feat: add user token distribution tab

app/detail/[...slug]/page.tsx

@@ -1,15 +1,16 @@
 "use client";
 
-import { useEffect, useState, useCallback, startTransition } from "react";
+import { Fragment, useEffect, useState, useCallback, startTransition } from "react";
 import { useParams } from "next/navigation";
 import { motion } from "motion/react";
-import { ArrowLeft, Hash, Zap, DollarSign, MessageSquare, DatabaseZap, BookOpen, ArrowUpDown, ArrowDown, ArrowUp } from "lucide-react";
+import { ArrowLeft, Hash, Zap, DollarSign, MessageSquare, DatabaseZap, BookOpen, ArrowUpDown, ArrowDown, ArrowUp, ChevronRight, KeyRound } from "lucide-react";
 import Link from "next/link";
 import { StatsCard } from "@/components/StatsCard";
 import { TimeRangeSelector } from "@/components/TimeRangeSelector";
 import { TrendChart } from "@/components/charts/TrendChart";
 import { buildQuery, formatNumber, formatTokens, formatUSD } from "@/lib/utils";
 import { sortDetailBreakdown, type DetailBreakdownItem, type DetailBreakdownSortKey } from "@/lib/detail-sort";
+import { getPrimaryModelNames, getSharePercent, getTokenDisplayName, getTokenRowKey, shouldShowTokenTab, sortTokenBreakdown, type TokenBreakdownItem } from "@/lib/token-breakdown";
 import { getDetailStats, type DetailStatKey } from "@/lib/detail-stats";
 import { useTimeRange } from "@/lib/time-range-context";
 import { useI18n } from "@/lib/i18n";
@@ -20,9 +21,12 @@ interface DetailData {
   total_tokens: number; quota: number; display_name?: string;
   models?: DetailBreakdownItem[];
   users?: DetailBreakdownItem[];
+  tokens?: TokenBreakdownItem[];
   channel_name?: string;
 }
 
+type BreakdownTab = "models" | "tokens";
+
 export default function DetailPage() {
   const { t } = useI18n();
   const params = useParams();
@@ -37,6 +41,8 @@ export default function DetailPage() {
   const [loading, setLoading] = useState(true);
   const [breakdownSortKey, setBreakdownSortKey] = useState<DetailBreakdownSortKey>("total_tokens");
   const [breakdownSortAsc, setBreakdownSortAsc] = useState(false);
+  const [breakdownTab, setBreakdownTab] = useState<BreakdownTab>("models");
+  const [expandedTokens, setExpandedTokens] = useState<Set<string>>(() => new Set());
 
   const fetchData = useCallback(async () => {
     startTransition(() => setLoading(true));
@@ -57,8 +63,12 @@ export default function DetailPage() {
 
   const title = type === "channel" ? (data?.channel_name || decodedId) : (data?.display_name || decodedId);
   const typeLabel = { user: t("detail.user"), model: t("detail.model"), channel: t("detail.channel") }[type] || type;
-  const breakdownItems = data?.models || data?.users || [];
+  const modelBreakdownItems = data?.models || data?.users || [];
-  const sortedBreakdownItems = sortDetailBreakdown(breakdownItems, breakdownSortKey, breakdownSortAsc);
+  const tokenBreakdownItems = data?.tokens || [];
+  const showTokenTab = shouldShowTokenTab(type);
+  const activeBreakdownTab = showTokenTab ? breakdownTab : "models";
+  const sortedBreakdownItems = sortDetailBreakdown(modelBreakdownItems, breakdownSortKey, breakdownSortAsc);
+  const sortedTokenItems = sortTokenBreakdown(tokenBreakdownItems, breakdownSortKey, breakdownSortAsc);
   const breakdownLabel = data?.models ? t("detail.modelDist") : t("detail.userDist");
 
   function handleBreakdownSort(key: DetailBreakdownSortKey) {
@@ -66,6 +76,15 @@ export default function DetailPage() {
     else { setBreakdownSortKey(key); setBreakdownSortAsc(false); }
   }
 
+  function toggleToken(tokenName: string) {
+    setExpandedTokens((current) => {
+      const next = new Set(current);
+      if (next.has(tokenName)) next.delete(tokenName);
+      else next.add(tokenName);
+      return next;
+    });
+  }
+
   const renderBreakdownSortIcon = (col: DetailBreakdownSortKey) => {
     if (breakdownSortKey !== col) return <ArrowUpDown className="h-3 w-3" style={{ color: "var(--text-muted)", opacity: 0.4 }} />;
     return breakdownSortAsc
@@ -90,6 +109,112 @@ export default function DetailPage() {
     cache_read_tokens: BookOpen,
   };
 
