#include "domain/project_storage.h"
#include "domain/register_repository.h"
#include "services/hmi_editor_service.h"
#include "services/hmi_runtime_service.h"
#include "services/hmi_navigation_service.h"
#include "services/project_service.h"

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

namespace {

class TestProjectStorage final : public ProjectStorage
{
public:
    // 编辑服务测试只关注内存模型变更，不依赖真实文件系统
    ProjectSaveResult save(const Project &, const std::string &) override
    {
        return {true, ProjectStorageError::None, {}};
    }

    ProjectLoadResult load(const std::string &) override
    {
        return {false, {}, ProjectStorageError::FileReadFailed, {}};
    }
};

void require(bool condition, const std::string &message)
{
    if (!condition)
    {
        throw std::runtime_error(message);
    }
}

void testControlEditing()
{
    // 覆盖控件创建、移动、绑定校验、重命名冲突和删除流程
    TestProjectStorage storage;
    ProjectService project_service(storage);
    HmiEditorService service(project_service);
    const HmiEditorResult page_result = service.ensureDefaultPage();
    require(page_result.succeeded, "default HMI page creation must succeed");

    const std::string page_id = page_result.id;
    const HmiEditorResult button = service.addControl(page_id, HmiControlType::Button);
    const HmiEditorResult indicator = service.addControl(page_id, HmiControlType::Indicator);
    const HmiEditorResult display = service.addControl(
        page_id, HmiControlType::NumericDisplay);
    const HmiEditorResult input = service.addControl(page_id, HmiControlType::NumericInput);
    require(button.succeeded && indicator.succeeded && display.succeeded && input.succeeded,
            "four basic HMI controls must be added");

    const HmiPage *page = service.findPage(page_id);
    require(page != nullptr && page->controls.size() == 4,
            "all added controls must be kept in the page model");
    require(service.moveControl(page_id, button.id, {120, 80, 120, 40}).succeeded,
            "a valid control move must succeed");
    require(!service.moveControl(page_id, button.id, {790, 460, 120, 40}).succeeded,
            "a move outside the page must be rejected");

    HmiControl updated = *service.findControl(page_id, button.id);
    updated.binding = RegisterAddress{RegisterArea::D, 0};
    require(!service.updateControl(page_id, button.id, updated).succeeded,
            "buttons must reject D address bindings during editing");
    updated.binding = RegisterAddress{RegisterArea::M, 7};
    updated.text = "启动";
    require(service.updateControl(page_id, button.id, updated).succeeded,
            "a button M binding and edited text must be accepted");

    HmiControl duplicate = *service.findControl(page_id, indicator.id);
    duplicate.id = button.id;
    require(service.updateControl(page_id, indicator.id, duplicate).error
                == HmiEditorError::DuplicateId,
            "duplicate control ids must be rejected");

    require(service.removeControl(page_id, indicator.id).succeeded,
            "deleting a selected control must succeed");
    require(service.findControl(page_id, indicator.id) == nullptr,
            "deleted controls must not remain in the model");
}

void testRuntimeUsesRegisterRepository()
{
    // 运行服务只能经由仓库接口读写 M/D，不依赖具体离线实现
    VirtualRegisterRepository repository;
    HmiRuntimeService runtime_service(repository);

    HmiControl button;
    button.id = "start";
    button.type = HmiControlType::Button;
    button.binding = RegisterAddress{RegisterArea::M, 12};
    require(button.buttonOperation == HmiButtonOperation::MomentaryOn,
            "new buttons must default to momentary ON");
    require(runtime_service.operateButton(button, HmiButtonEvent::Pressed).succeeded,
            "momentary button press must be accepted by the repository");
    require(repository.readBit(*button.binding).value,
            "momentary button press must write ON");
    require(runtime_service.operateButton(button, HmiButtonEvent::Released).succeeded,
            "momentary button release must be accepted by the repository");
    require(!repository.readBit(*button.binding).value,
            "momentary button release must write OFF");

    button.buttonOperation = HmiButtonOperation::SetOn;
    require(runtime_service.operateButton(button, HmiButtonEvent::Pressed).succeeded,
            "set ON button press must succeed");
    require(repository.readBit(*button.binding).value,
            "set ON button press must write ON");
    require(runtime_service.operateButton(button, HmiButtonEvent::Released).succeeded,
            "set ON button release must be ignored successfully");
    require(repository.readBit(*button.binding).value,
            "set ON button release must keep the bit ON");

    button.buttonOperation = HmiButtonOperation::SetOff;
    require(runtime_service.operateButton(button, HmiButtonEvent::Pressed).succeeded,
            "set OFF button press must succeed");
    require(!repository.readBit(*button.binding).value,
            "set OFF button press must write OFF");

    button.buttonOperation = HmiButtonOperation::Toggle;
    require(runtime_service.operateButton(button, HmiButtonEvent::Pressed).succeeded,
            "toggle button press must succeed");
    require(repository.readBit(*button.binding).value,
            "toggle button press must invert the current value");

