import type { ResolutionStatus, WorkbenchRelease } from "@umt/contracts";
import {
  Activity,
  ArrowLeft,
  Bot,
  Camera,
  Globe,
  LoaderCircle,
  Plus,
  Radar,
  RefreshCw,
  SearchX,
  TriangleAlert,
} from "lucide-react";
import { useEffect, useMemo, useState } from "react";
import { Link, useNavigate, useParams, useSearchParams } from "react-router";
import { toast } from "sonner";
import { useInventory } from "~/api/inventory.ts";
import { type ReleaseFilters, useSiteReleases } from "~/api/releases.ts";
import { snapshotStale, useSites, useSnapshotSite } from "~/api/sites.ts";
import { openAgentDrawer } from "~/components/agent/agent-store.ts";
import { SiteOriginPanel } from "~/components/browser/desktop-view.tsx";
import { DetailSection } from "~/components/console/detail-sheet.tsx";
import { EmptyState, ErrorState, LoadingState } from "~/components/console/empty-state.tsx";
import { FilterBar, FilterSelect } from "~/components/console/filter-bar.tsx";
import { consolePath } from "~/components/console/nav.ts";
import { PageHeader } from "~/components/console/page-header.tsx";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { SiteAccountsTab } from "~/components/sites/site-accounts-tab.tsx";
import { SiteMoreMenu } from "~/components/sites/site-card.tsx";
import { type SiteDialog, SiteDialogHost, useSiteChecks } from "~/components/sites/site-dialogs.tsx";
import { ACCOUNT_OVERALL, healthLine, hostOf, overallStatus, primaryAccount } from "~/components/sites/site-fields.ts";
import { SiteOverview } from "~/components/sites/site-overview.tsx";
import { Button } from "~/components/ui/button.tsx";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "~/components/ui/tabs.tsx";
import { FeedTable } from "~/components/workbench/feed-table.tsx";
import { ReleaseDetailSheet } from "~/components/workbench/release-detail-sheet.tsx";
import { categoryLabel, circuitLabel, hrOf, isFree, relTime } from "~/components/workbench/release-fields.ts";
import { ReleaseRow } from "~/components/workbench/release-list.tsx";
import { SnapshotPanel } from "~/components/workbench/snapshot-panel.tsx";
import { errorMessage } from "~/lib/api.ts";

const PROMOS = [
  { value: "free", label: "免费" },
  { value: "2xfree", label: "2x 免费" },
  { value: "50%", label: "50%" },
  { value: "30%", label: "30%" },
  { value: "2x", label: "2x 上传" },
];
const RESOLUTION: { value: ResolutionStatus; label: string }[] = [
  { value: "resolved", label: "已识别" },
  { value: "unresolved", label: "待识别" },
  { value: "ambiguous", label: "有歧义" },
  { value: "unidentifiable", label: "无法识别" },
];
const SIZE = [
  { value: "lt5", label: "< 5 GB" },
  { value: "5to20", label: "5–20 GB" },
  { value: "20to60", label: "20–60 GB" },
  { value: "gt60", label: "> 60 GB" },
];
const AGE = [
  { value: "1", label: "24 小时内" },
  { value: "7", label: "7 天内" },
  { value: "30", label: "30 天内" },
];
const GB = 1024 ** 3;

/** 服务端不支持的维度(H&R/做种/大小/上传时间)在已加载结果里筛选,界面上写明 */
type LocalFilters = { hr: string; seeding: string; size: string; age: string };

function localMatch(r: WorkbenchRelease, f: LocalFilters, now: number) {
  if (f.hr === "no" && hrOf(r) !== "no") return false;
  if (f.hr === "yes" && hrOf(r) !== "yes") return false;
  if (f.seeding === "alive" && !(r.seeders && r.seeders > 0)) return false;
  if (f.seeding === "hot" && !(r.seeders && r.seeders >= 20)) return false;
  if (f.size) {
    const s = r.sizeBytes;
    if (s === null) return false;
    if (f.size === "lt5" && s >= 5 * GB) return false;
    if (f.size === "5to20" && (s < 5 * GB || s >= 20 * GB)) return false;
    if (f.size === "20to60" && (s < 20 * GB || s >= 60 * GB)) return false;
    if (f.size === "gt60" && s < 60 * GB) return false;
  }
  if (f.age) {
    const t = r.sourcePublishedAt ? new Date(r.sourcePublishedAt).getTime() : null;
    if (t === null || now - t > Number(f.age) * 86_400_000) return false;
  }
  return true;
}

