import type { Cacheable, ICache } from './shared'
import { CACHE_KEY_PREFIX } from './shared'

export class LocalStorageCache implements ICache {
  public set<T = Cacheable>(key: string, entry: T) {
    localStorage.setItem(key, JSON.stringify(entry))
  }

  public get<T = Cacheable>(key: string) {
    const json = window.localStorage.getItem(key)

    if (!json)
      return

    try {
      const payload = JSON.parse(json) as T
      return payload
    }
    catch (e) {
      /* istanbul ignore next */

    }
  }

  public remove(key: string) {
    localStorage.removeItem(key)
  }

  public allKeys() {
    return Object.keys(window.localStorage).filter(key =>
      key.startsWith(CACHE_KEY_PREFIX),
    )
  }
}