<?php
class videoEditor {

    public $config;
    public $output;

    public function __construct( $config = array() )
    {

        $this->config = array_merge( array(
            'video_path' => '',
            'lang' => 'en',
            'upload_allowed' => array('mp4','flv','avi','mpg','webm'),
            'out_video_formats' => array('mp4','flv','webm','ogv'),
            'access_permissions' => $config['access_permissions'], //array( 'upload', 'delete_output_files', 'delete_input_files', 'create_video' ),
            'out_video_sizes' => array( 360, 480, 576, 720),
            'youtube_download' => array( 'quality' => 'medium', 'type' => 'mp4' ),
            'max_output_files_count' => false,
            'use_mp4box' => true,
            'use_mencoder' => true,
            'use_avidemux' => true,
            'ffmpeg_string_arr' => array(
                'flv' => '-vcodec flv -s {resolution} -aspect {aspect} -b:v {quality} -acodec libmp3lame -b:a 64k',//libfaac | aac
                'mp4' => '-vcodec libx264 -s {resolution} -aspect {aspect} -b:v {quality} -acodec libmp3lame -b:a 64k',//mpeg4
                'webm' => '-vcodec libvpx -s {resolution} -aspect {aspect} -b:v {quality} -acodec libvorbis -b:a 64k',
                'ogv' => '-vcodec libtheora -s {resolution} -aspect {aspect} -b:v {quality} -acodec libvorbis -b:a 64k'
            )
        ), $config );

        $this->output = array( 'data' => array(), 'msg' => '', 'error' => false );

    }

    /**
     * utf8_basename
     *
     * @param string $file_path
     */
    public function utf8_basename( $file_path )
    {

        $temp_arr = explode('/',$file_path);

        return array_pop( $temp_arr );

    }

    /**
     * getFrame
     *
     * @param string $time
     * @param string $video_file_path
     * @param string $file_out_path
     */
    public function getFrame( $time, $video_file_path, $file_out_path )
    {
        //mencoder
        if( $this->config['use_mencoder'] ){

            $temp_dir = $this->config['tmp_path'] . $this->config['session_id'];
            if( !is_dir( $temp_dir ) ){
                mkdir( $temp_dir, 0777 );
            }
            $seconds = $this->timeToSeconds( $time );
            $command = "cd '{$temp_dir}' && mplayer -frames 1 -ss {$seconds} -vo jpeg -nosound '{$video_file_path}'";

            @exec( $command );

            $sceenshot_path = $temp_dir . '/00000001.jpg';

            if( file_exists($sceenshot_path) ){
                @rename( $sceenshot_path, $file_out_path );
                @chmod( $file_out_path, 0777 );
                //delete temp directory
                $this->deleteDirectory( $temp_dir );
            }

        }
        //ffmpeg
        else{

            $command = "ffmpeg -ss {$time} -i '{$video_file_path}' -frames:v 1 -y '{$file_out_path}' 2>&1";

            exec( $command );
            @chmod( $file_out_path, 0777 );

        }

        $this->logging( $command );

        return $this->utf8_basename( $file_out_path );

    }

    /**
     * getFilesList
     *
     * @param string $dir_path
     */
    public function getFilesList( $dir_path )
    {

        $out = array();

        $files = array_diff(scandir($dir_path), array(".", ".."));

        foreach( $files as $file ){
            array_push( $out, $dir_path . $file );
        }

        usort($out, function($a, $b) {
            return filemtime($a) < filemtime($b);
        });

        return $out;

    }

    /**
     * timeToSeconds
     *
     * @param string $time
     */
    public function timeToSeconds( $time )
    {

        $output = 0;

        $time_arr = explode(':',$time);
        $t = array(3600, 60, 1);

        foreach( $time_arr as $k => $tt ){
            $output += ( floatval( $tt ) * $t[$k] );
        }

        return $output;

    }


    /**
     * upload
     *
     * @param string $link
     */
    public function action_upload( $link )
    {

        if( !$this->isPermitted( 'upload' ) ){
            header( "refresh:4;url=" . str_replace('action.php','',$_SERVER['PHP_SELF']) );
            header( "Content-Type: text/html; charset=UTF-8" );
            echo LANG_NOT_PERMITTED;
            exit;
        }

        $link = !empty( $_POST['link'] ) && !is_array( $_POST['link'] ) ? urldecode(trim( $_POST['link'] )) : '';

        if( $link ){

            if( ( strpos($link, 'youtube.com/') !== false) || (strpos($link, 'youtu.be/') !== false)) {

                $upload_path = $this->config['video_path'] . date('d-m-y_H-i-s') . '.mp4';
                $this->downloadFromYoutube( $link, $upload_path, $this->config['youtube_download'] );

            }else{

                $name = $this->utf8_basename( $link );
                $temp_arr = explode('.',$name);
                $ext = end($temp_arr);
                if( in_array( $ext, $this->config['upload_allowed'] ) ){
                    $file_name = $name;//date('d-m-y_H-i-s') . '.' . $ext;
                    file_put_contents( $this->config['video_path'].$file_name, file_get_contents( $link ) );
                    @chmod( $this->config['video_path'].$file_name, 0777 );
                }

            }

        }else{

            if ( $_FILES["file"]["error"] == UPLOAD_ERR_OK ) {

                if ($error == UPLOAD_ERR_OK) {

                    $tmp_name = $_FILES["file"]["tmp_name"];
                    $name = $_FILES["file"]["name"];
                    $temp_arr = explode('.',$name);
                    $ext = end($temp_arr);

                    if( in_array( $ext, $this->config['upload_allowed'] ) ){

                        $file_name = $name;//date('d-m-y_H-i-s') . '.' . $ext;
                        move_uploaded_file($tmp_name, $this->config['video_path'] . $file_name);
                        @chmod( $this->config['video_path'] . $file_name, 0777 );
                    }

                    header("Location: " . str_replace('action.php','',$_SERVER['PHP_SELF']) );
                }
            }
        }
    }
    /**
     * remove_video
     *
     */
    public function action_remove_video()
    {

        $name = !empty( $_POST['name'] ) && !is_array( $_POST['name'] ) ? urldecode(trim( $_POST['name'] )) : '';
        $type = !empty( $_POST['type'] ) && !is_array( $_POST['type'] ) ? urldecode(trim( $_POST['type'] )) : 'input';
    }
}