import { describe, expect, it, vi } from "vitest";
import {
  BOARD_SCALE_STORAGE_KEY,
  colorMarkDescription,
  normalizeBoardScale,
  parseCandidateVerbosity,
  readStoredBoardScale,
  writeStoredBoardScale,
} from "../../src/state/uiPreferences";

describe("UI accessibility preferences", () => {
  it("clamps and snaps persisted board scale safely", () => {
    expect(normalizeBoardScale(1.13)).toBe(1.25);
    expect(normalizeBoardScale(0.1)).toBe(0.75);
    expect(normalizeBoardScale(9)).toBe(2);
    expect(normalizeBoardScale("not a scale")).toBe(1);

    const storage = { getItem: vi.fn(() => "1.49") };
    expect(readStoredBoardScale(storage)).toBe(1.5);
    expect(storage.getItem).toHaveBeenCalledWith(BOARD_SCALE_STORAGE_KEY);

    const setItem = vi.fn();
    writeStoredBoardScale(1.74, { setItem });
    expect(setItem).toHaveBeenCalledWith(BOARD_SCALE_STORAGE_KEY, "1.75");
  });

  it("survives unavailable storage and normalizes announcement settings", () => {
    expect(
      readStoredBoardScale({
        getItem: () => {
          throw new Error("blocked");
        },
      }),
    ).toBe(1);
    expect(() =>
      writeStoredBoardScale(1.5, {
        setItem: () => {
          throw new Error("blocked");
        },
      }),
    ).not.toThrow();
    expect(parseCandidateVerbosity("concise")).toBe("concise");
    expect(parseCandidateVerbosity("everything")).toBe("detailed");
  });

  it("gives every colour mark a non-colour identifier", () => {
    expect(colorMarkDescription(1)).toBe("red, diagonal stripes");
    expect(colorMarkDescription(8)).toBe("pink, rings");
    expect(colorMarkDescription(99)).toBe("mark 99");
  });
});