#include <FFat.h>
#include "wifi.h"

#include <WiFiClientSecure.h>

#include <Wire.h>
#include "RTClib.h"

#include "files.h"
char laikas[20] = "YYYY-MM-DD hh:mm:ss";
//#include "certs.h"
RTC_DS1307 rtc;
#include "sensor.h"


DateTime now;

char jwt[943];

uint32_t iat, jwtexp;

void setup() {
  
  Serial.begin(115200);
  
  setupDS18B20();
  
  Wire.begin(21,20);
  if (! rtc.begin()) Serial.println("Couldn't find RTC");

  wifiset();
  //configTime(3600*2, 3600*1, "pool.ntp.org");
  Serial.printf("Time: %s\n", rtc.now().toString(laikas));  

  if (!FFat.begin(true,"/ft",10,"fat")) {
    Serial.println("FFat Mount Failed");
    return;
  } else Serial.println("FFat mounted.");

  WiFiClientSecure *cln = new WiFiClientSecure;

  const char*  server = "identitytoolkit.googleapis.com";
  
  //cln->setCACert(root_ca);
  //cln->setCACert(root_ca2);
  cln->setInsecure();
  
  String reqt = "{  \"email\": \"[email protected]\", \"password\":\"123456789\",\"returnSecureToken\":true}";
  String urlt = "/v1/accounts:signInWithPassword?key=AIzaSyDozinTFHn9REYox0W2kiJc1cOQRpcxaRo";
  //identitytoolkit.googleapis.com/v1/accounts:signUp?key=AIzaSyDozinTFHn9REYox0W2kiJc1cOQRpcxaRo
  Serial.print("Getting token from password.. " + String(server));
  bool skiptoken = true;
  if (skiptoken || !cln->connect(server, 443)) {
    Serial.print(" .. FAILED!\n");
  } else { Serial.print(" ..connected .. ");  
  
    String req = "POST "+urlt+ " HTTP/1.1\r\n"
      "Host: " + String(server) + "\r\n"
      "User-Agent: ESP \r\n"
      "Accept: application/json\r\n"
      "Content-Type: application/json\r\n"
      "Content-Length: " + String(reqt.length()) + "\r\n"
      "\r\n" + reqt + "\r\n";
  
    cln->print(req);
  
    while (cln->connected()) {
      String line = cln->readStringUntil('\n');
      if (line == "\r") {
        break;
      }
    }
    while (cln->available()) {
      String c = cln->readStringUntil('\n');
      if (c.indexOf("idToken")>0) {
        Serial.printf(" token received, length %i.\n", c.length()-12);
        //Serial.println(c);
        strncpy(jwt, c.substring(12,c.length()-2).c_str(), sizeof(jwt)-1);
      } //else {Serial.println("idToken NOT found"); }

    }

    cln->stop();
    File f = FFat.open("/data.txt", FILE_APPEND);
    now = rtc.now();
    f.println(now.unixtime());
    
    Serial.println("Token " + String(jwt).substring(610,620) + " will expire at " + now.toString(laikas));
    f.println(jwt);
    f.close();
  }

}

void loop() {
  //DeviceAddress tAddr;
  //sensors.requestTemperatures(); 
  //float temperatureC = 1;//DS18B20.getTempCByIndex(0);
  //float temperatureF = sensors.getTempFByIndex(0);
  //for (int i=0; i<devices;i++) {
    //Serial.printf("\nTemperature #%i: %3.f\n", i, getTemperature(tAddr[i]));
    //DS18B20.requestTemperatures();
  //}
  sensor();
  //Serial.println("ºC");
  //sensors.getAddress(tAddr, 0);
  //for (uint8_t j = 0; j < 8; j++) Serial.printf("%02X", tAddr[j]);
  //Serial.printf(", resolution: %i ]\n", sensors.getResolution(tAddr));
  
  delay(10);
}