+  function renderEmptyBreakdown() {
+    return (
+      <div className="px-5 py-10 text-center text-sm" style={{ color: "var(--text-muted)" }}>
+        {t("common.noData")}
+      </div>
+    );
+  }
+
+  function renderTokenDistribution() {
+    if (sortedTokenItems.length === 0) return renderEmptyBreakdown();
+
+    return (
+      <table className="w-full text-sm mt-3">
+        <thead>
+          <tr style={{ borderBottom: "1px solid var(--surface-border)" }}>
+            <th className="px-5 py-3 text-left text-xs font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("th.name")}</th>
+            {breakdownColumns.slice(1).map((col) => {
+              const key = col.key;
+              return (
+                <th key={col.label}
+                  className={`px-5 py-3 text-xs font-medium uppercase tracking-wider ${col.align === "right" ? "text-right" : "text-left"} ${key ? "cursor-pointer select-none transition-colors hover:opacity-80" : ""}`}
+                  style={{ color: key && breakdownSortKey === key ? "var(--text-accent)" : "var(--text-muted)" }}
+                  onClick={key ? () => handleBreakdownSort(key) : undefined}
+                >
+                  {key ? (
+                    <span className="inline-flex items-center gap-1 justify-end">
+                      {col.label} {renderBreakdownSortIcon(key)}
+                    </span>
+                  ) : col.label}
+                </th>
+              );
+            })}
+            <th className="px-5 py-3 text-right text-xs font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("common.share")}</th>
+            <th className="px-5 py-3 text-left text-xs font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("detail.primaryModels")}</th>
+          </tr>
+        </thead>
+        <tbody>
+          {sortedTokenItems.map((item) => {
+            const isExpanded = expandedTokens.has(item.name);
+            const tokenLabel = getTokenDisplayName(item.name, t("detail.unnamedToken"));
+            const userShare = getSharePercent(item.total_tokens, data?.total_tokens ?? 0);
+            return (
+              <Fragment key={getTokenRowKey(item.name)}>
+                <tr className="row-glow cursor-pointer transition-colors" style={{ borderBottom: "1px solid var(--surface-border)" }} onClick={() => toggleToken(item.name)}>
+                  <td className="px-5 py-3" style={{ color: "var(--text-accent)", opacity: 0.85 }}>
+                    <span className="inline-flex items-center gap-2">
+                      <button
+                        type="button"
+                        aria-label={isExpanded ? t("detail.collapseToken") : t("detail.expandToken")}
+                        className="inline-flex h-6 w-6 items-center justify-center rounded-md transition-colors"
+                        style={{ color: "var(--text-muted)", background: "var(--btn-active-bg)", border: "1px solid var(--surface-border)" }}
+                        onClick={(event) => { event.stopPropagation(); toggleToken(item.name); }}
+                      >
+                        <ChevronRight className={`h-3.5 w-3.5 transition-transform ${isExpanded ? "rotate-90" : ""}`} />
+                      </button>
+                      <KeyRound className="h-3.5 w-3.5" style={{ color: "var(--accent)", opacity: 0.55 }} />
+                      <span>{tokenLabel}</span>
+                    </span>
+                  </td>
+                  <td className="px-5 py-3 text-right tabular-nums font-[family-name:var(--font-geist-mono)] text-xs" style={{ color: "var(--text-secondary)" }}>{formatNumber(item.calls)}</td>
+                  <td className="px-5 py-3 text-right tabular-nums font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-primary)" }}>{formatTokens(item.total_tokens)}</td>
+                  <td className="px-5 py-3 text-right tabular-nums font-[family-name:var(--font-geist-mono)] text-xs" style={{ color: "var(--text-secondary)" }}>{formatUSD(item.quota / 500000)}</td>
+                  <td className="px-5 py-3 text-right tabular-nums font-[family-name:var(--font-geist-mono)] text-xs" style={{ color: "var(--text-muted)" }}>{userShare.toFixed(1)}%</td>
+                  <td className="px-5 py-3 text-xs" style={{ color: "var(--text-muted)" }}>{getPrimaryModelNames(item.models) || t("common.noData")}</td>
+                </tr>
+                {isExpanded && (
+                  <tr style={{ borderBottom: "1px solid var(--surface-border)" }}>
+                    <td colSpan={6} className="px-5 pb-4 pt-0">
+                      <div className="ml-8 overflow-hidden rounded-lg" style={{ border: "1px solid var(--surface-border)", background: "var(--row-hover)" }}>
+                        <table className="w-full text-xs">
+                          <thead>
+                            <tr style={{ borderBottom: "1px solid var(--surface-border)" }}>
+                              <th className="px-4 py-2 text-left font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("detail.model")}</th>
+                              <th className="px-4 py-2 text-right font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("th.calls")}</th>
+                              <th className="px-4 py-2 text-right font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("th.totalToken")}</th>
+                              <th className="px-4 py-2 text-right font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("th.cost")}</th>
+                              <th className="px-4 py-2 text-right font-medium uppercase tracking-wider" style={{ color: "var(--text-muted)" }}>{t("common.share")}</th>
+                            </tr>
+                          </thead>
+                          <tbody>
+                            {item.models.map((model) => {
+                              const modelShare = getSharePercent(model.total_tokens, item.total_tokens);
+                              return (
+                                <tr key={`${item.name}:${model.name}`} style={{ borderBottom: "1px solid var(--surface-border)" }}>
+                                  <td className="px-4 py-2 font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-accent)", opacity: 0.75 }}>{model.name}</td>
+                                  <td className="px-4 py-2 text-right tabular-nums font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-secondary)" }}>{formatNumber(model.calls)}</td>
+                                  <td className="px-4 py-2 text-right tabular-nums font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-primary)" }}>{formatTokens(model.total_tokens)}</td>
+                                  <td className="px-4 py-2 text-right tabular-nums font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-secondary)" }}>{formatUSD(model.quota / 500000)}</td>
+                                  <td className="px-4 py-2 text-right tabular-nums font-[family-name:var(--font-geist-mono)]" style={{ color: "var(--text-muted)" }}>{modelShare.toFixed(1)}%</td>
+                                </tr>
+                              );
+                            })}
+                          </tbody>
+                        </table>
+                      </div>
+                    </td>
+                  </tr>
+                )}
+              </Fragment>
+            );
+          })}
+        </tbody>
+      </table>
+    );
+  }
+
   return (
     <div className="space-y-6">
       <div className="flex items-center justify-between">
@@ -127,9 +252,38 @@ export default function DetailPage() {
             <TrendChart data={trends} />
           </motion.div>
 