function useDebounced<T>(value: T, ms = 400) {
  const [v, setV] = useState(value);
  useEffect(() => {
    const t = setTimeout(() => setV(value), ms);
    return () => clearTimeout(t);
  }, [value, ms]);
  return v;
}

const TABS = ["overview", "resources", "origin", "snapshots", "accounts"] as const;
/** 旧页签(整理视图)落到"资源" */
const LEGACY_TAB: Record<string, string> = { organized: "resources" };

export const meta = () => [{ title: "站点 · UHD 媒体自动化控制台" }];

export default function SiteWorkbenchPage() {
  const { siteId = "" } = useParams();
  const [params, setParams] = useSearchParams();
  const navigate = useNavigate();
  const rawTab = params.get("tab") ?? "";
  const mapped = LEGACY_TAB[rawTab] ?? rawTab;
  const tab = (TABS as readonly string[]).includes(mapped) ? mapped : "overview";
  const [creatingFeed, setCreatingFeed] = useState(false);
  const [dialog, setDialog] = useState<SiteDialog | null>(null);
  const checks = useSiteChecks(setDialog);
  const sites = useSites();
  const snap = useSnapshotSite();

  const [qInput, setQInput] = useState("");
  const q = useDebounced(qInput.trim());
  const [category, setCategory] = useState("");
  const [promotion, setPromotion] = useState("");
  const [resolution, setResolution] = useState("");
  const [local, setLocal] = useState<LocalFilters>({ hr: "", seeding: "", size: "", age: "" });
  const [live, setLive] = useState(false);
  const [openId, setOpenId] = useState<string | null>(null);

  const filters: ReleaseFilters = {
    q: q || undefined,
    category: category || undefined,
    promotion: promotion || undefined,
    resolution: (resolution || undefined) as ResolutionStatus | undefined,
  };
  const releases = useSiteReleases(tab === "resources" ? siteId : "", filters, live);
  // 实时补查只对当前搜索生效一次
  // biome-ignore lint/correctness/useExhaustiveDependencies: 条件变化时回到快照优先
  useEffect(() => setLive(false), [q, category, promotion, resolution]);

  const pages = releases.data?.pages ?? [];
  const all = useMemo(() => pages.flatMap((p) => p.items), [pages]);
  const coverage = pages[0]?.coverage;
  const now = Date.now();
  const rows = all.filter((r) => localMatch(r, local, now));
  const localActive = Object.values(local).some(Boolean);
  const inventory = useInventory(all.flatMap((r) => (r.entity ? [r.entity.id] : [])));
  const categories = useMemo(() => {
    const m = new Map<string, string>();
    for (const r of all) if (r.categoryRaw) m.set(r.categoryRaw, categoryLabel(r) ?? r.categoryRaw);
    if (category && !m.has(category)) m.set(category, category);
    return [...m].map(([value, label]) => ({ value, label }));
  }, [all, category]);

  const s = sites.data?.items.find((x) => x.id === siteId);
  const refreshFailed = !!releases.error && !!releases.data;
  // 刷新失败时整页数据都标过期;否则早于 2 个快照周期确认的条目标过期
  const staleBefore = refreshFailed ? now + 1 : s ? now - (s.snapshotIntervalSec ?? 3600) * 2000 : null;
  const selected = all.find((r) => r.id === openId) ?? null;
  const freeCount = all.filter(isFree).length;

  const reset = () => {
    setQInput("");
    setCategory("");
    setPromotion("");
    setResolution("");
    setLocal({ hr: "", seeding: "", size: "", age: "" });
  };
  const anyFilter = !!(qInput || category || promotion || resolution || localActive);

