/*
What is it?
-----------
Controller for Youtube video playback: Pause/Play (k), Backward (j)/Forward (l), Volume Up (up)/Down (down).

The Latest Version
------------------
Versioning is not applicable for this repo.

Documentation
-------------
You can read in header of files and, maybe, README for each folder will be created.

Requirements
------------
Gyver EncButton library https://github.com/GyverLibs/EncButton

Installation
------------
Arduino IDE => Tools => Board => "Arduino Leonardo"

Licensing
---------
Please see the file called LICENSE.

Contacts
--------
If you have a concrete bug report please contact me via email.

Connections
----------
Arduino Leonardo or same
   S1 - D3
   S2 - D2
   Key - D4

Miscellaneous
----------

Keyboard shortcut 	Function
Spacebar 	          Play/Pause when the seek bar is selected. Activate a button if a button has focus.
k 	                Pause/Play in player.
m 	                Mute/unmute the video.
Left/Right          Seek backward/forward 5 seconds.
j 	                Seek backward 10 seconds in player.
l 	                Seek forward 10 seconds in player.
. 	                While the video is paused, skip to the next frame.
, 	                While the video is paused, go back to the previous frame.
> 	                Speed up the video playback rate.
< 	                Slow down the video playback rate.
Up/Down             Increase/Decrease volume 5%.
Numbers 1 to 9 	    Seek to the 10% to 90% of the video.
Number 0 	          Seek to the beginning of the video.
/ 	                Go to search box.
f 	                Activate full screen. 
c 	                Activate closed captions and subtitles if available.
Shift+N 	          Move to the next video
Shift+P 	          Move to the previous video.
i 	                Open the Miniplayer.

Controller for Youtube video playback: 
Pause/Play (k), 
Backward (j)/Forward (l), 
Volume Up (up)/Down (down).
*/

#include <Arduino.h>
#include <Keyboard.h>
#include <EncButton.h>

const int ENCA = 2;
const int ENCB = 3;
const int BTN = 4;

EncButton enc(ENCA, ENCB, BTN);

volatile int value = 0;
volatile int step = 3;  //1 шаг за каждые step сигналов энкодера, чтобы снизить чувствительность (так удобнее)

void setup() {
  Serial.begin(115200);

  enc.setEncType(EB_STEP4_LOW);

  // показаны значения по умолчанию
  enc.setBtnLevel(LOW);
  enc.setClickTimeout(500);
  enc.setDebTimeout(50);
  enc.setHoldTimeout(600);
  enc.setStepTimeout(200);
  enc.setEncReverse(0);
  enc.setFastTimeout(30);
}

void loop() {
  enc.tick();  // опрос происходит здесь

  if (enc.right())
  {
    value = value + step; //поворот вправо
  }
  if (enc.left())
  {
    value = value - step; //поворот влево
  }

  if (enc.leftH()) {
    Keyboard.press(KEY_UP_ARROW);
    delay(10);
    Keyboard.releaseAll();

  }
  if (enc.rightH()) {
    Keyboard.press(KEY_DOWN_ARROW);
    delay(10);
    Keyboard.releaseAll();
  }

  if (enc.click()) {
    Keyboard.press('K');
    delay(10);
    Keyboard.releaseAll();
  }

  if (value > 9) {
    Keyboard.press('J'); // каждые value поворотов вправо нажимаем J
    delay(10);
    Keyboard.releaseAll();
    value = 0;
  }
  if (value < -9) {
    Keyboard.press('L'); // каждые value поворотов влево нажимаем 
    delay(10);
    Keyboard.releaseAll();
    value = 0;
  }
}