/* Настоящие Qt-диалоги/SQLite/bridge: отказы очереди и владение вложенными окнами. */
#include "../src/channelsettingsdialog.h"
#include "../src/avatars/groupavatarmanager.h"
#include "../db/db_manager.h"
#include "../transport/gui_bridge.h"
#include <QtTest>
#include <QFileDialog>
#include <QMessageBox>
#include <QPushButton>
#include <QLabel>
#include <QPointer>
#include <QScopeGuard>
extern "C" {
#include "utun_instance.h"
#include "chat/chat_core.h"
#include "mem.h"
#include "debug_config.h"
}

#ifdef UTUN_TEST_SETTINGS_ALLOC_FAILURES
static int failAllocation;
static const char* allocationFile;
static bool rejectAllocation(const char* where) {
    if (!failAllocation || !strstr(where, allocationFile) || --failAllocation) return false;
    DEBUG_WARN(DEBUG_CATEGORY_CHAT, "[INJECT] channel settings allocation failure at %s", where); return true;
}
extern "C" void* __real_u_malloc_impl(uint32_t, const char*);
extern "C" void* __wrap_u_malloc_impl(uint32_t bytes, const char* where) {
    return rejectAllocation(where) ? nullptr : __real_u_malloc_impl(bytes, where);
}
extern "C" void* __real_u_calloc_impl(uint32_t, uint32_t, const char*);
extern "C" void* __wrap_u_calloc_impl(uint32_t count, uint32_t bytes, const char* where) {
    return rejectAllocation(where) ? nullptr : __real_u_calloc_impl(count, bytes, where);
}
#endif

struct SettingsCore {
    UASYNC* ua = uasync_create();
    UTUN_INSTANCE* inst = nullptr;
    DbManager db;
    QString channel;
    ~SettingsCore() {
        gui_bridge_set_inst(nullptr); gui_bridge_set_uasync(nullptr);
        if (ua) uasync_mark_stopped(ua);
        db.setDb(nullptr);
        if (inst) utun_instance_destroy(inst);
        if (ua) uasync_destroy(ua, 0);
    }
    bool start(bool attach = true) {
        if (!ua) return false;
        const char* config = "[global]\n"
            "my_private_key=704f2e012c8fa8768130cb0f988a997dccb628372bc5ceccacc78dcbfec5916f\n"
            "my_public_key=b3193173def895bd0fcea6f86af077c7d77216f10395275f627ac18242ec0f01\n"
            "[chatserver]\ngroup_autoconnect=0\nmember_files_enabled=0\nstorage_autoload=0\n";
        inst = utun_instance_create_from_str(ua, config);
        if (!inst || utun_core_start(inst) || chat_service_start(inst)) return false;
        chat_core_create_channel_auto(inst, "Settings");
        db.setDb(inst->topo_sqlite_db); db.setMyNodeId(inst->node_id);
        if (db.getChannels().size() != 1) return false;
        channel = db.getChannels()[0].channelId;
        if (attach) { gui_bridge_set_uasync(ua); gui_bridge_set_inst(inst); }
        return true;
    }
};

class ChannelSettingsTest : public QObject {
    Q_OBJECT
private slots:
    void initTestCase() {
        debug_config_init(); debug_set_level(DEBUG_LEVEL_WARN); gui_bridge_init();
        QApplication::setAttribute(Qt::AA_DontUseNativeDialogs);
    }

    void pendingSaveIsOwned() {
        SettingsCore core; QVERIFY(core.start());
        ChannelSettingsDialog dialog(core.channel, &core.db);
        const auto baseline = u_get_allocated_count();
        QSignalSpy accepted(&dialog, &QDialog::accepted);
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection));
        QCOMPARE(accepted.count(), 1);
        gui_bridge_set_inst(nullptr);
        QCOMPARE(u_get_allocated_count(), baseline);
    }

    void savesBothValues() {
        SettingsCore core; QVERIFY(core.start());
        ChannelSettingsDialog dialog(core.channel, &core.db);
        const auto checks = dialog.findChildren<QCheckBox*>(); QCOMPARE(checks.size(), 2);
        QVERIFY(!checks[0]->isChecked()); QVERIFY(checks[1]->isChecked());
        checks[0]->setChecked(true); checks[1]->setChecked(false);
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection));
        uasync_poll(core.ua, 0);
        QCOMPARE(core.db.getUiStateInt("ch_" + core.channel + "_auto_play_voice", -1), 1);
        QCOMPARE(core.db.getUiStateInt("ch_" + core.channel + "_sound_on_message", -1), 0);
    }

    void stoppedCoreKeepsDialogOpen() {
        SettingsCore core; QVERIFY(core.start(false));
        ChannelSettingsDialog dialog(core.channel, &core.db);
        QSignalSpy accepted(&dialog, &QDialog::accepted);
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection));
        QVERIFY(accepted.isEmpty());
        auto* status = dialog.findChild<QLabel*>("channelSettingsStatus"); QVERIFY(status && !status->text().isEmpty());
    }