-          {breakdownItems.length > 0 && (
+          {(modelBreakdownItems.length > 0 || showTokenTab) && (
             <motion.div initial={{ opacity: 0, y: 16 }} animate={{ opacity: 1, y: 0 }} transition={{ delay: 0.2 }} className="glass overflow-hidden">
-              <h2 className="px-5 pt-5 text-xs font-medium uppercase tracking-widest" style={{ color: "var(--text-muted)" }}>{breakdownLabel}</h2>
+              <div className="flex items-center justify-between gap-3 px-5 pt-5">
+                <h2 className="text-xs font-medium uppercase tracking-widest" style={{ color: "var(--text-muted)" }}>
+                  {activeBreakdownTab === "tokens" ? t("detail.tokenDist") : breakdownLabel}
+                </h2>
+                {showTokenTab && (
+                  <div className="flex gap-1 rounded-lg p-1" style={{ background: "var(--row-hover)", border: "1px solid var(--surface-border)" }}>
+                    {([
+                      ["models", t("detail.modelDist")],
+                      ["tokens", t("detail.tokenDist")],
+                    ] as const).map(([value, label]) => (
+                      <button
+                        key={value}
+                        type="button"
+                        onClick={() => setBreakdownTab(value)}
+                        className="rounded-md px-3 py-1.5 text-xs font-medium transition-colors"
+                        style={{
+                          background: activeBreakdownTab === value ? "var(--btn-active-bg)" : "transparent",
+                          color: activeBreakdownTab === value ? "var(--text-accent)" : "var(--text-muted)",
+                          border: activeBreakdownTab === value ? "1px solid var(--surface-border)" : "1px solid transparent",
+                        }}
+                      >
+                        {label}
+                      </button>
+                    ))}
+                  </div>
+                )}
+              </div>
+              {activeBreakdownTab === "tokens" ? (
+                renderTokenDistribution()
+              ) : sortedBreakdownItems.length > 0 ? (
                 <table className="w-full text-sm mt-3">
                   <thead>
                     <tr style={{ borderBottom: "1px solid var(--surface-border)" }}>
@@ -162,6 +316,7 @@ export default function DetailPage() {
                     ))}
                   </tbody>
                 </table>
+              ) : renderEmptyBreakdown()}
             </motion.div>
           )}
         </>

lib/i18n.tsx

@@ -89,6 +89,11 @@ const translations = {
     "detail.trend": "使用趋势",
     "detail.modelDist": "模型分布",
     "detail.userDist": "用户分布",
+    "detail.tokenDist": "令牌分布",
+    "detail.primaryModels": "主要模型",
+    "detail.unnamedToken": "未命名令牌",
+    "detail.expandToken": "展开令牌",
+    "detail.collapseToken": "收起令牌",
     // theme
     "theme.light": "浅色",
     "theme.dark": "深色",
@@ -210,6 +215,11 @@ const translations = {
     "detail.trend": "Usage Trend",
     "detail.modelDist": "Model Distribution",
     "detail.userDist": "User Distribution",
+    "detail.tokenDist": "Token Distribution",
+    "detail.primaryModels": "Primary Models",
+    "detail.unnamedToken": "Unnamed Token",
+    "detail.expandToken": "Expand token",
+    "detail.collapseToken": "Collapse token",
     "theme.light": "Light",
     "theme.dark": "Dark",
     "theme.system": "System",