"use client";

import { useEffect, useState } from "react";
import Link from "next/link";
import { RefreshCwIcon } from "lucide-react";
import { Avatar, AvatarImage, AvatarFallback } from "@/components/ui/avatar";
import { Button } from "@/components/ui/button";
import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
import { Field, FieldGroup, FieldLabel } from "@/components/ui/field";
import { FuzzyCombobox, ComboboxContent, ComboboxEmpty, ComboboxInput, ComboboxItem, ComboboxList } from "@/components/ui/combobox";
import { Alert, AlertDescription } from "@/components/ui/alert";
import { Empty, EmptyHeader, EmptyTitle, EmptyDescription } from "@/components/ui/empty";
import { Table, TableBody, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import type { CommentPage } from "@/lib/comments/types";
import { characterRarityGradientClass } from "@/lib/catalog/rarity";
import { cn } from "@/lib/utils";
import { useMarkCommentsRead } from "./admin-unread-comments";
import { CommentCard, CommentThread } from "./comment-card";
import { AdminCommentRowsSkeleton } from "./comment-skeleton";
import { useCommentEvents } from "./use-comment-events";
import { useCommentFeed } from "./use-comment-feed";

type TargetOption = { value: string; label: string; image: string | null; rarity: number | null; characterKey: string | null };
export function AdminCommentInbox({ initial, targets, initialTarget, initialComment }: { initial: CommentPage; targets: TargetOption[]; initialTarget?: string; initialComment?: string }) {
  const [target, setTarget] = useState<TargetOption | null>(targets.find((item) => item.value === initialTarget) ?? null);
  const [status, setStatus] = useState("all");
  const [answered, setAnswered] = useState("all");
  const query = new URLSearchParams({ view: "inbox", grouped: "true", status, unanswered: String(answered === "unanswered") });
  if (target) query.set("target", target.value);
  const feed = useCommentFeed(`/api/admin/comments?${query}`, initial);
  useCommentEvents({ admin: true }, () => feed.refresh({ silent: true, forceRevision: true }));
  const markRead = useMarkCommentsRead();
  useEffect(() => { void markRead(target?.value ?? "all"); }, [markRead, target, feed.revision]);
  return <div className="flex min-w-0 flex-col gap-6 max-md:[&_button]:min-h-11 max-md:[&_button]:min-w-11">
    {initialComment && initialTarget && <section className="flex min-w-0 flex-col gap-3" aria-label="การสนทนาจากการแจ้งเตือน">
      <h2 className="font-heading text-lg font-semibold">การสนทนาจากการแจ้งเตือน</h2>
      <CommentThread rootId={initialComment} expectedTarget={initialTarget} onChange={() => feed.refresh({ silent: true })} />
    </section>}
    <FieldGroup className="lg:grid lg:grid-cols-[repeat(3,minmax(0,1fr))_auto] lg:items-end">
      <Field><FieldLabel>ไกด์หรือรอบ Stygian</FieldLabel>
        <FuzzyCombobox items={targets} value={target} onValueChange={setTarget} itemToStringLabel={(item) => item.label} itemToStringValue={(item) => item.value}
          searchNames={(item) => [item.label]} autoHighlight>
          <ComboboxInput aria-label="ค้นหาไกด์หรือรอบ Stygian" placeholder="ทุกไกด์และทุกรอบ" showClear />
          <ComboboxContent><ComboboxEmpty>ไม่พบไกด์ที่ตรงกัน</ComboboxEmpty><ComboboxList>{(item: TargetOption) => <ComboboxItem key={item.value} value={item}><Avatar className={cn("size-9 shrink-0", characterRarityGradientClass(item.characterKey, item.rarity))}><AvatarImage src={item.image ?? undefined} alt="" /><AvatarFallback>{item.label.slice(0, 2)}</AvatarFallback></Avatar><span className="min-w-0 flex-1 truncate">{item.label}</span></ComboboxItem>}</ComboboxList></ComboboxContent>
