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function isObject(o) {
return Object.prototype.toString.call(o) === '[object Object]';
}
function ge(id) {
return document.getElementById(id)
}
function cancelEvent(evt) {
if (evt.preventDefault) evt.preventDefault();
if (evt.stopPropagation) evt.stopPropagation();
evt.cancelBubble = true;
evt.returnValue = false;
return false;
}
function errorText(e) {
return e instanceof Error ? e.message : e+''
}
(function() {
function request(method, url, data, callback) {
data = data || null;
if (typeof callback != 'function') {
throw new Error('callback must be a function');
}
if (!url)
throw new Error('no url specified');
switch (method) {
case 'GET':
if (isObject(data)) {
for (var k in data) {
if (data.hasOwnProperty(k))
url += (url.indexOf('?') === -1 ? '?' : '&')+encodeURIComponent(k)+'='+encodeURIComponent(data[k])
}
}
break;
case 'POST':
if (isObject(data)) {
var sdata = [];
for (var k in data) {
if (data.hasOwnProperty(k))
sdata.push(encodeURIComponent(k)+'='+encodeURIComponent(data[k]));
}
data = sdata.join('&');
}
break;
}
var xhr = new XMLHttpRequest();
xhr.open(method, url);
if (method === 'POST')
xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if ('status' in xhr && !/^2|1223/.test(xhr.status))
throw new Error('http code '+xhr.status)
callback(null, JSON.parse(xhr.responseText));
}
};
xhr.onerror = function(e) {
callback(e, null);
};
xhr.send(method === 'GET' ? null : data);
return xhr;
}
window.ajax = {
get: request.bind(request, 'GET'),
post: request.bind(request, 'POST')
}
})();
function lock(el) {
el.setAttribute('disabled', 'disabled');
}
function unlock(el) {
el.removeAttribute('disabled');
}
function initNetworkSettings() {
function setupField(el, value) {
if (value !== null)
el.value = value;
unlock(el);
}
var doneRequestsCount = 0;
function onRequestDone() {
doneRequestsCount++;
if (doneRequestsCount === 2) {
ge('loading_label').style.display = 'none';
}
}
var form = document.forms.network_settings;
form.addEventListener('submit', function(e) {
if (!form.nid.value.trim()) {
alert('Введите node id');
return cancelEvent(e);
}
if (form.psk.value.length < 8) {
alert('Неверный пароль (минимальная длина - 8 символов)');
return cancelEvent(e);
}
if (form.ssid.selectedIndex == -1) {
alert('Не выбрана точка доступа');
return cancelEvent(e);
}
lock(form.submit)
})
form.show_psk.addEventListener('change', function(e) {
form.psk.setAttribute('type', e.target.checked ? 'text' : 'password');
});
form.ssid.addEventListener('change', function(e) {
var i = e.target.selectedIndex;
if (i !== -1) {
var opt = e.target.options[i];
if (opt)
form.psk.value = '';
}
});
ajax.get('/status', {}, function(error, response) {
try {
if (error)
throw error;
setupField(form.nid, response.node_id || null);
setupField(form.psk, null);
setupField(form.submit, null);
onRequestDone();
} catch (error) {
alert(errorText(error));
}
});
ajax.get('/scan', {}, function(error, response) {
try {
if (error)
throw error;
form.ssid.innerHTML = '';
for (var i = 0; i < response.list.length; i++) {
var ssid = response.list[i][0];
var rssi = response.list[i][1];
form.ssid.append(new Option(ssid + ' (' + rssi + ' dBm)', ssid));
}
unlock(form.ssid);
onRequestDone();
} catch (error) {
alert(errorText(error));
}
});
}
function initUpdateForm() {
var form = document.forms.update_settings;
form.addEventListener('submit', function(e) {
cancelEvent(e);
if (!form.file.files.length) {
alert('Файл обновления не выбран');
return false;
}
lock(form.submit);
var xhr = new XMLHttpRequest();
var fd = new FormData();
fd.append('file', form.file.files[0]);
xhr.upload.addEventListener('progress', function (e) {
var total = form.file.files[0].size;
var progress;
if (e.loaded < total) {
progress = Math.round(e.loaded / total * 100).toFixed(2);
} else {
progress = 100;
}
form.submit.innerHTML = progress + '%';
});
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
var response = JSON.parse(xhr.responseText);
if (response.result === 1) {
alert('Обновление завершено, устройство перезагружается');
} else {
alert('Ошибка обновления');
}
}
};
xhr.onerror = function(e) {
alert(errorText(e))
};
xhr.open('POST', e.target.action);
xhr.send(fd);
return false;
});
}
function initApp() {
initNetworkSettings();
initUpdateForm();
}
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