import { fireEvent, render, screen, waitFor } from "@testing-library/react";
import { ApiError } from "@/lib/api";
import BlocklistForm, { swallowMutationError } from "./BlocklistForm";

test("swallowMutationError drops an ApiError and rethrows anything else", () => {
	expect(() => swallowMutationError(new ApiError(400, "bad url"))).not.toThrow();
	expect(() => swallowMutationError(new TypeError("cannot read x of undefined"))).toThrow(TypeError);
	expect(() => swallowMutationError("not an error at all")).toThrow();
});

test("a rejected submit leaves the typed values in place; a resolved one clears them", async () => {
	const rejecting = vi.fn(() => Promise.reject(new ApiError(400, "bad url")));
	const { rerender } = render(<BlocklistForm busy={false} error={null} onSubmit={rejecting} onCancel={undefined} />);
	const url = screen.getByLabelText("URL") as HTMLInputElement;
	const name = screen.getByLabelText("Name") as HTMLInputElement;
	fireEvent.change(url, { target: { value: "https://example.com/list.txt" } });
	fireEvent.change(name, { target: { value: "Example" } });
	fireEvent.click(screen.getByRole("button", { name: "Add source" }));

	await waitFor(() => expect(rejecting).toHaveBeenCalledTimes(1));
	expect(url.value).toBe("https://example.com/list.txt");
	expect(name.value).toBe("Example");

	const resolving = vi.fn(() => Promise.resolve());
	rerender(<BlocklistForm busy={false} error={null} onSubmit={resolving} onCancel={undefined} />);
	fireEvent.click(screen.getByRole("button", { name: "Add source" }));
	await waitFor(() => expect(url.value).toBe(""));
	expect(name.value).toBe("");
});
