import { describe, expect, test } from "bun:test";
import {
	parseCustomerOccurrenceName,
	parseTrackMessageId,
} from "./sdk-event-options";

describe("parseCustomerOccurrenceName", () => {
	test("requires a string, trims it, and preserves the normalized length", () => {
		expect(parseCustomerOccurrenceName(" Checkout ", "eventName")).toBe(
			"Checkout",
		);
		expect(parseCustomerOccurrenceName("n".repeat(255), "eventName")).toBe(
			"n".repeat(255),
		);
		expect(() => parseCustomerOccurrenceName(undefined, "eventName")).toThrow(
			"eventName must be a non-empty string",
		);
	});

	test("rejects blank and overlong normalized names", () => {
		expect(() => parseCustomerOccurrenceName("   ", "pageName")).toThrow(
			"pageName must be a non-empty string",
		);
		expect(() =>
			parseCustomerOccurrenceName(` ${"n".repeat(256)} `, "screenName"),
		).toThrow("screenName must be at most 255 characters");
	});
});

describe("parseTrackMessageId", () => {
	test("preserves valid IDs without normalization", () => {
		expect(parseTrackMessageId(" occurrence_123 ")).toBe(" occurrence_123 ");
		expect(parseTrackMessageId("m".repeat(255))).toBe("m".repeat(255));
		expect(parseTrackMessageId(undefined)).toBeUndefined();
	});

	test("rejects IDs that ingestion cannot preserve", () => {
		expect(() => parseTrackMessageId("")).toThrow("non-empty string");
		expect(() => parseTrackMessageId("   ")).toThrow("non-empty string");
		expect(() => parseTrackMessageId("m".repeat(256))).toThrow(
			"at most 255 characters",
		);
	});
});