friendica-github/src/Model/Post/Media.php

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2020-10-29 05:20:26 +00:00
<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Model\Post;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\Database\DBA;
use Friendica\Util\Images;
/**
* Class Media
*
* This Model class handles media interactions.
* This tables stores medias (images, videos, audio files) related to posts.
*/
class Media
{
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const UNKNOWN = 0;
const IMAGE = 1;
const VIDEO = 2;
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const AUDIO = 3;
const TORRENT = 16;
/**
* Insert a post-media record
*
* @param array $media
* @return void
*/
public static function insert(array $media)
{
if (empty($media['url']) || empty($media['uri-id'])) {
return;
}
if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'url' => $media['url']])) {
Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
return;
}
$fields = ['type', 'mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'description'];
foreach ($fields as $field) {
if (empty($media[$field])) {
unset($media[$field]);
}
}
if ($media['type'] == self::IMAGE) {
$imagedata = Images::getInfoFromURLCached($media['url']);
if (!empty($imagedata)) {
$media['mimetype'] = $imagedata['mime'];
$media['size'] = $imagedata['size'];
$media['width'] = $imagedata[0];
$media['height'] = $imagedata[1];
}
if (!empty($media['preview'])) {
$imagedata = Images::getInfoFromURLCached($media['preview']);
if (!empty($imagedata)) {
$media['preview-width'] = $imagedata[0];
$media['preview-height'] = $imagedata[1];
}
}
}
$result = DBA::insert('post-media', $media, true);
Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
}
/**
* Tests for path patterns that are usef for picture links in Friendica
*
* @param string $page Link to the image page
* @param string $preview Preview picture
* @return boolean
*/
private static function isPictureLink(string $page, string $preview)
{
return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
}
/**
* Add media links and remove them from the body
*
* @param integer $uriid
* @param string $body
* @return string Body without media links
*/
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public static function insertFromBody(int $uriid, string $body)
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{
// Simplify image codes
$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
$attachments = [];
if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
foreach ($pictures as $picture) {
if (!self::isPictureLink($picture[1], $picture[2])) {
continue;
}
$body = str_replace($picture[0], '', $body);
$image = str_replace('-1.', '-0.', $picture[2]);
$attachments[] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
'preview' => $picture[2], 'description' => $picture[3]];
}
}
if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
foreach ($pictures as $picture) {
$body = str_replace($picture[0], '', $body);
$attachments[] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
}
}
if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
foreach ($pictures as $picture) {
if (!self::isPictureLink($picture[1], $picture[2])) {
continue;
}
$body = str_replace($picture[0], '', $body);
$image = str_replace('-1.', '-0.', $picture[2]);
$attachments[] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
'preview' => $picture[2], 'description' => null];
}
}
if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
foreach ($pictures as $picture) {
$body = str_replace($picture[0], '', $body);
$attachments[] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
}
}
if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
foreach ($audios as $audio) {
$body = str_replace($audio[0], '', $body);
$attachments[] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
}
}
if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
foreach ($videos as $video) {
$body = str_replace($video[0], '', $body);
$attachments[] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
}
}
foreach ($attachments as $attachment) {
self::insert($attachment);
}
return trim($body);
}
}