Win32FileWatcher.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2023 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "Forward.hpp"
 
#include "CeresEngine/DataTypes.hpp"
#include "CeresEngine/Macros.hpp"
 
#include "CeresEngine/Foundation/SmartPtr.hpp"
#include "CeresEngine/Foundation/Container/Vector.hpp"
#include "CeresEngine/Foundation/IO/FileHandle.hpp"
#include "CeresEngine/Foundation/IO/FileWatcher.hpp"
 
#include <windows.h>
 
#include <memory>
#include <mutex>
#include <vector>
 
namespace CeresEngine {
 
    struct Win32FileWatcherState;
 
    class Win32FileWatcher final : public IFileWatcher, public std::enable_shared_from_this<Win32FileWatcher> {
        friend class Win32FileWatcherService;
 
    private:
        using Win32Handle = UPtr<void, decltype(&::CloseHandle)>;
 
        RC<Win32FileSystem> mFileSystem;
 
        ExecutionContext& mExecutionContext;
 
        FileHandle mHandle;
 
        FileEvents mEvents;
 
        bool mRecursive;
 
        Win32Handle mWin32DirectoryHandle;
 
        Win32Handle mWin32Event;
 
        ::OVERLAPPED mWin32Overlapped;
 
        char buffer[1024 * sizeof(FILE_NOTIFY_INFORMATION)];
 
    public:
        explicit Win32FileWatcher(Win32FileSystem& fs, ExecutionContext& executionContext, const FileHandle& directory, const FileEvents& events, bool recursive);
 
        Win32FileWatcher(Win32FileWatcher&&) noexcept = delete;
        Win32FileWatcher& operator=(Win32FileWatcher&&) noexcept = delete;
 
        ~Win32FileWatcher() final;
 
    public: // IFileWatcher
        [[nodiscard]] IFileSystem* getFileSystem() const final;
 
        void start() final;
 
        void stop() final;
    };
 
} // namespace CeresEngine