import type { ReactNode } from "react";
import Link from "next/link";
import { ArrowLeftIcon } from "lucide-react";

import Image from "@/components/ui/resilient-image";
import { Button } from "@/components/ui/button";
import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
import { SiteHeader } from "@/components/public/site-header";
import { SiteFooter } from "@/components/public/site-footer";
import { ScrollableNav } from "@/components/public/scrollable-nav";
import { LiveRefresh } from "@/components/live-refresh";
import type { PublicGuideSummary } from "@/lib/guides/queries";
import { commentNavigationSection } from "@/lib/comments/navigation";
import { navigationIconPath } from "@/lib/navigation";
import { cn } from "@/lib/utils";

export function publicSectionTitle(slug: string, fallback: string): string {
  if (slug === "weapon") return "Weapons";
  if (slug === "artifact") return "Artifacts";
  if (slug === "constellations") return "Constellations";
  if (slug === "team") return "Team calc";
  if (slug === "comment") return "Comment";
  return fallback;
}

export function GuidePageShell({
  guide,
  sections: guideSections,
  section,
  preview = false,
  children,
}: {
  guide: Pick<PublicGuideSummary, "id" | "slug" | "name" | "characterKey" | "coverUrl">;
  sections: Pick<PublicGuideSummary["sections"][number], "id" | "slug" | "title">[];
  section?: string;
  preview?: boolean;
  children: ReactNode;
}) {
  const sections = preview ? guideSections : [...guideSections, commentNavigationSection(guide.id)];
  const baseHref = preview ? `/admin/${guide.characterKey}/preview` : `/${guide.slug}`;
  const currentPageTitle = section
    ? publicSectionTitle(section, sections.find((item) => item.slug === section)?.title ?? section)
    : "Overview";
  return (
    <div className="flex min-h-svh flex-col bg-background">
      <LiveRefresh endpoint={`/api/events/page/${guide.id}`} />
      <SiteHeader editHref={`/admin/${guide.characterKey}`} guideId={guide.id} />
      {preview ? (
        <div className="mx-auto w-full max-w-7xl px-4 pt-4 sm:px-6 lg:px-8">
          <Alert>
            <AlertTitle>Preview</AlertTitle>
            <AlertDescription>หน้านี้แสดงข้อมูลที่บันทึกล่าสุดและเปิดดูได้เฉพาะผู้ดูแล</AlertDescription>
          </Alert>
        </div>
      ) : null}
      <div className="sticky top-0 z-40 bg-background/95 supports-backdrop-filter:backdrop-blur">
        <div className="mx-auto flex min-h-12 w-full max-w-7xl items-center gap-3 px-4 sm:min-h-16 sm:px-6 lg:px-8">
          <Button variant="ghost" size="icon" className="max-sm:size-11" render={<Link href={preview ? `/admin/${guide.characterKey}` : "/"} />} nativeButton={false} aria-label={preview ? "กลับหน้าแก้ไข" : "กลับหน้ารวม"}>
            <ArrowLeftIcon />
          </Button>
          <div className="relative size-10 shrink-0 overflow-hidden rounded-lg border sm:size-16">
            <Image
              src={guide.coverUrl}
              alt={guide.name}
              fill
              sizes="(min-width: 640px) 64px, 40px"
              className="object-cover"
            />
          </div>
          <div className="flex min-w-0 flex-1 flex-col items-start gap-1">
            <p className="truncate text-sm text-muted-foreground">
              {guide.name}
            </p>
            <p className="max-w-full truncate font-heading text-lg font-semibold sm:text-2xl">
              {currentPageTitle}
            </p>
          </div>
        </div>
        <div className="mx-auto w-full max-w-7xl px-4 sm:px-6 lg:px-8">
          <ScrollableNav
            ariaLabel={`เมนูคู่มือ ${guide.name}`}
            activeKey={section ?? "overview"}
            className="min-h-11 w-full rounded-xl border bg-card p-1 sm:p-2"
          >
            <Link
              href={baseHref}
              aria-current={!section ? "page" : undefined}
              className={cn(
                "flex min-h-11 shrink-0 items-center gap-2 whitespace-nowrap rounded-md px-3 text-sm transition-colors outline-none focus-visible:ring-2 focus-visible:ring-ring",
                !section
                  ? "bg-primary/15 font-semibold text-primary"
                  : "text-muted-foreground hover:bg-muted hover:text-foreground",
              )}
              prefetch={false}
            >
              <Image
                src={navigationIconPath("overview")!}
                alt=""
                width={20}
                height={20}
                className="size-5 object-contain"
              />
              Overview
            </Link>
            {sections.map((item) => (
              <Link
                key={item.id}
                href={`${baseHref}/${item.slug}`}
                aria-current={section === item.slug ? "page" : undefined}
                className={cn(
                  "flex min-h-11 shrink-0 items-center gap-2 whitespace-nowrap rounded-md px-3 text-sm transition-colors outline-none focus-visible:ring-2 focus-visible:ring-ring",
                  section === item.slug
                    ? "bg-primary/15 font-semibold text-primary"
                    : "text-muted-foreground hover:bg-muted hover:text-foreground",
                )}
                prefetch={false}
              >
                {navigationIconPath(item.slug) ? (
                  <Image
                    src={navigationIconPath(item.slug)!}
                    alt=""
                    width={20}
                    height={20}
                    className="size-5 object-contain"
                  />
                ) : null}
                {publicSectionTitle(item.slug, item.title)}
              </Link>
            ))}
          </ScrollableNav>
        </div>
      </div>
      <main className="mx-auto w-full max-w-7xl p-4 sm:p-6 lg:p-10">
        {children}
      </main>
      <SiteFooter />
    </div>
  );
}