var url = 'https://terminal.jcubic.pl/cgi-bin/ansi.py';

(async function() {
    function get(url) {
        return fetch(url).then(res => res.text()).then(text=>text.trim());
    }
    var files = (await get(url + '?action=ls')).split('\n');
    function get_text(name) {
        return get(url + '?file=' + name);
    }

    var term = $('body').terminal({
        help: function() {
            this.echo([
                'use [[;white;]ls] to display list of files and [[;white;]cat]',
                ' to display the artwork, you can also drag and drop the file.',
                '\nOnly Code Page 437 encoding files will work (classic demo s',
                'cene files)'].join(''));
        },
        cat: function(name) {
            this.pause();
            get_text(name).then(text => {
                // this line is only good if you have 80 char lines
                var str = text.replace(/\r?\n?\x1b\[A\x1b\[[0-9]+C/g, '');
                str = $.terminal.apply_formatters(str);
                var lines = $.terminal.split_equal(str, 80);
                lines.map(line => this.echo(line, {flush: false}));
                this.flush().resume();
            });
        },
        ls: function() {
            this.echo(files);
        },
        credits: function() {
            this.echo('ANSI artworks taken from [[!;;;;https://fuel.wtf/packs/fuel27/]fuel magazine]')
        }
    }, {
        completion: function(string, callback) {
            if (this.get_command().match(/^cat /)) {
                callback(files);
            } else {
                callback(['ls', 'file', 'credits', 'help']);
            }
        },
        name: 'ansi'
    }).drop(function(array_buff) {
        var buff = Buffer.from(array_buff);
        var str = iconv.decode(buff, 'CP437');
        str = str.replace(/\r?\n?\x1b\[A\x1b\[[0-9]+C/g, '');
        str = $.terminal.apply_formatters(str);
        term.echo($.terminal.split_equal(str, 80));
        return term.read('press enter to continue ');
    }, {
        type: 'arraybuffer',
        error: function(e) {
            term.exception(e);
        },
        complete: function() {
            term.echo('all files rendered');
        }
    });
    
    return;
    this.on('dragover', function() {
        return false;
    }).on('drop', function(e) {
        e.preventDefault();
        try {
            var org = e.originalEvent;
            var files = (org.dataTransfer.files || org.target.files);
            [].forEach.call(files, function(file) {
                var reader = new FileReader();
                reader.onload = function(event) {
                };
                reader.readAsArrayBuffer(file);
            });
        } catch(e) {
            term.exception(e);
        }
    });
})();