#include "domain/virtual_register_repository.h"
#include "services/alarm_service.h"
#include "services/hmi_editor_service.h"
#include "services/hmi_navigation_service.h"
#include "services/hmi_runtime_service.h"
#include "services/logic_editor_service.h"
#include "services/offline_simulation_service.h"
#include "services/project_service.h"
#include "services/register_monitor_service.h"
#include "services/runtime_mode_service.h"
#include "support/test_support.h"
#include "ui/hmi_editor_widget.h"
#include "ui/logic_editor_widget.h"
#include "ui/runtime_monitor_widget.h"
#include "ui/runtime_panel_controller.h"

#include <QApplication>
#include <QCoreApplication>
#include <QEventLoop>
#include <QLabel>
#include <QWidget>

#include <iostream>
#include <stdexcept>
#include <string>

namespace {

using TestProjectStorage = TestSupport::InMemoryProjectStorage;
using TestSupport::require;

ControlLogic makeAlwaysOnLogic()
{
    ControlLogic logic;
    logic.id = "queued-trace-logic";
    logic.name = "Queued trace logic";

    LadderRung rung;
    rung.id = "always-on-rung";
    rung.name = "Always on";
    rung.condition = ConditionExpression::fromWire("always-on-wire", 10);

    LogicNode output;
    output.id = "always-on-output";
    output.config = CoilNodeConfig{
        RegisterAddress{RegisterArea::M, 1}, CoilMode::Normal};
    rung.output = output;
    logic.rungs.push_back(rung);
    return logic;
}

void testQueuedOfflineTraceIsIgnoredAfterReturningToEditing()
{
    TestProjectStorage storage;
    ProjectService project_service(storage);
    VirtualRegisterRepository virtual_repository;
    OfflineSimulationService simulation_service(virtual_repository);
    OnlineLogicMonitorService online_monitor_service(virtual_repository);
    RuntimeModeService runtime_mode_service(
        project_service, simulation_service, online_monitor_service);
    HmiEditorService hmi_editor_service(project_service);
    HmiRuntimeService hmi_runtime_service(virtual_repository);
    LogicEditorService logic_editor_service(project_service);
    HmiNavigationService hmi_navigation_service(project_service);
    AlarmService alarm_service(project_service, virtual_repository);
    RegisterMonitorService register_monitor_service(virtual_repository);

    const ControlLogic logic = makeAlwaysOnLogic();
    project_service.editProject().controlLogics.push_back(logic);

    QWidget parent;
    HmiEditorWidget hmi_editor_widget(
        hmi_editor_service, hmi_runtime_service, alarm_service, &parent);
    LogicEditorWidget logic_editor_widget(logic_editor_service, &parent);
    QLabel executor_status_label(&parent);
    std::string current_logic_id = logic.id;
    logic_editor_widget.setLogicId(current_logic_id);

    RuntimePanelController controller(
        parent,
        runtime_mode_service,
        project_service,
        hmi_editor_service,
        hmi_runtime_service,
        logic_editor_service,
        hmi_navigation_service,
        alarm_service,
        register_monitor_service,
        hmi_editor_widget,
        logic_editor_widget,
        executor_status_label,
        [&current_logic_id] { return current_logic_id; },
        [&current_logic_id](const std::string &logic_id)
        {
            current_logic_id = logic_id;
        },
        [](const std::string &) {},
        [](const QString &, int) {},
        [](const QString &) {},
        [] {});
    controller.configure();

    require(runtime_mode_service.enterOfflineRunning().succeeded,
            "offline simulation must start for queued trace regression");
    controller.enterRuntime(
        {}, logic.id, runtime_mode_service.mode(),
        runtime_mode_service.plcConnectionState());
    QLabel *logic_label = controller.runtimeMonitorWidget()
        ->findChild<QLabel *>(QStringLiteral("logicLabel"));
    QLabel *notice_label = controller.runtimeMonitorWidget()
        ->findChild<QLabel *>(QStringLiteral("logicNoticeLabel"));
    require(logic_label != nullptr && notice_label != nullptr,
            "runtime monitor must expose its local trace labels");
    require(logic_label->text() == QStringLiteral("梯形图运行状态")
                && !notice_label->isVisible(),
            "offline runtime must keep the normal ladder trace heading");
    controller.runtimeMonitorWidget()->setMode(
        ApplicationMode::OnlineRunning, PlcConnectionState::Connected);
    require(logic_label->text() == QStringLiteral("本地推算轨迹")
                && notice_label->isVisible()
                && notice_label->text().contains(QStringLiteral("不写入 PLC 程序或 M/D"))
                && notice_label->text().contains(QStringLiteral("HMI 和自由监控仍可写 PLC")),
            "online runtime must explain the read-only local trace boundary");
    controller.runtimeMonitorWidget()->setMode(
        ApplicationMode::OfflineRunning, PlcConnectionState::Disconnected);
    require(simulation_service.executeOnce().succeeded,
            "offline simulation must produce a trace before editing");
    require(simulation_service.traceSnapshot()
                .forLogic(logic.id).rungValues.at("always-on-rung"),
            "the queued trace must contain an energized rung");

    require(runtime_mode_service.enterEditing().succeeded,
            "offline simulation must return to editing before queued delivery");
    controller.leaveRuntime(
        runtime_mode_service.mode(), runtime_mode_service.plcConnectionState());
    logic_editor_widget.clearRuntimeTrace();
    require(!logic_editor_widget.runtimeTraceEnabled(),
            "editing transition must initially clear the runtime trace");

    QCoreApplication::processEvents(QEventLoop::AllEvents);
    require(!logic_editor_widget.runtimeTraceEnabled(),
            "a queued offline scan must not restore the trace after returning to editing");
}

} // namespace

int main(int argc, char *argv[])
{
    qputenv("QT_QPA_PLATFORM", QByteArrayLiteral("offscreen"));
    QApplication application(argc, argv);
    try
    {
        testQueuedOfflineTraceIsIgnoredAfterReturningToEditing();
    }
    catch (const std::exception &error)
    {
        std::cerr << "runtime panel controller tests failed: "
                  << error.what() << '\n';
        return 1;
    }

    std::cout << "runtime panel controller tests passed\n";
    return 0;
}