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

// Sensor pins and constants
const int SOIL_MOISTURE_PIN = 34;
const int DHT_PIN = 15;

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

// ThingSpeak credentials
unsigned long myChannelNumber = 3161056; // Change as necessary
char* myApiKey = "2FK41ZB9PZ2N473C";

WiFiClient client;

DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  Serial.println("Connecting...");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWi-Fi connected");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  Serial.println("-------------");
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
  float soilMoisturePercentage = map(analogRead(SOIL_MOISTURE_PIN), 0, 4095, 0, 7);

  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temperature = data.temperature;
  float humidity = data.humidity;

  Serial.print("Soil Moisture Percentage: ");
  Serial.print(soilMoisturePercentage);
  Serial.println("%");

  /*Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");*/

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  ThingSpeak.setField(1, soilMoisturePercentage);
  /*ThingSpeak.setField(2, temperature);*/
  ThingSpeak.setField(3, humidity);

  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);
  if(x == 200){
    Serial.println("Data sent to ThingSpeak successfully");
  } else {
    Serial.println("Problem sending data to ThingSpeak. HTTP error code: " + String(x));
  }

  Serial.println("-------------");

  delay(15000); // Thingspeak allows for an update every 15 seconds
}