import axios from "axios";

import type { AuthUser } from "../types";

export interface AuthCredentials {
  username: string;
  password: string;
}

const authStorageKey = "resource-portal.auth";

export const getStoredCredentials = (): AuthCredentials | null => {
  try {
    const raw = window.sessionStorage.getItem(authStorageKey);
    if (!raw) return null;
    const parsed = JSON.parse(raw) as AuthCredentials;
    return parsed.username && parsed.password ? parsed : null;
  } catch {
    return null;
  }
};

export const setStoredCredentials = (credentials: AuthCredentials) => {
  window.sessionStorage.setItem(authStorageKey, JSON.stringify(credentials));
};

export const clearStoredCredentials = () => {
  window.sessionStorage.removeItem(authStorageKey);
};

export const api = axios.create({
  baseURL: import.meta.env.VITE_API_BASE_URL ?? "/api/v1",
});

api.interceptors.request.use((config) => {
  const credentials = getStoredCredentials();
  if (credentials && !config.auth) {
    config.auth = credentials;
  }
  return config;
});

export const getCurrentUser = async (credentials?: AuthCredentials) =>
  (await api.get<AuthUser>("/me", credentials ? { auth: credentials } : undefined)).data;