#ifndef SENSOR2_DALLAS_H
#define SENSOR2_DALLAS_H

#include "wifi.h"
#include "log.h"

#include "OneWire.h"

#include "DallasTemperature.h"

#define DALLAS_TIMEOUT_MILLISECONDS   3000

class Dallas {


private:

  OneWire oneWire;

  DallasTemperature sensors;

  time_t timestamp = 0;

  unsigned long lastMillis = 0;

  bool converting = false;

  bool converted = false;

  bool first = true;

public:

  explicit Dallas(int pin) : oneWire(pin), sensors(&oneWire) {
    sensors.begin();
    sensors.setWaitForConversion(false);
  }

  void loop() {
    if (converting) {
      if (sensors.isConversionComplete()) {
        if (first) {
          first = false;
          uint8_t count = sensors.getDeviceCount();
          if (count == 0) {
            error("No devices found!");
          } else {
            debug("Found %d devices:", count);
            uint64_t address;
            for (int index = 0; index < count; ++index) {
              sensors.getAddress((uint8_t *) &address, index);
              debug("  - 0x%016llX = %5.1f C", address, sensors.getTempC((uint8_t *) &address));
            }
          }
        }
        converting = false;
        converted = true;
      } else if (millis() - lastMillis > DALLAS_TIMEOUT_MILLISECONDS) {
        error("Timeout!");
        converting = false;
        converted = false;
      }
    } else {
      sensors.requestTemperatures();
      timestamp = getTime();
      lastMillis = millis();
      converting = true;
      converted = false;
    }
  }

  double read(uint64_t address) {
    float value = sensors.getTempC((uint8_t *) &address);
    if (value <= DEVICE_DISCONNECTED_C) {
      return NAN;
    }
    return value;
  }

  time_t getTimestamp() const {
    return timestamp;
  }

  bool isConverted() const {
    return converted;
  }

};

#endif