import type { SiteListItem } from "@umt/contracts";
import { Link } from "react-router";
import { useFeeds } from "~/api/feeds.ts";
import { accessSummary, useSiteFailureSamples, useSiteRequestStats, useSiteUserData } from "~/api/sites.ts";
import { DetailSection } from "~/components/console/detail-sheet.tsx";
import { ErrorState, LoadingState } from "~/components/console/empty-state.tsx";
import { KvList } from "~/components/console/kv-list.tsx";
import { consolePath } from "~/components/console/nav.ts";
import { StatTile } from "~/components/console/stat-tile.tsx";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { TechInfo } from "~/components/console/tech-info.tsx";
import { relTime } from "~/components/workbench/release-fields.ts";
import { SiteFailureSamples } from "./site-failure-samples.tsx";
import {
  ACCOUNT_OVERALL,
  AUTH_KIND_LABEL,
  bytes,
  cloudflareLine,
  cloudflareTechItems,
  dataAccount,
  hasLogin,
  healthLine,
  healthMessage,
  healthTechItems,
  kindLabel,
  overallStatus,
  primaryAccount,
  rateLimitText,
  ratioText,
  siteCan,
} from "./site-fields.ts";
import { UserDataChart } from "./user-data-chart.tsx";

/** Cloudflare 状态行(CF-2);需要你验证时给原站视图入口 */
function cloudflareRow(site: SiteListItem) {
  const cf = cloudflareLine(site.config);
  if (!cf) return [];
  const text = cf.text.replace(/^Cloudflare：/, "");
  return [
    {
      label: "Cloudflare",
      value: cf.takeover ? (
        <span>
          <span className="text-warning">{text}</span>
          <Link className="ml-2 text-meta underline" to={`${consolePath("sites", site.id)}?tab=origin`}>
            去原站视图
          </Link>
        </span>
      ) : (
        text
      ),
    },
  ];
}

const CAP_LABEL = [
  ["search", "搜索"],
  ["list", "列表抓取"],
  ["rss", "RSS"],
  ["detail", "详情页"],
  ["login", "登录"],
  ["userinfo", "账号数据"],
] as const;

/** 可用的获取方式:"搜索 · 列表抓取 · RSS" */
export function capabilityText(site: Pick<SiteListItem, "capabilities">): string {
  const on = CAP_LABEL.filter(([c]) => siteCan(site, c)).map(([, l]) => l);
  return on.length ? on.join(" · ") : "—";
}

/** 站点详情"概览":账号数据磁贴 + 30 天趋势 + 状态;没有登录的站点(公开 BT、自定义 RSS 源)只看 RSS */
export function SiteOverview({ site }: { site: SiteListItem }) {
  return hasLogin(site) ? <AccountSiteOverview site={site} /> : <FeedSiteOverview site={site} />;
}

function FeedSiteOverview({ site }: { site: SiteListItem }) {
  const feeds = useFeeds({ siteId: site.id });
  const stats = useSiteRequestStats(site.id);
  const items = feeds.data?.items ?? [];
  const enabled = items.filter((f) => f.enabled);
  const failing = enabled.filter((f) => f.healthStatus === "failing" || f.healthStatus === "circuit_open").length;
  const lastOk = items
    .map((f) => f.lastSuccessAt)
    .filter((x): x is string => !!x)
    .sort()
    .at(-1);
  return (
    <div className="space-y-6 pt-2">
      <div className="grid grid-cols-2 gap-3 sm:grid-cols-4">
        <StatTile
          label="RSS"
          value={feeds.data ? items.length : "—"}
          hint={items.length !== enabled.length ? `${enabled.length} 个启用` : undefined}
        />
        <StatTile label="抓取失败" value={feeds.data ? failing || "—" : "—"} />
        <StatTile label="上次成功" value={relTime(lastOk)} />
        <StatTile label="近 24 小时请求" value={stats.data ? stats.data.last24h : "—"} />
      </div>
      <DetailSection title="站点">
        <KvList
          columns={1}
          items={[
            { label: "类型", value: kindLabel(site.kind) },
            { label: "获取方式", value: capabilityText(site) },
            { label: "限流", value: rateLimitText(site.rateLimit) },
            { label: "代理", value: site.proxy ? "使用" : "不使用" },
          ]}
        />
      </DetailSection>
    </div>
  );
}

