import { APIClient } from "./ApiClient";

const TokenStateKey = "auth-state";

export class AuthApi {
  /**
   * Check out whether user is signed in or not
   */
  static get SignedIn(): boolean {
    return localStorage.getItem(TokenStateKey) !== null;
  }

  /**
   * Mark user as authenticated
   */
  static SetAuthenticated() {
    localStorage.setItem(TokenStateKey, "");
  }

  /**
   * Un-mark user as authenticated
   */
  static UnsetAuthenticated() {
    localStorage.removeItem(TokenStateKey);
  }

  /**
   * Authenticate using an username and a password
   *
   * @param username The username to use
   * @param password The password to use
   */
  static async LoginWithPassword(
    username: string,
    password: string
  ): Promise<void> {
    await APIClient.exec({
      uri: "/auth/local",
      method: "POST",
      jsonData: {
        username: username,
        password: password,
      },
    });

    this.SetAuthenticated();
  }

  /**
   * Start OpenID login
   */
  static async StartOpenIDLogin(): Promise<{ url: string }> {
    return (
      await APIClient.exec({
        uri: "/auth/start_oidc",
        method: "GET",
      })
    ).data;
  }

  /**
   * Finish OpenID login
   */
  static async FinishOpenIDLogin(code: string, state: string): Promise<void> {
    await APIClient.exec({
      uri: "/auth/finish_oidc",
      method: "POST",
      jsonData: { code: code, state: state },
    });

    this.SetAuthenticated();
  }

  /**
   * Sign out
   */
  static async SignOut(): Promise<void> {
    await APIClient.exec({
      uri: "/auth/sign_out",
      method: "GET",
    });

    this.UnsetAuthenticated();
  }
}