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#include "Server.hpp"
#include "EpistmoolServer/Protocol/Error.hpp"
#include "EpistmoolServer/ServerProperties.hpp"
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonValue>
#include <QLatin1String>
#include <QVersionNumber>
using namespace Epistmool::Server;
// TODO structured error handling similar to messages
class Server::Private
{
public:
static bool messageHeader(QJsonObject& msg, SessionId sessionId, int id)
{
msg.insert("session", sessionId.index);
msg.insert("id", id);
return true;
}
static bool messageErrInvalidVersion(QJsonObject& msg)
{
QJsonObject error;
error.insert("type", ProtocolErrors::kUnsupportedVersion.name);
error.insert("supportedVersion", ServerProperties::kVersion.toString());
msg.insert("error", error);
return true;
}
};
Server::Server(QObject* parent)
: QObject(parent)
{
mConnectionManager.setLocalConnectionsEnabled(true);
connect(&mConnectionManager, &ConnectionManager::messageRecieved, this, &Server::onMessage);
connect(&mConnectionManager, &ConnectionManager::connectionDropped, &mSessionManager, &SessionManager::dropConnection);
}
void Server::onMessage(const QJsonDocument& message, ConnectionId connId)
{
if (!message.isObject()) return;
auto root = message.object();
// Extract as empty string if non-existent
auto versionString = root.value("version").toString();
// TODO handle if id field is not here?
int id = root.value("id").toInt();
SessionId sessionId;
if (auto index = root.value("session").toInt(-1); index == -1) {
sessionId = SessionId::makeInvalid();
} else {
sessionId.index = index;
}
auto version = [&]() -> QVersionNumber {
if (versionString.isEmpty()) {
return QVersionNumber();
} else {
return QVersionNumber::fromString(versionString).normalized();
}
}();
if (version.isNull() || version >= ServerProperties::kVersion) {
qWarning() << "Message recieved with invalid version " << versionString;
QJsonObject msg;
Private::messageHeader(msg, sessionId, id);
Private::messageErrInvalidVersion(msg);
mConnectionManager.replyMessage(connId, QJsonDocument(msg));
return;
}
Session* session;
if (sessionId.isInvalid()) {
session = nullptr;
} else {
session = mSessionManager.findSession(sessionId);
}
// TODO dispatch message
}
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