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#include <QFile>
#include <QDir>
#include "jskitmanager.h"
#include "jskitobjects.h"
JSKitManager::JSKitManager(WatchConnector *watch, AppManager *apps, AppMsgManager *appmsg, Settings *settings, QObject *parent) :
QObject(parent), _watch(watch), _apps(apps), _appmsg(appmsg), _settings(settings), _engine(0)
{
connect(_appmsg, &AppMsgManager::appStarted, this, &JSKitManager::handleAppStarted);
connect(_appmsg, &AppMsgManager::appStopped, this, &JSKitManager::handleAppStopped);
}
JSKitManager::~JSKitManager()
{
if (_engine) {
stopJsApp();
}
}
QJSEngine * JSKitManager::engine()
{
return _engine;
}
bool JSKitManager::isJSKitAppRunning() const
{
return _engine != 0;
}
QString JSKitManager::describeError(QJSValue error)
{
return QString("%1:%2: %3")
.arg(error.property("fileName").toString())
.arg(error.property("lineNumber").toInt())
.arg(error.toString());
}
void JSKitManager::showConfiguration()
{
if (_engine) {
logger()->debug() << "requesting configuration";
_jspebble->invokeCallbacks("showConfiguration");
} else {
logger()->warn() << "requested to show configuration, but JS engine is not running";
}
}
void JSKitManager::handleWebviewClosed(const QString &result)
{
if (_engine) {
QJSValue eventObj = _engine->newObject();
eventObj.setProperty("response", _engine->toScriptValue(result));
logger()->debug() << "webview closed with the following result: " << result;
_jspebble->invokeCallbacks("webviewclosed", QJSValueList({eventObj}));
} else {
logger()->warn() << "webview closed event, but JS engine is not running";
}
}
void JSKitManager::handleAppStarted(const QUuid &uuid)
{
AppInfo info = _apps->info(uuid);
if (!info.uuid().isNull() && info.isJSKit()) {
logger()->debug() << "Preparing to start JSKit app" << info.uuid() << info.shortName();
_curApp = info;
startJsApp();
}
}
void JSKitManager::handleAppStopped(const QUuid &uuid)
{
if (!_curApp.uuid().isNull()) {
if (_curApp.uuid() != uuid) {
logger()->warn() << "Closed app with invalid UUID";
}
stopJsApp();
_curApp.setUuid(QUuid()); // Clear the uuid to force invalid app
}
}
void JSKitManager::handleAppMessage(const QUuid &uuid, const QVariantMap &msg)
{
if (_curApp.uuid() == uuid) {
logger()->debug() << "received a message for the current JSKit app";
if (!_engine) {
logger()->debug() << "but engine is stopped";
return;
}
QJSValue eventObj = _engine->newObject();
eventObj.setProperty("payload", _engine->toScriptValue(msg));
_jspebble->invokeCallbacks("appmessage", QJSValueList({eventObj}));
}
}
bool JSKitManager::loadJsFile(const QString &filename)
{
Q_ASSERT(_engine);
QFile file(filename);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
logger()->warn() << "Failed to load JS file:" << file.fileName();
return false;
}
logger()->debug() << "now parsing" << file.fileName();
QJSValue result = _engine->evaluate(QString::fromUtf8(file.readAll()), file.fileName());
if (result.isError()) {
logger()->warn() << "error while evaluating JS script:" << describeError(result);
return false;
}
logger()->debug() << "JS script evaluated";
return true;
}
void JSKitManager::startJsApp()
{
if (_engine) stopJsApp();
if (_curApp.uuid().isNull()) {
logger()->warn() << "Attempting to start JS app with invalid UUID";
return;
}
_engine = new QJSEngine(this);
_jspebble = new JSKitPebble(_curApp, this);
_jsconsole = new JSKitConsole(this);
_jsstorage = new JSKitLocalStorage(_curApp.uuid(), this);
_jsgeo = new JSKitGeolocation(this);
logger()->debug() << "starting JS app";
QJSValue globalObj = _engine->globalObject();
globalObj.setProperty("Pebble", _engine->newQObject(_jspebble));
globalObj.setProperty("console", _engine->newQObject(_jsconsole));
globalObj.setProperty("localStorage", _engine->newQObject(_jsstorage));
QJSValue navigatorObj = _engine->newObject();
navigatorObj.setProperty("geolocation", _engine->newQObject(_jsgeo));
globalObj.setProperty("navigator", navigatorObj);
// Set this.window = this
globalObj.setProperty("window", globalObj);
// Shims for compatibility...
QJSValue result = _engine->evaluate(
"function XMLHttpRequest() { return Pebble.createXMLHttpRequest(); }\n"
);
Q_ASSERT(!result.isError());
// Polyfills...
loadJsFile("/usr/share/pebble/js/typedarray.js");
// Now load the actual script
loadJsFile(_curApp.path() + "/pebble-js-app.js");
// Setup the message callback
QUuid uuid = _curApp.uuid();
_appmsg->setMessageHandler(uuid, [this, uuid](const QVariantMap &msg) {
QMetaObject::invokeMethod(this, "handleAppMessage", Qt::QueuedConnection,
Q_ARG(QUuid, uuid),
Q_ARG(QVariantMap, msg));
// Invoke the slot as a queued connection to give time for the ACK message
// to go through first.
return true;
});
// We try to invoke the callbacks even if script parsing resulted in error...
_jspebble->invokeCallbacks("ready");
}
void JSKitManager::stopJsApp()
{
if (!_engine) return; // Nothing to do!
logger()->debug() << "stopping JS app";
if (!_curApp.uuid().isNull()) {
_appmsg->clearMessageHandler(_curApp.uuid());
}
_engine->collectGarbage();
_engine->deleteLater();
_engine = 0;
_jsstorage->deleteLater();
_jsstorage = 0;
_jsgeo->deleteLater();
_jsgeo = 0;
_jspebble->deleteLater();
_jspebble = 0;
}
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