import {AuthProvider, HttpError} from "react-admin";
import data from "./users.json";

export const authProvider: AuthProvider = {
  login: ({ username, password }) => {
    const user = data.users.find(
        (u) => u.username === username && u.password === password,
    );

    if (user) {
      const { password, ...userToPersist } = user;
        localStorage.setItem("user", JSON.stringify(userToPersist));
      return Promise.resolve();
    }

    return Promise.reject(
        new HttpError("Invalid username or password", 401, {
          message: "Invalid username or password",
        }),
    );
  },
  async logout() {
    localStorage.removeItem("user");
    return Promise.resolve();
  },
  async checkAuth() {
    return localStorage.getItem("user") ? Promise.resolve() : Promise.reject();
  },
  async getIdentity() {
    const persistedUser = localStorage.getItem("user");
    const user = persistedUser ? JSON.parse(persistedUser) : null;

    return Promise.resolve(user);
  },
  async checkError() {
    return Promise.resolve();
  },
  async getPermissions() {
    return Promise.resolve(undefined);
  },
};