/**
 * Copyright (c) 2024 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "textbox.h"
#include "assert/assert.h"
#include "input.h"
#include "game/time.h"
#include "locale/language.h"

textbox_t TEXTBOX;

void textboxInit() {
  memset(&TEXTBOX, 0, sizeof(textbox_t));
}

void textboxSetText(
  const char_t *title,
  const char_t *text
) {
  size_t len;
  const char_t *temp;
  assertNotNull(text, "Text cannot be NULL.");

  // Copy translation
  temp = languageGetPointer(text);
  len = strlen(temp);
  assertTrue(len < TEXTBOX_TEXT_MAX, "Text is too long.");
  strcpy(TEXTBOX.text, temp);
  TEXTBOX.textLength = len;

  // Setup title
  if(title) {
    temp = languageGetPointer(title);
    len = strlen(temp);
    assertTrue(len < TEXTBOX_TITLE_MAX, "Title is too long.");
    strcpy(TEXTBOX.title, temp);
  } else {
    TEXTBOX.title[0] = '\0';
  }

  // Prepare for scrolling
  TEXTBOX.nextChar = (1.0f / TEXTBOX_CHARS_PER_SECOND);
  TEXTBOX.textIndex = 0;
  TEXTBOX.open = true;
}

bool_t textboxIsOpen() {
  return TEXTBOX.open;
}

void textboxUpdate() {
  if(!textboxIsOpen()) return;

  // Have we finished scrolling?
  if(TEXTBOX.textIndex >= TEXTBOX.textLength) {
    // Wait for input
    if(!inputWasPressed(INPUT_BIND_ACCEPT)) return;
    TEXTBOX.open = false;
    return;
  }

  // Update scrolling
  TEXTBOX.nextChar -= TIME.delta;
  if(TEXTBOX.nextChar > 0.0f) return;
  
  switch(TEXTBOX.text[TEXTBOX.textIndex]) {
    // Exaggerate the pause for these characters
    case '\n':
    case '.':
    case ',':
    case ';':
    case ':':
      TEXTBOX.nextChar = TEXTBOX_CHARS_PAUSE_DELAY;
      break;

    default:
      TEXTBOX.nextChar = (1.0f / TEXTBOX_CHARS_PER_SECOND);
      break;
  }
  TEXTBOX.textIndex++;
}