import { afterEach, describe, expect, it, vi } from "vitest";
import { getDiscordAppInfo } from "@/lib/game/discord-app";

afterEach(() => {
    vi.unstubAllGlobals();
});

function okRpc(overrides = {}) {
    return {
        ok: true,
        json: async () => ({ id: "123", name: "Game", ...overrides }),
    } as Response;
}

describe("getDiscordAppInfo", () => {
    it("returns null for non-numeric ids without fetching", async () => {
        const fetchMock = vi.fn();
        vi.stubGlobal("fetch", fetchMock);
        await expect(getDiscordAppInfo("abc")).resolves.toBeNull();
        expect(fetchMock).not.toHaveBeenCalled();
    });

    it("maps a successful RPC response", async () => {
        vi.stubGlobal(
            "fetch",
            vi.fn(async () => okRpc()),
        );
        const info = await getDiscordAppInfo("123");
        expect(info?.gameUrl).toBe("https://discord.com/games/123");
    });

    it("returns null on HTTP error", async () => {
        vi.stubGlobal(
            "fetch",
            vi.fn(async () => ({ ok: false, status: 404 }) as Response),
        );
        await expect(getDiscordAppInfo("123")).resolves.toBeNull();
    });

    it("throws on network failure", async () => {
        vi.stubGlobal(
            "fetch",
            vi.fn(async () => {
                throw new Error("down");
            }),
        );
        await expect(getDiscordAppInfo("123")).rejects.toThrow("discord rpc unreachable");
    });
});