"use client";

import Link from "next/link";
import { usePathname } from "next/navigation";
import { useAuth } from "../../lib/auth-store";
import { useBranding } from "../../lib/branding";
import { useApiResource } from "../../lib/use-api";
import type { DraftRecord } from "../../lib/api-types";
import { LogoMark } from "../brand/logo";
import { NavIcon } from "../brand";

const NAV: { href: string; label: string; icon: string; external?: boolean }[] = [
  { href: "/streams", label: "Streams", icon: "video" },
  { href: "/control-room", label: "Control Room", icon: "video" },
  { href: "/compose", label: "Compose", icon: "compose" },
  { href: "/calendar", label: "Calendar", icon: "calendar" },
  { href: "/chat", label: "Chat", icon: "chat" },
  { href: "/files", label: "Files", icon: "files" },
  { href: "/archive", label: "Archive", icon: "files" },
  { href: "/inbox", label: "Inbox", icon: "inbox" },
  { href: "/outreach", label: "Outreach", icon: "team" },
  { href: "/approvals", label: "Approvals", icon: "approvals" },
  { href: "/video", label: "Video", icon: "video" },
  { href: "/analytics", label: "Analytics", icon: "analytics" },
  { href: "/connections", label: "Channels", icon: "connections" },
  { href: "/team", label: "Team", icon: "team" },
  { href: "/audit", label: "Audit log", icon: "audit" },
  { href: "/onboarding", label: "Onboarding", icon: "home" },
  { href: "/settings", label: "Settings", icon: "settings" },
];

const identity = (drafts: DraftRecord[]): DraftRecord[] => drafts;
const emptyDrafts: DraftRecord[] = [];

export function Sidebar(): React.ReactElement {
  const pathname = usePathname();
  const { session, can } = useAuth();
  const branding = useBranding();
  const drafts = useApiResource<DraftRecord[], DraftRecord[]>("/publishing/drafts", identity, emptyDrafts, { state: "in_review", limit: 100 });
  // Real in-review count from the API; hidden while loading/offline and for non-approvers.
  const approvals = can("approval.grant") && drafts.source === "live" ? drafts.data.length : 0;
  // Branding is per collective; the session's workspace is the source of truth
  // for the name, branding only decorates it (and may be loading/unavailable).
  const workspaceName = session?.workspace.name ?? branding.workspaceName ?? "Studio";
  const showTagline = branding.source === "live" && branding.tagline !== null;
  return (
    <aside className="hidden h-screen w-52 shrink-0 flex-col border-r border-border-subtle bg-surface lg:flex">
      <div className="flex items-start gap-2.5 border-b border-border-subtle px-4 py-4">
        {branding.logoUrl !== null ? (
          <img
            src={branding.logoUrl}
            alt={`${workspaceName} logo`}
            width={30}
            height={30}
            className="mt-0.5 h-[30px] w-[30px] shrink-0 rounded object-contain"
          />
        ) : (
          <LogoMark size={30} />
        )}
        <div className="min-w-0 flex-1">
          <div className="text-xs font-semibold leading-tight tracking-tight" title={workspaceName}>
            {workspaceName}
          </div>
          {showTagline ? (
            <div className="mt-0.5 truncate text-2xs leading-snug text-text-faint" title={branding.tagline ?? undefined}>
              {branding.tagline}
            </div>
          ) : (
            <div className="truncate text-2xs text-text-faint" title={workspaceName}>
              T-HUB
            </div>
          )}
        </div>
      </div>
      <nav className="flex-1 overflow-y-auto scrollbar-thin p-2">
        {NAV.map((item) => {
          const active = !item.external && pathname.startsWith(item.href);
          const className = `group flex items-center justify-between rounded-md px-3 py-1.5 text-sm transition-colors duration-150 ${item.href === "/control-room" ? "min-h-11" : ""} ${
            active ? "bg-accent-dim text-accent" : "text-text-dim hover:bg-surface-2 hover:text-text"
          }`;
          const icon = <NavIcon name={item.icon} size={16} />;
          return item.external ? (
            <a key={item.href} href={item.href} target="_blank" rel="noreferrer" className={className}>
              <span className="flex items-center gap-2.5">{icon}{item.label}</span>
              <span className="text-2xs text-text-faint">↗</span>
            </a>
          ) : (
            <Link key={item.href} href={item.href} className={className}>
              <span className="flex items-center gap-2.5">{icon}{item.label}</span>
              {item.href === "/approvals" && approvals > 0 && (
                <span className="text-2xs text-text-faint">{approvals}</span>
              )}
            </Link>
          );
        })}
      </nav>
    </aside>
  );
}