<?php

/**
 * Простой слой загрузки файлов на сервер - привязка к DBObject.php
 * Версия 2020-01-01
 * (c) Виталий Филиппов 2018
 */

class File extends DBObject
{
    const ONLY_BINARY = 1;
    const ONLY_IMAGES = 2;
    const ONLY_SWF = 4;
    const ONLY_VIDEO = 8;
    const IMAGES_VIDEO = 10;
    const ANY_MEDIA = 14;
    const ANYTHING = 15;

    const CROP_XY = 1;
    const CROP_Y = 2;
    const CROP_X = 3;

    public static $table = 'files';
    public static $clean = [], $dirty = [];
    public static $fields = [
        'id'        => false,
        'user_id'   => false,
        'sha1'      => false,
        'format'    => false,
        'mimetype'  => false,
        'size'      => true,
        'width'     => true,
        'height'    => true,
        'added'     => true,
        'props'     => true,
    ];
    public static $joins = [
        'user'      => 'User',
    ];
    public static $handler;

    protected function get_disk_path()
    {
        return File::$handler->getPath(false, $this->data);
    }

    protected function get_url()
    {
        return File::$handler->getPath(true, $this->data);
    }

    protected function get_fsize_ru()
    {
        return FileUtils::sizeString($this->data['size'], 'ru');
    }

    protected function get_fsize_en()
    {
        return FileUtils::sizeString($this->data['size'], 'en');
    }

    protected function get_gps()
    {
        return File::$handler->getGPS($this->data);
    }

    public function getThumb($width, $height, $force = false, $crop = false, $alignY = 0.5)
    {
        return File::$handler->getThumb($this->data, $width, $height, $force, $crop, $alignY);
    }

    public function cropThumb($width, $height, $alignY = 0.5)
    {
        return File::$handler->getThumb($this->data, $width, $height, false, self::CROP_XY, $alignY);
    }

    public function cropYThumb($width, $max_height, $alignY = 0.5)
    {
        return File::$handler->getThumb($this->data, $width, $max_height, false, self::CROP_Y, $alignY);
    }

    public function cropXThumb($max_width, $height)
    {
        return File::$handler->getThumb($this->data, $max_width, $height, false, self::CROP_X);
    }

    protected static function doUpload($row)
    {
        if (!$row)
        {
            return NULL;
        }
        $obj = File::selectRow(false, '*', [ 'sha1' => $row['sha1'] ]);
        if ($obj)
        {
            return $obj;
        }
        $row['id'] = App::$db->insert_row(File::$table, [
            'props' => json_encode($row['props'], JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES),
            'user_id' => App::$user['id'] ?: NULL,
            'added' => time(),
        ] + $row);
        return File::newFromRow($row);
    }

    public static function getHandler()
    {
        if (!File::$handler)
        {
            File::$handler = new FileHandler([
                'basedir' => App::$config['local_path'].'/files',
                'baseurl' => App::domain().'/files/',
                'mime_blacklist' => App::$config['mime_blacklist'],
            ]);
        }
        return File::$handler;
    }

    public static function upload(LocalFile $localFile, $allowedFormats = File::ANYTHING)
    {
        return File::doUpload(File::getHandler()->upload($localFile, $allowedFormats));
    }

    public static function uploadUrl($url, $allowedFormats = File::ONLY_IMAGES, $curl_options = [])
    {
        return File::doUpload(File::getHandler()->uploadUrl($url, $allowedFormats, $curl_options));
    }

    public function delete()
    {
        return File::$handler->deleteFiles([ 'id' => $this->data['id'] ]);
    }

    public static function newFromRow($row, $noCache = 0)
    {
        File::getHandler();
        $obj = parent::newFromRow($row);
        if ($obj)
        {
            $obj->data['props'] = json_decode($obj->data['props'], true);
        }
        return $obj;
    }

    public function saveMe()
    {
        throw new Exception('File objects are immutable');
    }
}