    HmiControl indicator;
    indicator.id = "running";
    indicator.type = HmiControlType::Indicator;
    indicator.binding = RegisterAddress{RegisterArea::M, 12};
    const HmiRuntimeReadResult indicator_value = runtime_service.readControl(indicator);
    require(indicator_value.succeeded && indicator_value.bit_value,
            "indicators must read M values through the repository");

    HmiControl numeric_input;
    numeric_input.id = "target";
    numeric_input.type = HmiControlType::NumericInput;
    numeric_input.binding = RegisterAddress{RegisterArea::D, 9};
    require(runtime_service.writeNumericInput(numeric_input, -18).succeeded,
            "numeric input runtime writes must be accepted by the repository");

    HmiControl numeric_display;
    numeric_display.id = "actual";
    numeric_display.type = HmiControlType::NumericDisplay;
    numeric_display.binding = RegisterAddress{RegisterArea::D, 9};
    const HmiRuntimeReadResult numeric_value = runtime_service.readControl(numeric_display);
    require(numeric_value.succeeded && numeric_value.word_value == -18,
            "numeric display must read D values through the repository");
}

void testPageLifecycleAndNavigation()
{
    TestProjectStorage storage;
    ProjectService project_service(storage);
    HmiEditorService service(project_service);
    const std::string main_id = service.ensureDefaultPage().id;
    require(project_service.project().initialHmiPageId == main_id,
            "the first page must become the initial HMI page");

    const HmiEditorResult settings = service.addPage("Settings");
    const HmiEditorResult maintenance = service.addPage("Maintenance");
    require(settings.succeeded && maintenance.succeeded,
            "multiple HMI pages must be creatable");
    require(service.renamePage(settings.id, "Parameters").succeeded,
            "an HMI page must be renamable by stable id");
    require(service.renamePage(maintenance.id, "Parameters").error
                == HmiEditorError::DuplicateName,
            "HMI page names must remain unique");
    require(service.movePage(maintenance.id, -1).succeeded
                && project_service.project().hmiPages.at(1).id == maintenance.id,
            "HMI page order must be editable independently from page ids");

    const HmiEditorResult label = service.addControl(main_id, HmiControlType::Label);
    require(label.succeeded
                && service.findControl(main_id, label.id)->isConfigured(),
            "the editor service must expose a configured static Label control");
    const HmiEditorResult jump = service.addControl(main_id, HmiControlType::PageJump);
    require(jump.succeeded, "the editor service must expose PageJump creation");
    HmiControl jump_control = *service.findControl(main_id, jump.id);
    jump_control.pageJump = HmiPageJumpConfig{maintenance.id};
    require(service.updateControl(main_id, jump.id, jump_control).succeeded,
            "PageJump target updates must resolve stable page ids");
    require(service.removePage(maintenance.id).error == HmiEditorError::PageReferenced,
            "a page referenced by PageJump must not be deletable");

    require(service.setInitialPage(settings.id).succeeded,
            "the user must be able to select a different initial page");
    require(service.removePage(settings.id).error
                == HmiEditorError::InitialPageCannotBeRemoved,
            "the initial page must not be deleted implicitly");

    HmiNavigationService navigation(project_service);
    const HmiNavigationResult start = navigation.start();
    require(start.succeeded && start.pageId == settings.id,
            "runtime navigation must start from the persisted initial page");
    require(navigation.navigateTo(maintenance.id).succeeded
                && navigation.currentPageId() == maintenance.id,
            "runtime navigation must switch to an existing page");
    require(navigation.navigateTo("missing").error
                == HmiNavigationError::PageNotFound,
            "runtime navigation must reject an unknown page id");
    navigation.stop();
    require(navigation.currentPageId().empty(),
            "stopping runtime navigation must clear session state");
}

} // namespace

int main()
{
    try
    {
        // 编辑和运行场景分别验证服务层两条独立职责
        testControlEditing();
        testRuntimeUsesRegisterRepository();
        testPageLifecycleAndNavigation();
    }
    catch (const std::exception &error)
    {
        std::cerr << "HMI editor service tests failed: " << error.what() << '\n';
        return 1;
    }

    std::cout << "HMI editor service tests passed\n";
    return 0;
}