        </FuzzyCombobox>
      </Field>
      <Field><FieldLabel>การแสดงผล</FieldLabel><ToggleGroup className="max-w-full flex-wrap" value={[status]} onValueChange={(values) => { if (values[0]) setStatus(values[0]); }} variant="outline" aria-label="กรองการแสดงผลความคิดเห็น">
        <ToggleGroupItem value="all">ทั้งหมด</ToggleGroupItem><ToggleGroupItem value="visible">แสดงอยู่</ToggleGroupItem><ToggleGroupItem value="hidden">ซ่อนอยู่</ToggleGroupItem>
      </ToggleGroup></Field>
      <Field><FieldLabel>การตอบกลับจากผู้ดูแล</FieldLabel><ToggleGroup className="max-w-full flex-wrap" value={[answered]} onValueChange={(values) => { if (values[0]) setAnswered(values[0]); }} variant="outline" aria-label="กรองการตอบกลับจากผู้ดูแล">
        <ToggleGroupItem value="all">ทุกความคิดเห็น</ToggleGroupItem><ToggleGroupItem value="unanswered">ยังไม่ได้ตอบ</ToggleGroupItem>
      </ToggleGroup></Field>
      <Button variant="outline" className="self-end" disabled={feed.busy} onClick={() => void feed.refresh({ silent: false, forceRevision: true })}><RefreshCwIcon data-icon="inline-start" />รีเฟรช</Button>
    </FieldGroup>
    {feed.error && <Alert variant="destructive"><AlertDescription>{feed.error}</AlertDescription></Alert>}
    {feed.page.items.length > 0 && <section aria-label="ความคิดเห็นจากทุกไกด์และทุกรอบ Stygian" className="flex min-w-0 flex-col">
      <Table className="table-fixed max-md:block" aria-label="ความคิดเห็นจากทุกไกด์และทุกรอบ Stygian">
        <TableHeader className="max-md:sr-only"><TableRow>
          <TableHead scope="col" className="px-0">ความคิดเห็น</TableHead>
          <TableHead scope="col" className="w-[280px] px-0 text-right">เนื้อหา</TableHead>
        </TableRow></TableHeader>
        <TableBody className="max-md:block">
          {feed.page.items.map((item) => <CommentCard key={item.id} item={item} viewer={feed.page.viewer} inbox onChange={() => feed.refresh({ silent: true, forceRevision: true })} revision={feed.revision}
            overview={item.target.startsWith("stygian:") ? <Link href={item.href} prefetch={false} className="min-w-0 break-words rounded-lg py-2 text-sm font-medium outline-none focus-visible:ring-2 focus-visible:ring-ring">
              {item.targetName}
            </Link> : item.targetImage && <Link href={item.href} prefetch={false} className="shrink-0 rounded-lg outline-none focus-visible:ring-2 focus-visible:ring-ring">
              {/* eslint-disable-next-line @next/next/no-img-element */}
              <img src={item.targetImage} alt={`ภาพ Overview ของ ${item.targetName}`} loading="lazy" decoding="async" width={112} height={112} className="size-28 rounded-lg object-contain" />
            </Link>} />)}
        </TableBody>
      </Table>
    </section>}
    {!feed.page.items.length && !feed.busy && !feed.error && <Empty><EmptyHeader><EmptyTitle>ไม่พบความคิดเห็นที่ตรงกัน</EmptyTitle><EmptyDescription>ความคิดเห็นจากทุกไกด์และทุกรอบ Stygian จะแสดงที่นี่</EmptyDescription></EmptyHeader></Empty>}
    {feed.busy && <AdminCommentRowsSkeleton count={feed.page.items.length ? 1 : 3} />}
    {feed.page.nextCursor && <Button variant="outline" disabled={feed.busy} onClick={() => void feed.more()}>ดูความคิดเห็นเพิ่มเติม</Button>}
  </div>;
}