import { afterEach, describe, expect, it, vi } from "vitest";
import { _resetIgdbState, getIgdbGame, igdbImage } from "@/lib/game/igdb";

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

function tokenResponse() {
    return {
        ok: true,
        json: async () => ({ access_token: "tok", expires_in: 3600 }),
    } as Response;
}

describe("igdbImage", () => {
    it("upgrades thumbnail sizes", () => {
        expect(igdbImage("//images.igdb.com/t_thumb/1.jpg", "t_cover_big")).toBe(
            "https://images.igdb.com/t_cover_big/1.jpg",
        );
    });

    it("returns null without a url", () => {
        expect(igdbImage(undefined, "t_cover_big")).toBeNull();
    });
});

describe("getIgdbGame", () => {
    it("returns null without credentials and warns once", async () => {
        vi.stubGlobal("process", { ...process, env: {} });
        const fetchMock = vi.fn();
        vi.stubGlobal("fetch", fetchMock);
        await expect(getIgdbGame("Game", null)).resolves.toBeNull();
        await expect(getIgdbGame("Game", null)).resolves.toBeNull();
        expect(fetchMock).not.toHaveBeenCalled();
    });

    it("returns null when the token fetch rejects", async () => {
        vi.stubGlobal("process", {
            ...process,
            env: { TWITCH_CLIENT_ID: "id", TWITCH_CLIENT_SECRET: "secret" },
        });
        vi.stubGlobal(
            "fetch",
            vi.fn(async () => {
                throw new Error("down");
            }),
        );
        await expect(getIgdbGame("Game", null)).resolves.toBeNull();
    });

    it("escapes backslashes and quotes in search queries", async () => {
        vi.stubGlobal("process", {
            ...process,
            env: { TWITCH_CLIENT_ID: "id", TWITCH_CLIENT_SECRET: "secret" },
        });
        const bodies: string[] = [];
        vi.stubGlobal(
            "fetch",
            vi.fn(async (_url: string, init?: RequestInit) => {
                if (typeof init?.body === "string" && init.body.includes("external_games")) {
                    return { ok: true, json: async () => [] } as Response;
                }
                if (typeof init?.body === "string") {
                    bodies.push(init.body);
                    return { ok: true, json: async () => [] } as Response;
                }
                return tokenResponse();
            }),
        );
        await expect(getIgdbGame('a\\b"c', null)).resolves.toBeNull();
        expect(bodies.some((b) => b.includes('a\\\\b\\"c'))).toBe(true);
    });
});