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'

const mockMenus = [
  {
    b_id: '1',
    b_code: 'sys',
    b_name: '系统',
    b_menu_type: 'directory',
    b_parent_id: null,
    b_canuse: 1,
  },
  {
    b_id: '2',
    b_code: 'module',
    b_name: '模块管理',
    b_menu_type: 'page',
    b_parent_id: '1',
    b_route: '/module/module-management',
    b_canuse: 1,
  },
  {
    b_id: '3',
    b_code: 'menu',
    b_name: '菜单管理',
    b_menu_type: 'page',
    b_parent_id: '1',
    b_route: '/module/menu-management',
    b_canuse: 1,
  },
  {
    b_id: '4',
    b_code: 'i18n',
    b_name: '多语言类型',
    b_menu_type: 'page',
    b_parent_id: '1',
    b_route: '/module/i18n-type',
    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：隐藏编码 module 的菜单（含空目录剪枝）', async () => {
    mockSModuleData(mockMenus)
    setUser('u1', 123)
    await flush()
    const menus = useMenuStore()
    await menus.load()

    const codes = collectCodes(menus.visibleMenus)
    expect(codes).toContain('sys')
    expect(codes).toContain('menu')
    expect(codes).toContain('i18n')
    expect(codes).not.toContain('module')
  })

  it('普通用户：目录下仅剩 module 子项时，目录整体不渲染', async () => {
    // 系统目录下只有「模块管理」这一个可用子菜单
    mockSModuleData(mockMenus.filter((m) => m.b_code !== 'menu' && m.b_code !== 'i18n'))
    setUser('u1', 123)
    await flush()
    const menus = useMenuStore()
    await menus.load()

    expect(menus.visibleMenus).toEqual([])
  })

  it('g3soft：module 菜单可见', async () => {
    mockSModuleData(mockMenus)
    setUser('g3soft', 1)
    await flush()
    const menus = useMenuStore()
    await menus.load()

    expect(menus.isG3soft).toBe(true)
    expect(collectCodes(menus.visibleMenus)).toContain('module')
  })

  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)
  })
})