OmniRoute/tests/unit/api-key-usage-limits.test.ts

import test from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";

const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-api-key-usage-limits-"));
process.env.DATA_DIR = TEST_DATA_DIR;
process.env.API_KEY_SECRET = process.env.API_KEY_SECRET || "usage-limit-test-secret";

const core = await import("../../src/lib/db/core.ts");
const localDb = await import("../../src/lib/localDb.ts");
const apiKeysDb = await import("../../src/lib/db/apiKeys.ts");
const usageHistory = await import("../../src/lib/usage/usageHistory.ts");
const usageLimits = await import("../../src/lib/usage/apiKeyUsageLimits.ts");

const NOW = Date.parse("2026-06-19T20:00:00.000Z");

async function resetStorage() {
  core.resetDbInstance();
  apiKeysDb.resetApiKeyState();
  usageHistory.clearPendingRequests();
  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
  fs.mkdirSync(TEST_DATA_DIR, { recursive: true });
}

test.beforeEach(async () => {
  await resetStorage();
});

test.after(() => {
  core.resetDbInstance();
  apiKeysDb.resetApiKeyState();
  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
});

test("API key USD usage limits persist and default off", async () => {
  const created = await apiKeysDb.createApiKey("Usage Limit Key", "machine-limit-01");

  let metadata = await apiKeysDb.getApiKeyMetadata(created.key);
  assert.equal(metadata?.usageLimitEnabled, false);
  assert.equal(metadata?.dailyUsageLimitUsd, null);
  assert.equal(metadata?.weeklyUsageLimitUsd, null);

  await apiKeysDb.updateApiKeyPermissions(created.id, {
    usageLimitEnabled: true,
    dailyUsageLimitUsd: 10.5,
    weeklyUsageLimitUsd: 50,
  });
  apiKeysDb.clearApiKeyCaches();

  metadata = await apiKeysDb.getApiKeyMetadata(created.key);
  assert.equal(metadata?.usageLimitEnabled, true);
  assert.equal(metadata?.dailyUsageLimitUsd, 10.5);
  assert.equal(metadata?.weeklyUsageLimitUsd, 50);
});

test("getApiKeyUsageLimitStatus aligns weekly USD spend with provider resetAt when available", async () => {
  await localDb.updatePricing({
    claude: {
      "claude-opus-4-8": {
        input: 1,
        cached: 1,
        output: 1,
        reasoning: 1,
        cache_creation: 1,
      },
    },
  });

  const created = await apiKeysDb.createApiKey("Metered Key", "machine-limit-02");
  await apiKeysDb.updateApiKeyPermissions(created.id, {
    usageLimitEnabled: true,
    dailyUsageLimitUsd: 10,
    weeklyUsageLimitUsd: 20,
  });

  await usageHistory.saveRequestUsage({
    provider: "claude",
    model: "claude-opus-4-8",
    apiKeyId: created.id,
    apiKeyName: "Metered Key",
    tokens: { input: 2_000_000, output: 0 },
    success: true,
    timestamp: "2026-06-19T12:00:00.000Z",
  });
  await usageHistory.saveRequestUsage({
    provider: "claude",
    model: "claude-opus-4-8",
    apiKeyId: created.id,
    apiKeyName: "Metered Key",
    tokens: { input: 3_000_000, output: 0 },
    success: true,
    timestamp: "2026-06-18T21:00:00.000Z",
  });
  await usageHistory.saveRequestUsage({
    provider: "claude",
    model: "claude-opus-4-8",
    apiKeyId: created.id,
    apiKeyName: "Metered Key",
    tokens: { input: 7_000_000, output: 0 },
    success: true,
    timestamp: "2026-06-18T12:00:00.000Z",
  });

  const metadata = await apiKeysDb.getApiKeyMetadata(created.key);
  assert.ok(metadata);

  const weeklyResetAt = "2026-06-25T20:00:00.000Z";
  const status = await usageLimits.getApiKeyUsageLimitStatus(
    { ...metadata, allowedConnections: ["conn-claude"] },
    {
      now: () => NOW,
      getProviderConnectionById: async () => ({
        id: "conn-claude",
        provider: "claude",
        isActive: true,
      }),
      getProviderConnections: async () => [],
      getProviderLimitsCache: () => ({
        plan: "Claude Max",
        quotas: {
          "weekly (7d)": {
            used: 27,
            total: 100,
            resetAt: weeklyResetAt,
          },
        },
        message: null,
        fetchedAt: new Date(NOW).toISOString(),
      }),
      getAllProviderLimitsCache: () => ({}),
    }
  );

  assert.equal(status.enabled, true);
  assert.equal(status.dailySpentUsd, 2);
  assert.equal(status.weeklySpentUsd, 5);
  assert.equal(status.dailyLimitUsd, 10);
  assert.equal(status.weeklyLimitUsd, 20);
  assert.equal(status.weeklyWindowStartIso, "2026-06-18T20:00:00.000Z");
  assert.equal(status.weeklyResetAtIso, weeklyResetAt);
  assert.equal(status.dailyExceeded, false);
  assert.equal(status.weeklyExceeded, false);
});

test("buildApiKeyUsageLimitText returns only the quota and spent USD lines", async () => {
  const text = usageLimits.buildApiKeyUsageLimitText({
    enabled: true,
    dailyLimitUsd: 10,
    weeklyLimitUsd: 50,
    dailySpentUsd: 2,
    weeklySpentUsd: 5.25,
    dailyWindowStartIso: "2026-06-19T03:00:00.000Z",
    weeklyWindowStartIso: "2026-06-12T20:00:00.000Z",
    weeklyResetAtIso: "2026-06-19T20:00:00.000Z",
    dailyExceeded: false,
    weeklyExceeded: false,
  });

  assert.equal(
    text,
    [
      "Cota diaria",
      "$10.00",
      "Gasto diario",
      "$2.00",
      "",
      "Cota semanal",
      "$50.00",
      "Gasto semanal",
      "$5.25",
    ].join("\n")
  );
});

test("buildApiKeyUsageLimitRejection uses 400 so Claude Code does not trigger login", () => {
  const response = usageLimits.buildApiKeyUsageLimitRejection(
    new Request("http://localhost/v1/messages", {
      headers: { "anthropic-version": "2023-06-01" },
    }),
    {
      enabled: true,
      dailyLimitUsd: 10,
      weeklyLimitUsd: 50,
      dailySpentUsd: 12,
      weeklySpentUsd: 20,
      dailyWindowStartIso: "2026-06-19T03:00:00.000Z",
      weeklyWindowStartIso: "2026-06-12T20:00:00.000Z",
      weeklyResetAtIso: "2026-06-19T20:00:00.000Z",
      dailyExceeded: true,
      weeklyExceeded: false,
    }
  );

  assert.equal(response.status, 400);
});