// https://github.com/dawaltconley/sass-cast/blob/main/utils.js

import * as sass from "sass-embedded";

/**
 * Check if string is quoted
 * @private
 * @param {string} str
 * @return {boolean}
 */
export const isQuoted = (str) => /^['"].*['"]$/.test(str);

/**
 * Surrounds a string with quotes
 * @private
 * @param {string} str
 * @param {string} q - quotes, double or single
 * @return {string}
 */
export const quoteString = (str, q) => {
  if (!q) return str;
  if (isQuoted(str)) {
    q = str[0];
    str = str.slice(1, -1);
  }
  let r = new RegExp(q, "g");
  return q + str.replace(r, "\\" + q) + q;
};

/**
 * Unquotes a string
 * @private
 * @param {string} str
 * @return {string}
 */
export const unquoteString = (str) => (isQuoted(str) ? str.slice(1, -1) : str);

/**
 * Parse a string as a Sass object
 * cribbed from davidkpiano/sassport
 *
 * @private
 * @param {string} str
 * @return {Value}
 */
export const parseString = (str) => {
  let result;

  try {
    sass.compileString(`$_: ___(${str});`, {
      functions: {
        "___($value)": (args) => {
          result = args[0];
          return result;
        },
      },
    });
  } catch (e) {
    return str;
  }

  return result;
};

/**
 * Parse a string as a legacy Sass object
 * cribbed from davidkpiano/sassport
 *
 * @private
 * @param {string} str
 * @return {LegacyObject}
 */
export const parseStringLegacy = (str) => {
  let result;

  try {
    sass.renderSync({
      data: `$_: ___((${str}));`,
      functions: {
        "___($value)": (value) => {
          result = value;
          return value;
        },
      },
    });
  } catch (e) {
    return str;
  }

  return result;
};

/**
 * Function to handle 'toString()' methods with legacy API.
 *
 * @private
 * @param {LegacyObject} obj
 * @return {string}
 */
export const legacyToString = (obj) => (obj.dartValue || obj).toString();

/**
 * Return a value from an object and a list of keys.
 * @private
 * @param {Object|Array} obj
 * @param {*[]} attrs
 */
export const getAttr = (obj, attrs) => attrs.reduce((o, attr) => o[attr], obj);