import { describe, it, expect, beforeEach, vi } from 'vitest'
import { setActivePinia, createPinia } from 'pinia'
import { useAuthStore } from '@/stores/auth'
import { useMenuStore } from '@/stores/menus'

// mock 后端数据接口，避免真实网络请求
vi.mock('@/services/api', () => ({
  loadDataApi: vi.fn(),
}))

import { loadDataApi } from '@/services/api'

// 模块中心等系统管理员专用页面不进 s_menu（入口固定在 AppSidebar、路由层 adminOnly 拦截），
// 因此这里用业务菜单构造数据，验证菜单 store 本身无任何编码/账号特判。
const mockMenus = [
  {
    b_id: '1',
    b_code: 'base',
    b_name: '基础数据',
    b_menu_type: 'directory',
    b_parent_id: null,
    b_canuse: 1,
  },
  {
    b_id: '2',
    b_code: 'contact',
    b_name: '往来单位',
    b_menu_type: 'page',
    b_parent_id: '1',
    b_route: '/base/contact',
    b_canuse: 1,
  },
  {
    // 没有任何子项的目录：可见性裁剪后不应渲染
    b_id: '3',
    b_code: 'empty-dir',
    b_name: '空目录',
    b_menu_type: 'directory',
    b_parent_id: null,
    b_canuse: 1,
  },
]

function mockSModuleData(menus) {
  loadDataApi.mockImplementation((view) =>
    Promise.resolve({
      data: view === 's_menu' ? menus : [],
      code: 0,
      success: true,
    }),
  )
}

function setUser(account, id) {
  const auth = useAuthStore()
  auth.setSession({ token: 't', user: { id, account } }, 'ORG')
}

/** 冲刷微任务：让 setSession 触发的 watch(clear) 先执行 */
const flush = () => Promise.resolve()

function collectCodes(nodes) {
  const codes = []
  for (const node of nodes) {
    codes.push(String(node.b_code))
    if (node.children) codes.push(...collectCodes(node.children))
  }
  return codes
}

beforeEach(() => {
  setActivePinia(createPinia())
  loadDataApi.mockReset()
})

describe('menus store（s_menu 动态菜单）', () => {
  it('普通用户：全部启用菜单按树渲染，空目录剪枝（无编码特判）', async () => {
    mockSModuleData(mockMenus)
    setUser('u1', 123)
    await flush()
    const menus = useMenuStore()
    await menus.load()

    const codes = collectCodes(menus.visibleMenus)
    expect(codes).toContain('base')
    expect(codes).toContain('contact')
    // 目录没有可见子菜单时不渲染
    expect(codes).not.toContain('empty-dir')
  })

  it('管理员特判不在菜单 store：g3soft 与普通用户渲染一致', async () => {
    // 模块中心的管控在路由守卫（meta.adminOnly）与侧栏渲染（仅 g3soft 追加固定入口），
    // 菜单 store 对所有登录主体一视同仁
    mockSModuleData(mockMenus)
    setUser('g3soft', 1)
    await flush()
    const menus = useMenuStore()
    await menus.load()

    const codes = collectCodes(menus.visibleMenus)
    expect(codes).toHaveLength(2)
    expect(codes).toEqual(expect.arrayContaining(['base', 'contact']))
  })

  it('同一主体重复 load 不重复发请求', async () => {
    mockSModuleData(mockMenus)
    setUser('u1', 123)
    await flush()
    const menus = useMenuStore()
    await menus.load()
    await menus.load()
    expect(loadDataApi).toHaveBeenCalledTimes(1)
  })

  it('切换账号：缓存清空并重新加载', async () => {
    mockSModuleData(mockMenus)
    setUser('u1', 123)
    await flush()
    const menus = useMenuStore()
    await menus.load()
    expect(menus.rawMenus.length).toBe(mockMenus.length)

    // 切换到另一个主体：watch(clear) 清空已加载数据
    setUser('u2', 999)
    await flush()
    await flush()
    expect(menus.rawMenus.length).toBe(0)
    expect(menus.visibleMenus).toEqual([])

    // 新主体 load 重新拉取
    loadDataApi.mockClear()
    await menus.load()
    expect(menus.rawMenus.length).toBe(mockMenus.length)
  })
})