import type { SiteAccount, SiteListItem } from "@umt/contracts";
import { KeyRound, LoaderCircle, RefreshCw, Trash2, UserRound } from "lucide-react";
import { useState } from "react";
import { toast } from "sonner";
import { useDeleteSiteAccount, useLoginHistory, usePutCredentials } from "~/api/sites.ts";
import { ConfirmDialog } from "~/components/console/confirm-dialog.tsx";
import { DetailSection } from "~/components/console/detail-sheet.tsx";
import { EmptyState, ErrorState, LoadingState } from "~/components/console/empty-state.tsx";
import { FormField } from "~/components/console/form-field.tsx";
import { KvList } from "~/components/console/kv-list.tsx";
import { SecretInput } from "~/components/console/secret-input.tsx";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { TechInfo } from "~/components/console/tech-info.tsx";
import { Button } from "~/components/ui/button.tsx";
import { relTime } from "~/components/workbench/release-fields.ts";
import { errorMessage } from "~/lib/api.ts";
import { formatDateTime } from "~/lib/utils.ts";
import type { SiteDialog, useSiteChecks } from "./site-dialogs.tsx";
import { ACCOUNT_OVERALL, AUTH_KIND_LABEL, loginFailureText, REASON_SHORT } from "./site-fields.ts";

// 站点详情"账号":凭证管理(更新 / 刷新登录 / 删除 / Passkey)+ 登录历史

type Checks = ReturnType<typeof useSiteChecks>;

export function SiteAccountsTab({
  site,
  checks,
  onDialog,
}: {
  site: SiteListItem;
  checks: Checks;
  onDialog: (d: SiteDialog) => void;
}) {
  const accounts = site.accounts ?? [];
  if (!accounts.length)
    return (
      <EmptyState
        icon={UserRound}
        title="还没有账号"
        description="填写凭证后，这里显示登录状态和登录历史"
        action={
          <Button size="sm" onClick={() => onDialog({ kind: "credentials", site })}>
            <KeyRound />
            填写凭证
          </Button>
        }
      />
    );
  return (
    <div className="space-y-6 pt-2">
      {accounts.map((a) => (
        <AccountBlock key={a.id} site={site} account={a} checks={checks} onDialog={onDialog} />
      ))}
      <PasskeyForm site={site} label={accounts[0]?.label ?? site.key} has={accounts.some((a) => a.hasPasskey)} />
    </div>
  );
}

function AccountBlock({
  site,
  account: a,
  checks,
  onDialog,
}: {
  site: SiteListItem;
  account: SiteAccount;
  checks: Checks;
  onDialog: (d: SiteDialog) => void;
}) {
  const del = useDeleteSiteAccount();
  const st = ACCOUNT_OVERALL[a.enabled ? a.status : "unconfigured"];
  const busy = checks.isBusy(site.id, "login");
  const loginKind = a.authKind === "passkey" ? undefined : a.authKind;
  return (
    <div className="grid gap-6 lg:grid-cols-[minmax(0,3fr)_minmax(0,2fr)]">
      <section className="pg-slab min-w-0 rounded-xl p-4">
        <div className="mb-3 flex flex-wrap items-start justify-between gap-3">
          <div className="min-w-0">
            <h2 className="text-lead font-semibold text-foreground">账号 · {a.label}</h2>
            <div className="mt-1 flex flex-wrap gap-1.5">
              <StatusBadge tone={st.tone}>{a.enabled ? st.label : "已停用"}</StatusBadge>
              <span className="rounded-full border border-border px-2 py-0.5 text-meta text-muted-foreground">
                {AUTH_KIND_LABEL[a.authKind]}
              </span>
              {a.hasPasskey && a.authKind !== "passkey" ? (
                <span className="rounded-full border border-border px-2 py-0.5 text-meta text-muted-foreground">
                  Passkey
                </span>
              ) : null}
            </div>
          </div>
          <div className="flex flex-wrap gap-2">
            {a.authKind !== "passkey" ? (
              <Button variant="outline" size="sm" disabled={busy} onClick={() => void checks.refreshLogin(site, a)}>
                {busy ? <LoaderCircle className="animate-spin" /> : <RefreshCw />}
                刷新登录
              </Button>
            ) : null}
            <Button
              variant="outline"
              size="sm"
              onClick={() => onDialog({ kind: "credentials", site, account: a, loginKind })}
            >
              <KeyRound />
              更新凭证
            </Button>
            <ConfirmDialog
              trigger={
                <Button variant="ghost" size="sm" className="hover:text-destructive">
                  <Trash2 />
                  删除账号
                </Button>
              }
              title={`删除账号「${a.label}」？`}
              description="账号、凭证和用户数据历史一起删除，不可恢复。站点和资源保留。"
              confirmLabel="删除账号"
              destructive
              onConfirm={async () => {
                try {
                  await del.mutateAsync(a.id);
                  toast.success(`已删除账号「${a.label}」`);
                } catch (err) {
                  toast.error(errorMessage(err, "删除失败"));
                  throw err;
                }
              }}
            />
          </div>
        </div>
        <KvList
          items={[
            { label: "登录名", value: a.loginName },
            { label: "用户名", value: a.userData?.username },
            {
              label: "上次登录",
              value: a.lastLoginAt ? `${relTime(a.lastLoginAt)} · ${formatDateTime(a.lastLoginAt)}` : null,
            },
            { label: "上次验证", value: relTime(a.lastVerifiedAt) },
            {
              label: "二次验证",
              value: a.authKind === "password" ? (a.hasTotp ? "已填 TOTP 密钥" : "未填 TOTP 密钥") : null,
            },
            {
              label: "会话 Cookie",
              value: a.authKind === "password" ? (a.hasSession ? "已保存" : "还没有") : null,
            },
            { label: "User-Agent", value: UA_SOURCE_TEXT[a.userAgentSource], wide: true },
            ...(a.lastError
              ? [
                  {
                    label: `最近错误 · ${relTime(a.lastError.at)}`,
                    value: (
                      <span className="text-warning">
                        {loginFailureText(a.lastError.reason, a.lastError.message, a.authKind).text}
                      </span>
                    ),
                    wide: true,
                  },
                ]
              : []),
          ]}
        />
        <TechInfo
          className="mt-3"
          columns={1}
          items={[
            { label: "当前 User-Agent", value: a.effectiveUserAgent, wide: true },
            {
              label: "仅浏览器使用的 Cookie",
              value: a.browserOnlyCookies.length ? a.browserOnlyCookies.join(", ") : null,
              wide: true,
            },
          ]}
        />
      </section>
      <LoginHistory accountId={a.id} />
    </div>
  );
}

