title'               => t('Change Cover Photo'),
				'$submit'              => t('Upload'),
				'$remove'              => t('Remove'),
				'$profiles'            => false,
				'$embedPhotos' => t('Use a photo from your albums'),
				'$embedPhotosModalTitle' => t('Use a photo from your albums'),
				'$embedPhotosModalCancel' => t('Cancel'),
				'$embedPhotosModalOK' => t('OK'),
				'$modalchooseimages' => t('Choose images to embed'),
				'$modalchoosealbum' => t('Choose an album'),
				'$modaldiffalbum' => t('Choose a different album'),
				'$modalerrorlist' => t('Error getting album list'),
				'$modalerrorlink' => t('Error getting photo link'),
				'$modalerroralbum' => t('Error getting album'),
				'$form_security_token' => get_form_security_token("cover_photo"),
					/// @FIXME - yuk
				'$select' => t('Select existing photo'),

			));

			call_hooks('cover_photo_content_end', $output);

			return $output;
		}
		else {
			$filename = \App::$data['imagecrop'] . '-3';
			$resolution = 3;
			$tpl = get_markup_template("cropcover.tpl");
			return replace_macros($tpl,array(
				'$filename'            => $filename,
				'$profile'             => intval($_REQUEST['profile']),
				'$resource'            => \App::$data['imagecrop'] . '-3',
				'$image_url'           => z_root() . '/photo/' . $filename,
				'$title'               => t('Crop Image'),
				'$desc'                => t('Please adjust the image cropping for optimum viewing.'),
				'$form_security_token' => get_form_security_token("cover_photo"),
				'$done'                => t('Done Editing')
			));
		}
	}

	/* @brief Generate the UI for photo-cropping
	 *
	 * @param $a Current application
	 * @param $ph Photo-Factory
	 * @return void
	 *
	 */

	function cover_photo_crop_ui_head(&$a, $ph, $hash, $smallest){

		$max_length = Config::Get('system','max_image_length');
		if(! $max_length)
			$max_length = MAX_IMAGE_LENGTH;
		if($max_length > 0)
			$ph->scaleImage($max_length);

		$width  = $ph->getWidth();
		$height = $ph->getHeight();

		if($width < 300 || $height < 300) {
			$ph->scaleImageUp(240);
			$width  = $ph->getWidth();
			$height = $ph->getHeight();
		}


		\App::$data['imagecrop'] = $hash;
		\App::$data['imagecrop_resolution'] = $smallest;
		\App::$page['htmlhead'] .= replace_macros(get_markup_template("crophead.tpl"), array());
		return;
	}


}