var wordcut = require("wordcut");
var uncountedCharacter =
  "\u0e31\u0e34\u0e35\u0e36\u0e37\u0e38\u0e39\u0e47\u0e48\u0e49\u0e4a\u0e4b\u0e4c\u0e4d";
var specialCharSplit = "\u0000"; // null byte
wordcut.init();
var regEx = new RegExp("[" + uncountedCharacter + "]", "g");
export const lengthOfThaiString = function (str: string): number {
  return str.replace(regEx, "").length;
};

export var splitThaiStringByLength = function (
  str: string,
  maxLength: number
): string[] {
  if (!maxLength) {
    return [str];
  }
  let arrayOfString: string[] = str.split(/\r*\n/g);
  let result: string[] = arrayOfString.reduce((result, line) => {
    let wc = wordcut.cut(line, specialCharSplit).split(specialCharSplit);
    let temp = wc.shift();
    let previous: string = "";
    while (wc.length > 0) {
      if (temp.replace(regEx, "").length < maxLength) {
        previous = temp;
        temp = temp + wc.shift();
      } else {
        result.push(previous);
        temp = temp.replace(
          new RegExp(previous.replace(/\(/g, "\\(").replace(/\)/g, "\\)")),
          ""
        );
        previous = "";
      }
    }
    if (temp !== "") {
      result.push(temp);
    }
    return result;
  }, [] as string[]);
  return result;
};

// module.exports = {
//   lengthOfThaiString,
//   splitThaiStringByLength,
// };