feat: add user token breakdown data

lib/queries.test.ts

@@ -16,11 +16,22 @@ mock.module("./db", () => ({
   query: queryMock,
 }));
 
-const { getTrends } = await import("./queries");
+const { getTrends, getUserDetail } = await import("./queries");
 
 describe("getTrends", () => {
   beforeEach(() => {
     queryMock.mockClear();
+    queryMock.mockImplementation(async () => [
+      {
+        date: "2026-04-01 13:00:00",
+        calls: 1,
+        prompt_tokens: 10,
+        completion_tokens: 20,
+        cache_creation_tokens: 3,
+        cache_read_tokens: 4,
+        quota: 100,
+      },
+    ]);
   });
 
   test("adds optional detail filters to the trend query", async () => {
@@ -44,3 +55,71 @@ describe("getTrends", () => {
     expect(trends[0].date).toBe("2026-04-01 13:00");
   });
 });
+
+describe("getUserDetail", () => {
+  beforeEach(() => {
+    queryMock.mockClear();
+  });
+
+  test("returns token breakdown with nested model rows for user details", async () => {
+    queryMock.mockImplementation(async (sql: string) => {
+      if (sql.includes("token_models AS")) {
+        return [
+          { token_name: "prod-key", model: "claude-sonnet-4", calls: 3, tokens: 100, cache_creation: 5, cache_read: 7, quota: 50 },
+          { token_name: "", model: "gpt-4o", calls: 1, tokens: 20, cache_creation: 0, cache_read: 0, quota: 10 },
+        ];
+      }
+
+      if (sql.includes("GROUP BY token_name")) {
+        return [
+          { token_name: "prod-key", calls: 3, tokens: 100, cache_creation: 5, cache_read: 7, quota: 50 },
+          { token_name: "", calls: 1, tokens: 20, cache_creation: 0, cache_read: 0, quota: 10 },
+        ];
+      }
+
+      if (sql.includes("GROUP BY model")) {
+        return [];
+      }
+
+      if (sql.includes("SELECT id, display_name FROM users")) {
+        return [];
+      }
+
+      if (sql.includes("SELECT id FROM users WHERE username")) {
+        return [];
+      }
+
+      if (sql.includes("SELECT COUNT(*)::int as calls")) {
+        return [
+          { calls: 4, prompt: 120, completion: 0, cache_creation: 5, cache_read: 7, quota: 60 },
+        ];
+      }
+
+      return [];
+    });
+
+    const detail = await getUserDetail("token-user", 301, 401);
+
+    expect(detail.tokens).toEqual([
+      {
+        name: "prod-key",
+        calls: 3,
+        total_tokens: 112,
+        quota: 50,
+        models: [
+          { name: "claude-sonnet-4", calls: 3, total_tokens: 112, quota: 50 },
+        ],
+      },
+      {
+        name: "",
+        calls: 1,
+        total_tokens: 20,
+        quota: 10,
+        models: [
+          { name: "gpt-4o", calls: 1, total_tokens: 20, quota: 10 },
+        ],
+      },
+    ]);
+    expect(queryMock.mock.calls.some(([sql]) => String(sql).includes("token_name"))).toBe(true);
+  });
+});