// AppShell 响应式单测（B1）：四档断点的 class 切换（FR-RESP-001..004）
// jsdom + matchMedia mock。验证：
//  desktop ≥1280：无 drawers-mode，折叠 class 生效
//  laptop 1024–1279：无 drawers-mode（CSS 强制折叠由样式层处理）
//  tablet 768–1023：drawers-mode
//  mobile <768：drawers-mode + mobile
// 折叠持久化：localStorage pa-side-collapsed / pa-bench-collapsed
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { mount } from '@vue/test-utils';
import { createPinia } from 'pinia';
import { nextTick } from 'vue';

import AppShell from '../../../../frontend/src/components/layout/AppShell.vue';

// mock fetch（health store 若被使用则不真发请求）
vi.stubGlobal('fetch', vi.fn(() => Promise.resolve(new Response('{}', { status: 200, headers: { 'Content-Type': 'application/json' } }))));

/** 用 matchMedia mock 设置视口宽度 */
function setViewport(w) {
  window.matchMedia = (q) => ({
    matches: false,
    media: q,
    onchange: null,
    addListener: vi.fn(),
    removeListener: vi.fn(),
    addEventListener: vi.fn(),
    removeEventListener: vi.fn(),
    dispatchEvent: vi.fn(),
  });
  Object.defineProperty(window, 'innerWidth', { configurable: true, writable: true, value: w });
}

async function mountShell(w = 1440) {
  setViewport(w);
  const pinia = createPinia();
  const wrapper = mount(AppShell, { global: { plugins: [pinia] } });
  await nextTick();
  return wrapper;
}

describe('AppShell 响应式四档断点', () => {
  beforeEach(() => {
    localStorage.clear();
  });

  it('desktop ≥1280px：三栏，无 drawers-mode；折叠 class 与 localStorage 联动', async () => {
    const w = await mountShell(1440);
    const shell = w.find('.app-shell');
    expect(shell.exists()).toBe(true);
    expect(shell.classes()).not.toContain('drawers-mode');
    expect(shell.classes()).not.toContain('mobile');

    // 默认展开
    expect(shell.classes()).not.toContain('side-collapsed');
    expect(shell.classes()).not.toContain('bench-collapsed');

    // 折叠把手点击 → side-collapsed + localStorage
    await w.find('.side-handle-btn').trigger('click');
    expect(w.find('.app-shell').classes()).toContain('side-collapsed');
    expect(localStorage.getItem('pa-side-collapsed')).toBe('1');
    await w.find('.side-handle-btn').trigger('click');
    expect(localStorage.getItem('pa-side-collapsed')).toBe('0');

    // bench 折叠（折叠入口按钮）
    await w.find('.bench-collapse-btn').trigger('click');
    expect(w.find('.app-shell').classes()).toContain('bench-collapsed');
    expect(localStorage.getItem('pa-bench-collapsed')).toBe('1');
    w.unmount();
  });

  it('折叠状态刷新后保持（localStorage 持久化）', async () => {
    localStorage.setItem('pa-side-collapsed', '1');
    localStorage.setItem('pa-bench-collapsed', '1');
    const w = await mountShell(1440);
    const cls = w.find('.app-shell').classes();
    expect(cls).toContain('side-collapsed');
    expect(cls).toContain('bench-collapsed');
    w.unmount();
  });

  it('laptop 1024–1279px：三栏保留（CSS 锁折叠），无 drawers-mode', async () => {
    const w = await mountShell(1180);
    const cls = w.find('.app-shell').classes();
    expect(cls).not.toContain('drawers-mode');
    expect(cls).not.toContain('mobile');
    // 折叠把手在笔记本档由 CSS 隐藏（类逻辑上仍可点击，但桌面外不提供）
    expect(w.find('.side-handle-btn').exists()).toBe(true);
    w.unmount();
  });

  it('tablet 768–1023px：drawers-mode（左右栏改抽屉），无 mobile', async () => {
    const w = await mountShell(900);
    const cls = w.find('.app-shell').classes();
    expect(cls).toContain('drawers-mode');
    expect(cls).not.toContain('mobile');
    expect(cls).toContain('has-tools');
    // 网格中的左右栏不再渲染（抽屉形态）
    expect(w.find('.aside-host').exists()).toBe(false);
    expect(w.find('.bench-wrap').exists()).toBe(false);
    // 抽屉组件存在（初始关闭）
    expect(w.findAllComponents({ name: 'Drawer' })).toBeTruthy();
    w.unmount();
  });

  it('mobile <768px：drawers-mode + mobile', async () => {
    const w = await mountShell(600);
    const cls = w.find('.app-shell').classes();
    expect(cls).toContain('drawers-mode');
    expect(cls).toContain('mobile');
    expect(w.find('.aside-host').exists()).toBe(false);
    expect(w.find('.bench-wrap').exists()).toBe(false);
    w.unmount();
  });

  it('汉堡按钮打开会话抽屉（<1024px）', async () => {
    const w = await mountShell(900);
    // 顶栏汉堡按钮（menuAvailable 为 true 时渲染）
    const burger = w.find('.top-bar .hamburger-btn');
    expect(burger.exists()).toBe(true);
    await burger.trigger('click');
    await nextTick();
    // Drawer 已打开（Teleport 到 body，用 document 查询）
    expect(document.querySelectorAll('.drawer.left.open').length).toBe(1);
    // Esc 关闭
    document.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape', bubbles: true }));
    await nextTick();
    expect(document.querySelectorAll('.drawer.left.open').length).toBe(0);
    w.unmount();
  });

  it('工作台按钮打开右抽屉（<1024px）', async () => {
    const w = await mountShell(900);
    const btn = w.find('.top-bar .bench-btn');
    expect(btn.exists()).toBe(true);
    await btn.trigger('click');
    await nextTick();
    expect(document.querySelectorAll('.drawer.right.open').length).toBe(1);
    // scrim 点击关闭
    document.querySelector('.drawer-scrim')?.dispatchEvent(new MouseEvent('click', { bubbles: true }));
    await nextTick();
    expect(document.querySelectorAll('.drawer.right.open').length).toBe(0);
    w.unmount();
  });
});