#include "U8glib.h"
#include <Servo.h>

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST); // Fast I2C / TWI

const uint8_t rook_bitmap[] U8G_PROGMEM = {
  // imagem aqui linha abaixo
// 'garrafa_1', 40x44px
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 
0xff, 0xc0, 0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x00, 0x03, 0xff, 
0xe0, 0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x00, 0x02, 0x00, 0x20, 
0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 
0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 
0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 
0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 
0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 
0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 
0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 
0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0xff, 0xa0, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x02, 
0x00, 0x60, 0x00, 0x00, 0x01, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

int slider = A0;
int bot1=2;
int bot2=3;
int led= 12;
int valorslider=0;
float percentagem=0;
Servo valvula;
int sp_valvula=90;
int p=0;
int a=0;

void menu1();     // Page-1
void menu2(); // Page-2
void menu3();    // Page-3
void pageInfo();        // Page-4
void menutest(); // menu de teste

void (*menus[])() = { menu1, menu2, menu3, menutest } ;
 int lastState = HIGH;
 int lastState1 = HIGH;
int sensor1 =4;
int sensor2 =5;
int i=0;

void setup() {
  
   pinMode(bot1, INPUT_PULLUP);  
   pinMode(bot2, INPUT_PULLUP);    
   pinMode(led, OUTPUT);
   pinMode(4, INPUT_PULLUP);
   pinMode(5, INPUT_PULLUP);
  // servo_motor ->>> abertura da valvula
   valvula.attach(6);
// escolha fonte do OLED
  u8g.setFont(u8g_font_tpssb);
  u8g.setColorIndex(1);
}


void menu1() {  // p=0
  // indicador enchimento cliente 1

     if (digitalRead(bot1)==LOW) {
      sp_valvula=45;
    valvula.write(sp_valvula); }

    valorslider=analogRead(slider);
    valorslider=map(valorslider,0,1023, 0, 100);
    percentagem=valorslider;
    u8g.drawFrame(0, 10, 128, 20);
    u8g.drawBox(10, 15, valorslider, 10);
    u8g.setPrintPos(30, 55);
    u8g.print(valorslider);
    u8g.drawStr(12, 40, "Valor enchimento");
    u8g.drawStr(40, 55, "% - Cliente 1");
   
        return 0; 
}
void menu2() {  // p=1

   u8g.drawStr( 40, 10, "MENU 2");
   u8g.drawBitmapP( 40, 12, 5, 44, rook_bitmap);   // 5 = 40/8 bytes

  return 0; 
}
void menu3() {    // p=2

   u8g.drawStr( 0, 15, "MENU 3");
   u8g.setPrintPos(45, 50); 
  u8g.print(a);
  
  return 0; 
}
void menutest () {//p=3
 
 u8g.drawStr( 40, 15, "BEM VINDO");
 u8g.drawStr( 40, 30, "cliente 1");
 
    delay(100);
    i=i+1;
    if (i>=20) {
       a=1;
            }
            return a;
}
/*
  do {
          // indicador enchimento
       valorslider=analogRead(slider);
       valorslider=map(valorslider,0,1023, 0, 100);
    percentagem=valorslider;

    u8g.drawStr(12, 40, "Valor enchimento");
    u8g.drawStr(65, 55, "%");
    u8g.drawFrame(0, 10, 128, 20);
    u8g.drawBox(10, 15, valorslider, 10);
    u8g.setPrintPos(40, 55);
    u8g.print(valorslider);
*/
void loop() {
int value_b1 = digitalRead(bot2);  // menu seguinte VERMELHO
int value_b2 = digitalRead(bot1);  // menu anterior VERDE

  if (lastState != value_b1 && p<2) {
    lastState = value_b1;
  if (value_b1 == HIGH) {
  p=p+1; }
}
if (lastState != value_b1 && p>=2) {
    lastState = value_b1; 
if (value_b1 == HIGH)  {
  p=0; }
} 
if (lastState1 != value_b2 && p>0) {
    lastState1 = value_b2;
  if (value_b2 == HIGH) {
  p=p-1; }
}
if (lastState1 != value_b2 && p==0) {
    lastState1 = value_b2;
  if (value_b2 == HIGH) {
  p=2; }
}
if (digitalRead(sensor1)==HIGH && digitalRead(sensor2)==HIGH && a==0) {
    p=3; }
    else if (digitalRead(sensor1)==LOW || digitalRead(sensor2)==LOW && a==2 ) {
      a=0;
         }

if (a == 1) {
    p=2;
    a=2;
    i=0; }

  // COISAS A APARECER NO ECRA
   u8g.firstPage();
  do {  
    (*menus[p])();
  } while( u8g.nextPage() );
}
//acender LED
  /* if (digitalRead(bot1)==LOW || digitalRead(bot2)==LOW) {
 digitalWrite(led, HIGH);
 }
  else { digitalWrite(led, LOW); 
  } */