#include <DHT.h>
#include <DHT_U.h>

#include <SPI.h>
#include <SD.h>

#include <Adafruit_Sensor.h>
#include <Adafruit_TSL2561_U.h>

#define DHTPIN 7
#define DHTTYPE DHT11

File logFile;

int saveState = 1;

float sensorValue_DHT_h;
float sensorValue_DHT_t;
float sensorValue_TSL_l;

DHT dht(DHTPIN, DHTTYPE);
Adafruit_TSL2561_Unified tsl = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 12345);

void sensorConfig_TSL(void) {
  tsl.enableAutoRange(true);
  tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_13MS);
}

void setup() {

  Serial.begin(9600);

  Serial.println("NWT Projekt: Wetterstation - Lukas.K");

  sensorConfig_TSL();
  dht.begin();

  if (!SD.begin(4)) {
    Serial.println("Fehler bei der initialiesierung der SD Karte.");
    while (1);
  }

  logFile = SD.open("values.txt", FILE_WRITE);

  logFile.println("Wetterstation - Saved Values");
  logFile.close();
}

void loop() {

  logFile = SD.open("values.txt", FILE_WRITE);
  delay(250);

  // - TSL Wert -
  sensors_event_t event;
  tsl.getEvent(&event);

  if (!event.light) {
    Serial.println("Sensor error: TSL2561");
  } else {
    sensorValue_TSL_l = event.light;
  }

  // - DHT Werte -
  sensorValue_DHT_h = dht.readHumidity();
  sensorValue_DHT_t = dht.readTemperature();

  if (isnan(sensorValue_DHT_h) || isnan(sensorValue_DHT_t)) {
    Serial.println("Sensor error: DHT11");
    return;
  }

  Serial.println("Sensor Werte ausgelesen.");

  Serial.print("Light: ");
  Serial.print(sensorValue_TSL_l);
  Serial.println(" lux");

  Serial.print("Luftfeuchtigkeit: ");
  Serial.print(sensorValue_DHT_h);
  Serial.println(" %");

  Serial.print("Temperatur: ");
  Serial.print(sensorValue_DHT_t);
  Serial.println(" °C");

  // - SD Speichern -

  if (logFile) {

    logFile.println("TEST");

    logFile.print("[");
    logFile.print(saveState);
    logFile.print("] ");

    logFile.print("Light: ");
    logFile.print(sensorValue_TSL_l);
    logFile.print(" lux  ");

    logFile.print("Luftfeuchtigkeit: ");
    logFile.print(sensorValue_DHT_h);
    logFile.print(" %  ");

    logFile.print("Temperatur: ");
    logFile.print(sensorValue_DHT_t);
    logFile.println(" °C");

    Serial.println("Auf SD gespeichert.");
  } else {
    Serial.println("Fehler beim speichern.");
  }

  logFile.close();

  saveState = saveState + 1;

}