import util from "util";
import fs from "fs";
import { config } from "dotenv";

// random(array) to select a random entry in array
export function random(array) {
  if (!array || array.length < 1) return null;
  return array[Math.floor(Math.random() * array.length)];
}

const optionalReplace = (token) => {
  return token === undefined || token === "" ? "" : (token === "true" || token === "false" ? token : "<redacted>");
};

// clean(text) to clean message of any private info or mentions
export function clean(text) {
  if (typeof text !== "string")
    text = util.inspect(text, { depth: 1 });

  text = text
    .replaceAll("`", `\`${String.fromCharCode(8203)}`)
    .replaceAll("@", `@${String.fromCharCode(8203)}`);

  const { parsed } = config();
  const imageServers = JSON.parse(fs.readFileSync(new URL("../config/servers.json", import.meta.url), { encoding: "utf8" })).image;

  if (imageServers?.length !== 0) {
    for (const { server, auth } of imageServers) {
      text = text.replaceAll(server, optionalReplace(server));
      text = text.replaceAll(auth, optionalReplace(auth));
    }
  }

  for (const env of Object.keys(parsed)) {
    text = text.replaceAll(parsed[env], optionalReplace(parsed[env]));
  }

  return text;
}

// textEncode(string) to encode characters for image processing
export function textEncode(string) {
  return string.replaceAll("&", "&amp;").replaceAll(">", "&gt;").replaceAll("<", "&lt;").replaceAll("\"", "&quot;").replaceAll("'", "&apos;").replaceAll("\\n", "\n").replaceAll("\\:", ":");
}