export const QUOTE_MAP = {
  "'": "'",
  '"': '"',
  '`': '`',
};

export type QuoteMapKey = keyof typeof QUOTE_MAP;

export const shouldAutoCloseQuote = (before: string, after: string) => {
  // when directly before a closing bracket
  if (/^[}\])]/.test(after)) {
    return true;
  }

  // exclusion: when directly before a non-whitespace character
  if (/^[^\s]/.test(after)) {
    return false;
  }

  // exclusion: when directly after a letter or quote
  if (/[A-Za-z0-9]$/.test(before) || /[\'\"\`]$/.test(before)) {
    return false;
  }

  return true;
};

export const getAutoClosingQuoteInfo = (before: string, after: string) => {
  const left = (Object.keys(QUOTE_MAP) as Array<QuoteMapKey>).find((item) =>
    before.endsWith(item),
  );
  const right = left ? (QUOTE_MAP[left] as string) : undefined;
  const hasTrailingMatchingQuote = right ? after.startsWith(right) : false;
  return { left, right, hasTrailingMatchingQuote };
};