#include <WiFi.h>    
#include <HTTPClient.h>
#include <UrlEncode.h>
#include "DHTesp.h"

const int DHT_PIN = 13;
DHTesp dhtSensor;

const char* ssid = "Wokwi-GUEST";
const char* password = "";

// +international_country_code + phone number
// Brasil +55, example: 
String phoneNumber = "+5521";
String apiKey = "";

void sendMessage(String message){

  // Data to send with HTTP POST
  String url = "https://api.callmebot.com/whatsapp.php?phone=" + phoneNumber + "&apikey=" + apiKey + "&text=" + urlEncode(message);    
  HTTPClient http;
  http.begin(url);

  // Specify content-type header
  http.addHeader("Content-Type", "application/x-www-form-urlencoded");
  
  // Send HTTP POST request
  int httpResponseCode = http.POST(url);
  if (httpResponseCode == 200){
    Serial.print("Message sent successfully\n");
  }
  else{
    Serial.println("Error sending the message");
    Serial.print("HTTP response code: ");
    Serial.println(httpResponseCode);
  }

  // Free resources
  http.end();
}

float temperature;
float humidity;
String temperatureString = "";  

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

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

  WiFi.begin(ssid, password);
  Serial.println("Connecting");
  while(WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());

  // Send Message to WhatsAPP
  sendMessage("Olá ESP32!");
  delay(1000);
}

void loop() {
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
      // Get latest sensor readings
    humidity = data.humidity;
    temperature = data.temperature;
   

    temperatureString = "Temp. agora " + String(temperature) + " ºC, com umidade de " + String(humidity) + " %";
    
  sendMessage(temperatureString);
  delay(10000);
}
; // this speeds up the simulation