"use client";

import { usePathname } from "next/navigation";
import { getToken } from "../lib/auth";
import { canAccess, featureForPath } from "../lib/features";
import { useFeatureUser } from "./FeatureGate";

type NavigationItem = {
  href: string;
  label: string;
  shortLabel: string;
  icon: "dashboard" | "media" | "issues" | "invites" | "settings" | "stats";
  adminOnly?: boolean;
  match: (path: string) => boolean;
};

const NAVIGATION: NavigationItem[] = [
  {
    href: "/new-requests",
    label: "New Request",
    shortLabel: "New",
    icon: "media",
    match: (path) => path === "/new-requests",
  },
  {
    href: "/",
    label: "My Requests",
    shortLabel: "Requests",
    icon: "dashboard",
    match: (path) => path === "/" || path.startsWith("/requests/"),
  },
  {
    href: "/insights",
    label: "My Stats",
    shortLabel: "Stats",
    icon: "stats",
    match: (path) => path === "/insights" || path.startsWith("/insights/"),
  },
  {
    href: "/portal/issues",
    label: "Issues",
    shortLabel: "Issues",
    icon: "issues",
    match: (path) => path.startsWith("/portal/issues"),
  },
  {
    href: "/profile/invites",
    label: "Invites",
    shortLabel: "Invites",
    icon: "invites",
    match: (path) => path.startsWith("/profile/invites"),
  },
  {
    href: "/admin",
    label: "Configuration",
    shortLabel: "Config",
    icon: "settings",
    adminOnly: true,
    match: (path) => path.startsWith("/admin") || path.startsWith("/users"),
  },
];

const HIDDEN_ROUTES = ["/login", "/signup", "/forgot-password", "/reset-password", "/how-it-works"];

function NavigationIcon({ name }: { name: NavigationItem["icon"] }) {
  const paths: Record<NavigationItem["icon"], React.ReactNode> = {
    stats: (
      <>
        <path d="M4 20h16M6 16v-5m6 5V4m6 12V8" />
      </>
    ),
    dashboard: (
      <>
        <rect x="3" y="3" width="7" height="7" rx="1" />
        <rect x="14" y="3" width="7" height="7" rx="1" />
        <rect x="3" y="14" width="7" height="7" rx="1" />
        <rect x="14" y="14" width="7" height="7" rx="1" />
      </>
    ),
    media: (
      <>
        <rect x="3" y="5" width="18" height="15" rx="2" />
        <path d="m8 3 2 4m4-4 2 4M3 10h18" />
        <path d="m10 13 5 3-5 3z" />
      </>
    ),
    issues: (
      <>
        <path d="M12 3 2.8 19h18.4L12 3Z" />
        <path d="M12 9v4m0 3h.01" />
      </>
    ),
    invites: (
      <>
        <circle cx="9" cy="8" r="3" />
        <path d="M3.5 20v-2.2A4.8 4.8 0 0 1 8.3 13h1.4a4.8 4.8 0 0 1 3.8 1.9M17 8v6m-3-3h6" />
      </>
    ),
    settings: (
      <>
        <circle cx="12" cy="12" r="3" />
        <path d="M19.4 15a1.7 1.7 0 0 0 .3 1.9l.1.1-2.8 2.8-.1-.1a1.7 1.7 0 0 0-1.9-.3 1.7 1.7 0 0 0-1 1.6v.2h-4V21a1.7 1.7 0 0 0-1-1.6 1.7 1.7 0 0 0-1.9.3l-.1.1L4.2 17l.1-.1a1.7 1.7 0 0 0 .3-1.9A1.7 1.7 0 0 0 3 14H2.8v-4H3a1.7 1.7 0 0 0 1.6-1 1.7 1.7 0 0 0-.3-1.9L4.2 7 7 4.2l.1.1a1.7 1.7 0 0 0 1.9.3A1.7 1.7 0 0 0 10 3V2.8h4V3a1.7 1.7 0 0 0 1 1.6 1.7 1.7 0 0 0 1.9-.3l.1-.1L19.8 7l-.1.1a1.7 1.7 0 0 0-.3 1.9 1.7 1.7 0 0 0 1.6 1h.2v4H21a1.7 1.7 0 0 0-1.6 1Z" />
      </>
    ),
  };
  return (
    <svg viewBox="0 0 24 24" aria-hidden="true">
      {paths[name]}
    </svg>
  );
}

export default function WorkspaceNavigation() {
  const pathname = usePathname();
  const { user, ready } = useFeatureUser();
  const role = user?.role;

  if (!ready || !getToken() || HIDDEN_ROUTES.some((route) => pathname.startsWith(route))) {
    return null;
  }

  const items = NAVIGATION.filter(
    (item) => (!item.adminOnly || role === "admin") && canAccess(user, featureForPath(item.href)),
  );

  return (
    <nav className="workspace-mobile-nav" aria-label="Mobile navigation">
      {items.map((item) => (
        <a key={item.href} href={item.href} className={item.match(pathname) ? "is-active" : undefined}>
          <NavigationIcon name={item.icon} />
          <span>{item.shortLabel}</span>
        </a>
      ))}
    </nav>
  );
}