#include <QJsonDocument>
#include <QJsonObject>
#include <QDebug>
#include <QUuid>
#include <QSignalSpy>
#include <QTest>

#include "core/controllers/coreController.h"
#include "core/models/serverConfig.h"
#include "vpnConnection.h"
#include "secureQSettings.h"

using namespace amnezia;

class TestMultipleImports : public QObject
{
    Q_OBJECT

private:
    CoreController* m_coreController;
    SecureQSettings* m_settings;

    QString getValueFromIni(const QString &key)
    {
        QSettings settings("test_vars.ini", QSettings::IniFormat);
        return settings.value(key).toString();
    }

private slots:
    void initTestCase() {
        QString testOrg = "AmneziaVPN-Test-" + QUuid::createUuid().toString();
        m_settings = new SecureQSettings(testOrg, "amnezia-client", nullptr, false);
        
        auto vpnConnection = QSharedPointer<VpnConnection>::create(nullptr, nullptr);
        
        m_coreController = new CoreController(vpnConnection, m_settings, nullptr, this);
    }

    void cleanupTestCase() {
        m_settings->clearSettings();
        delete m_coreController;
        delete m_settings;
    }

    void init() {
        m_settings->clearSettings();
        m_coreController->m_serversRepository->invalidateCache();
        if (m_coreController->m_serversModel) {
            m_coreController->m_serversModel->updateModel(QVector<ServerConfig>(), -1, false);
        }
    }

    void testMultipleImports() {
        QString awgKey = getValueFromIni("configs/TEST_CONFIG_AWG");
        QString xrayKey = getValueFromIni("configs/TEST_CONFIG_WG");
        QString wgKey = getValueFromIni("configs/TEST_CONFIG_XRAY");

        QSignalSpy importFinishedSpy(m_coreController->m_importCoreController, &ImportController::importFinished);
        QSignalSpy defaultServerChangedSpy(m_coreController->m_serversRepository, &SecureServersRepository::defaultServerChanged);
        
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 0, "Initial servers count should be 0");
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 0, "Initial model row count should be 0");
        }

        auto importResult1 = m_coreController->m_importCoreController->extractConfigFromData(awgKey);
        QVERIFY2(importResult1.errorCode == ErrorCode::NoError, "First import should succeed");
        
        m_coreController->m_importCoreController->importConfig(importResult1.config);
        
        QVERIFY2(importFinishedSpy.count() == 1, "importFinished signal should be emitted once");
        QVERIFY2(defaultServerChangedSpy.count() == 0, "defaultServerChanged signal should NOT be emitted (default is already 0)");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 1, "After first import servers count should be 1");
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 1, "After first import model row count should be 1");
        }
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 0, "First server should be default");
        
        ServerConfig server1 = m_coreController->m_serversRepository->server(0);
        QString desc1 = server1.description();
        QVERIFY2(desc1 == "AWG Server", "First server description should match");
        
        if (m_coreController->m_serversModel) {
            QString modelDesc1 = m_coreController->m_serversModel->data(m_coreController->m_serversModel->index(0, 0), ServersModel::NameRole).toString();
            QVERIFY2(modelDesc1 == "AWG Server", "First server description in model should match");
        }

        auto importResult2 = m_coreController->m_importCoreController->extractConfigFromData(xrayKey);
        QVERIFY2(importResult2.errorCode == ErrorCode::NoError, "Second import should succeed");
        
        m_coreController->m_importCoreController->importConfig(importResult2.config);
        
        QVERIFY2(importFinishedSpy.count() == 2, "importFinished signal should be emitted twice");
        QVERIFY2(defaultServerChangedSpy.count() == 1, "defaultServerChanged signal should be emitted once (0->1, first import doesn't emit)");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 2, "After second import servers count should be 2");
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 2, "After second import model row count should be 2");
        }
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 1, "Second server should be default");
        
        ServerConfig server2 = m_coreController->m_serversRepository->server(1);
        QString desc2 = server2.description();
        QVERIFY2(desc2 == "Xray Server", "Second server description should match");
        
        if (m_coreController->m_serversModel) {
            QString modelDesc2 = m_coreController->m_serversModel->data(m_coreController->m_serversModel->index(1, 0), ServersModel::NameRole).toString();
            QVERIFY2(modelDesc2 == "Xray Server", "Second server description in model should match");
        }

        auto importResult3 = m_coreController->m_importCoreController->extractConfigFromData(wgKey);
        QVERIFY2(importResult3.errorCode == ErrorCode::NoError, "Third import should succeed");
        
        m_coreController->m_importCoreController->importConfig(importResult3.config);
        
