// This file is part of the 64k demo project.
// It implements a silent test backend for testing audio.cc without hardware.
// Useful for achieving high test coverage and triggering edge cases.

#pragma once

#if !defined(STRIP_ALL)

#include "../audio_backend.h"
#include <atomic>

// Silent backend for testing - no audio output, pure inspection
// Allows testing audio.cc logic (buffer management, playback time tracking)
// without requiring audio hardware or miniaudio
class SilentBackend : public AudioBackend {
 public:
  SilentBackend();
  ~SilentBackend() override;

  // AudioBackend interface
  void init() override;
  void start() override;
  void shutdown() override;
  float get_realtime_peak() override;

  // Test inspection interface
  bool is_initialized() const { return initialized_; }
  bool is_started() const { return started_; }
  int get_frames_rendered() const { return frames_rendered_.load(); }
  int get_voice_trigger_count() const { return voice_trigger_count_.load(); }

  // Manual control for testing edge cases
  void set_peak(float peak) { test_peak_ = peak; }
  void reset_stats() {
    frames_rendered_ = 0;
    voice_trigger_count_ = 0;
  }

  // Event hooks (inherited from AudioBackend)
  void on_voice_triggered(float timestamp, int spectrogram_id, float volume,
                          float pan) override;
  void on_frames_rendered(int num_frames) override;

 private:
  bool initialized_;
  bool started_;
  std::atomic<int> frames_rendered_;
  std::atomic<int> voice_trigger_count_;
  float test_peak_; // Controllable peak for testing
};

#endif /* !defined(STRIP_ALL) */