#include "XNServiceManager.h"
#include "XNServiceManager_p.h"
#include "XNServiceObject.h"
#include <QLibrary>
#include <QMetaType>
#include <QObject>

XNServiceManager::XNServiceManager(QObject *parent)
	: XNBaseFrameObject(*new XNServiceManagerPrivate(this), parent)
{
	setUniqueId(4);
	setObjectName("XNServiceManager");
	Q_D(XNServiceManager);
	d->ServiceIDAssigned.resize(10000, false);
}

XNServiceManager::~XNServiceManager()
{
}

XNServiceManager::XNServiceManager(XNServiceManagerPrivate &dd, QObject *parent)
	: XNBaseFrameObject(dd, parent)
{
}

void XNServiceManager::OnInitialize()
{
	Q_D(XNServiceManager);
	LOG_INFO("XNServiceManager Initialize Success!");
	d->_status = XNFrameObjectStatus::Initialized;
	emit Initialize();
}

void XNServiceManager::OnPrepareForExecute()
{
	Q_D(XNServiceManager);
	d->_status = XNFrameObjectStatus::Ready;
	LOG_INFO("XNServiceManager is prepared!");
	emit PrepareForExecute();
}

void XNServiceManager::OnLoadService(const QString &servicePath, const QString &serviceName)
{
	Q_D(XNServiceManager);
	QLibrary lib(servicePath);
	if (lib.load()) {
		typedef void (*InitialServiceFunc)();
		QString initialServiceName = "Initial" + serviceName;
		InitialServiceFunc initialService =
			(InitialServiceFunc)lib.resolve(initialServiceName.toUtf8().constData());
		if (initialService) {
			initialService();
			QMetaType metaType = QMetaType::fromName(serviceName.toUtf8().constData());
			if (metaType.isValid()) {
				QObject *obj = static_cast<QObject *>(metaType.create());
				if (obj) {
					XNServiceObject *service = qobject_cast<XNServiceObject *>(obj);
					if (service) {
						quint32 serviceID = RegisterService();
						if (serviceID == 0) {
							LOG_WARNING("0x2174 Assign Service ID Failed, Service ID is used up!");
							delete obj;
							return;
						}
						service->setParent(this);
						service->setObjectName(serviceName);
						service->setUniqueId(serviceID);
						QString configFilePath =
							QFileInfo(servicePath).absolutePath() + "/" + serviceName + ".scfg";
						service->SetXmlPath(configFilePath);
						connect(this, &XNServiceManager::PrepareForExecute, service,
								&XNServiceObject::OnPrepareForExecute);
						service->OnInitialize();
					} else {
						LOG_WARNING("0x2175 Service %1 Instantiation Failed, Not a subclass of "
									"XNServiceObject!",
									serviceName);
						delete obj;
						return;
					}
				} else {
					LOG_WARNING(
						"0x2176 Service %1 Instantiation Failed, Not a subclass of QObject!",
						serviceName);
					delete obj;
					return;
				}
			} else {
				LOG_WARNING("0x2173 Service %1 Not found in dynamic link library %2!", serviceName,
							servicePath);
				return;
			}
		} else {
			LOG_WARNING("0x2177 Service %1 Initialization Failed, Function InitialService Not "
						"Found!",
						serviceName);
			return;
		}
	} else {
		LOG_WARNING("0x2172 Service %1 Dynamic link library loading failed! Error: %2", serviceName,
					lib.errorString());
	}
}

XNServiceObject *XNServiceManager::GetService(quint32 serviceID)
{
	Q_D(XNServiceManager);
	if (d->ServiceIDAssigned[serviceID - 20000]) {
		QList<XNServiceObject *> serviceList = findChildren<XNServiceObject *>();
		for (auto &service : serviceList) {
			if (service->getUniqueId() == serviceID)
				return service;
		}
		return nullptr;
	} else
		return nullptr;
}

quint32 XNServiceManager::RegisterService()
{
	Q_D(XNServiceManager);
	// 从20000～29999的编号中分配ID
	for (int i = 0; i < 10000; i++) {
		if (d->ServiceIDAssigned[i])
			continue;
		else {
			d->ServiceIDAssigned[i] = true;
			return i + 20000;
		}
	}
	return 0;
}