import { CircleUser, Globe2, Lock, Server, Settings, Users } from "lucide-react";
import type { ReactNode } from "react";
import { NavLink, useSubmit } from "react-router";

import Logo from "~/components/Logo";
import Menu from "~/components/Menu";
import { AuthSession } from "~/server/web/sessions";
import cn from "~/utils/cn";

interface Props {
  configAvailable: boolean;
  onboarding: boolean;
  user?: AuthSession["user"];
  access: {
    ui: boolean;
    machines: boolean;
    dns: boolean;
    users: boolean;
    policy: boolean;
    settings: boolean;
  };
}

interface LinkProps {
  href: string;
  text: string;
}

interface TabLinkProps {
  name: string;
  to: string;
  icon: ReactNode;
}

function TabLink({ name, to, icon }: TabLinkProps) {
  return (
    <div className="relative py-2">
      <NavLink
        className={({ isActive }) =>
          cn(
            "px-3 py-2 flex items-center rounded-md text-nowrap gap-x-2.5",
            "after:absolute after:bottom-0 after:left-3 after:right-3",
            "after:h-0.5 after:bg-mist-900 dark:after:bg-mist-200",
            "hover:bg-mist-200 dark:hover:bg-mist-900",
            "focus:outline-hidden focus:ring-2 focus:ring-indigo-500/40 focus:ring-offset-1",
            "dark:focus:ring-indigo-400/40 dark:focus:ring-offset-mist-900",
            isActive ? "after:visible" : "after:invisible",
          )
        }
        prefetch="intent"
        to={to}
      >
        {icon} {name}
      </NavLink>
    </div>
  );
}

function Link({ href, text }: LinkProps) {
  return (
    <a
      className={cn(
        "hidden sm:block hover:underline text-sm",
        "focus:outline-hidden focus:ring-2 focus:ring-indigo-500/40 focus:ring-offset-1 rounded-md",
        "dark:focus:ring-indigo-400/40 dark:focus:ring-offset-mist-900",
      )}
      href={href}
      rel="noreferrer"
      target="_blank"
    >
      {text}
    </a>
  );
}

export default function Header(data: Props) {
  const submit = useSubmit();

  return (
    <header
      className={cn(
        "bg-mist-100 dark:bg-mist-950",
        "text-mist-800 dark:text-mist-200",
        "dark:border-b dark:border-mist-800",
        "shadow-inner",
      )}
    >
      <div className="container flex items-center justify-between py-4">
        <div className="flex items-center gap-x-2">
          <Logo />
          <h1 className="text-2xl font-semibold">headplane</h1>
        </div>
        <div className="flex items-center gap-x-4">
          <Link href="https://tailscale.com/download" text="Download" />
          <Link href="https://github.com/tale/headplane" text="GitHub" />
          <Link href="https://github.com/juanfont/headscale" text="Headscale" />
          {data.user ? (
            <Menu>
              <Menu.IconButton className={cn(data.user.picture ? "p-0" : "")} label="User">
                {data.user.picture ? (
                  <img
                    alt={data.user.name}
                    className="h-8 w-8 rounded-full"
                    src={data.user.picture}
                  />
                ) : (
                  <CircleUser />
                )}
              </Menu.IconButton>
              <Menu.Panel
                disabledKeys={["profile"]}
                onAction={(key) => {
                  if (key === "logout") {
                    submit(
                      {},
                      {
                        method: "POST",
                        action: "/logout",
                      },
                    );
                  }
                }}
              >
                <Menu.Section>
                  <Menu.Item key="profile" textValue="Profile">
                    <div className="text-black dark:text-mist-50">
                      <p className="font-bold">{data.user.name}</p>
                      <p>{data.user.email}</p>
                    </div>
                  </Menu.Item>
                  <Menu.Item key="logout" textValue="Logout">
                    <p className="text-red-500 dark:text-red-400">Logout</p>
                  </Menu.Item>
                </Menu.Section>
              </Menu.Panel>
            </Menu>
          ) : undefined}
        </div>
      </div>
      {data.access.ui && !data.onboarding ? (
        <nav className="container flex items-center gap-x-4 overflow-x-auto font-semibold">
          {data.access.machines ? (
            <TabLink icon={<Server className="w-5" />} name="Machines" to="/machines" />
          ) : undefined}
          {data.access.users ? (
            <TabLink icon={<Users className="w-5" />} name="Users" to="/users" />
          ) : undefined}
          {data.access.policy ? (
            <TabLink icon={<Lock className="w-5" />} name="Access Control" to="/acls" />
          ) : undefined}
          {data.configAvailable ? (
            <>
              {data.access.dns ? (
                <TabLink icon={<Globe2 className="w-5" />} name="DNS" to="/dns" />
              ) : undefined}
              {data.access.settings ? (
                <TabLink icon={<Settings className="w-5" />} name="Settings" to="/settings" />
              ) : undefined}
            </>
          ) : undefined}
        </nav>
      ) : undefined}
    </header>
  );
}