#pragma once

#include "FSMTreppe2/FSMTreppe2.h"
#include "PCA9685.h"

// #define LDRDEBUG  // comment in to override LDR measurement 

#define LDR_HYS 5.0  // Hysteresis for switching off FSM [lux]

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

#define INT_TIME 20  // interrupt intervall [ms]

class Treppe {
private:
    const uint8_t stufen;
    uint16_t time_per_stair = 300;  // dimmtime per stair [ms]
    uint16_t idle_brightness = 100;
    uint16_t idle_bright_internal = 0;
    uint16_t active_brightness = 500;

    uint16_t ldr_schwelle = 7;      // activation value for FSM [lx]

    uint16_t start_pwm = 0;
    uint16_t ziel_pwm  = 0;
    
    bool anim_beendet = true;
    uint8_t stufe = 0;
    uint16_t current_tick = 0;
    float current_pwm = 0.0;
    uint16_t ticks_pro_stufe = 0;
    float differenz_pwm_pro_tick = 0.0;
    
    // 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_RUHEZUSTAND      =1,
        ST_AUFDIMMEN_HOCH   =2,
        ST_WARTEN_HOCH      =3,
        ST_ABDIMMEN_HOCH    =4,
        ST_AUFDIMMEN_RUNTER =5,
        ST_WARTEN_RUNTER    =6,
        ST_ABDIMMEN_RUNTER  =7
    };
    enum fsm_laufrichtung_t {
        LR_RUNTER=0,
        LR_HOCH=1
    };
    enum fsm_dimmrichtung_t {
        DR_ABDIMMEN=0,
        DR_AUFDIMMEN=1
    };

    /* DIMM */
    bool dimm_stufe(uint8_t stufe);
    void anim_tick();
    void start_animation();
    void berechne_dimmer();
    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();
        berechne_dimmer();
    }
    ~Treppe() {
        FSMTreppe_Obj.terminate();
    }

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

    // Parameter section
    void set_idle_pwm(uint16_t _idle_brightness);
    void activate_idle_pwm(bool active);
    void set_active_pwm(uint16_t _active_brightness);
    void set_time_per_stair(uint16_t _time_per_stair);
};