// Program: Level_control-E_v4.ino
// Wokwi:   https://wokwi.com/projects/377193727837255681
// Water Tank Level Control System - Part 2

// Define I/O pins
#define Valve 25
#define Sensor 36

String Action = "Off";

void setup() {
  Serial.begin(115200);
  pinMode(Valve, OUTPUT);
  digitalWrite(Valve, LOW);  // For safety consideration
}

void loop() {
  int Sensor_Value, Water_Level;
  // String Action;

  Sensor_Value = analogRead(Sensor);
  Water_Level = map(Sensor_Value, 0, 4095, 0, 100);

  if (Water_Level < 40) {
    digitalWrite(Valve, HIGH);
    Action = " On";
  } else if (Water_Level > 60) {
    digitalWrite(Valve, LOW);
    Action = "Off";
  }

  Serial.print("Sensor value = ");
  Serial.print(leading_space(Sensor_Value));
  Serial.print(Sensor_Value);
  Serial.print("\t");
  Serial.print("Water level = ");
  Serial.print(leading_space(Water_Level));
  Serial.print(Water_Level);
  Serial.print("\t");
  Serial.print("Motor = ");
  Serial.println(Action);
  delay(500);
}

String leading_space(int x) {
  switch(String(x).length()) {
    case 1: return "   ";
      break;
    case 2: return "  ";
      break;
    case 3: return " ";
      break;
    case 4: return "";
      break;
  }
}