#include <WiFi.h>
#include "ThingSpeak.h"
#include <AccelStepper.h>

uint8_t LDR_PIN = T0;           // Define pin for LDR (analog pin)
#define TEMP_SENSOR_PIN 34       // Define GPIO number for analog temperature sensor on A1
#define RELAY_PIN 2              // Define GPIO number for the relay
#define STEPPER_PIN1 5           // Define GPIO number for stepper motor wire 1
#define STEPPER_PIN2 18          // Define GPIO number for stepper motor wire 2
#define STEPPER_PIN3 19          // Define GPIO number for stepper motor wire 3
#define STEPPER_PIN4 21          // Define GPIO number for stepper motor wire 4

// Define WiFi credentials
const char* ssid = "Wokwi-GUEST";      // your network SSID (name)
const char* pass = "";                 // your network password
WiFiClient client;

// ThingSpeak channel details
unsigned long myChannelNumber = 2294941;               // channel number taken from cloud
const char *myWriteAPIKey = "8XEE72XQ6LG7XFML";        // Write API key of cloud
const char *myCounterReadAPIKey = "LU5Y8F8F6YJ6SFB1";  // Read API key from cloud

AccelStepper stepper(AccelStepper::FULL4WIRE, STEPPER_PIN1, STEPPER_PIN2, STEPPER_PIN3, STEPPER_PIN4);

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
  while (!Serial) {
    ; // wait for the serial port to connect. native USB port only
  }

  // Initialize ThingSpeak
  ThingSpeak.begin(client);

  // Set pin modes for various pins
  pinMode(RELAY_PIN, OUTPUT);

  // Set up the stepper motor
  stepper.setMaxSpeed(1000.0);
  stepper.setAcceleration(500.0);
}

void loop() {
  // Connect or reconnect to WiFi
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);  // Connect to WPA/WPA2 network. Change this line if using an open or WEP network
      Serial.print(".");
      delay(5000);
    }
    Serial.println("\nConnected.");
  }

  // Read temperature from analog sensor
  float t = analogRead(TEMP_SENSOR_PIN) * 0.25;  // Convert analog value to temperature in Celsius for LM35
  Serial.print("Temperature: ");
  Serial.println(t);

  // Read light status from LDR
  int L = analogRead(LDR_PIN);
  Serial.print("LDR Value: ");
  Serial.println(L);

  // Set ThingSpeak fields with sensor values
  ThingSpeak.setField(1, t);
  ThingSpeak.setField(2, 0);  // Since we removed the humidity sensor, set humidity to 0
  ThingSpeak.setField(3, L);

  // Write to the ThingSpeak channel
  int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  Serial.print("ThingSpeak write result: ");
  Serial.println(x);

  if (x == 200) {
    Serial.println("Channel update successful.");
  } else {
    Serial.println("Channel update failed. Check ThingSpeak channel details.");
  }

  // Control relay and stepper motor based on conditions
  if (L == 0) {
    digitalWrite(RELAY_PIN, HIGH); // Turn on the relay
    stepper.moveTo(500); // Move the stepper motor to a specific position
  } else {
    digitalWrite(RELAY_PIN, LOW); // Turn off the relay
    stepper.moveTo(0); // Move the stepper motor to another position
  }

  stepper.run(); // Run the stepper motor

  delay(15000);  // Wait for 15 seconds before updating ThingSpeak again
}