// channel id :  2411943
//channel api key : 4EBF206LU7IZTBU8

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

// Pin configuration
const int DHT_PIN = 15;   // Pin connected to the DHT sensor
const int LED_PIN = 13;   // Pin connected to the LED

// WiFi credentials
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";

// ThingSpeak channel details
const int myChannelNumber =  2681402;
const char* myApiKey = "48QMRKPJBEDG83FU";
const char* server = "api.thingspeak.com";

// DHT sensor and WiFi client
DHTesp dhtSensor;
WiFiClient client;

void setup() {
  Serial.begin(115200);

  // Initialize DHT sensor
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  // Set up LED pin
  pinMode(LED_PIN, OUTPUT);

  // Connect to WiFi
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));

  // Set WiFi mode to STA (station) mode
  WiFi.mode(WIFI_STA);

  // Initialize ThingSpeak client
  ThingSpeak.begin(client);
}

void loop() {
  // Read temperature and humidity from DHT sensor
  TempAndHumidity data = dhtSensor.getTempAndHumidity();

  // Update ThingSpeak fields
  ThingSpeak.setField(1, data.temperature);
  ThingSpeak.setField(2, data.humidity);

  // Check temperature and humidity conditions
  if (data.temperature > 35 || data.temperature < 12 || data.humidity > 70 || data.humidity < 40) {
    digitalWrite(LED_PIN, HIGH);  // Turn on LED if conditions are met
  } else {
    digitalWrite(LED_PIN, LOW);   // Turn off LED if conditions are not met
  }

  // Send data to ThingSpeak
  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);

  // Print temperature and humidity to serial monitor
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  // Check if data was successfully pushed to ThingSpeak
  if (x == 200) {
    Serial.println("Data pushed successfully");
  } else {
    Serial.println("Push error: " + String(x));
  }
  Serial.println("---");

  // Delay for 10 seconds before the next iteration
  delay(10000);
}