#include "ttbutton.h"

// Start by creating button objects
// Note that each button is given an internal index in the button group as it is created
TTButton left_button   = TTButton(5);  // Button connected to pin 5, given group index 0
TTButton middle_button = TTButton(6);  // Button connected to pin 6, given group index 1
TTButton right_button  = TTButton(7);  // Button connected to pin 7, given group index 2

// Create a button group to which we can later assign the buttons
TTButtonGroup button_group = TTButtonGroup();

// Create the functions you want to assign to the group
void left(int press_time) {
  Serial.println("Left button press");
}

void right(int press_time) {
  Serial.println("Right button long press");
}

void all(int press_time) {
  Serial.println("All buttons pressed, middle released");
}

void setup() {
  Serial.begin(9600);
  
  // Add the buttons to the button group
  // The ButtonGroup takes pointers to the Button objects. If you haven't used pointers before, 
  // don't worry about it, just don't forget to put a "&" in front of each button name when assigning it. 
  button_group.addButton(&left_button);
  button_group.addButton(&middle_button);
  button_group.addButton(&right_button);
    
  // Using the button group indicies above, choose sets of buttons from the group to which you want to assign functions 
  const int left_button_set[]  = {0};        // Left button pressed
  const int right_button_set[] = {2};        // Right button pressed
  const int all_button_set[]   = {0, 1, 2};  // All buttons pressed

  // Assign functions to button group
  /*
      addFunction(
          start_button_count -- How many buttons are pressed to start to timer
          start_buttons -- Which buttons are pressed
          stop_button -- Which button, when released, stops the timer. 
              -1 if function should execute when any button is realesed.
          min_press_time -- Buttons must be pressed at least this many milliseconds...
          max_press_time -- ...but less than this many milliseconds to activate the assigned callback
      )

      MAX_PRESS_TIME is defined as the maximum value of an unsigned int.
  */
  
  // Calls left() after any length press of left button
  button_group.addFunction(1, left_button_set, -1, 0, MAX_PRESS_TIME, myFunc_0);
  
  // Calls right() when right button is released after being held at least 3 seconds
  button_group.addFunction(1, right_button_set, -1, 3000, MAX_PRESS_TIME, myFunc_1);
  
  // Calls all() after all buttons are held for at least 1 second and the middle button is released
  button_group.addFunction(3, all_button_set, 1, 0, MAX_PRESS_TIME, all);
}

void loop() {
  // Constantly poll buttons. Debouncing is handled under the hood. 
  // When a transition occurs that matches one to which a function has been assigned, that function is called
  button_group.update();
}