document.body.onload = function() {
    var URL_Playlist = new URL(location.href);
    var source_playlist_id = URL_Playlist.searchParams.get('list');
    var keyword_list = [];
    if (source_playlist_id) {
        if (!URL_Playlist.searchParams.get('disable_polymer')) {
            location.search += '&disable_polymer=1';
        }
        var session_token = document.getElementById('pl-video-list').getAttribute('data-like-xsrf-token');
        var input = document.createElement('input');
        input.id = 'file-input';
        input.type = 'file';
        input.accept = 'text/plain';
        if (!document.getElementById('file-input') && source_playlist_id && session_token) {
            document.getElementById('gh-banner').appendChild(input);
            console.log('Ready!!!');
            document.querySelector('#file-input').addEventListener('change', function(e) {
                // list of selected files
                var all_files = this.files;
                if (all_files.length == 0) {
                    alert('Error : No file selected');
                    return;
                }
                // first file selected by user
                var file = all_files[0];
                // files types allowed
                // we are reading text file in this example
                var allowed_types = ['text/plain'];
                if (allowed_types.indexOf(file.type) == -1) {
                    alert('Error : Incorrect file type');
                    return;
                }
                // Max 2 MB allowed
                var max_size_allowed = 2 * 1024 * 1024
                if (file.size > max_size_allowed) {
                    alert('Error : Exceeded size 2MB');
                    return;
                }
                // file validation is successful
                // we will now read the file
                const reader = new FileReader();
                reader.onload = function fileReadCompleted() {
                    // when the reader is done, the content is in reader.result.
                    keyword_list = reader.result.split('\n');
                     if (!keyword_list.length) {
                        alert('Keywords not found!');
                        return false;
                    }
                    for (var i = 0, length = keyword_list.length; i < length; i++) {
                        if (keyword_list[i] && keyword_list[i].trim().length) {
                            let key = keyword_list[i].trim();
                            var data = encodeURI('source_playlist_id=' + source_playlist_id + '&n=' + key + '&p=public&session_token=' + session_token);
                            var xhttp = new XMLHttpRequest();
                            xhttp.onreadystatechange = function() {
                                if (this.readyState == 4 && this.status == 200) {
                                    console.log(this.responseText);
                                }
                            };
                            xhttp.open('POST', 'https://www.youtube.com/playlist_ajax?action_create_playlist=1', true);
                            xhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
                            xhttp.send(data);
                        }
                    }
                };
                reader.readAsText(this.files[0]);
                this.value = null;
            });
        }
    }
}