/*
  Arduino | coding-help
  Adjusting brightness with potentiometer and switching between
  RGB channels with one push button.

  Ghost Potato OP — 11/5/24 at 9:44 PM
  !THIS IS AN ASSIGNMENT! I am not looking for a direct answer, I just need a nudge in the right direction.
  My assignment: "Write a program that allows the user to set the brightness of each of the RGB channels
  by using the rotation dial to control brightness and a push button to select the channel. This
  should be done using functions to manage the various aspects of the program."

  Goal:
  Use serial monitor to log all brightness levels and read the channel and locked brightness.
  Starts with RGBRedPin on.
  Adjust brightness with potentiometer.
  Press a button to lock the brightness. (HOLD FOR 2S)
  Press a button to switch to the green channel. (QUICK PRESS)
  Adjust brightness of the green with potentiometer(does not change Red's locked brightness).
  Press a button to lock the brightness. (HOLD FOR 2S)
  Press a button to switch to blue channel. (QUICK PRESS)
  Adjust blue brightness with potentiometer(does not change Red/Green brightness).
  Press a button to lock the green brightness. (HOLD FOR 2s)
  Loop starts again.
  Add an exit to stop the loop?
*/

#include "button.h"

const char* RGB_NAME[3] = {"Red", "Green", "Blue"};
const int RGB_LED_PINS[3] = {11, 10, 9};
const int POT_PIN = A0;

int index = 0;

void setup() {
  Serial.begin(9600);
  for (int pin = 0; pin < 3; pin++) {
    pinMode(RGB_LED_PINS[pin], OUTPUT);
  }
  Serial.println("Short press changes RGB channel.");
  Serial.println("Long press sets channel value.\n");
  Serial.print("Current channel: ");
  Serial.println(RGB_NAME[index]);
}

void loop() {
  int potValue = analogRead(POT_PIN);
  int pwmValue = map(potValue, 0, 1023, 0, 255);
  switch (button.read())  {
    case ActionType::SHORT_PRESS:
      //Serial.println("Short press");
      index++;
      if (index >= 3) index = 0;
      Serial.print("Current channel: ");
      Serial.println(RGB_NAME[index]);
      break;
    case ActionType::LONG_PRESS:
      //Serial.println("Long press");
      Serial.print(RGB_NAME[index]);
      Serial.print(" channel PWM value: ");
      Serial.println(pwmValue);
      analogWrite(RGB_LED_PINS[index], pwmValue);
      break;
    default:
      // do nothing
      break;
  }
}