import { useState } from "react";
import { Eye, EyeOff, Trash2 } from "lucide-react";
import {
  useAdminComments,
  useAdminChatMessages,
  useAdminCommentModerate,
  useAdminCommentDelete,
  type AdminCommentRow,
  type AdminChatMessageRow,
} from "~/requestHandler/use-admin-hooks";
import {
  AdminTable,
  AdminPagination,
  AdminToolbar,
  AdminSearch,
  AdminSelect,
  AdminPageTitle,
  StatusBadge,
  faDate,
  useDebouncedValue,
  type Column,
} from "~/components/admin/DataTable";
import { cn } from "~/lib/utils";

const PAGE_SIZE = 25;

export default function AdminModeration() {
  const [tab, setTab] = useState<"comments" | "chat">("comments");
  return (
    <div>
      <AdminPageTitle>مدیریت محتوا</AdminPageTitle>
      <div className="flex gap-1 mb-5 border-b border-WHITE3">
        {(["comments", "chat"] as const).map((t) => (
          <button
            key={t}
            onClick={() => setTab(t)}
            className={cn(
              "px-4 py-2 text-[13.5px] font-semibold border-b-2 -mb-px transition-colors",
              tab === t ? "border-BLACK text-BLACK" : "border-transparent text-GRAY hover:text-BLACK2"
            )}
          >
            {t === "comments" ? "نظرات" : "گفتگوها"}
          </button>
        ))}
      </div>
      {tab === "comments" ? <CommentsTab /> : <ChatTab />}
    </div>
  );
}

function CommentsTab() {
  const [page, setPage] = useState(1);
  const [search, setSearch] = useState("");
  const [hidden, setHidden] = useState("");
  const [kind, setKind] = useState("");
  const debouncedSearch = useDebouncedValue(search);

  const { data, isLoading } = useAdminComments({
    page,
    page_size: PAGE_SIZE,
    search: debouncedSearch,
    is_hidden: hidden,
    kind,
  });
  const moderate = useAdminCommentModerate();
  const del = useAdminCommentDelete();

  const reset = (fn: () => void) => {
    fn();
    setPage(1);
  };

  const onDelete = (r: AdminCommentRow) => {
    if (confirm("حذف این نظر؟ این عمل بازگشت‌پذیر نیست.")) del.mutate(r.id);
  };

  const columns: Column<AdminCommentRow>[] = [
    {
      header: "نظر",
      render: (r) => (
        <div className="max-w-[340px]">
          <p className={cn("text-[13px] break-words", r.isHidden && "text-GRAY line-through")}>
            {r.comment}
          </p>
          <p className="text-GRAY text-[11px] mt-0.5 truncate">
            {r.productTitle || "—"}
            {r.isReply && <span className="text-VITROWN_BLUE"> · پاسخ</span>}
            {!r.isReply && r.repliesCount > 0 && <span> · {r.repliesCount} پاسخ</span>}
          </p>
        </div>
      ),
    },
    {
      header: "کاربر",
      render: (r) => (
        <span className="text-GRAY text-[11px] tabular-nums" dir="ltr">
          {r.userPhone || "—"}
        </span>
      ),
    },
    {
      header: "وضعیت",
      render: (r) =>
        r.isHidden ? (
          <StatusBadge label="پنهان" tone="red" />
        ) : (
          <StatusBadge label="نمایش" tone="green" />
        ),
    },
    { header: "تاریخ", render: (r) => <span className="text-GRAY whitespace-nowrap">{faDate(r.createdAt)}</span> },
    {
      header: "",
      render: (r) => (
        <div className="flex items-center gap-1 justify-end">
          <button
            onClick={() => moderate.mutate({ id: r.id, isHidden: !r.isHidden })}
            className="grid h-8 w-8 place-items-center rounded-lg border border-WHITE3 hover:bg-WHITE2"
            aria-label={r.isHidden ? "نمایش" : "پنهان کردن"}
            title={r.isHidden ? "نمایش" : "پنهان کردن"}
          >
            {r.isHidden ? <Eye size={14} /> : <EyeOff size={14} />}
          </button>
          <button
            onClick={() => onDelete(r)}
            className="grid h-8 w-8 place-items-center rounded-lg border border-WHITE3 text-RED hover:bg-RED/5"
            aria-label="حذف"
          >
            <Trash2 size={14} />
          </button>
        </div>
      ),
    },
  ];

