#ifndef TMP36_MOCK_H
#define TMP36_MOCK_H

#include "tmp36.h"

/*
 * TMP36 -- Test mock with programmable values.
 *
 * Use this in tests to control exactly what temperature your
 * application sees, without any real hardware.
 *
 * Example:
 *     Tmp36Mock sensor;
 *     sensor.setTemperature(30.0f);
 *
 *     ThermostatApp app(&sim, &sensor);
 *     app.update();
 *
 *     EXPECT_EQ(sim.getPin(FAN_PIN), HIGH);  // fan should be on
 *
 * You can also track how many times the sensor was read:
 *     sensor.resetReadCount();
 *     app.update();
 *     EXPECT_EQ(sensor.readCount(), 1);
 */
class Tmp36Mock : public TempSensor {
public:
    /// Set the temperature that readCelsius() returns.
    void setTemperature(float celsius) {
        temp_c_ = celsius;
    }

    /// Set the raw ADC value that readRaw() returns.
    void setRaw(int raw) {
        raw_ = raw;
    }

    float readCelsius() override {
        ++read_count_;
        return temp_c_;
    }

    int readRaw() override {
        ++read_count_;
        return raw_;
    }

    /// How many times has the sensor been read?
    int readCount() const { return read_count_; }

    /// Reset the read counter.
    void resetReadCount() { read_count_ = 0; }

private:
    float temp_c_ = 22.0f;   // Default: room temperature
    int raw_ = 153;           // ~22 C at 5V reference
    int read_count_ = 0;
};

#endif // TMP36_MOCK_H