XCEngine/new_editor/include/XCEditor/Foundation/UIEditorCommandDispatcher.h

#pragma once

#include <XCEditor/Foundation/UIEditorCommandRegistry.h>

#include <cstdint>
#include <string>
#include <string_view>

namespace XCEngine::UI::Editor {

struct UIEditorHostCommandEvaluationResult {
    bool executable = false;
    std::string message = {};
};

struct UIEditorHostCommandDispatchResult {
    bool commandExecuted = false;
    std::string message = {};
};

class UIEditorHostCommandHandler {
public:
    virtual ~UIEditorHostCommandHandler() = default;

    virtual UIEditorHostCommandEvaluationResult EvaluateHostCommand(
        std::string_view commandId) const = 0;

    virtual UIEditorHostCommandDispatchResult DispatchHostCommand(
        std::string_view commandId) = 0;
};

enum class UIEditorCommandEvaluationCode : std::uint8_t {
    None = 0,
    InvalidCommandRegistry,
    UnknownCommandId,
    MissingActivePanel,
    MissingHostCommandHandler,
    HostCommandDisabled
};

struct UIEditorCommandEvaluationResult {
    UIEditorCommandEvaluationCode code = UIEditorCommandEvaluationCode::None;
    bool executable = false;
    std::string commandId = {};
    std::string displayName = {};
    UIEditorWorkspaceCommand workspaceCommand = {};
    UIEditorWorkspaceCommandResult previewResult = {};
    std::string message = {};
    UIEditorCommandKind kind = UIEditorCommandKind::Workspace;

    [[nodiscard]] bool IsExecutable() const {
        return executable;
    }
};

enum class UIEditorCommandDispatchStatus : std::uint8_t {
    Dispatched = 0,
    Rejected
};

struct UIEditorCommandDispatchResult {
    UIEditorCommandDispatchStatus status = UIEditorCommandDispatchStatus::Rejected;
    bool commandExecuted = false;
    std::string commandId = {};
    std::string displayName = {};
    UIEditorWorkspaceCommand workspaceCommand = {};
    UIEditorWorkspaceCommandResult commandResult = {};
    std::string message = {};
    UIEditorCommandKind kind = UIEditorCommandKind::Workspace;
};

std::string_view GetUIEditorCommandDispatchStatusName(
    UIEditorCommandDispatchStatus status);

class UIEditorCommandDispatcher {
public:
    UIEditorCommandDispatcher() = default;
    explicit UIEditorCommandDispatcher(UIEditorCommandRegistry commandRegistry);

    const UIEditorCommandRegistry& GetCommandRegistry() const {
        return m_commandRegistry;
    }

    void SetHostCommandHandler(UIEditorHostCommandHandler* handler) {
        m_hostCommandHandler = handler;
    }

    UIEditorHostCommandHandler* GetHostCommandHandler() const {
        return m_hostCommandHandler;
    }

    UIEditorCommandRegistryValidationResult ValidateConfiguration() const;

    UIEditorCommandEvaluationResult Evaluate(
        std::string_view commandId,
        const UIEditorWorkspaceController& controller) const;

    UIEditorCommandDispatchResult Dispatch(
        std::string_view commandId,
        UIEditorWorkspaceController& controller) const;

private:
    UIEditorCommandRegistry m_commandRegistry = {};
    UIEditorHostCommandHandler* m_hostCommandHandler = nullptr;
};

} // namespace XCEngine::UI::Editor