#include <LiquidCrystal_I2C.h>
#include <SPI.h>
#include <SD.h>
#include <DHT.h>
#include <Wire.h>
//Pressure Sensor
#include <Adafruit_BMP085.h>
#include <WiFi101.h>
#include "arduino_secrets.h"
//modified library
#include <NTPClient.h>
#include <WiFiUdp.h>

#define DHTPIN 8
#define DHTTYPE DHT22
#define SHUMSENSOR A0

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x3F, 20, 4);
Adafruit_BMP085 bmp;
WiFiClient Client;

const int chipSelect = 4;
int status = WL_IDLE_STATUS;

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

void setup() {
  bmp.begin();
  dht.begin();
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  analogReadResolution(12);
  while(status != WL_CONNECTED) {
    Serial.print("Verbinde zu SSID: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid, pass);
    delay(10000);
  }
  Serial.println("Verbunden!");

  timeClient.begin();
  // Set offset time in seconds to adjust for your timezone, for example:
  // GMT +1 = 3600
  // GMT +8 = 28800
  // GMT -1 = -3600
  // GMT 0 = 0
  timeClient.setTimeOffset(7200);

  while (!Serial);
    Serial.print("Initializing SD card...");
  if (!SD.begin(chipSelect)) {
    Serial.println("initialization failed. Things to check:");
    Serial.println("1. is a card inserted?");
    Serial.println("2. is your wiring correct?");
    Serial.println("3. did you change the chipSelect pin to match your shield or module?");
    Serial.println("Note: press reset or reopen this serial monitor after fixing your issue!");
    while (true);
  }
  Serial.println("initialization done.");
}

void loop() {
  delay(2000);
  //functions for LCD
  readTempHum();
  readPress();
  readSHum();
  writeSD();

  while(!timeClient.update()) {
    timeClient.forceUpdate();
  }

  Serial.print(timeClient.getFormattedDate());
  Serial.print(", ");
  Serial.print(timeClient.getFormattedTime());
  Serial.print(", ");
  Serial.print(dht.readTemperature(), 1);
  Serial.print(" °C, ");
  Serial.print(dht.readHumidity(), 1);
  Serial.print(" hPa, ");
  Serial.println(analogRead(SHUMSENSOR));
}

void readTempHum() {
  lcd.setCursor(0, 0);
  lcd.print("Temperatur: ");
  lcd.setCursor(0, 1);
  lcd.print("Luftfeuchte: ");
  lcd.setCursor(13, 0);
  lcd.print(dht.readTemperature(), 1);
  lcd.setCursor(18, 0);
  lcd.write(0xDF);
  lcd.print("C");
  lcd.setCursor(13, 1);
  lcd.print(dht.readHumidity(), 1);
  lcd.setCursor(17, 1);
  lcd.print("%");
}

void readPress() {
  lcd.setCursor(0, 2);
  lcd.print("Luftdruck: ");
  lcd.setCursor(13, 2);
  lcd.print(bmp.readPressure() / 100);
  lcd.print(" hPa");
}

void readSHum() {
  lcd.setCursor(0, 3);
  lcd.print("Bodenfeuchte: ");
  lcd.setCursor(14, 3);
  int bodenFeuchte = analogRead(SHUMSENSOR);
  lcd.print(bodenFeuchte);
}

void writeSD() {
  File dataFile = SD.open("datalog.txt", FILE_WRITE);
  // if the file is available, write to it:
  if (dataFile) {
    dataFile.print(timeClient.getFormattedDate());
    dataFile.print(", ");
    dataFile.print(timeClient.getFormattedTime());
    dataFile.print(", ");
    dataFile.print(dht.readTemperature(), 1);
    dataFile.print(" °C, ");
    dataFile.print(dht.readHumidity(), 1);
    dataFile.print(" hPa, ");
    dataFile.println(analogRead(SHUMSENSOR));
    dataFile.close();
  }
    // if the file isn't open, pop up an error:
  else {
    Serial.println("error opening datalog.txt");
  }
}