#pragma once
#include <Arduino.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

class Display {
 public:
  Display();
  bool begin();
  void show(const char *line1, const char *line2);
  bool available() const { return ok_; }
  static void formatFrequency(float hz, char *out, size_t size);
  static void formatDuration(uint64_t us, char *out, size_t size);
 private:
  void fit(char *text);
  Adafruit_SSD1306 oled_;
  bool ok_ = false;
};