  return (
    <div>
      <AdminToolbar>
        <AdminSearch value={search} onChange={(v) => reset(() => setSearch(v))} placeholder="جستجوی متن نظر / کاربر…" />
        <AdminSelect
          value={hidden}
          onChange={(v) => reset(() => setHidden(v))}
          options={[
            { value: "", label: "همه" },
            { value: "false", label: "نمایش‌داده‌شده" },
            { value: "true", label: "پنهان‌شده" },
          ]}
        />
        <AdminSelect
          value={kind}
          onChange={(v) => reset(() => setKind(v))}
          options={[
            { value: "", label: "همه" },
            { value: "top", label: "نظر اصلی" },
            { value: "reply", label: "پاسخ" },
          ]}
        />
      </AdminToolbar>
      <AdminTable columns={columns} rows={data?.results || []} isLoading={isLoading} getRowKey={(r) => r.id} emptyText="نظری ثبت نشده است" />
      <AdminPagination page={page} pageSize={PAGE_SIZE} count={data?.count || 0} onPageChange={setPage} />
    </div>
  );
}

function ChatTab() {
  const [page, setPage] = useState(1);
  const [search, setSearch] = useState("");
  const [deleted, setDeleted] = useState("");
  const debouncedSearch = useDebouncedValue(search);

  const { data, isLoading } = useAdminChatMessages({
    page,
    page_size: PAGE_SIZE,
    search: debouncedSearch,
    is_deleted: deleted,
  });

  const reset = (fn: () => void) => {
    fn();
    setPage(1);
  };

  const columns: Column<AdminChatMessageRow>[] = [
    {
      header: "پیام",
      render: (r) => (
        <div className="max-w-[360px]">
          <p className={cn("text-[13px] break-words", r.isDeleted && "text-GRAY line-through")}>
            {r.content || (r.imageUrl ? "🖼 تصویر" : "—")}
          </p>
        </div>
      ),
    },
    {
      header: "فرستنده",
      render: (r) => (
        <span className="text-GRAY text-[11px] tabular-nums" dir="ltr">
          {r.senderPhone || "—"}
        </span>
      ),
    },
    {
      header: "وضعیت",
      render: (r) =>
        r.isDeleted ? <StatusBadge label="حذف‌شده" tone="gray" /> : <StatusBadge label="فعال" tone="green" />,
    },
    { header: "تاریخ", render: (r) => <span className="text-GRAY whitespace-nowrap">{faDate(r.createdAt)}</span> },
  ];

  return (
    <div>
      <AdminToolbar>
        <AdminSearch value={search} onChange={(v) => reset(() => setSearch(v))} placeholder="جستجوی متن پیام / فرستنده…" />
        <AdminSelect
          value={deleted}
          onChange={(v) => reset(() => setDeleted(v))}
          options={[
            { value: "", label: "همه" },
            { value: "false", label: "فعال" },
            { value: "true", label: "حذف‌شده" },
          ]}
        />
      </AdminToolbar>
      <p className="text-GRAY text-[12px] mb-2">مشاهده‌ی فقط‌خواندنی گفتگوها.</p>
      <AdminTable columns={columns} rows={data?.results || []} isLoading={isLoading} getRowKey={(r) => r.id} emptyText="پیامی یافت نشد" />
      <AdminPagination page={page} pageSize={PAGE_SIZE} count={data?.count || 0} onPageChange={setPage} />
    </div>
  );
}