import { set, get as getIDB, keys, del, Store } from "idb-keyval";

const toArray = () =>
  new Promise((acc) => {
    keys().then((keys) => acc(Promise.all(keys.map((key) => getIDB(key)))));
  });

export interface DBInstance {
  name: string;
  db: string;
  set: (key: IDBValidKey, value: any) => Promise<void>;
  get: (key: IDBValidKey) => Promise<any>;
  del: (key: IDBValidKey) => Promise<void>;
  keys: () => Promise<IDBValidKey[]>;
  entries: () => Promise<Array<any>>;
}

export default (name = "podcasts", db = "podcastsuite"): DBInstance => ({
  name,
  db,
  set: function (key: IDBValidKey, value: any) {
    const store = new Store(this.db, this.name);
    return set(key, value, store);
  },
  get: function (key: IDBValidKey): Promise<any> | null {
    const store = new Store(this.db, this.name);
    return getIDB(key, store) || null;
  },
  del: function (key: IDBValidKey) {
    const store = new Store(this.db, this.name);
    return del(key, store);
  },
  keys: async function () {
    const store = new Store(this.db, this.name);
    return await keys(store);
  },
  entries: async function () {
    const store = new Store(this.db, this.name);
    const keys = await this.keys(store);
    return Promise.all(keys.map((key) => getIDB(key, store)));
  },
});