/**
 * Simple file-based datastore
 */

import path from "path";
import fs from "mz/fs";
import mkdirp from "mkdirp";

type Config = { [key: string]: string };

export class Store {
  static getDir(): string {
    return path.join(__dirname, "store");
  }

  async load(uri: string): Promise<Config> {
    const filename = path.join(Store.getDir(), uri);
    const data = await fs.readFile(filename, "utf8");
    return JSON.parse(data) as Config;
  }

  async save(uri: string, config: Config): Promise<void> {
    await mkdirp(Store.getDir());
    const filename = path.join(Store.getDir(), uri);
    await fs.writeFile(filename, JSON.stringify(config), "utf8");
  }
}