/* CONNECTION INSTRUCTION
  email:[email protected]
  pss: 
*/


#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL2_PPn6pgE"
#define BLYNK_TEMPLATE_NAME "WATER LEVEL MONITORING"
#define BLYNK_AUTH_TOKEN "YoX7arQQgGJjtYsnFgAxfWwauozHuE-5"

#define pump          19
#define floatSwitch   23
//#define trigger       5
//#define echoPin      18

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <HCSR04.h>
#include <LiquidCrystal_I2C.h>
#include <OneWire.h>


char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

UltraSonicDistanceSensor hc(5,18);
LiquidCrystal_I2C lcd(0x27, 20, 4);

String notification;
float level;
bool wellState,pumpState,isManual;

void setup()
{
  lcd.init();
  lcd.backlight();
  loadingdisplay();
  Serial.begin(115200);
  delay(100);
  pinMode(pump,OUTPUT);
  pinMode(floatSwitch,INPUT);
  digitalWrite(pump,HIGH);
  Blynk.begin(auth, ssid, pass);
  }

void loop()
{
 homedisplay();
 Blynk.run();
 get_data();
 send_update();
 
 if(!isManual)
 {
  if(wellState)
  {
      if(level>=25)
      {
      Blynk.virtualWrite(V1,HIGH);
      digitalWrite(pump,LOW);
      }
      if(level<=5)
      {
        Blynk.virtualWrite(V1,LOW);
        digitalWrite(pump,HIGH);
      }
  }
  else
  {
      digitalWrite(pump,HIGH);
      pumpState=HIGH;
      Blynk.virtualWrite(V1,pumpState);
  }
 }
 else
 {
    digitalWrite(pump,HIGH);
 }
}

BLYNK_WRITE(V3)
{
  int data=param.asInt();
  if(data!=isManual)
  {
    isManual=data;
    Serial.println(isManual?"SYSTEM RUN MANUAL":"SYSTEM RUN AUTOMATIC");
  }
}

void get_data() 
{
  level= hc.measureDistanceCm();
  Serial.print("level is:");
  Serial.println(level); 
  //////////////////
  wellState=digitalRead(floatSwitch);
  Serial.print("WATER AMOUNT IN WELL IS:");
  Serial.println(wellState?"ENOUGH":"NOT SUFFICIENT"); 
}

void send_update() 
{     
  Blynk.virtualWrite(V0,level);
  Blynk.virtualWrite(V1,pumpState);
  Blynk.virtualWrite(V2,wellState);  
}


void loadingdisplay()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("     WATER LEVEL    "); 
  lcd.setCursor(0,1);
  lcd.print(" MONITORING VIA IoT "); 
  lcd.setCursor(0,2);
  lcd.print(" SYSTEM INITIALIZE ");
  lcd.setCursor(0,3);
  lcd.print("PLEASE WAIT");
  for(int k=11;k<20;k++)
  {
    lcd.setCursor(k,3);
    lcd.print(".");
    delay(500);
  }
}

void homedisplay()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("WATER LEVEL:"); 
  lcd.setCursor(12,0);
  lcd.print(level,2); 
  lcd.setCursor(0,1);
  lcd.print("WELL :"); 
  lcd.setCursor(6,1);
  lcd.print(wellState?"ENOUGH":"INSUFICIENT");
  lcd.setCursor(0,2);
  lcd.print("PUMP ACTION:");
  lcd.setCursor(12,2);
  lcd.print(pumpState?"OFF":"ON"); 
  lcd.print(notification);
  delay(1000);
}