import { afterEach, beforeEach, expect, test } from "bun:test";

const sent: Array<[string, unknown]> = [];
beforeEach(() => {
	sent.length = 0;
	(globalThis as any).window = {};
});
afterEach(async () => {
	const { __resetTrackQueue } = await import("./trackEvent");
	__resetTrackQueue();
	delete (globalThis as any).window;
});
const umami = { track: (e: string, d: unknown) => sent.push([e, d]) };
const wait = (ms: number) => new Promise((r) => setTimeout(r, ms));

test("sends immediately when umami is loaded", async () => {
	const { trackEvent } = await import("./trackEvent");
	(globalThis as any).window.umami = umami;
	trackEvent("a", { x: 1 });
	expect(sent).toEqual([["a", { x: 1 }]]);
});

test("queues until umami appears, then flushes in order and calls onSent", async () => {
	const { trackEvent } = await import("./trackEvent");
	let confirmed = false;
	trackEvent("first");
	trackEvent("purchase-completed", { revenue: 12.5, currency: "EUR" }, () => (confirmed = true));
	expect(sent).toEqual([]);
	await wait(300);
	(globalThis as any).window.umami = umami;
	await wait(400);
	expect(sent.map((s) => s[0])).toEqual(["first", "purchase-completed"]);
	expect(confirmed).toBe(true);
});

test("never throws and drops events when umami never loads", async () => {
	const { trackEvent } = await import("./trackEvent");
	let confirmed = false;
	trackEvent("lost", undefined, () => (confirmed = true));
	await wait(10_500);
	(globalThis as any).window.umami = umami;
	await wait(400);
	expect(sent).toEqual([]);
	expect(confirmed).toBe(false);
}, 15_000);

test("is a no-op on the server", async () => {
	delete (globalThis as any).window;
	const { trackEvent } = await import("./trackEvent");
	expect(() => trackEvent("ssr")).not.toThrow();
});