/** 站点请求 UA 的来源(BR-4);原始 UA 在技术信息里 */
const UA_SOURCE_TEXT: Record<SiteAccount["userAgentSource"], string> = {
  browser: "跟随浏览器",
  manual: "手动填写",
  global: "使用设置里的全局 UA",
  pending: "待切换：下次刷新登录，或在原站视图里用过后改为跟随浏览器",
};

const ACTION_LABEL: Record<string, string> = {
  "site_account.login_refreshed": "刷新登录",
  "site_account.login_refresh_requested": "请求刷新登录",
  "site_account.credentials_set": "更新凭证",
  "site_account.created": "添加账号",
  "site_account.updated": "修改账号",
};

function LoginHistory({ accountId }: { accountId: string }) {
  const q = useLoginHistory(accountId);
  const items = (q.data?.items ?? []).filter((e) => e.action in ACTION_LABEL);
  return (
    <DetailSection title="登录历史">
      {q.isPending ? (
        <LoadingState rows={3} />
      ) : q.error ? (
        <ErrorState plain error={q.error} onRetry={() => void q.refetch()} />
      ) : !items.length ? (
        <p className="text-caption text-muted-foreground">还没有记录。刷新登录或更新凭证后出现在这里</p>
      ) : (
        <ol className="space-y-2">
          {items.map((e) => {
            const ok = e.payload.ok;
            const reason = typeof e.payload.reason === "string" ? e.payload.reason : null;
            return (
              <li key={e.id} className="flex items-start justify-between gap-3 text-caption">
                <span className="min-w-0">
                  <span className="text-foreground">{ACTION_LABEL[e.action]}</span>
                  {ok === true ? (
                    <StatusBadge tone="success" className="ml-2">
                      成功
                    </StatusBadge>
                  ) : ok === false ? (
                    <StatusBadge tone="destructive" className="ml-2">
                      {(reason && REASON_SHORT[reason as keyof typeof REASON_SHORT]) || "失败"}
                    </StatusBadge>
                  ) : null}
                </span>
                <time className="shrink-0 text-meta text-muted-foreground" dateTime={e.at} title={formatDateTime(e.at)}>
                  {relTime(e.at)}
                </time>
              </li>
            );
          })}
        </ol>
      )}
    </DetailSection>
  );
}

function PasskeyForm({ site, label, has }: { site: SiteListItem; label: string; has: boolean }) {
  const put = usePutCredentials();
  const [v, setV] = useState("");
  const [err, setErr] = useState<string | null>(null);
  return (
    <form
      className="pg-slab max-w-xl rounded-xl p-4"
      noValidate
      onSubmit={async (e) => {
        e.preventDefault();
        if (!v.trim()) {
          setErr(has ? "填写新的 Passkey 再保存" : "填写 Passkey");
          return;
        }
        setErr(null);
        try {
          await put.mutateAsync({ siteId: site.id, body: { kind: "passkey", label, passkey: v.trim() } });
          setV("");
          toast.success("Passkey 已保存");
        } catch (error) {
          toast.error(errorMessage(error, "保存失败"));
        }
      }}
    >
      <h2 className="text-lead font-semibold text-foreground">站点 Passkey</h2>
      <p className="mb-3 text-caption text-muted-foreground">
        用于 RSS 和下载链接，不参与登录。{has ? "填写新值保存会替换。" : "还没有保存。"}
      </p>
      <div className="flex flex-wrap items-start gap-2">
        <FormField label="Passkey" htmlFor="pk" error={err} className="min-w-0 flex-1">
          <SecretInput
            id="pk"
            label="Passkey"
            value={v}
            isSet={has}
            invalid={!!err}
            onChange={setV}
            disabled={put.isPending}
          />
        </FormField>
        <Button type="submit" size="sm" className="mt-6" disabled={put.isPending}>
          {put.isPending ? <LoaderCircle className="animate-spin" /> : null}
          保存 Passkey
        </Button>
      </div>
    </form>
  );
}