#include <ESP8266WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#define D7    13
#define DHTTYPE DHT11 // DHT 11
#define DHTPIN 13 // leitura 


#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels


#define OLED_RESET     -1   // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C // If not work please scan the bus
#define OLED_SDA 14         // D6
#define OLED_SCL 12         // D5

DHT dht(DHTPIN, DHTTYPE, 50);
Adafruit_SSD1306 *display;

const char *ssid     = "IFSC";
const char *password = "campuschapeco";

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org");

String weekDays[7]={"Domingo", "Segunda", "Terca", "Quarta", "Quinta", "Sexta", "Sabado"};
String months[12]={"Janeiro", "Fevereiro", "Marco", "Abril", "Maio", "Junho", "Julho", "Agosto", "Setembro", "Outubro", "Novembro", "December"};

void setup() {

  display = new Adafruit_SSD1306(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
  Wire.begin(OLED_SDA, OLED_SCL);
  display->begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);  
  Serial.begin(115200);
  
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

// Initialize a NTPClient to get time
  timeClient.begin();
  // Set offset time in seconds to adjust for your timezone, for example:
  // GMT +1 = 3600
  // GMT +8 = 28800
//  GMT -3 = -10800
  // GMT 0 = 0
  timeClient.setTimeOffset(-10800);
}

void loop() {
  float temperatura=dht.readTemperature( ) ;
  float umidade = dht.readHumidity();  
  Serial.print("Temp ");
  Serial.println(temperatura);
  Serial.print("Umidade ");
  Serial.println(umidade);
  
  timeClient.update();

  time_t epochTime = timeClient.getEpochTime();
  Serial.print("Epoch Time: ");
  Serial.println(epochTime);
  
  String formattedTime = timeClient.getFormattedTime();
  Serial.print("Formatted Time: ");
  Serial.println(formattedTime);  

  int currentHour = timeClient.getHours();
  Serial.print("Hour: ");
  Serial.println(currentHour);  

  int currentMinute = timeClient.getMinutes();
  Serial.print("Minutes: ");
  Serial.println(currentMinute); 
   
  int currentSecond = timeClient.getSeconds();
  Serial.print("Seconds: ");
  Serial.println(currentSecond);  

  String weekDay = weekDays[timeClient.getDay()];
  Serial.print("Week Day: ");
  Serial.println(weekDay);    

  //Get a time structure
  struct tm *ptm = gmtime ((time_t *)&epochTime); 

  int monthDay = ptm->tm_mday;
  Serial.print("Month day: ");
  Serial.println(monthDay);

  int currentMonth = ptm->tm_mon+1;
  Serial.print("Month: ");
  Serial.println(currentMonth);

  String currentMonthName = months[currentMonth-1];
  Serial.print("Month name: ");
  Serial.println(currentMonthName);

  int currentYear = ptm->tm_year+1900;
  Serial.print("Year: ");
  Serial.println(currentYear);

  //Print complete date:
  String currentDate = String(currentYear) + "-" + String(currentMonth) + "-" + String(monthDay);
  Serial.print("Current date: ");
  Serial.println(currentDate);

  Serial.println("");

  display->clearDisplay();
  display->setTextSize(1);
  display->setTextColor(SSD1306_WHITE);
  display->setCursor(0, 0);
  display->println(weekDay);  
  display->println(currentDate);  

  display->println("");
  display->print(currentHour);  
  display->print(":");
  display->print(currentMinute);  
  display->print(":");
  display->println(currentSecond);  
  display->print("Umidade: ");
  display->print(umidade);  
  display->println(" %");
  display->print("Temp: ");
  display->print(temperatura);  
  display->println(" .c");
  
  display->display();  

  delay(2000);
}