#ifndef _H_OVEN_CTL
#define _H_OVEN_CTL

// 
// 
// states
#define CONFIG_STATE 0
#define START_STATE 1
#define PREHEAT_STATE 2
#define RAMP_UP_STATE 3
#define TAL_FIRST_STATE 4
#define PEAK_STATE 5
#define TAL_SECOND_STATE 6
#define RAMP_DOWN_STATE 7
#define END_STATE 8
#define ERROR_STATE 9

// error conditions
#define E_DT_MIN 1 // temperature dt too small
#define E_DT_MAX 2 // temperature dt too big
#define E_TIME_MAX 4 // reflow process does take too long
#define E_TS_TOO_SHORT 8 // Ts duration too short
#define E_TS_TOO_LONG 16 // Ts duration too long
#define E_TL_TOO_SHORT 32 // Tl duration too short
#define E_TL_TOO_LONG 64 // Tl duration too long
#define E_TP_TOO_SHORT 128 // Tp duration too short
#define E_TP_TOO_LONG 256 // Tp duration too long
#define E_CONFIG 512 // error happened in config state

#include <Arduino.h>

class LiquidCrystal;
class DFR_Key;
class Profile;

class OvenCtl {
public:

  OvenCtl();
  void handle_states();
  void set_config_state();

private:
  // system time, timestamps and temperatures from sensors
  int time; // profile seconds
  int temperature; // actual oven temp
  int last_temperature; // last oven temp
  int actual_dt; // actual difference from last to actual temperatur

  // timestamps of event beginnings/ends
  int Ts_time_start;
  int Ts_time_end;
  int Tl_time_start;
  int Tl_time_end;
  int Tp_time_start;
  int Tp_time_end;

  // thermostat
  int set_min;
  int set_max;
  int set_dt_min;
  int set_dt_max;

  // ui stuff
  boolean led_on;
  boolean disable_checks;

  // state machine
  unsigned int error_condition;
  unsigned int state;
  boolean is_oven_heating;

  LiquidCrystal * lcd;
  DFR_Key * keypad;
  Profile * profile;

  void print_status();
  void control_oven();
  void set_temp(int, int, int, int);
  void get_temp();
  void check_dt();
  void check_max_duration();

  void set_start_state();
  void set_preheat_state();
  void set_tal_first_state();
  void set_ramp_up_state();
  void set_peak_state();
  void set_tal_second_state();
  void set_ramp_down_state();
  void set_end_state();
  void set_error_state();

  void handle_config_state();
  void handle_start_state();
  void handle_ramp_up_state();
  void handle_preheat_state();
  void handle_tal_first_state();
  void handle_peak_state();
  void handle_tal_second_state();
  void handle_ramp_down_state();
  void handle_end_state();
  void handle_error_state();

  void check_Ts_duration_min();
  void check_Ts_duration_max();
  void check_Tl_duration_min();
  void check_Tl_duration_max();
  void check_Tp_duration_min();
  void check_Tp_duration_max();

  void send_state();
  void send_config();
  void reset();

  void recv_config();

  void dispatch_input_config(int);
};

#endif