  if (sites.error && !sites.data) return <ErrorState error={sites.error} onRetry={() => void sites.refetch()} />;
  if (sites.data && !s)
    return (
      <EmptyState
        icon={Globe}
        title="站点不存在或已删除"
        description="回到站点页查看现有站点"
        action={
          <Button asChild size="sm" variant="outline">
            <Link to={consolePath("sites")}>
              <ArrowLeft />
              返回站点
            </Link>
          </Button>
        }
      />
    );

  const account = s ? ACCOUNT_OVERALL[overallStatus(s)] : null;
  const health = s ? healthLine(s.lastHealth, s.lastHealthAt) : null;
  const circuit = s ? circuitLabel(s) : null;
  const hasAccount = !!s?.accounts?.some((a) => a.enabled && a.authKind !== "passkey");

  return (
    <>
      <PageHeader
        title={s?.name ?? "站点"}
        description={
          s ? (
            <span className="flex flex-wrap items-center gap-1.5">
              <a
                href={s.baseUrl}
                target="_blank"
                rel="noreferrer noopener"
                className="text-meta text-muted-foreground hover:text-foreground hover:underline"
              >
                {hostOf(s.baseUrl)}
              </a>
              {account ? <StatusBadge tone={account.tone}>账号{account.label}</StatusBadge> : null}
              {health ? <StatusBadge tone={health.tone}>健康 {health.text}</StatusBadge> : null}
              {!s.enabled ? <StatusBadge tone="warning">站点已停用，只显示历史数据</StatusBadge> : null}
              {circuit ? <StatusBadge tone="warning">{circuit}</StatusBadge> : null}
              {s.snapshotEnabled && snapshotStale(s) ? <StatusBadge tone="warning">快照过期</StatusBadge> : null}
            </span>
          ) : (
            "加载中…"
          )
        }
        actions={
          <>
            <Button asChild variant="ghost" size="sm">
              <Link to={consolePath("sites")}>
                <ArrowLeft />
                站点
              </Link>
            </Button>
            {s ? (
              <>
                <Button
                  variant="outline"
                  size="sm"
                  disabled={!s.enabled || checks.isBusy(s.id, "health")}
                  onClick={() => void checks.checkHealth(s)}
                >
                  {checks.isBusy(s.id, "health") ? <LoaderCircle className="animate-spin" /> : <Activity />}
                  <span className="sr-only sm:not-sr-only">检测健康</span>
                </Button>
                <Button
                  variant="outline"
                  size="sm"
                  disabled={!hasAccount || checks.isBusy(s.id, "login")}
                  title={hasAccount ? undefined : "先填写凭证"}
                  onClick={() => void checks.refreshLogin(s, primaryAccount(s.accounts))}
                >
                  {checks.isBusy(s.id, "login") ? <LoaderCircle className="animate-spin" /> : <RefreshCw />}
                  <span className="sr-only sm:not-sr-only">刷新登录</span>
                </Button>
                <SiteMoreMenu site={s} onDialog={setDialog} />
              </>
            ) : null}
            <Button
              variant="ghost"
              size="sm"
              onClick={() => openAgentDrawer({ label: `站点：${s?.name ?? siteId}`, siteId })}
            >
              <Bot />
              <span className="sr-only sm:not-sr-only">问 Agent</span>
            </Button>
          </>
        }
      />

      <Tabs
        value={tab}
        onValueChange={(v) =>
          setParams(
            (p) => {
              if (v === "overview") p.delete("tab");
              else p.set("tab", v);
              return p;
            },
            { replace: true },
          )
        }
      >
        <TabsList aria-label="站点分节">
          <TabsTrigger value="overview">概览</TabsTrigger>
          <TabsTrigger value="resources">资源</TabsTrigger>
          <TabsTrigger value="origin">原站视图</TabsTrigger>
          <TabsTrigger value="snapshots">快照与 Feed</TabsTrigger>
          <TabsTrigger value="accounts">账号</TabsTrigger>
        </TabsList>

        <TabsContent value="overview">{s ? <SiteOverview site={s} /> : <LoadingState rows={4} />}</TabsContent>

