import { FC, ReactNode } from "react";
import { observer } from "mobx-react";
import { useRouter } from "next/router";
import useSWR from "swr";
import { Spinner } from "@plane/ui";
// helpers
import { EPageTypes } from "@/helpers/authentication.helper";
// hooks
import { useUser, useUserProfile, useUserSettings, useWorkspace } from "@/hooks/store";

type TPageType = EPageTypes;

type TAuthenticationWrapper = {
  children: ReactNode;
  pageType?: TPageType;
};

const isValidURL = (url: string): boolean => {
  const disallowedSchemes = /^(https?|ftp):\/\//i;
  return !disallowedSchemes.test(url);
};

export const AuthenticationWrapper: FC<TAuthenticationWrapper> = observer((props) => {
  const router = useRouter();
  const { next_path } = router.query;
  // props
  const { children, pageType = EPageTypes.AUTHENTICATED } = props;
  // hooks
  const { isLoading: isUserLoading, data: currentUser, fetchCurrentUser } = useUser();
  const { data: currentUserProfile } = useUserProfile();
  const { data: currentUserSettings } = useUserSettings();
  const { workspaces } = useWorkspace();

  const { isLoading: isUserSWRLoading } = useSWR("USER_INFORMATION", async () => await fetchCurrentUser(), {
    revalidateOnFocus: false,
    shouldRetryOnError: false,
  });

  const getWorkspaceRedirectionUrl = (): string => {
    let redirectionRoute = "/profile";

    // validating the next_path from the router query
    if (next_path && isValidURL(next_path.toString())) {
      redirectionRoute = next_path.toString();
      return redirectionRoute;
    }

    // validate the last and fallback workspace_slug
    const currentWorkspaceSlug =
      currentUserSettings?.workspace?.last_workspace_slug || currentUserSettings?.workspace?.fallback_workspace_slug;

    // validate the current workspace_slug is available in the user's workspace list
    const isCurrentWorkspaceValid = Object.values(workspaces || {}).findIndex(
      (workspace) => workspace.slug === currentWorkspaceSlug
    );

    if (isCurrentWorkspaceValid >= 0) redirectionRoute = `/${currentWorkspaceSlug}`;

    return redirectionRoute;
  };

  if (isUserSWRLoading || isUserLoading)
    return (
      <div className="relative flex h-screen w-full items-center justify-center">
        <Spinner />
      </div>
    );

  if (pageType === EPageTypes.PUBLIC) return <>{children}</>;

  if (pageType === EPageTypes.NON_AUTHENTICATED) {
    if (!currentUser?.id) return <>{children}</>;
    else {
      if (currentUserProfile?.id && currentUserProfile?.is_onboarded) {
        const currentRedirectRoute = getWorkspaceRedirectionUrl();
        router.push(currentRedirectRoute);
        return <></>;
      } else {
        router.push("/onboarding");
        return <></>;
      }
    }
  }

  if (pageType === EPageTypes.ONBOARDING) {
    if (!currentUser?.id) {
      router.push("/accounts/sign-in");
      return <></>;
    } else {
      if (currentUser && currentUserProfile?.id && currentUserProfile?.is_onboarded) {
        const currentRedirectRoute = getWorkspaceRedirectionUrl();
        router.push(currentRedirectRoute);
        return <></>;
      } else return <>{children}</>;
    }
  }

  if (pageType === EPageTypes.SET_PASSWORD) {
    if (!currentUser?.id) {
      router.push("/accounts/sign-in");
      return <></>;
    } else {
      if (
        currentUser &&
        !currentUser?.is_password_autoset &&
        currentUserProfile?.id &&
        currentUserProfile?.is_onboarded
      ) {
        const currentRedirectRoute = getWorkspaceRedirectionUrl();
        router.push(currentRedirectRoute);
        return <></>;
      } else return <>{children}</>;
    }
  }

  if (pageType === EPageTypes.AUTHENTICATED) {
    if (currentUser?.id) {
      if (currentUserProfile && currentUserProfile?.id && currentUserProfile?.is_onboarded) return <>{children}</>;
      else {
        router.push(`/onboarding`);
        return <></>;
      }
    } else {
      router.push("/accounts/sign-in");
      return <></>;
    }
  }

  return <>{children}</>;
});