#include <math.h> 
#include <SPI.h>
#include "LedMatrix.h"
#include <DS3231.h>
#include <EEPROM.h>

//RealTimeClock
RTClib RTC;
DS3231 Clock;

//Display
#define NUMBER_OF_DEVICES 4
#define CS_PIN 10
LedMatrix ledMatrix = LedMatrix(NUMBER_OF_DEVICES, CS_PIN);

//ConfigData (Name and Pin-Numbers)
const String NodeName = "Wecker";
//Pin Taster
const int pinTime = 2; //Pin fuer Toggle_Power und Einstellen der Uhrzeit (Lang)
const int pinSet = 3; //Pin fuer Sleep und Zeit_Einstellung im Alarm/Time Set Mode
const int pinAlarm = 4; //Pin fuer Alarm An/Aus und setzen der Alarmzeiten (Lang)
const int pinInput = 5; //Pin für die Eingangswahl
const int pinSleep = 6; //Pin Unbenutzt
//Pin Relay
const int outInput = 7;
const int outPower = 8;

//For Summertime change notification (change alarmtime) this should be saved in the EEPROM!
bool summer = false;

//Alarm
int al1h = 0;
int al1m = 0;

int al2h = 0;
int al2m = 0;

unsigned long time_on = -1;
int minutes_sleep = -1;

//Current Date and Time from RTC
int h = 0;
int m = 0;
int s = 0;
int d = 0;
int M = 0;
int y = 0;
char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
String dow = "-";

int setItem = 0;

long block_gui = -1;

unsigned long previousMillis = 0;

void setup() {
  Serial.begin(115200);
  delay(10);
  
  Wire.begin();
  //Setup Display
  ledMatrix.init();
  ledMatrix.setTextAlignment(0);
  ledMatrix.setRotation(true);
  ledMatrix.setIntensity(0);
  
  display_text("U");
  delay(400);
  display_text("Uh");
  delay(400);
  display_text("Uhr");
  delay(400);
  display_text("Uhr");

  delay(500);

  //restore data
  get_eeprom();
  
  //Pin Setup 
  pinMode(pinTime, INPUT_PULLUP);           // set pin to input
  digitalWrite(pinTime, HIGH);       // turn on pullup resistors

  pinMode(pinSet, INPUT_PULLUP);           // set pin to input
  digitalWrite(pinSet, HIGH);       // turn on pullup resistors

  pinMode(pinAlarm, INPUT_PULLUP);           // set pin to input
  digitalWrite(pinAlarm, HIGH);       // turn on pullup resistors

  pinMode(pinInput, INPUT_PULLUP);           // set pin to input
  digitalWrite(pinInput, HIGH);       // turn on pullup resistors

  pinMode(pinSleep, INPUT_PULLUP);           // set pin to input
  digitalWrite(pinSleep, HIGH);       // turn on pullup resistors

  pinMode(outPower, OUTPUT);           // set pin to input
  digitalWrite(outPower, HIGH);       // turn on pullup resistors
   
  pinMode(outInput, OUTPUT);           // set pin to input
  digitalWrite(outInput, HIGH);       // turn on pullup resistors

  delay(500);

  //Set Alarm Times
  DateTime now = RTC.now();
  d = now.day();
  M = now.month();
  y = now.year();
  h = now.hour(); //24-hr 
    
  byte A1Day, A1Hour, A1Minute, A1Second, AlarmBits;
  bool A1Dy, A1h12, A1PM;
  Clock.getA1Time(A1Day, A1Hour, A1Minute, A1Second, AlarmBits, A1Dy, A1h12, A1PM);
  if (summer)
  {
    al1h = A1Hour + 1;
  }
  else{
    al1h = A1Hour;
  }
  al1m = A1Minute;
  Serial.println("Alarm1 Set:" + String(A1Day) + ", " + String(A1Hour) + ", " + String(A1Minute) + ", " + String(AlarmBits) + ", " + String(A1Dy) + ", " + String(A1h12) + ", "); 

  Clock.getA2Time(A1Day, A1Hour, A1Minute,  AlarmBits, A1Dy, A1h12, A1PM);
  if (summer)
  {
    al2h = A1Hour + 1;
  }
  else{
    al2h = A1Hour;
  }
  al2m = A1Minute;
  Serial.println("Alarm2 Set:" + String(A1Day) + ", " + String(A1Hour) + ", " + String(A1Minute) + ", " + String(AlarmBits) + ", " + String(A1Dy) + ", " + String(A1h12) + ", "); 
  
  
  delay(1000);


  previousMillis = millis();

}


void loop() {
  unsigned long currentMillis = millis();
  unsigned long intervall = currentMillis - previousMillis;
  release_gui(currentMillis);
  
  // put your main code here, to run repeatedly:
  if(setItem == 0){
      update_Time();
      run_alarm();
      if (block_gui < 0)
        show_current_time(intervall,currentMillis);
   }
   else{
      show_time_infos(intervall,currentMillis);
      previousMillis = currentMillis;
   }
  test_pin();
  handleSleep(intervall, currentMillis);
  delay(80);
}