import { SessionConfig, SessionConfigStore } from "./SessionStore.js";

const CLIENT_PREFIX = "wildcard";
const STORE_PREFIX = CLIENT_PREFIX + "-session-store";

export class LocalStorageClientStore implements SessionConfigStore {
  async storeNewSessionConfig(sessionConfig: SessionConfig): Promise<string> {
    const sessionUuid = crypto.randomUUID();
    const key = STORE_PREFIX + "-" + sessionUuid;
    const stringifiedConfig = JSON.stringify(sessionConfig);
    localStorage.setItem(key, stringifiedConfig);
    return sessionUuid;
  }
  async overrideExistingSessionConfig(
    sessionUuid: string,
    sessionConfig: SessionConfig,
  ): Promise<void> {
    const key = STORE_PREFIX + "-" + sessionUuid;
    const stringifiedConfig = JSON.stringify(sessionConfig);
    localStorage.setItem(key, stringifiedConfig);
    return;
  }
  async getSessionConfigByUuid(sessionUuid: string): Promise<SessionConfig | null> {
    const key = STORE_PREFIX + "-" + sessionUuid;
    const sessionConfigString = localStorage.getItem(key);
    if (sessionConfigString == null) return null;
    const sessionConfig = JSON.parse(sessionConfigString);
    return sessionConfig;
  }
  async getSessionConfigs(): Promise<Map<string, SessionConfig> | null> {
    if (localStorage.length == 0) return null;
    let sessionConfigs = new Map<string, SessionConfig>();
    for (var i = 1; i < localStorage.length; i++) {
      let currentItemKey = localStorage.key(i);
      if (currentItemKey?.startsWith(STORE_PREFIX)) {
        const key = currentItemKey.replace(STORE_PREFIX + "-", "");
        const value = JSON.parse(localStorage.getItem(currentItemKey)!);
        sessionConfigs.set(key, value);
      }
    }
    return sessionConfigs;
  }
}