FileSystemWatcher.h

#pragma once
 
#include "../StringView.h"
 
#include <functional>
#include <memory>
 
namespace Cogs {
  struct Storage;
 
  class COGSFOUNDATION_API FileSystemWatcher {
  public:
            enum class EventType {
              None = 0,
              FileCreated = 1,
              FileDeleted = 2,
              FileRenamed = 3,
              FileUpdated = 4,
            };
 
            struct Event {
              StringView  path;
              EventType   eventType;
            };
 
    using CallbackFn = std::function<void (const Event &)>;
    using CallbackList = std::vector<CallbackFn>;
 
                      FileSystemWatcher();
                      ~FileSystemWatcher();
 
            bool      watchFile(const StringView& path, const CallbackFn& callback);
            bool      unwatchFile(const StringView& path);
 
  private:
            Storage*  storage = nullptr;
  };
}