import logger from '../services/core/XompassLogger';
import { ClientStorage } from './ClientStorage';

export class BrowserStorage implements ClientStorage {
  /**
   * @method get
   * @param key Storage key name
   * @description
   * The getter will return any type of data persisted in localStorage.
   */
  get(key: string): any {
    const data = BrowserStorage.parse(localStorage.getItem(key));
    if (!data || data.e && new Date(data.e) < new Date()) {
      return null;
    }
    return data.v;
  }

  /**
   * @method set
   * @param key Storage key name
   * @param value Any value
   * @param [expires] The date of expiration (Optional)
   * @description
   * The setter will return any type of data persisted in localStorage.
   */
  set(key: string, value: any, expires?: Date): void {
    const data = { v: value, e: expires ? expires.getTime() : undefined };
    localStorage.setItem(key, JSON.stringify(data));
  }

  /**
   * @method remove
   * @param key Storage key name
   * @description
   * This method will remove a localStorage item from the client.
   */
  remove(key: string): void {
    localStorage.removeItem(key);
  }

  /**
   * @method parse
   * @param value Input data expected to be JSON
   * @description
   * This method will parse the string as JSON if possible, otherwise will
   * return the value itself.
   */
  private static parse(value: string | null): any {
    if (!value) {
      return value;
    }

    try {
      return JSON.parse(value);
    } catch (e) {
      return value;
    }
  }
}