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

namespace ther {

template <device *...kNtcDev> class Ntc {
public:
  /// Read all NTC sensors, return the maximum temperature value.
  /// Returns error if every sensor read fails.
  static auto GetSensorValue()
      -> zpp::result<zpp::value<zpp::value_type::AMBIENT_TEMP>> {
    bool found = false;
    zpp::value<zpp::value_type::AMBIENT_TEMP> max_val;

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

      zpp::value<zpp::value_type::AMBIENT_TEMP> val;
      if (0 != sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &val))
        continue;

      if (!found || val.to_double() > max_val.to_double()) {
        max_val = val;
        found = true;
      }
    }

    if (found)
      return max_val;

    return zpp::error_code::k_io;
  }

private:
  static constexpr device *s_devices[] = {kNtcDev...};
};

} // namespace ther

#endif // THER_NTC_HPP