        <TabsContent value="resources">
          <FilterBar
            search={{ value: qInput, onChange: setQInput, placeholder: "搜索标题 / 副标题 / 站点 ID" }}
            onReset={anyFilter ? reset : undefined}
            actions={
              <>
                <Button
                  variant="outline"
                  size="sm"
                  disabled={!s?.enabled || snap.isPending}
                  title="手动快照（受站点限流）"
                  onClick={() =>
                    snap.mutate(
                      { id: siteId, maxPages: 2 },
                      {
                        onSuccess: () => toast.success("快照已排队"),
                        onError: (e) => toast.error(errorMessage(e)),
                      },
                    )
                  }
                >
                  <Camera />
                  快照
                </Button>
                <Button
                  size="sm"
                  disabled={!q || !s?.enabled || (live && releases.isFetching)}
                  title={q ? "跳过本地快照，直接在站点搜索" : "先输入搜索词"}
                  onClick={() => {
                    if (live) void releases.refetch();
                    else setLive(true);
                  }}
                >
                  <Radar className={live && releases.isFetching ? "animate-pulse" : undefined} />
                  实时补查
                </Button>
              </>
            }
          >
            <FilterSelect label="分类" value={category} onChange={setCategory} options={categories} />
            <FilterSelect label="促销" value={promotion} onChange={setPromotion} options={PROMOS} />
            <FilterSelect label="识别" value={resolution} onChange={setResolution} options={RESOLUTION} />
            <FilterSelect
              label="H&R"
              value={local.hr}
              onChange={(v) => setLocal((l) => ({ ...l, hr: v }))}
              options={[
                { value: "no", label: "无 H&R" },
                { value: "yes", label: "有 H&R" },
              ]}
            />
            <FilterSelect
              label="做种"
              value={local.seeding}
              onChange={(v) => setLocal((l) => ({ ...l, seeding: v }))}
              options={[
                { value: "alive", label: "有人做种" },
                { value: "hot", label: "≥ 20 做种" },
              ]}
            />
            <FilterSelect
              label="大小"
              value={local.size}
              onChange={(v) => setLocal((l) => ({ ...l, size: v }))}
              options={SIZE}
            />
            <FilterSelect
              label="上传"
              value={local.age}
              onChange={(v) => setLocal((l) => ({ ...l, age: v }))}
              options={AGE}
            />
          </FilterBar>

          {coverage || refreshFailed ? (
            <CoverageBanner coverage={coverage} refreshError={refreshFailed ? releases.error : null} />
          ) : null}

          <div className="pg-slab min-w-0 overflow-hidden rounded-xl">
            {releases.isPending ? (
              <LoadingState rows={6} className="p-4" />
            ) : releases.error && !releases.data ? (
              <ErrorState plain title="读取资源失败" error={releases.error} onRetry={() => void releases.refetch()} />
            ) : rows.length === 0 ? (
              <EmptyState
                plain
                icon={all.length ? SearchX : Globe}
                title={
                  all.length ? "已加载的结果里没有符合筛选的资源" : q ? "本地快照里没有匹配的资源" : "还没有快照数据"
                }
                description={
                  all.length
                    ? "H&R、做种、大小、上传时间只筛选已加载的结果。加载更多或放宽条件。"
                    : coverage?.liveError
                      ? `实时补查失败(${coverage.liveError})，站点上可能仍有该资源。`
                      : q
                        ? "点「实时补查」直接在站点搜索。"
                        : "点「快照」抓取站点列表。"
                }
              />
            ) : (
              <>
                <div className="flex flex-wrap items-center gap-x-3 gap-y-1 border-b border-border/60 px-4 py-2 text-meta text-muted-foreground">
                  <span>
                    已加载 {all.length} 条{localActive ? `，本地筛选后 ${rows.length} 条` : ""}
                  </span>
                  {freeCount ? <span>其中免费 {freeCount}</span> : null}
                  {releases.isFetching && !releases.isFetchingNextPage ? <span>刷新中…</span> : null}
                </div>
                <ul className="divide-y divide-border/60">
                  {rows.map((r) => (
                    <ReleaseRow
                      key={r.id}
                      r={r}
                      entry={r.entity ? inventory.data?.get(r.entity.id) : undefined}
                      inventoryLoading={inventory.isLoading}
                      staleBefore={staleBefore}
                      selected={openId === r.id}
                      onOpen={() => setOpenId(r.id)}
                    />
                  ))}
                </ul>
              </>
            )}
            {releases.hasNextPage ? (
              <div className="flex justify-center border-t border-border/60 px-4 py-3">
                <Button
                  variant="outline"
                  size="sm"
                  onClick={() => void releases.fetchNextPage()}
                  disabled={releases.isFetchingNextPage}
                >
                  {releases.isFetchingNextPage ? "加载中…" : "加载更多"}
                </Button>
              </div>
            ) : null}
          </div>
        </TabsContent>

