#include <Arduino.h>
#include <ACS712.h> // Current sensor library
#include <INA219.h> // Voltage sensor library
#include <LiquidCrystal_I2C.h> // LCD display library (if used)

#define WATER_LEVEL_PIN A0 // Analog pin for water level sensor
#define PUMP_TEMPERATURE_PIN A1 // Analog pin for pump temperature sensor
#define RAIN_SENSOR_PIN 2 // Digital pin for rain sensor

#define RELAY1_PIN 13 // Digital pin for contactor relay 1
#define RELAY2_PIN 12 // Digital pin for contactor relay 2
#define RELAY3_PIN 11 // Digital pin for contactor relay 3

#define USER_SWITCH1_PIN 10 // Digital pin for user input switch 1
#define USER_SWITCH2_PIN 9 // Digital pin for user input switch 2
#define USER_SWITCH3_PIN 8 // Digital pin for user input switch 3

// Initialize ACS712 current sensors
ACS712 currentSensor1(A2);
ACS712 currentSensor2(A3);
ACS712 currentSensor3(A4);

// Initialize INA219 voltage sensors
INA219 voltageSensor1(5, 4);
INA219 voltageSensor2(3, 2);
INA219 voltageSensor3(1, 0);

// Initialize LCD display (if used)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define variables for sensor readings and system parameters
float waterLevel;
float pumpTemperature;
bool isRaining;
float current1, current2, current3;
float voltage1, voltage2, voltage3;

// Define system mode variables
enum SystemMode {
  MANUAL,
  AUTOMATIC
};

SystemMode systemMode = AUTOMATIC;

// Initialize user input switch states
bool userSwitch1State = false;
bool userSwitch2State = false;
bool userSwitch3State = false;

void setup() {
  // Set serial communication for debugging
  Serial.begin(115200);

  // Initialize contactor relay pins as outputs
  pinMode(RELAY1_PIN, OUTPUT);
  pinMode(RELAY2_PIN, OUTPUT);
  pinMode(RELAY3_PIN, OUTPUT);

  // Initialize user input switch pins as inputs
  pinMode(USER_SWITCH1_PIN, INPUT_PULLUP);
  pinMode(USER_SWITCH2_PIN, INPUT_PULLUP);
  pinMode(USER_SWITCH3_PIN, INPUT_PULLUP);

  // Initialize LCD display (if used)
  lcd.init();
  lcd.backlight();
  lcd.print("Water Pump System");
}

void loop() {
  // Read sensor data
  readSensorData();

  // Process sensor data and determine system status
  processSensorData();

  // Control contactor relays based on system mode and sensor data
  controlContactorRelays();

  // Handle user input switches
  handleUserInputSwitches();

  // Update LCD display (if used)
  updateLCDDisplay();

  // Delay for next loop iteration
  delay(1000);
}

void readSensorData() {
  // Read water level sensor
  waterLevel = analogRead(WATER_LEVEL_PIN);

  // Read pump temperature sensor
  pumpTemperature = analogRead(PUMP_TEMPERATURE_PIN);

  // Read rain sensor
  isRaining = digitalRead(RAIN_SENSOR_PIN) == LOW;

  // Read current sensors
  current1 = currentSensor1.getCurrentACRMS();
  current2 = currentSensor2.getCurrentACRMS();
  current3 = currentSensor3.getCurrentACRMS();

  // Read voltage sensors
  voltage1 = voltageSensor1.getBusVoltage_V() / 1000.0;
  voltage2 = voltageSensor2.getBusVoltage_V() / 1000.0;
  voltage3 = voltageSensor3.getBusVoltage_V() / 1000.0;
}

void processSensorData() {
  // Implement control logic based on sensor data and mode selection
  // (automated or manual)
}

void controlContactorRelays() {
  //