import { computed, ref } from "vue";
import { defineStore } from "pinia";

const AUTH_STORAGE_KEY = "fms-auth";

try {
  // Retain a session created before persistence moved from sessionStorage.
  const session = sessionStorage.getItem(AUTH_STORAGE_KEY);
  if (session && !localStorage.getItem(AUTH_STORAGE_KEY)) {
    localStorage.setItem(AUTH_STORAGE_KEY, session);
  }
} catch {
  // Storage can be unavailable in restricted browser contexts.
}

export const useAuthStore = defineStore(
  "auth",
  () => {
    const token = ref("");
    const orgId = ref("");
    const user = ref(null);
    const isAuthenticated = computed(() => Boolean(token.value));

    function setSession(session, organizationId) {
      token.value = session.token ?? session.access_token ?? "";
      orgId.value = session.orgid ?? organizationId;
      user.value = session.user ?? session.user_info ?? null;
    }

    function clearSession() {
      token.value = "";
      orgId.value = "";
      user.value = null;
    }

    return {
      token,
      orgId,
      user,
      isAuthenticated,
      setSession,
      clearSession,
    };
  },
  {
    persist: {
      key: AUTH_STORAGE_KEY,
      storage: localStorage,
      pick: ["token", "orgId", "user"],
    },
  },
);