import { describe, expect, it } from "vitest";
import { fillDailySeries, mergeRiskActivity } from "./admin-metrics";

describe("admin dashboard metrics", () => {
  it("fills missing UTC registration days with zero", () => {
    expect(fillDailySeries(
      [{ day: "2026-07-30", count: 2 }, { day: "2026-08-01", count: 1 }],
      new Date("2026-08-01T22:00:00Z"),
      3,
    )).toEqual([
      { day: "2026-07-30", count: 2 },
      { day: "2026-07-31", count: 0 },
      { day: "2026-08-01", count: 1 },
    ]);
  });

  it("merges complete per-user VPN summaries with each user's latest observation", () => {
    const latest = [
      { userId: "user-2", classification: "tor", observedAt: new Date("2026-08-01T11:00:00Z") },
      { userId: "user-1", classification: "proxy", observedAt: new Date("2026-08-01T12:00:00Z") },
    ];
    const summaries = [
      { userId: "user-1", count: 2000, classifications: ["proxy", "vpn"], sources: ["game", "web"] },
      { userId: "user-2", count: 1, classifications: ["tor"], sources: ["web"] },
    ];

    expect(mergeRiskActivity(latest, summaries)).toEqual([
      expect.objectContaining({ userId: "user-1", count: 2000, classification: "proxy", classifications: ["proxy", "vpn"], sources: ["game", "web"] }),
      expect.objectContaining({ userId: "user-2", count: 1, classification: "tor" }),
    ]);
  });
});