import path from "path";
import os from "os";
import fs from "fs";
import { ezyrnd } from "ezyrnd";
import LogBot from "logbotjs";
import finder from "./finder.js";
import Cryptr from "cryptr";
import { sync as writeFileAtomicSync } from "write-file-atomic";

class Config {
  appName = "wranglebot";
  versionNumber = "9";
  cryptr = new Cryptr("c9b7fd52-e1c7-4c23-9e7f-75639b91f276");
  pathToConfigFile: string = "./wb_data/config.json";
  appDataLocation: string = "./wb_data";
  config: any;

  constructor() {

  }

  build(appDataLocation?: string){

    if (appDataLocation) this.appDataLocation = appDataLocation;

    /**
     * Build
     */
    const build = () => {
      if (!finder.existsSync(this.appDataLocation)) {
        finder.mkdirSync(this.appDataLocation);
        if (!finder.existsSync(this.appDataLocation)) {
          LogBot.log(500, `Unable to create config directory at "${this.appDataLocation}". No permissions?`);
          process.exit(1);
        } else {
          LogBot.log(100, "Creating new config in homedir...");
        }
      } else {
        LogBot.log(100, "Loading config from homedir...");
      }
    };
    build();

    //set logfile path
    LogBot.setPathToLogFile(this.appDataLocation + "/log.txt");

    this.pathToConfigFile = path.join(this.appDataLocation, "config.json");

    if (finder.existsSync(this.pathToConfigFile)) {
      this.config = JSON.parse(fs.readFileSync(this.pathToConfigFile).toString());

      if (!this.config["wb-version"] || this.config["wb-version"] !== this.versionNumber) {
        LogBot.log(409, "Upgrading config from " + this.config.version + " to version " + this.versionNumber);
        this.set("wb-version", this.versionNumber);
        this.set("jwt-secret", this.cryptr.encrypt(ezyrnd.randomString(128)));
      }
    } else {
      LogBot.log(100, "Creating config version " + this.versionNumber);
      this.config = {
        "jwt-secret": this.cryptr.encrypt(ezyrnd.randomString(128)),
        "wb-version": this.versionNumber,
      };
      this.save();
    }
  }

  getPathToUserData() {
    return this.appDataLocation;
  }

  set(key, value, encrypt = false) {
    if (encrypt) {
      value = this.cryptr.encrypt(value);
    }
    this.setConfig(key, value);
  }

  /**
   * Sets a Config value, if no value is found, it return
   *
   * @param key
   * @param value
   */
  setConfig(key, value) {
    this.config[key] = value;
    this.save();
  }

  get(key, decrypt = false) {
    const val = this.getConfig(key);
    if (decrypt) {
      return this.cryptr.decrypt(val);
    }
    return val;
  }

  getConfig(key) {
    return this.config[key];
  }

  save() {
    writeFileAtomicSync(this.pathToConfigFile, JSON.stringify(this.config, null, 2));
  }
}
const config = new Config();
export default config;