#include "TinyWireM.h"
#include <Tiny4kOLED.h>
String Proyecto = "Proy: ATtiny85-015";

void setup() {
  // put your setup code here, to run once:
  oled.begin(128, 64, sizeof(tiny4koled_init_128x64b), tiny4koled_init_128x64b);
  oled.setRotation(1);
  oled.clear();
  oled.on();
  oled.setFont(FONT6X8P);
  oled.setCursor(0, 0);
  oled.print(Proyecto);
  delay(1000);

  pinMode(4, INPUT);  // CI-3
  pinMode(1, INPUT);  // CI-6
  pinMode(3, OUTPUT); // CI-2
}

int hora = 0;
int minutes = 2;
int seconds = 0;
int fase = 0;
int chosen = 0;
//int times[] = {1, 2, 10, 15, 20, 25, 30, 40};
int times[] = {30, 60, 90, 120};
int ani = 14;
int ViewDisplay = 1;
int debounce4 = 0;
int debounce1 = 0;
int set=0;

void loop(){
  if (fase == 0 ) {
    if (digitalRead(4) == 0) {
      if (debounce4 == 0) {
        ViewDisplay = 1;
        debounce4 = 1;
        chosen++;
        if (chosen > 3) //7
          chosen = 0;
        if (fase == 3)
          fase = 0;
      }
    } else {
      debounce4 = 0;
    }

    if (digitalRead(1) == 0) {
      if (debounce1 == 0) {
        ViewDisplay = 1;
        debounce1 = 1;
        minutes = times[chosen];
        if(minutes==90){
          hora=1;
          minutes=30;
        }
        if(minutes==120){
          hora=2;
          minutes=0;
        }
        set=minutes;
        ver();
        fase = 1;
        if (fase == 3)
          fase = 0;
      }
    } else {
      debounce1 = 0;
    }
  }

  if (fase == 1 || fase == 2) {
    delay(10);
    seconds--;
    if (seconds <= 0) {
      seconds = 59;
      minutes--;
      if (hora >= 1 && minutes <= 0){
        hora--;
        minutes=59;
      }
    }
  }

  if (fase == 3) {      //Alarma
    digitalWrite(3, 1);
    delay(500);
    digitalWrite(3, 0);
    delay(500);
    if (digitalRead(4) == 0) {
      if (debounce4 == 0) {
        ViewDisplay = 1;
        debounce4 = 1;
        fase = 0;
        set=fase;
        ver();
        minutes = 2;
        chosen = 0;
        ViewDisplay = 1;
      }

    } else {
      debounce4 = 0;
    }

  }

  if (minutes == 0)
    fase = 1;
  if (minutes == -1)
    fase = 3;

  updateDisplay();
}

void updateDisplay() {
  if (ViewDisplay == 1) {
    oled.clear();
    ViewDisplay = 0;
  }

  if (fase == 0) {
    //oled.setFont(FONT6X8P);
    oled.setCursor(0, 0);
    oled.print(" SET TIME:");
    oled.setCursor(0, 1);
    oled.print("----------------------");
    oled.setCursor(0, 2);
    for (int i = 0; i < 4; i++) //8
    {
      oled.print(" ");
      oled.print(times[i]);
    }
    if (chosen == 1)
      oled.setCursor(25, 3 ); //32
    else if (chosen == 2)
      oled.setCursor(45, 3 ); //32
    else if (chosen == 3)
      oled.setCursor(60, 3); //50
    else if (chosen > 3)
      oled.setCursor(chosen * 17, 3);
    else
      oled.setCursor(6 + chosen * 12, 3);
    oled.print("^");
  }

  if (fase == 1) {
    //oled.setFont(FONT6X8P);
    //oled.setFont(FONT8X16P);
    oled.setCursor(8, 0);
    oled.print("TIME:");

    //oled.setFont(FONT8X16P);
    //oled.setFont(FONT16X32DIGITS);
    oled.setCursor(40, 3);
    if (hora < 10)
      oled.print(0);
      oled.print(hora);
      oled.print(" : ");
    if (minutes < 10)
      oled.print(0);
      oled.print(minutes);
      oled.print(" : ");
    if (seconds < 10)
      oled.print(0);
      oled.print(seconds);
  }

  if (fase == 2) {
    //oled.setFont(FONT8X16P);
    //oled.setFont(FONT16X32DIGITS);
    //    oled.setCursor(8, 0);
  //  oled.setCursor(50, 3);
  //  oled.print(seconds);
  }
}

void ver(){
    oled.setCursor(0, 6);
    oled.print(set);
    delay(2000);
}