import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

const store = new Map<string, string>();

async function load(search: string) {
  vi.resetModules();
  vi.stubGlobal("location", { search });
  vi.stubGlobal("localStorage", {
    getItem: (k: string) => store.get(k) ?? null,
    setItem: (k: string, v: string) => void store.set(k, v),
    removeItem: (k: string) => void store.delete(k),
  });
  return import("../skins");
}

describe("skins", () => {
  beforeEach(() => store.clear());
  afterEach(() => vi.unstubAllGlobals());

  it("is the dolphin with nothing chosen", async () => {
    const m = await load("");
    expect(m.SKIN.id).toBe("dolphin");
  });

  it("takes ?theme= and remembers it", async () => {
    const m = await load("?theme=dinosaur");
    expect(m.SKIN.id).toBe("dinosaur");
    expect(store.get(m.STORAGE_KEY)).toBe("dinosaur");
  });

  it("uses the remembered skin when the URL has none", async () => {
    store.set("musicmouse.theme", "dinosaur");
    const m = await load("?pi=1");
    expect(m.SKIN.id).toBe("dinosaur");
  });

  it("lets ?theme= switch back", async () => {
    store.set("musicmouse.theme", "dinosaur");
    const m = await load("?theme=dolphin");
    expect(m.SKIN.id).toBe("dolphin");
    expect(store.get(m.STORAGE_KEY)).toBe("dolphin");
  });

  it("gives every skin a complete, readable game world", async () => {
    const { SKINS } = await load("");
    const { CREATURE_IDS } = await import("../tippen/pets");
    const { ANIMALS } = await import("../tippen/grading");
    for (const skin of Object.values(SKINS)) {
      const { game } = skin;
      for (const id of CREATURE_IDS) expect(game.pets[id].name, `${skin.id} ${id}`).not.toBe("");
      const ladder = ANIMALS.map((animal) => game.ladder[animal.id]);
      for (const rung of ladder) expect(rung.name && rung.emoji && rung.praise, skin.id).toBeTruthy();
      // One look per rung: two rungs sharing a name or an emoji would read as no progress.
      expect(new Set(ladder.map((rung) => rung.emoji)).size, skin.id).toBe(ladder.length);
      expect(new Set(ladder.map((rung) => rung.name)).size, skin.id).toBe(ladder.length);
      // ⭐ is the star rating, three lines below the animal on the result sheet.
      for (const rung of ladder) expect(rung.emoji, skin.id).not.toBe("⭐");
      for (const mode of Object.values(game.modes)) expect(mode.name && mode.emoji, skin.id).toBeTruthy();
      expect(game.feedItems.length, skin.id).toBeGreaterThan(0);
    }
  });

  it("ignores unknown values, in the URL and in storage", async () => {
    store.set("musicmouse.theme", "toString");
    const m = await load("?theme=unicorn");
    expect(m.SKIN.id).toBe("dolphin");
    expect(store.get(m.STORAGE_KEY)).toBe("toString");
  });
});