import { describe, expect, it, vi, beforeEach } from "vitest";

const findMany = vi.hoisted(() => vi.fn());
const create = vi.hoisted(() => vi.fn());
const getBool = vi.hoisted(() => vi.fn());
const get = vi.hoisted(() => vi.fn());

vi.mock("@/lib/prisma", () => ({
	prisma: { websiteIpBlacklist: { findMany, create } },
}));

vi.mock("@/lib/services/alert", () => ({
	ddosDetected: vi.fn().mockResolvedValue(undefined),
}));

vi.mock("@/lib/services/site-settings", () => ({
	siteSettings: { getBool, get },
}));

vi.mock("@/env", () => ({ env: {} }));

import { isIpBlacklisted, recordRequest } from "./abuse-guard";

describe("isIpBlacklisted", () => {
	it("returns false for private IPs without DB call", async () => {
		expect(await isIpBlacklisted("127.0.0.1")).toBe(false);
		expect(await isIpBlacklisted("192.168.1.1")).toBe(false);
		expect(await isIpBlacklisted("10.0.0.1")).toBe(false);
		expect(findMany).not.toHaveBeenCalled();
	});

	it("loads, caches, and correctly checks multiple IPs", async () => {
		findMany.mockResolvedValue([{ ipAddress: "1.2.3.4" }]);

		expect(await isIpBlacklisted("1.2.3.4")).toBe(true);
		expect(await isIpBlacklisted("1.2.3.4")).toBe(true);
		expect(await isIpBlacklisted("5.6.7.8")).toBe(false);
		expect(findMany).toHaveBeenCalledTimes(1);

		findMany.mockResolvedValue([]);
		expect(await isIpBlacklisted("1.2.3.4")).toBe(true);
	});

	it("handles DB error gracefully (uses stale cache)", async () => {
		findMany.mockRejectedValue(new Error("DB error"));
		expect(await isIpBlacklisted("1.2.3.4")).toBe(true);
		expect(await isIpBlacklisted("9.9.9.9")).toBe(false);
	});
});

describe("recordRequest", () => {
	beforeEach(() => {
		getBool.mockReset();
		get.mockReset();
		create.mockReset();
	});

	it("ignores private IPs", async () => {
		await recordRequest("::1");
		expect(getBool).not.toHaveBeenCalled();
	});

	it("respects abuse_guard_enabled setting", async () => {
		getBool.mockResolvedValue(false);
		await recordRequest("1.2.3.4");
		expect(get).not.toHaveBeenCalled();
	});

	it("tracks request counts and blocks exceeding threshold", async () => {
		getBool.mockResolvedValue(true);
		get.mockImplementation(async (_key: string, fallback: string) => {
			if (_key === "abuse_guard_threshold") return "3";
			return fallback;
		});
		create.mockResolvedValue({});

		await recordRequest("1.2.3.4");
		await recordRequest("1.2.3.4");
		expect(create).not.toHaveBeenCalled();

		await recordRequest("1.2.3.4");
		expect(create).toHaveBeenCalledWith(
			expect.objectContaining({
				data: expect.objectContaining({ ipAddress: "1.2.3.4" }),
			}),
		);
	});
});