/**
 * fruithost | OpenSource Hosting
 *
 * @author Adrian Preuß
 * @version 1.0.0
 * @license MIT
 */

(() => {
    'use strict'
    window.addEventListener('DOMContentLoaded', () => {
        document.body.style.overflow = 'hidden';
        let destination = document.querySelector('input[name="destination"]');
        let output = document.querySelector('div.output');
        let command = document.querySelector('input[name="command"]');
        let parser = new Terminal();

        function send(cmd) {
            new Ajax(destination.value).onError(function (event, error, response) {
                console.warn(event, error, response);
            }).onSuccess(function (response) {
                if (response === '\u001B[H\u001B[2J\u001B[3J' || response === 'clear') {
                    output.innerHTML = '';
                    return;
                }

                output.innerHTML += parser.parse(response);
                command.focus();
                output.scrollTo(0, output.scrollHeight);
            }).post({
                action: 'command',
                command: cmd
            });
        }

        let history = [];
        let position = 0;

        command.addEventListener('keydown', (event) => {
            switch (event.keyCode) {
                /* Enter */
                case 13:
                    let text = command.value;
                    history.push(text);
                    position = history.length;
                    send(text);
                    command.value = '';
                    break;

                /* Up */
                case 38:
                    if (position > 0) {
                        --position;

                        if (position < 0) {
                            position = history.length - 1;
                        }

                        command.blur();
                        command.value = history[position];
                        command.focus();
                    }
                    break;

                /* Down */
                case 40:
                    if (position >= history.length) {
                        break;
                    }

                    position++;

                    if (position === history.length) {
                        command.value = '';
                    } else {
                        command.blur();
                        command.focus();
                        command.value = history[position];
                    }
                    break;
            }
        });

        send('motd');
        command.focus();
    });
})();