        QVERIFY2(importFinishedSpy.count() == 3, "importFinished signal should be emitted three times");
        QVERIFY2(defaultServerChangedSpy.count() == 2, "defaultServerChanged signal should be emitted twice (0->1, 1->2, first import doesn't emit)");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 3, "After third import servers count should be 3");
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 3, "After third import model row count should be 3");
        }
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 2, "Third server should be default");
        
        ServerConfig server3 = m_coreController->m_serversRepository->server(2);
        QString desc3 = server3.description();
        QVERIFY2(desc3 == "WireGuard Server", "Third server description should match");
        
        if (m_coreController->m_serversModel) {
            QString modelDesc3 = m_coreController->m_serversModel->data(m_coreController->m_serversModel->index(2, 0), ServersModel::NameRole).toString();
            QVERIFY2(modelDesc3 == "WireGuard Server", "Third server description in model should match");
        }
    }

    void testMultipleImportsRemoval() {
        QString awgKey = getValueFromIni("configs/TEST_CONFIG_AWG");
        QString xrayKey = getValueFromIni("configs/TEST_CONFIG_XRAY");

        QSignalSpy importFinishedSpy(m_coreController->m_importCoreController, &ImportController::importFinished);
        QSignalSpy defaultServerChangedSpy(m_coreController->m_serversRepository, &SecureServersRepository::defaultServerChanged);
        QSignalSpy serverRemovedSpy(m_coreController->m_serversRepository, &SecureServersRepository::serverRemoved);
        
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 0, "Initial servers count should be 0");

        auto importResult1 = m_coreController->m_importCoreController->extractConfigFromData(awgKey);
        QVERIFY2(importResult1.errorCode == ErrorCode::NoError, "First import should succeed");
        m_coreController->m_importCoreController->importConfig(importResult1.config);
        
        auto importResult2 = m_coreController->m_importCoreController->extractConfigFromData(xrayKey);
        QVERIFY2(importResult2.errorCode == ErrorCode::NoError, "Second import should succeed");
        m_coreController->m_importCoreController->importConfig(importResult2.config);
        
        QVERIFY2(importFinishedSpy.count() == 2, "importFinished signal should be emitted twice");
        QVERIFY2(defaultServerChangedSpy.count() == 1, "defaultServerChanged signal should be emitted once (0->1, first import doesn't emit)");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 2, "After two imports servers count should be 2");
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 1, "Second server should be default");
        
        ServerConfig server0 = m_coreController->m_serversRepository->server(0);
        ServerConfig server1 = m_coreController->m_serversRepository->server(1);
        QString desc0 = server0.description();
        QString desc1 = server1.description();
        QVERIFY2(desc0 == "AWG Server", "First server description should match");
        QVERIFY2(desc1 == "Xray Server", "Second server description should match");

        defaultServerChangedSpy.clear();
        serverRemovedSpy.clear();

        m_coreController->m_serversController->removeServer(0);
        
        QVERIFY2(serverRemovedSpy.count() == 1, "serverRemoved signal should be emitted");
        QVERIFY2(serverRemovedSpy.at(0).at(0).toInt() == 0, "serverRemoved should emit index 0");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 1, "After removing first server, servers count should be 1");
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 0, "After removing first server, default index should be 0");
        
        ServerConfig remainingServer = m_coreController->m_serversRepository->server(0);
        QString remainingDesc = remainingServer.description();
        QVERIFY2(remainingDesc == "Xray Server", "Remaining server should be Xray Server");
        
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 1, "After removing first server, model row count should be 1");
            QString modelDesc = m_coreController->m_serversModel->data(m_coreController->m_serversModel->index(0, 0), ServersModel::NameRole).toString();
            QVERIFY2(modelDesc == "Xray Server", "Remaining server description in model should match");
        }

        defaultServerChangedSpy.clear();
        serverRemovedSpy.clear();

        m_coreController->m_serversController->removeServer(0);
        
        QVERIFY2(serverRemovedSpy.count() == 1, "serverRemoved signal should be emitted");
        QVERIFY2(serverRemovedSpy.at(0).at(0).toInt() == 0, "serverRemoved should emit index 0");
        QVERIFY2(m_coreController->m_serversRepository->serversCount() == 0, "After removing last server, servers count should be 0");
        QVERIFY2(m_coreController->m_serversRepository->defaultServerIndex() == 0, "After removing last server, default index should be 0");
        
        if (m_coreController->m_serversModel) {
            QVERIFY2(m_coreController->m_serversModel->rowCount() == 0, "After removing last server, model row count should be 0");
        }
    }
};

QTEST_MAIN(TestMultipleImports)
#include "testMultipleImports.moc"