#ifndef THER_NTC_HPP
#define THER_NTC_HPP
#include <cmath>
#include <zephyr/device.h>
#include <zephyr/drivers/sensor.h>
#include <zpp/result.hpp>

namespace ther {

class NtcGroup {
public:
  /// Read all NTC sensors, return the maximum temperature value.
  /// Returns error if every sensor read fails.
  static auto GetSensorValue() -> zpp::result<sensor_value> {
    bool found = false;
    sensor_value max_val{};

    for (const auto *dev : s_devices) {
      if (0 != sensor_sample_fetch(dev)) {
        continue;
      }

      sensor_value val{};
      if (0 != sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &val)) {
        continue;
      }

      if (!found || val.val1 > max_val.val1 ||
          (val.val1 == max_val.val1 && val.val2 > max_val.val2)) {
        max_val = val;
        found = true;
      }
    }

    if (found) {
      return max_val;
    }

    return zpp::error_code::k_io;
  }

private:
  inline static const device *s_devices[] = {
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc1)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc2)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc3)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc4)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc5)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc6)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc7)),
      DEVICE_DT_GET(DT_NODELABEL(pole_ntc8)),
  };
};

} // namespace ther

#endif // THER_NTC_HPP