import * as fs from "fs";
import * as util from "util";

const readFile = util.promisify(fs.readFile);

export const formatArrayScss = async (fileLink = null, prefixSrc = null) => {
  if (prefixSrc === null || fileLink === null) {
    return console.log(
      "Please add file and prefixSrc in formatArrayScss function"
    );
  }
  const contentFile = await readFile(fileLink);
  const subst = `$1`;
  const regex = /@import(\".*\")\;/gm;

  const result = contentFile
    .toString()
    .replace(/\/\*[\s\S]*?\*\/|([^\\:]|^)\/\/.*$/gm, "$1")
    .replace(/\s/gm, "")
    .replace(/\n/gm, "")
    .replace(/\r/gm, "")
    .replace(/\'/gm, '"')
    .replace(/\;/gm, ";\n");

  const resultAfter = result.replace(regex, subst);
  const returnArray = resultAfter
    .replace(/\"/gm, "")
    .split("\n")
    .filter(value => Object.keys(value).length !== 0)
    .map(data => {
      if (prefixSrc.endsWith("/")) {
        return `${prefixSrc}${data}`;
      } else {
        return `${prefixSrc}/${data}`;
      }
    });

  return returnArray;
};