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#include <OneWire.h>
#include <DallasTemperature.h>
#include <NewPing.h>
#include <SD.h>
#include <SPI.h>

// Pin definitions
#define ONE_WIRE_BUS 2        // Data wire for temperature sensors
#define TRIG_PIN 3            // Trigger pin for ultrasonic sensor
#define ECHO_PIN 4            // Echo pin for ultrasonic sensor
#define TURBIDITY_PIN A0      // Analog pin for turbidity sensor
#define CURRENT_SENSOR_PIN A1 // Analog pin for current sensor
#define VOLTAGE_SENSOR_PIN A2 // Analog pin for voltage sensor
#define SD_CS_PIN 10          // Chip select pin for SD card module

// Constants
#define MAX_DISTANCE 200 // Maximum distance for ultrasonic sensor

// Objects
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature tempSensors(&oneWire);
NewPing sonar(TRIG_PIN, ECHO_PIN, MAX_DISTANCE);
File dataFile;

void setup() {
 // Initialize serial communication
 Serial.begin(9600);

 // Initialize temperature sensors
 tempSensors.begin();
 
 // Initialize SD card
 if (!SD.begin(SD_CS_PIN)) {
   Serial.println("SD card initialization failed!");
   return;
 }
 Serial.println("SD card initialized.");

 // Create or open the data file
 dataFile = SD.open("data.txt", FILE_WRITE);
 if (dataFile) {
   dataFile.println("Timestamp,Temp1,Temp2,Temp3,Temp4,Distance,Turbidity,Current,Voltage");
   dataFile.close();
 } else {
   Serial.println("Error opening data file!");
 }
}

void loop() {
 // Get timestamp
 unsigned long timestamp = millis();

 // Read temperature sensors
 tempSensors.requestTemperatures();
 float temp1 = tempSensors.getTempCByIndex(0);
 float temp2 = tempSensors.getTempCByIndex(1);
 float temp3 = tempSensors.getTempCByIndex(2);
 float temp4 = tempSensors.getTempCByIndex(3);

 // Read ultrasonic sensor
 unsigned int distance = sonar.ping_cm();

 // Read turbidity sensor
 int turbidity = analogRead(TURBIDITY_PIN);

 // Read current sensor
 int current = analogRead(CURRENT_SENSOR_PIN);

 // Read voltage sensor
 int voltage = analogRead(VOLTAGE_SENSOR_PIN);

 // Log data
 logData(timestamp, temp1, temp2, temp3, temp4, distance, turbidity, current, voltage);

 // Wait for one hour (3600000 milliseconds)
 delay(3600000);
}

void logData(unsigned long timestamp, float temp1, float temp2, float temp3, float temp4, unsigned int distance, int turbidity, int current, int voltage) {
 // Open the file for writing
 dataFile = SD.open("data.txt", FILE_WRITE);
 if (dataFile) {
   // Write the data to the file
   dataFile.print(timestamp);
   dataFile.print(",");
   dataFile.print(temp1);
   dataFile.print(",");
   dataFile.print(temp2);
   dataFile.print(",");
   dataFile.print(temp3);
   dataFile.print(",");
   dataFile.print(temp4);
   dataFile.print(",");
   dataFile.print(distance);
   dataFile.print(",");
   dataFile.print(turbidity);
   dataFile.print(",");
   dataFile.print(current);
   dataFile.print(",");
   dataFile.println(voltage);
   dataFile.close(); // Close the file
   Serial.println("Data logged.");
 } else {
   Serial.println("Error opening data file!");
 }
}