function AccountSiteOverview({ site }: { site: SiteListItem }) {
  const dAcc = dataAccount(site.accounts);
  const acc = primaryAccount(site.accounts);
  const u = dAcc?.userData ?? null;
  const history = useSiteUserData(site.id, dAcc?.id, 30);
  const stats = useSiteRequestStats(site.id);
  const samples = useSiteFailureSamples(site.id).data?.items ?? [];
  const st = ACCOUNT_OVERALL[overallStatus(site)];
  const h = healthLine(site.lastHealth, site.lastHealthAt);

  return (
    <div className="space-y-6 pt-2">
      <div className="grid grid-cols-2 gap-3 sm:grid-cols-3 lg:grid-cols-6">
        <StatTile label="上传" value={bytes(u?.upload)} />
        <StatTile label="下载" value={bytes(u?.download)} />
        <StatTile label="分享率" value={ratioText(u)} />
        <StatTile label="等级" value={u?.userLevel ?? "—"} />
        <StatTile label="做种" value={u ? u.seeding : "—"} hint={u?.seedingSize ? bytes(u.seedingSize) : undefined} />
        <StatTile
          label={u?.bonus !== null && u?.bonus !== undefined ? "魔力" : "未读消息"}
          value={
            u
              ? u.bonus !== null
                ? u.bonus.toLocaleString("zh-CN", { maximumFractionDigits: 1 })
                : u.messageUnread || "—"
              : "—"
          }
          hint={u && u.bonus !== null && u.messageUnread ? `${u.messageUnread} 条未读` : undefined}
        />
      </div>

      <div className="grid gap-6 lg:grid-cols-[minmax(0,2fr)_minmax(0,1fr)]">
        <section className="pg-slab min-w-0 rounded-xl p-4">
          <div className="mb-3 flex flex-wrap items-baseline justify-between gap-2">
            <h2 className="text-lead font-semibold text-foreground">近 30 天</h2>
            <span className="text-meta text-muted-foreground">
              {dAcc ? `账号 ${dAcc.label} · 数据 ${relTime(dAcc.userDataAt)}` : "没有账号数据"}
            </span>
          </div>
          {history.isPending && dAcc ? (
            <LoadingState rows={4} />
          ) : history.error ? (
            <ErrorState plain title="读取历史失败" error={history.error} onRetry={() => void history.refetch()} />
          ) : (
            <UserDataChart points={history.data?.items ?? []} />
          )}
        </section>

        <div className="space-y-6">
          <DetailSection title="账号">
            <KvList
              columns={1}
              items={[
                { label: "状态", value: <StatusBadge tone={st.tone}>{st.label}</StatusBadge> },
                { label: "凭证", value: acc ? AUTH_KIND_LABEL[acc.authKind] : "未配置" },
                { label: "用户名", value: u?.username ?? acc?.loginName },
                { label: "上次登录", value: relTime(acc?.lastLoginAt) },
                ...(acc?.lastError && acc.status !== "active"
                  ? [{ label: "最近错误", value: <span className="text-warning">{acc.lastError.message}</span> }]
                  : []),
              ]}
            />
          </DetailSection>
          <DetailSection title="站点">
            <KvList
              columns={1}
              items={[
                {
                  label: "健康检测",
                  value: (
                    <span>
                      {h.text}
                      {healthMessage(site.lastHealth) ? (
                        <span className="block text-meta text-muted-foreground">{healthMessage(site.lastHealth)}</span>
                      ) : null}
                    </span>
                  ),
                },
                {
                  label: "抓取",
                  value: site.snapshotEnabled
                    ? `${site.lastSnapshotAt ? relTime(site.lastSnapshotAt) : "还没抓取过"} · ${site.snapshotIntervalSec ? `每 ${Math.round(site.snapshotIntervalSec / 60)} 分钟` : "默认周期"}`
                    : "未开启",
                },
                { label: "限流", value: rateLimitText(site.rateLimit) },
                {
                  label: "近 24 小时请求",
                  value: stats.data ? (
                    <span>
                      {stats.data.last24h} 次
                      <span className="block text-meta text-muted-foreground">{accessSummary(stats.data)}</span>
                    </span>
                  ) : (
                    "—"
                  ),
                },
                { label: "代理", value: site.proxy ? "使用" : "不使用" },
                ...cloudflareRow(site),
                ...(site.kind && site.kind !== "pt" ? [{ label: "类型", value: kindLabel(site.kind) }] : []),
                { label: "获取方式", value: capabilityText(site) },
              ]}
            />
            <TechInfo
              className="mt-2"
              columns={1}
              items={[...healthTechItems(site.lastHealth), ...cloudflareTechItems(site.config)]}
            >
              {samples.length ? <SiteFailureSamples siteId={site.id} items={samples} /> : null}
            </TechInfo>
          </DetailSection>
        </div>
      </div>
    </div>
  );
}