import { resolve } from "node:path";
import { Check } from "typebox/value";
import { describe, expect, it } from "vitest";
import {
  decideToolPolicy,
  executeMockAdsMetrics,
  mockAdsMetricsInputSchema,
} from "../src/index.js";

const fixturePath = resolve(import.meta.dirname, "../../../fixtures/ads-account.json");

describe("mock_ads_metrics", () => {
  it("uses an integer 1-30 day TypeBox schema", () => {
    expect(Check(mockAdsMetricsInputSchema, { accountId: "demo-account", days: 7 })).toBe(true);
    expect(Check(mockAdsMetricsInputSchema, { accountId: "demo-account", days: 0 })).toBe(false);
    expect(Check(mockAdsMetricsInputSchema, { accountId: "demo-account", days: 7.5 })).toBe(false);
    expect(Check(mockAdsMetricsInputSchema, { accountId: "demo-account", days: 31 })).toBe(false);
  });

  it("returns hand-checked zero-safe metrics and campaign details", async () => {
    const result = await executeMockAdsMetrics(fixturePath, { accountId: "demo-account", days: 7 });
    expect(result).toMatchObject({
      spend: 10000,
      impressions: 400000,
      clicks: 8100,
      ctr: 2.03,
      conversions: 295,
      cpa: 33.9,
      revenue: 21800,
      roas: 2.18,
      days: 7,
    });
    expect(result.campaigns).toContainEqual(expect.objectContaining({
      campaignId: "cmp-low-ctr",
      ctr: 1,
      cpa: 80,
    }));
  });

  it("rejects unknown accounts with a stable error code", async () => {
    await expect(executeMockAdsMetrics(fixturePath, { accountId: "missing", days: 7 }))
      .rejects.toMatchObject({ code: "ADS_ACCOUNT_NOT_FOUND" });
  });
});

describe("tool policy", () => {
  it("requires approval for real analytics and report generation but never allows arbitrary MCP mutations", () => {
    expect(decideToolPolicy("swads_whoami")).toBe("allow");
    expect(decideToolPolicy("metrics_catalog")).toBe("allow");
    expect(decideToolPolicy("metrics_semantic_query")).toBe("ask");
    expect(decideToolPolicy("generate_minis_report")).toBe("ask");
    expect(decideToolPolicy("campaign_update")).toBe("deny");
  });

  it("allows only the explicit safe set, asks for report save, and denies unknown tools", () => {
    expect(["read", "grep", "find", "ls", "mock_ads_metrics"].map(decideToolPolicy)).toEqual([
      "allow", "allow", "allow", "allow", "allow",
    ]);
    expect(decideToolPolicy("save_report_draft")).toBe("ask");
    expect(decideToolPolicy("bash")).toBe("deny");
    expect(decideToolPolicy("unknown_tool")).toBe("deny");
  });
});