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(function () {
'use strict';
var term = document.getElementById('term');
var status = document.getElementById('status');
var form = document.getElementById('input-bar');
var input = document.getElementById('cmd');
var wsUrl = window.HYBBX_WS_URL;
var ws = null;
var reconnectTimer = null;
var reconnectDelayMs = 2000;
var reconnectAttempt = 0;
function append(text) {
term.textContent += text;
term.scrollTop = term.scrollHeight;
}
function setStatus(s) {
status.textContent = s;
}
function scheduleReconnect() {
if (reconnectTimer) {
return;
}
reconnectAttempt += 1;
setStatus('reconnecting in ' + (reconnectDelayMs / 1000) + 's');
reconnectTimer = window.setTimeout(function () {
reconnectTimer = null;
connect();
}, reconnectDelayMs);
}
function setInputEnabled(enabled) {
input.disabled = !enabled;
if (enabled) {
input.focus();
}
}
function sendLine(text) {
if (!ws || ws.readyState !== WebSocket.OPEN) {
return;
}
ws.send(text + '\r');
}
function connect() {
setStatus('connecting');
setInputEnabled(false);
ws = new WebSocket(wsUrl);
ws.onopen = function () {
reconnectAttempt = 0;
setStatus('connected');
setInputEnabled(true);
};
ws.onmessage = function (ev) {
append(ev.data);
};
ws.onclose = function (ev) {
var reason = ev.reason ? ' (' + ev.reason + ')' : '';
append('\n[websocket disconnected: code ' + ev.code + reason + ']\n');
setStatus('disconnected: ' + ev.code);
ws = null;
setInputEnabled(false);
scheduleReconnect();
};
ws.onerror = function () {
setStatus('error');
setInputEnabled(false);
};
}
form.addEventListener('submit', function (ev) {
ev.preventDefault();
if (!ws || ws.readyState !== WebSocket.OPEN) {
return;
}
sendLine(input.value);
input.value = '';
input.focus();
});
connect();
})();
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