#ifndef __TREPPE_H
#define __TREPPE_H

#include "FSMTreppe3/FSMTreppe3.h"
#include "PCA9685.h"

// #define LDRDEBUG  // comment in to override LDR measurement
#define LDR_HYS 1 // Hysteresis for switching off FSM [lux]

#define SENSOR_OBEN 16
#define SENSOR_UNTEN 12
#define OE 14

#define INT_TIME 20 // interrupt intervall [ms]

enum vorgabe_typ_t { VORGABE_PROZENT = 0, VORGABE_12BIT = 1 };

class Treppe {
private:
  const uint8_t stufen;

  struct stairway_param_t {
    uint16_t time_ldr = 500;
    uint16_t time_per_stair = 300; // dimmtime per stair [ms]
    uint16_t idle_pwm_max = 100;
    uint16_t active_pwm = 2000;
    uint16_t ldr_schwelle = 2; // activation value for FSM [lx]
  };
  stairway_param_t parameters;

  uint16_t idle_pwm_ist = parameters.idle_pwm_max;
  uint16_t idle_pwm_soll = 0;

  struct fsm_pending_inputs_t {
    bool anim_beendet = true;
    bool sensor_unten = false;
    bool sensor_oben = false;
    bool ldr_changed = false;
  };
  fsm_pending_inputs_t fsm_pend;

  struct dimmer_t {
    uint8_t stufe = 0;
    uint16_t ticks = 0;
    uint16_t tick = 0;

    float delta_pwm = 0.0;
    float pwm = 0.0;
    uint16_t start_pwm = 0;
    uint16_t ziel_pwm = 0;
  };
  enum dimmer_type_t { DIM_STUFEN = 0, DIM_LDR = 1 };
  dimmer_t dimmer_stufen;
  dimmer_t dimmer_ldr;

  // initialize with i2c-Address 0, use Wire Library
  PCA9685 pwmController;
  FSMTreppeModelClass FSMTreppe_Obj;
  FSMTreppeModelClass::ExtU_FSMTreppe_T fsm_inputs;
  FSMTreppeModelClass::ExtY_FSMTreppe_T fsm_outputs;
  enum fsm_status_t {
    ST_INAKTIV_LDR = 0,
    ST_AUFDIMMEN_LDR = 1,
    ST_ABDIMMEN_LDR = 2,
    ST_RUHEZUSTAND = 3,
    ST_AUFDIMMEN_HOCH = 4,
    ST_WARTEN_HOCH = 5,
    ST_ABDIMMEN_HOCH = 6,
    ST_AUFDIMMEN_RUNTER = 7,
    ST_WARTEN_RUNTER = 8,
    ST_ABDIMMEN_RUNTER = 9
  };
  enum fsm_laufrichtung_t { LR_RUNTER = 0, LR_HOCH = 1 };
  enum fsm_dimmrichtung_t { DR_ABDIMMEN = 0, DR_AUFDIMMEN = 1 };

  /* DIMM */
  // bool dimmer(dimmer_t* dimmer, bool dim_type);
  bool dimmer_tick(dimmer_t *dimmer, bool dim_type);
  void start_animation(dimmer_t *dimmer, bool dim_type, uint16_t on_pwm,
                       uint16_t off_pwm);
  // void berechne_dimmer(dimmer_t* dimmer, bool dim_type);
  void print_state_on_change();

  /* LDR */
  bool read_sensor(int sensor);
  float read_ldr();
  bool check_ldr();

public:
  Treppe(uint8_t _stufen) : stufen(_stufen) { FSMTreppe_Obj.initialize(); }
  ~Treppe() { FSMTreppe_Obj.terminate(); }

  void setup();
  void task(); // call periodically

  // Parameter section
  void set_idle_pwm_max(const uint16_t value, const vorgabe_typ_t vorgabe_typ);
  void set_active_pwm(const uint16_t value, const vorgabe_typ_t vorgabe_typ);
  void set_time_per_stair(uint16_t _time_per_stair);
};

#endif // __TREPPE_H