import { join, extname } from "path";
import { existsSync, readdirSync, writeFileSync, mkdirSync } from "fs";
import { init, installExtensions } from "@janhq/core/node";

export async function setup() {
  /**
   * Setup Jan Data Directory
   */
  const appDir = process.env.JAN_DATA_DIRECTORY ?? join(__dirname, "..", "jan");

  console.debug(`Create app data directory at ${appDir}...`);
  if (!existsSync(appDir)) mkdirSync(appDir);
  //@ts-ignore
  global.core = {
    // Define appPath function for app to retrieve app path globaly
    appPath: () => appDir,
  };
  init({
    extensionsPath: join(appDir, "extensions"),
  });

  /**
   * Write app configurations. See #1619
   */
  console.debug("Writing config file...");
  writeFileSync(
    join(appDir, "settings.json"),
    JSON.stringify({
      data_folder: appDir,
    }),
    "utf-8"
  );

  /**
   * Install extensions
   */

  console.debug("Installing extensions...");

  const baseExtensionPath = join(__dirname, "../../..", "pre-install");
  const extensions = readdirSync(baseExtensionPath)
    .filter((file) => extname(file) === ".tgz")
    .map((file) => join(baseExtensionPath, file));

  await installExtensions(extensions);
  console.debug("Extensions installed");
}