import * as SecureStore from 'expo-secure-store';
import { Platform } from 'react-native';

type StorageType = typeof Platform.OS;
type AvailableStorageType = "web"|"android"|"none";

interface useStorageFuncs {
  getItemAsync: (key: string) => Promise<string | null>;
  setItemAsync: (key: string, value: string) => Promise<void>;
  removeItemAsync: (key: string) => Promise<void>;
}

const storages: Record<AvailableStorageType, useStorageFuncs> = {
  android: {
    getItemAsync: async (token: string) => await SecureStore.getItemAsync(token),
    setItemAsync: async (token: string, value: string) => await SecureStore.setItemAsync(token, value),
    removeItemAsync: async (token: string) => await SecureStore.deleteItemAsync(token),
  },
  web: {
    getItemAsync: async (token: string) => localStorage.getItem(token),
    setItemAsync: async (token: string, value: string) => localStorage.setItem(token, value),
    removeItemAsync: async (token: string) => localStorage.removeItem(token)
  },
  none: {
    getItemAsync: async (token: string) => "not_realized",
    setItemAsync: async (token: string, value: string) => { },
    removeItemAsync: async (token: string) => { }
  }
}

const getStorage = (type: StorageType = Platform.OS): useStorageFuncs => {
  if(type in storages)
    return storages[type as AvailableStorageType];
  else
    return storages.none;
}

export default getStorage;