fix: build now succeded. Added logging capabilities also

include/Producer.hpp

@@ -4,12 +4,14 @@
 // Author: Unai Blazquez <unaibg2000@gmail.com>
 #include <atomic>
 #include <chrono>
+#include <filesystem>
 #include <functional>
 #include <thread>
 
 #include "SysfsRead.hpp"
 
 using RandomFn = std::function<int()>;
+using LogFn = std::function<void(const std::string&)>;
 using SleepFn = std::function<void(std::chrono::milliseconds)>;
 class Producer
 {
@@ -17,11 +19,9 @@ class Producer
   /// @brief Construct a Producer bound to a sysfs-like control file.
   /// @param sysfs_path Path to the control file (e.g. "./fake_sysfs_input").
   /// @param send_fn    Function called whenever a new integer should be sent.
-  /// @param sleep_fn   Stub for sleeping function, allows reducing sleep on
-  /// testing
   Producer(const std::filesystem::path& sysfs_path,
            std::function<void(int)> send_fn, RandomFn random_fn,
-           SleepFn sleep_fn = default_sleep);
+           LogFn log_fn = nullptr, SleepFn sleep_fn = default_sleep);
 
   /// @brief Start the worker thread. Safe to call only once.
   void start();
@@ -42,5 +42,7 @@ class Producer
   {
     std::this_thread::sleep_for(d);
   }
+  LogFn m_log;
   std::function<void(int)> m_send;
+  std::chrono::milliseconds compute_delay(SysfsStatus status) const;
 };