#pragma once

#include "fgc/IEnvSensor.h"
#include "fgc/IMotorController.h"

#include <functional>

namespace fgc {

// A fan driven at half speed or more whose tach reads nothing: dead, jammed or
// unplugged. Only meaningful where a tach is wired - without one rpm is always 0.
inline bool fanLooksStalled(const McuEnvReading& r) {
    return r.fan_duty >= 128 && r.fan_rpm == 0;
}

// An ambient DHT11 wired to the motor MCU ([Hardware] env = dht11) - the legacy
// towers' sensor. The firmware reads it every 10 s and prints an ENV line; this
// serves the latest one through the ordinary IEnvSensor interface, so the
// sensors panel, the log and `test hardware env` treat it like any other.
//
// No reading when the firmware's last read failed its checksum, or when no ENV
// line has arrived for 2.5 read periods - a firmware built without the sensor,
// or a link that has gone quiet.
class McuEnvSensor : public IEnvSensor {
public:
    static constexpr long long kStaleMs = 25000;

    explicit McuEnvSensor(IMotorController& motor, std::function<long long()> now_ms = {});

    void start() override {}
    void stop() override {}
    bool connected() const override;
    std::optional<EnvSample> sample() override;
    std::string name() const override { return "DHT11"; }

private:
    std::optional<EnvSample> current() const;

    IMotorController&          motor_;
    std::function<long long()> now_ms_;
};

}  // namespace fgc