#include <WiFi.h>
  #include <HTTPClient.h>
 #include <WiFiClientSecure.h>

#define ThermistorPin 35
#define LDR_PIN       34

#define R1  10000
#define C1  (float)1.009249522e-03
#define C2  (float)2.378405444e-04
#define C3  (float)2.019202697e-07

//Things to change
//const char * ssid = "stech";
//const char * password = "asdfg321";

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

// Crea servidor llamado "server" y establece el puerto 80 para acceder
WiFiServer server(80);      



void setup() {
  //Configura D2 como salida y lo pone en un estado bajo (0)
  //pinMode(LED, OUTPUT);
  //digitalWrite(LED, LOW);

  //Inicia puerto serial a velocidad de 115200 baudios
  Serial.begin(115200);  
  delay(10);
   

  Serial.println();
  Serial.println("Configurando");

  // Inicia conexión WiFi con las datos de la red especificados
  WiFi.begin(ssid, password);     //configurando las credenciales

  Serial.print("Conectandome");
  while (WiFi.status() != WL_CONNECTED)    // Espera conexión a la red
  {
    delay(500);
    Serial.print(".");                      // Imprime puntos 
  }

  Serial.println();
  Serial.print("Conectado, La dirección IP es: ");
  Serial.println(WiFi.localIP());                    // Imprime la IP del ESP32
 
  server.begin();                                   // Inicia el servidor
  Serial.println("Servidor iniciado");
  Serial.println("Ready to go");

  
}



String GOOGLE_SCRIPT_ID = "AKfycby_sYS3zIMFkFdhZRcCWrFYHDcTq_xIfHy5OOZuQkZxUGCQPb5vUM7PqqHBa5dG3G4I"; 
//https://script.google.com/macros/s/AKfycbwhcnmC6cSE_P5MKice-T6GX8pfe4rFFNiKUnY9-vuwE9hwzCA/exec?tag=adc_A0&value=123

const int sendInterval = 5000; 
float avg[3]={0,0,0};

char light_array[7];
char temp_array[7];

//updated 04.12.2019
const char * root_ca=\
"-----BEGIN CERTIFICATE-----\n" \
"MIIDujCCAqKgAwIBAgILBAAAAAABD4Ym5g0wDQYJKoZIhvcNAQEFBQAwTDEgMB4G\n" \
"A1UECxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjIxEzARBgNVBAoTCkdsb2JhbFNp\n" \
"Z24xEzARBgNVBAMTCkdsb2JhbFNpZ24wHhcNMDYxMjE1MDgwMDAwWhcNMjExMjE1\n" \
"MDgwMDAwWjBMMSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMjETMBEG\n" \
"A1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjCCASIwDQYJKoZI\n" \
"hvcNAQEBBQADggEPADCCAQoCggEBAKbPJA6+Lm8omUVCxKs+IVSbC9N/hHD6ErPL\n" \
"v4dfxn+G07IwXNb9rfF73OX4YJYJkhD10FPe+3t+c4isUoh7SqbKSaZeqKeMWhG8\n" \
"eoLrvozps6yWJQeXSpkqBy+0Hne/ig+1AnwblrjFuTosvNYSuetZfeLQBoZfXklq\n" \
"tTleiDTsvHgMCJiEbKjNS7SgfQx5TfC4LcshytVsW33hoCmEofnTlEnLJGKRILzd\n" \
"C9XZzPnqJworc5HGnRusyMvo4KD0L5CLTfuwNhv2GXqF4G3yYROIXJ/gkwpRl4pa\n" \
"zq+r1feqCapgvdzZX99yqWATXgAByUr6P6TqBwMhAo6CygPCm48CAwEAAaOBnDCB\n" \
"mTAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUm+IH\n" \
"V2ccHsBqBt5ZtJot39wZhi4wNgYDVR0fBC8wLTAroCmgJ4YlaHR0cDovL2NybC5n\n" \
"bG9iYWxzaWduLm5ldC9yb290LXIyLmNybDAfBgNVHSMEGDAWgBSb4gdXZxwewGoG\n" \
"3lm0mi3f3BmGLjANBgkqhkiG9w0BAQUFAAOCAQEAmYFThxxol4aR7OBKuEQLq4Gs\n" \
"J0/WwbgcQ3izDJr86iw8bmEbTUsp9Z8FHSbBuOmDAGJFtqkIk7mpM0sYmsL4h4hO\n" \
"291xNBrBVNpGP+DTKqttVCL1OmLNIG+6KYnX3ZHu01yiPqFbQfXf5WRDLenVOavS\n" \
"ot+3i9DAgBkcRcAtjOj4LaR0VknFBbVPFd5uRHg5h6h+u/N5GJG79G+dwfCMNYxd\n" \
"AfvDbbnvRG15RjF+Cv6pgsH/76tuIMRQyV+dTZsXjAzlAcmgQWpzU/qlULRuJQ/7\n" \
"TBj0/VLZjmmx6BEP3ojY+x1J96relc8geMJgEtslQIxq/H5COEBkEveegeGTLg==\n" \
"-----END CERTIFICATE-----\n";

WiFiClientSecure client;




//NTC Temparature Reading and Processing
float getTemperature(void)
{
  static int avgArrayIndex=0;
  int Vo;
  float logR2,R2, T, Tc;
  Vo = analogRead(ThermistorPin);
  R2 = R1 * (4096.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (C1 + C2*logR2 + C3*logR2*logR2*logR2));
  Tc = T - 273.15;
  avg[avgArrayIndex++] = Tc;
  if(avgArrayIndex > 2)
  avgArrayIndex = 0;
  Tc = (avg[0] + avg[1] + avg[2])/3;
  return Tc;
}

float getLightPercentage(void)
{
  int ldrRawVal;
  float percentage;
  ldrRawVal = analogRead(LDR_PIN);    
  percentage = ((float)((ldrRawVal*100)/4096));
  return percentage;
}

void loop() {
  float lightpercentage = getLightPercentage();
  float temp = getTemperature();
  String temp_s(temp);
  String lightPer_s(lightpercentage);

  sendData("tag=adc_A0&value="+lightPer_s);
  delay(sendInterval);
}

void sendData(String params) {
   HTTPClient http;
   String url="https://script.google.com/macros/s/"+GOOGLE_SCRIPT_ID+"/exec?"+params;
   Serial.print(url);
    Serial.print("Making a request");
    http.begin(url, root_ca); //Specify the URL and certificate
    int httpCode = http.GET();  
    http.end();
    Serial.println(": done "+httpCode);
}