#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSansBold9pt7b.h>
#include <Fonts/Picopixel.h>

#define ENCODER_CLK 2
#define ENCODER_DT  3
#define ENCODER_SW  4

uint8_t volume = 0;
uint8_t bass = 25;
uint8_t treble = 66;
uint8_t reglage = 10;


typedef enum {
  SET_VOLUME,
  SET_BASS,
  SET_TREBLE,
  SET_REGLAGE,
} Mode;

Mode mode = SET_VOLUME;

Adafruit_SSD1306 display(128, 64, &Wire, -1);
//************************************************************************************
int menuitem = 1;
int frame = 1;
int page = 1;
int lastMenuItem = 1;



String menuItem1 = "Select Out";
String menuItem2 = "I/O Name";
String menuItem3 = "Reset Mode";
String menuItem4 = "Setup";
String menuItem5 = "Exit";
String menuItem6 = "Dispo";

String menuPrin[5] = { "Select Out", "Name", "Reset Mode", "Setup", "Exit" };
int selectedPrin = 0;

String menuOut[2] = { "Out A", "Out B" };
int selectedOut = 0;
String menuIn[4] = { "In 1", "In 2", "In 3", "In 4" };
int selectedIn = 0;
/*
String menuName[6] = { "HP Hifi", "HP Studio", "PC AAAA", "PC BBBB", "Hifi", "Rack" };
int selectedName = 0;

String menuReset[2] = { "A/B", "All" };
int selectedReset = 0;
*/
boolean backlight = true;
boolean up = false;
boolean down = false;
boolean middle = false;


//**************************************************************************
void setup() {
  Serial.begin(9600);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  pinMode(ENCODER_SW, INPUT_PULLUP);
  updateDisplay();
}
//******************************ss prog desc menu***************************************
void nextMode() {
  switch (mode) {
    case SET_VOLUME:
      mode = SET_BASS;
      break;

    case SET_BASS:
      mode = SET_TREBLE;
      break;

    case SET_TREBLE:
      mode = SET_REGLAGE;
      break;

    case SET_REGLAGE:
      mode = SET_VOLUME;
      break;      
  }
}
//***********************************ss prog mont menu*************************************
void precMode() {
  switch (mode) {
    case SET_VOLUME:
      mode = SET_REGLAGE;
      break;

    case SET_BASS:
      mode = SET_VOLUME;
      break;

    case SET_TREBLE:
      mode = SET_BASS;
      break;

    case SET_REGLAGE:
      mode = SET_TREBLE;
      break;      
  }
}
//************************************ss prog modif valeur*************************************

void updateValue(int delta) { 
  switch (mode) {   
    case SET_VOLUME:
      volume = constrain(volume + delta, 0, 100);
      break;

    case SET_BASS:
      bass = constrain(bass + delta, 0, 100);
      break;

    case SET_TREBLE:
      treble = constrain(treble + delta, 0, 100);
      break;

    case SET_REGLAGE:
      reglage = constrain(reglage + delta, 0, 100);
      break;      
  }
}



void updateDisplay() {


    display.setTextSize(2);
    display.clearDisplay();
    display.setTextColor(WHITE,BLACK );
    display.setCursor(14, 0);//(x, y) max 10 caract MAJ/min (2), max 20 min (1)
    display.println("Main Menu");//
    display.setTextSize(1);    
    display.drawFastHLine(0,15,128,WHITE);//BLACK
 
 
 
  display.setFont();
  display.setTextColor(1);

  display.setCursor(32, 22);
  display.print("Select Out");
 // display.drawRoundRect(10, 12, 102, 9, 2, WHITE); //dessin rect
 // display.fillRect(11, 13, volume, 7, WHITE);      //remplissage rect
  if (mode == SET_VOLUME) {
    display.setCursor(22, 22);
    display.print(">");
  }

  display.setCursor(32, 32);
  display.print("I/O Name");
 // display.drawRoundRect(10, 32, 102, 9, 2, WHITE);
  //display.fillRect(11, 33, bass, 7, WHITE); 
  if (mode == SET_BASS) {
    display.setCursor(22, 32);
    display.print(">");
  }

  display.setCursor(32, 42);
  display.print("Reset Mode");
  //display.drawRoundRect(10, 52, 102, 9, 2, WHITE);
//  display.fillRect(11, 53, treble, 7, WHITE);
  if (mode == SET_TREBLE) {
    display.setCursor(22, 42);
    display.print(">");
  }

  display.setCursor(32, 52);
  display.print("Setup");
  //display.drawRoundRect(10, 52, 102, 9, 2, WHITE);
//  display.fillRect(11, 53, treble, 7, WHITE);
  if (mode == SET_REGLAGE) {
    display.setCursor(22, 52);
    display.print(">");
  }

  display.display();
}


//*************************SS prog encoder*******************************************
long int modeLastChanged = 0;
int prevClk = HIGH;
void loop() {
  if (digitalRead(ENCODER_SW) == LOW && millis() - modeLastChanged > 300) {
    modeLastChanged = millis();
    //nextMode();
    updateDisplay();
    //Serial.print(F("millis = "));
   // Serial.println(millis());
  }
  int clk = digitalRead(ENCODER_CLK);
  if (clk != prevClk && clk == LOW) {
    int dt = digitalRead(ENCODER_DT);
   // int delta = dt == HIGH ? 5 : -5;
 if (dt == 1){
    nextMode();
   }
  else {
    precMode();
  }
     updateDisplay();
  }
    prevClk = clk;
}