//-------------------------------------Config Blynk 
#define BLYNK_TEMPLATE_ID "TMPL6yQZZRZMn"
#define BLYNK_TEMPLATE_NAME "Smart Fish tank"
#define BLYNK_AUTH_TOKEN "PGfVH5xt981PY856bvjzHzw3eOpMo3Ic"

#include <BlynkSimpleEsp32.h>
#include <WiFi.h>

#define ssid "Wokwi-GUEST"
#define pass ""

#include <LiquidCrystal_I2C.h>
#include <Wire.h> 

//-------------------------------------Define variable
// LiquidCrystal_I2C lcd(0x27, 20, 4);

#define Bad_Pump 12   //int Bad_Pump = 12;
#define Good_Pump 14

#define WaterFloat_pin 35
int WaterFloat_val;

int State = 0;

int BlynkswStart;
int BlynkswA;
int BlynkswB;
int BlynkswC;
int BlynkswPump;

WidgetLCD lcd(V5);

//-------------------------------------Setup
void setup() {
  Serial.begin(9600);

  //--------------< Blynk >
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  //--------------< Relay & Pump >
  pinMode(Bad_Pump, OUTPUT);
  pinMode(Good_Pump, OUTPUT);
  digitalWrite(Bad_Pump, 1);  // High is turn off
  digitalWrite(Good_Pump, 1);

  //--------------< WaterFloat sensor >
  pinMode(WaterFloat_pin, INPUT);

  lcd.clear();

}

//-------------------------------------Loop
void loop() {
  Blynk.run();

  switch(State){
    case 0: //-----------< state "START" > 

      lcd.print(0, 0, "PressStartToMENU");
      if(BlynkswStart == 1){
        State = 1;
        lcd.clear();
      }
    break;

    case 1: //-----------< state "MENU" >

      lcd.print(1, 0, "A:BAD B:GOOD");
      lcd.print(1, 1, "C:WaterSenser");
      if(BlynkswA == 1){
        State = 2;
        lcd.clear();
      }else if(BlynkswB == 1){
        State = 3;
        lcd.clear();
      }else if(BlynkswC == 1){
        State = 4;
        lcd.clear();
      }
    break;

    case 2: //-----------< state "BAD_PUMP" > 

      lcd.print(0, 0, "PUMPBAD >>> ON");
      lcd.print(0, 1, "Start:Back MENU");
      if(BlynkswPump == 1){
        digitalWrite(Bad_Pump, 0);  // BAD_PUMP working.
      }else if(BlynkswPump == 0){
        digitalWrite(Bad_Pump, 1);  // BAD_PUMP stop work.
      }
      if(BlynkswStart == 1){
        State = 1;
        lcd.clear();
      }
    break;

    case 3: //-----------< state "GOOD_PUMP" > 

      lcd.print(0, 0, "PUMPGOOD >>> ON");
      lcd.print(0, 1, "Start:Back MENU");
      if(BlynkswPump == 1){
        digitalWrite(Good_Pump, 0);  // BAD_PUMP working.
      }else if(BlynkswPump == 0){
        digitalWrite(Good_Pump, 1);  // BAD_PUMP stop work.
      }
      if(BlynkswStart == 1){
        State = 1;
        lcd.clear();
      }
    break;

    case 4: //-----------< state "WATER LEVEL SENSOR" > 
      

      lcd.print(0, 0, "WATER LEVEL ->" + String(WaterFloat_val));
      lcd.print(0, 1, "Start:Back MENU");
      if(BlynkswStart == 1){
        State = 1;
        lcd.clear();
      }
    break;
  }

  WaterLevelSensor();
  
  delay(100);
}

//-------------------------------------Custom function
void WaterLevelSensor(){
  WaterFloat_val = analogRead(WaterFloat_pin);
  WaterFloat_val = WaterFloat_val == 4095 ? 0 : 1;

}

BLYNK_WRITE(V0){ // Blynk Switch Start
  if(param.asInt() == 1){
    BlynkswStart = 1;
  }else{
    BlynkswStart = 0;
  }
}

BLYNK_WRITE(V1){ // Blynk Switch A
  if(param.asInt() == 1){
    BlynkswA = 1;
  }else{
    BlynkswA = 0;
  }
}

BLYNK_WRITE(V2){ // Blynk Switch B
  if(param.asInt() == 1){
    BlynkswB = 1;
  }else{
    BlynkswB = 0;
  }
}

BLYNK_WRITE(V3){ // Blynk Switch C
  if(param.asInt() == 1){
    BlynkswC = 1;
  }else{
    BlynkswC = 0;
  }
}

BLYNK_WRITE(V4){ // Blynk Switch Pump
  if(param.asInt() == 1){
    BlynkswPump = 1;
  }else{
    BlynkswPump = 0;
  }
}