/**
   ESP32 + DHT22 + ThingSpeak Example using Wokwi
   By IoT Frontier
*/

#include <WiFi.h>

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

// Wi-Fi Credentials
const char* WIFI_NAME = "Wokwi-GUEST"; // Replace with your Wi-Fi SSID
const char* WIFI_PASSWORD = "";       // Replace with your Wi-Fi password (Wokwi-GUEST has no password)

// ThingSpeak Credentials
const int myChannelNumber = 2820767;          // Replace with your ThingSpeak channel number
const char* myApiKey = "GJYYPK7Y8Z9XKEGW";    // Replace with your ThingSpeak API key
const char* server = "api.thingspeak.com";    // ThingSpeak server address

// DHT22 Sensor Pin
const int DHT_PIN = 15; // GPIO15 on ESP32 in Wokwi

DHTesp dhtSensor; // Create an instance of the DHTesp library
WiFiClient client; // Create a Wi-Fi client object

void setup() {
  Serial.begin(115200); // Initialize serial communication
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22); // Initialize the DHT22 sensor
  
  // Connect to Wi-Fi
  Serial.println("Connecting to WiFi...");
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting...");
  }
  Serial.println("WiFi Connected!");
  Serial.println("Local IP Address: " + String(WiFi.localIP())); // Display local IP address
  
  ThingSpeak.begin(client); // Initialize ThingSpeak
}

void loop() {
  // Read temperature and humidity from DHT22
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  
  // Debugging: Print temperature and humidity to Serial Monitor
  Serial.println("Temperature: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  // Send data to ThingSpeak
  ThingSpeak.setField(1, data.temperature); // Set field 1 to temperature
  ThingSpeak.setField(2, data.humidity);    // Set field 2 to humidity
  
  int responseCode = ThingSpeak.writeFields(myChannelNumber, myApiKey); // Write data to ThingSpeak
  
  if (responseCode == 200) {
    Serial.println("Data successfully sent to ThingSpeak!");
  } else {
    Serial.println("Failed to send data. HTTP error code: " + String(responseCode));
  }
  
  Serial.println("---"); // Separator for clarity
  delay(15000); // Wait for 15 seconds (ThingSpeak rate limit)
}