#include <AceButton.h>
#include <Preferences.h>

Preferences pref;
using namespace ace_button;

// GPIO for Relay (Appliance Control)
static uint8_t relay1 = 15;

// GPIO for Relay (Fan Speed Control)
static uint8_t Speed1 = 21;
static uint8_t Speed2 = 19;
static uint8_t Speed4 = 18;

// GPIO for Fan Regulator Knob
static uint8_t fan_switch = 33;
static uint8_t s1 = 27;
static uint8_t s2 = 14;
static uint8_t s3 = 12;
static uint8_t s4 = 13;

// Flags for Fan Speed
bool speed1_flag = 1;
bool speed2_flag = 1;
bool speed3_flag = 1;
bool speed4_flag = 1;
bool speed0_flag = 1;

int FanState      = 0 ;

int Slider_Value        = 0;
int curr_speed          = 0;
bool fan_power          = 0;

ButtonConfig config5;
AceButton button5(&config5);
void handleEvent5(AceButton*, uint8_t, uint8_t);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  pref.begin("Relay_State", false);
  // Set the Relays GPIOs as output mode
  pinMode(relay1, OUTPUT);

  //Turning All Relays Off by default
  digitalWrite(relay1, LOW);

  // Set the Relays GPIOs as output mode
  pinMode(Speed1, OUTPUT);
  pinMode(Speed2, OUTPUT);
  pinMode(Speed4, OUTPUT);

  //Turning All Relays Off by default
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);

  pinMode(fan_switch, INPUT_PULLUP);
  pinMode(s1, INPUT_PULLUP);
  pinMode(s2, INPUT_PULLUP);
  pinMode(s3, INPUT_PULLUP);
  pinMode(s4, INPUT_PULLUP);

  config5.setEventHandler(button5Handler);
  button5.init(fan_switch);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation

  button5.check();
  fan();
}

//functions for defineing manual switch
void button5Handler(AceButton* button, uint8_t eventType, uint8_t buttonState)
 {
  Serial.println("EVENT5");
  switch (eventType)
   {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      if (curr_speed == 0)
      {
        speed_0();
      }
      if (curr_speed == 1)
      {
        speed_1();
      }
      if (curr_speed == 2)
      {
        speed_2();
      }
      if (curr_speed == 3)
      {
        speed_3();
      }
      if (curr_speed == 4)
      {
        speed_4();
      }
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      digitalWrite(Speed1, LOW);
      digitalWrite(Speed2, LOW);
      digitalWrite(Speed4, LOW);
      fan_power = 0;
      break;
  }
}

// function for controling fan using regulator
void fan()
{
  if ( digitalRead(s1) == LOW && speed1_flag == 1)
  {
    speed_1();
    speed1_flag = 0;
    speed2_flag = 1;
    speed3_flag = 1;
    speed4_flag = 1;
    speed0_flag = 1;
  }
  if (digitalRead(s2) == LOW && digitalRead(s3) == HIGH && speed2_flag == 1)
  {
    speed_2();
    speed1_flag = 1;
    speed2_flag = 0;
    speed3_flag = 1;
    speed4_flag = 1;
    speed0_flag = 1;
  }
  if (digitalRead(s2) == LOW && digitalRead(s3) == LOW && speed3_flag == 1)
  //if (digitalRead(s2) == HIGH && digitalRead(s3) == LOW && speed3_flag == 1)
  {
    speed_3();
    speed1_flag = 1;
    speed2_flag = 1;
    speed3_flag = 0;
    speed4_flag = 1;
    speed0_flag = 1;
  }
  if (digitalRead(s4) == LOW  && speed4_flag == 1)
  {
    speed_4();
    speed1_flag = 1;
    speed2_flag = 1;
    speed3_flag = 1;
    speed4_flag = 0;
    speed0_flag = 1;
  }
  if (digitalRead(s1) == HIGH && digitalRead(s2) == HIGH && digitalRead(s3) == HIGH && digitalRead(s4) == HIGH  && speed0_flag == 1)
  {
    speed_0();
    speed1_flag = 1;
    speed2_flag = 1;
    speed3_flag = 1;
    speed4_flag = 1;
    speed0_flag = 0;
  }
}

//functions for defineing of speeds
void speed_0()
{
  //All Relays Off - Fan at speed 0
  Serial.println("SPEED 0");
  fan_power = 0;
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);
  pref.putInt("Fan", curr_speed);

}

void speed_1()
{
  //Speed1 Relay On - Fan at speed 1
  Serial.println("SPEED 1");
  curr_speed = 1;
  fan_power = 1;
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);
  delay(1000);
  digitalWrite(Speed1, HIGH);
  pref.putInt("Fan", curr_speed);
}

void speed_2()
{
  //Speed2 Relay On - Fan at speed 2
  Serial.println("SPEED 2");
  curr_speed = 2;
  fan_power = 1;
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);
  delay(1000);
  digitalWrite(Speed2, HIGH);
  pref.putInt("Fan", curr_speed);
}

void speed_3()
{
  //Speed1 & Speed2 Relays On - Fan at speed 3
  Serial.println("SPEED 3");
  curr_speed = 3;
  fan_power = 1;
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);
  delay(1000);
  digitalWrite(Speed1, HIGH);
  digitalWrite(Speed2, HIGH);
  pref.putInt("Fan", curr_speed);

}

void speed_4()
{
  //Speed4 Relay On - Fan at speed 4
  Serial.println("SPEED 4");
  curr_speed = 4;
  fan_power = 1;
  digitalWrite(Speed1, LOW);
  digitalWrite(Speed2, LOW);
  digitalWrite(Speed4, LOW);
  delay(1000);
  digitalWrite(Speed4, HIGH);
  pref.putInt("Fan", curr_speed);
}