class BasicSensor {
  public:
    int pin;
    float Value;

  public:
    BasicSensor(int pin) : pin(pin), Value(0) {}

    virtual void init() {
      pinMode(pin, INPUT);
    }

    virtual void readValue() {
      float value = analogRead(pin);
      Value = value;
    }
};

class Sensor : public BasicSensor {
  public:
    float minValue, maxValue;
    bool firstRead;

  public:
    Sensor(int pin) 
      : BasicSensor(pin), minValue(0), maxValue(0), firstRead(true) {}

    virtual void readValue() override {
      float value = analogRead(pin);
      updateMinMax(value);
  }

  protected:
    void updateMinMax(float value) {
      Value = value;
        if (firstRead) {
            minValue = maxValue = value;
            firstRead = false;
        } else {
            if (value < minValue) minValue = value;
            if (value > maxValue) maxValue = value;
        }
    }
};

class Logger {
  public:
    void init() {
      Serial.begin(9600);
    }

    void logValue(const char* label, float value) {
      Serial.print(label);
      Serial.print(": ");
      Serial.println(value);
    }

    void logStr(const char* label, const char* value) {
      Serial.print(label);
      Serial.print(": ");
      Serial.println(value);
    }

    void logData(const char* label, float currentValue, float minValue, float maxValue) {
      Serial.print(label);
      Serial.print(currentValue);
      Serial.println(", Min: ");
      Serial.print(minValue);
      Serial.print(", Max: ");
      Serial.println(maxValue);
    }
};

Logger logger;

Sensor s1(A0);
Sensor s2(A1);

void setup() {
  logger.init();

  s1.init();
  s2.init();
}

void loop() {
  s1.readValue();
  s2.readValue();

  logger.logData("Temperature: ", s1.Value, s1.maxValue, s2.minValue);
  logger.logData("Photoresistor: ", s2.Value, s2.maxValue, s2.minValue);

  delay(500);
}