#ifdef UTUN_TEST_SETTINGS_ALLOC_FAILURES
    void allocationFailure_data() {
        QTest::addColumn<QByteArray>("source"); QTest::addColumn<int>("position");
        for (const auto* source : {"channelsettingsdialog.cpp", "gui_bridge_impl.cpp"})
            for (int position : {1, 2}) QTest::newRow(qPrintable(QString("%1-%2").arg(source).arg(position))) << QByteArray(source) << position;
    }
    void allocationFailure() {
        QFETCH(QByteArray, source); QFETCH(int, position);
        SettingsCore core; QVERIFY(core.start());
        ChannelSettingsDialog dialog(core.channel, &core.db);
        QSignalSpy accepted(&dialog, &QDialog::accepted);
        const auto baseline = u_get_allocated_count();
        allocationFile = source.constData(); failAllocation = position;
        auto reset = qScopeGuard([] { failAllocation = 0; allocationFile = nullptr; });
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection));
        QCOMPARE(failAllocation, 0); QVERIFY(accepted.isEmpty());
        gui_bridge_set_inst(nullptr); QCOMPARE(u_get_allocated_count(), baseline);
        auto* status = dialog.findChild<QLabel*>("channelSettingsStatus"); QVERIFY(status && !status->text().isEmpty());
    }
#endif

    void invalidChannel_data() {
        QTest::addColumn<QString>("channel");
        for (const auto* value : {"", "0", "01", "+1", "1 ", "dm:1", "18446744073709551616"})
            QTest::newRow(value) << QString::fromLatin1(value);
        QTest::newRow("embedded-nul") << QString::fromLatin1("1\0tail", 6);
    }
    void invalidChannel() {
        QFETCH(QString, channel);
        SettingsCore core; QVERIFY(core.start());
        ChannelSettingsDialog dialog(channel, &core.db);
        QSignalSpy accepted(&dialog, &QDialog::accepted);
        QVERIFY(!dialog.findChild<QPushButton*>("deleteChannel")->isEnabled());
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection));
        QVERIFY(accepted.isEmpty());
    }

    void borrowedDbDestruction() {
        SettingsCore core; QVERIFY(core.start());
        auto* db = new DbManager; db->setDb(core.inst->topo_sqlite_db);
        ChannelSettingsDialog dialog(core.channel, db);
        QSignalSpy rejected(&dialog, &QDialog::rejected); delete db;
        QCOMPARE(rejected.count(), 1);
        QSignalSpy accepted(&dialog, &QDialog::accepted);
        QVERIFY(QMetaObject::invokeMethod(&dialog, "onSave", Qt::DirectConnection)); QVERIFY(accepted.isEmpty());
    }

    void confirmationSurvivesOwnerDeletion() {
        SettingsCore core; QVERIFY(core.start());
        QPointer<ChannelSettingsDialog> dialog = new ChannelSettingsDialog(core.channel, &core.db);
        dialog->show();
        QTimer::singleShot(0, [&] { QVERIFY(qobject_cast<QMessageBox*>(QApplication::activeModalWidget())); delete dialog.data(); });
        QVERIFY(QMetaObject::invokeMethod(dialog.data(), "onDelete", Qt::DirectConnection));
        QVERIFY(!dialog); QCOMPARE(core.db.getChannels().size(), 1);
    }

    void avatarChooserSurvivesOwnerDeletion() {
        SettingsCore core; QVERIFY(core.start()); GroupAvatarManager avatars(&core.db);
        QPointer<ChannelSettingsDialog> dialog = new ChannelSettingsDialog(core.channel, &core.db);
        dialog->show(); auto* upload = dialog->findChild<QPushButton*>("uploadGroupAvatar"); QVERIFY(upload && upload->isEnabled());
        QTimer::singleShot(0, [&] { QVERIFY(qobject_cast<QFileDialog*>(QApplication::activeModalWidget())); delete dialog.data(); });
        upload->click(); QVERIFY(!dialog);
    }
};

QTEST_MAIN(ChannelSettingsTest)
#include "test_channel_settings.moc"