#include "../raylib.h"
#include "input.h"
#include <stdio.h>

#define ENTER 257
#define BACKSPACE 259

void handleKeyPress(Input*, int);

void handle_pressed_keys(Input *input) {
  int c;
  while(c = GetKeyPressed()) {
    handleKeyPress(input, c);
  }
}

void handleKeyPress(Input *input, int c) {
  if (c == BACKSPACE) {
    pop_character(input);
  } else if (c == ENTER) {
    clear_input_buffer(input);
  } else if ((c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) {
    push_character(input, c);
  }
}

void push_character(Input *input, int c) {
  if (input->input_length < INPUT_BUFFER_MAX_LENGTH) {
    input->input_buffer[input->input_length++] = c;
    input->input_buffer[input->input_length] = 0;
  }
}

void pop_character(Input *input) {
  if (input->input_length > 0) {
    input->input_buffer[input->input_length - 1] = 0;
    input->input_length--;
  }
}

void clear_input_buffer(Input *input) {
  input->input_buffer[0] = 0;
  input->input_length = 0; 
}