import { vi } from 'vitest';

// jsdom lacks ResizeObserver
global.ResizeObserver = class {
    observe = vi.fn();
    unobserve = vi.fn();
    disconnect = vi.fn();
} as unknown as typeof ResizeObserver;

// jsdom lacks Web Animations API
Element.prototype.animate = vi.fn().mockReturnValue({
    onfinish: null,
    cancel: vi.fn(),
    finish: vi.fn(),
    pause: vi.fn(),
    play: vi.fn(),
});

// jsdom lacks SVG geometry methods
(SVGElement.prototype as any).getTotalLength = vi.fn(() => 0);

// Robust localStorage mock for jsdom environment
const localStorageMock = (() => {
    let store: Record<string, string> = {};
    return {
        getItem: vi.fn((key: string) => store[key] || null),
        setItem: vi.fn((key: string, value: string) => {
            store[key] = value.toString();
        }),
        removeItem: vi.fn((key: string) => {
            delete store[key];
        }),
        clear: vi.fn(() => {
            store = {};
        }),
        key: vi.fn((index: number) => Object.keys(store)[index] || null),
        get length() {
            return Object.keys(store).length;
        },
    };
})();

Object.defineProperty(window, 'localStorage', {
    value: localStorageMock,
    writable: true,
});