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/*
* Copyright (C) 2018 IoT.bzh
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "qafbwsclient.h"
#include "qafbwsmsg.h"
#include <QJsonDocument>
#include <QJsonArray>
#include <QtDebug>
QAfbWsClient::QAfbWsClient(QObject* parent)
: QObject{parent}
, m_nextCallId{0}
{
connect(&m_socket, SIGNAL(connected()), this, SLOT(onSocketConnected()));
connect(&m_socket, SIGNAL(disconnected()), this, SLOT(onSocketDisconnected()));
connect(&m_socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(onSocketError(QAbstractSocket::SocketError)));
}
QUrl QAfbWsClient::url() const
{
return m_socket.requestUrl();
}
QSharedPointer<QAfbWsMsg> QAfbWsClient::call(const QString& api, const QString& verb, const QJsonValue& args)
{
while(m_calls.constFind(m_nextCallId) != m_calls.cend()) m_nextCallId++; // Make sure that callId is not currently used
qDebug() << "QAfbWsClient::call(" << api << ", " << verb << ", " << args << ")";
QJsonArray arr;
arr.append(static_cast<int>(AfMsgType::Call));
arr.append(m_nextCallId);
arr.append(api + "/" + verb);
arr.append(args);
QJsonDocument doc;
doc.setArray(arr);
QSharedPointer<QAfbWsMsg> msg(new QAfbWsMsg(m_nextCallId, api, verb));
m_calls[m_nextCallId] = msg;
// TODO: handle failure of sendTextMessage
m_socket.sendTextMessage(doc.toJson(QJsonDocument::Compact));
qDebug() << "m_socket.sendTextMessage(" << doc.toJson(QJsonDocument::Compact) << ")";
m_nextCallId++;
return msg;
}
void QAfbWsClient::onSocketConnected()
{
qDebug() << "QAfbWsClient::onSocketConnected()";
connect(&m_socket, SIGNAL(textMessageReceived(QString)), this, SLOT(onSocketTextMessageReceived(QString)));
emit connected();
}
void QAfbWsClient::onSocketDisconnected()
{
qDebug() << "QAfbWsClient::onSocketDisconnected()";
m_nextCallId = 0;
disconnect(&m_socket, SIGNAL(textMessageReceived(QString)), this, SLOT(onSocketTextMessageReceived(QString)));
emit disconnected();
}
void QAfbWsClient::onSocketError(QAbstractSocket::SocketError err)
{
qDebug() << "QAfbWsClient::onSocketError(" << err << ")";
emit error(err, m_socket.errorString());
}
void QAfbWsClient::onSocketTextMessageReceived(QString msg)
{
qDebug() << "QAfbWsClient::onSocketTextMessageReceived(" << msg << ")";
if (msg.size() == 0)
{
qCritical() << "QAfbWsClient::onSocketTextMessageReceived: received an empty message.";
return;
}
QJsonDocument doc = QJsonDocument::fromJson(msg.toUtf8());
if (doc.isEmpty() || doc.isNull() || !doc.isArray())
{
qCritical() << "QAfbWsClient::onSocketTextMessageReceived: received an invalid message.";
return;
}
QJsonArray arr = doc.array();
AfMsgType msgType = static_cast<AfMsgType>(arr[0].toInt());
int callId = arr[1].isString() ? arr[1].toString().toInt() : arr[1].toInt();
QString api;
QJsonValue value;
switch(msgType)
{
case AfMsgType::Call:
qCritical() << "QAfbWsClient::onSocketTextMessageReceived: Client received a call, which should not happen.";
break;
case AfMsgType::Event:
qDebug() << "QAfbWsClient::onSocketTextMessageReceived: Client received an event.";
// TODO: handle events
value = arr[3];
break;
case AfMsgType::RetOk:
case AfMsgType::RetErr:
{
value = arr[2];
QMap<int, QSharedPointer<QAfbWsMsg>>::const_iterator it = m_calls.find(callId);
if (it == m_calls.end())
{
qCritical() << "QAfbWsClient::onSocketTextMessageReceived: received a response to a not found query.";
return;
}
QSharedPointer<QAfbWsMsg> m = *it;
m_calls.remove(callId);
m->close(msgType, value);
}
break;
default:
qCritical() << "QAfbWsClient::onSocketTextMessageReceived: Client received an unsupported message.";
break;
}
}
void QAfbWsClient::open(const QUrl& url)
{
qDebug() << "QAfbWsClient::open(" << url << ")";
m_socket.open(url);
}
void QAfbWsClient::close()
{
qDebug() << "QAfbWsClient::close()";
m_socket.close();
}
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