// ########## DMX Sheet ##########

// ##########  Mode 1   ##########
// 6 dmx channel
// ch1 - Dimmer
// ch2 - Red
// ch3 - Green
// ch4 - Blue
// ch5 - Pan
// ch6 - Panless Rot (0, 255 Stop, 1 - 127 Rotate clockwise (slow to fast), 128 - 254 Rotate anti-clockwise (slow to fast))


#include <elapsedMillis.h>
#include <LiquidCrystal_I2C.h>
#include <FastLED.h>

//Timer setup
elapsedMillis timerDef;
elapsedMillis menuExit;
elapsedMillis screenOut;

//Add LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

//LED config
#define NUM_LED  6
#define LED_PIN   2
CRGB leds[NUM_LED];

//Navigation button varibles
int menuBtn = 0;
int upBtn = 0;
int downBtn = 0;
int enterBtn = 0;

//Operation varibles
int dmxAddres = 1;
bool dmxStatus = false;
bool dmxEnable = true;
int menuPos = 1;
int dmxMode = 1;
int screenTime = 0;
bool btnAccess = true;
bool reset = false;



void setup() {
  //Initalise the LCD
  lcd.init();
  lcd.backlight();
  lcd.print("    STARTING");

  //Setup LED
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LED);
  FastLED.setBrightness(255);

  //Setup navigation buttons
  pinMode(A0, INPUT_PULLUP);
  pinMode(A1, INPUT_PULLUP); 
  pinMode(A2, INPUT_PULLUP); 
  pinMode(A3, INPUT_PULLUP); 
}



void loop() {
  //Reser fixture to home pos

  //Select mode after reset
  switch(dmxMode) {
    case 1:
      mode1();
    break;
    case 2:
      mode2();
    break;
    case 3:
      mode3();
    break;
  }
}



void menu() {
  while(true) {
    if(timerDef > 50) {
      menuBtn = analogRead(A0);
      upBtn = analogRead(A1);
      downBtn = analogRead(A2);
      enterBtn = analogRead(A3);

      //Disabled action if button on hold
      if(menuBtn > 200 && upBtn > 200 && downBtn > 200 && enterBtn > 200) { btnAccess = true; }

      //Menu scroll up
      if(upBtn < 200 && btnAccess == true) {
        btnAccess = false;
        if(menuPos == 1) {
          menuPos = 4;
          menuDraw();
          break;
        } else {
          menuPos = menuPos - 1;
          menuDraw();
          break;
        }
      } 
      
      //Menu scroll down
      if(downBtn < 200 && btnAccess == true) {
        btnAccess = false;
        if(menuPos == 4) {
          menuPos = 1;
          menuDraw();
          break;
        } else {
          menuPos = menuPos + 1;
          menuDraw();
          break;
        }
      }
      
      //Enter selected menu
      if(enterBtn < 200 && btnAccess == true) {
        
      }

      //Exit from menu
      if(menuBtn < 200 && btnAccess == true) {
        menuPos = 1;
        switch(dmxMode) {
          case 1:
            btnAccess = false;
            mode1();
          break;
          case 2:
            btnAccess = false;
            mode2();
          break;
          case 3:
            btnAccess = false;
            mode3();
          break;
        }
      }

      timerDef = 0;
    }
  }
}

void menuDraw() {
  switch(menuPos) {
    case 1: //DMX addres
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("DMX Address");
      lcd.setCursor(0,1);
      if(dmxAddres < 10) {
        lcd.print("00" + String(dmxAddres));
      } else if (dmxAddres < 100) {
        lcd.print("0" + String(dmxAddres));
      }
      menu();
    break;
    case 2: //DMX mode
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Mode");
      lcd.setCursor(0,1);
      lcd.print(String(dmxMode));
      menu();
    break;
    case 3: //Display timeout
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Screen Time");
      lcd.setCursor(0,1);
      lcd.print(String(screenTime));
      menu();
    break;
    case 4: //Manual control
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Manual Mode");
      menu();
    break;
  }
}



void manualControl() {

}



void mode1() {
    lcd.clear();
    lcd.setCursor(7,0);
    if(dmxAddres < 10) {
      lcd.print("00" + String(dmxAddres));
    } else if (dmxAddres < 100) {
      lcd.print("0" + String(dmxAddres));
    }
    lcd.setCursor(7,1);
    lcd.print("M:1");
  
  while(true) {
    if(timerDef > 50) {
      menuBtn = analogRead(A0);
      upBtn = analogRead(A1);
      downBtn = analogRead(A2);
      enterBtn = analogRead(A3);

      //Disabled action if button on hold
      if(menuBtn > 200 && upBtn > 200 && downBtn > 200 && enterBtn > 200) { btnAccess = true; }
      //Enter menu
      if(menuBtn < 200 && btnAccess == true) { btnAccess = false; menuDraw(); break;}

      timerDef = 0;
    }
  }
}



void mode2() {

}



void mode3() {

}