        <TabsContent value="origin">{s ? <SiteOriginPanel site={s} /> : <LoadingState rows={4} />}</TabsContent>

        <TabsContent value="snapshots">
          <div className="space-y-8">
            {s ? <SnapshotPanel site={s} /> : <LoadingState rows={3} />}
            <DetailSection
              title="Feed"
              actions={
                <Button size="sm" variant="outline" onClick={() => setCreatingFeed(true)}>
                  <Plus />
                  新建 Feed
                </Button>
              }
            >
              <FeedTable siteId={siteId} creating={creatingFeed} onCreatingChange={setCreatingFeed} />
            </DetailSection>
          </div>
        </TabsContent>

        <TabsContent value="accounts">
          {s ? <SiteAccountsTab site={s} checks={checks} onDialog={setDialog} /> : <LoadingState rows={3} />}
        </TabsContent>
      </Tabs>

      <SiteDialogHost
        dialog={dialog}
        onClose={() => setDialog(null)}
        onDeleted={() => navigate(consolePath("sites"))}
      />

      <ReleaseDetailSheet
        siteId={siteId}
        release={selected}
        entry={selected?.entity ? inventory.data?.get(selected.entity.id) : undefined}
        onClose={() => setOpenId(null)}
      />
    </>
  );
}

function CoverageBanner({
  coverage,
  refreshError,
}: {
  coverage: import("@umt/contracts").WorkbenchCoverage | undefined;
  refreshError: unknown;
}) {
  const notes: { tone: "warning" | "neutral" | "success"; text: string }[] = [];
  if (refreshError) notes.push({ tone: "warning", text: `刷新失败，显示上次数据：${errorMessage(refreshError)}` });
  if (coverage) {
    if (!coverage.siteEnabled) notes.push({ tone: "warning", text: "站点已停用，只显示历史数据" });
    if (coverage.stale)
      notes.push({
        tone: "warning",
        text: coverage.lastSnapshotAt
          ? `快照已过期（上次 ${relTime(coverage.lastSnapshotAt)}）`
          : "没有快照，列表只来自 Feed 和实时补查",
      });
    if (coverage.liveError) notes.push({ tone: "warning", text: `实时补查失败：${coverage.liveError}` });
    else if (coverage.live)
      notes.push({ tone: "success", text: coverage.coalesced ? "已合并到进行中的同一搜索" : "已实时补查" });
  }
  if (!notes.length) return null;
  return (
    <div className="mb-3 space-y-1.5">
      {notes.map((n) => (
        <p
          key={n.text}
          className={
            n.tone === "warning"
              ? "flex items-start gap-2 rounded-lg border border-warning/40 bg-warning/10 px-3 py-2 text-caption text-warning"
              : n.tone === "success"
                ? "flex items-start gap-2 rounded-lg border border-success/30 bg-success/10 px-3 py-2 text-caption text-success"
                : "rounded-lg border border-border px-3 py-2 text-caption text-muted-foreground"
          }
        >
          {n.tone === "warning" ? <TriangleAlert className="mt-0.5 h-3.5 w-3.5 shrink-0" /> : null}
          <span className="min-w-0 break-words">{n.text}</span>
        </p>
      ))}
    </div>
  );
}