/**
 * AppSidebar.spec.ts — unit tests for AppSidebar composition and mobile wiring.
 *
 * Strategy: mount with @vue/test-utils stubs for all heavy children (SidebarHeader,
 * SidebarNav, WorkspaceSwitcher, Drawer) so we test only:
 *   1. Renders the 3 child components (SidebarHeader, SidebarNav, WorkspaceSwitcher).
 *   2. Passes `groups` prop to SidebarNav.
 *   3. Mobile Drawer v-model:visible wires to shell.mobileOpen (get path).
 *   4. Drawer close (v-model:visible = false) calls shell.setMobileOpen(false).
 *   5. Drawer is NOT rendered when isMobile=false (desktop); IS rendered when isMobile=true.
 *   6. Desktop <aside> applies correct width class based on sidebarCollapsed.
 *
 * Stubs: Drawer is stubbed with a simple slot passthrough so we can inspect
 * whether its `visible` prop is correctly bound to the store.
 *
 * @vueuse/core is mocked so we can control isMobile per test context.
 */

import { createPinia, setActivePinia } from 'pinia'
import { mount } from '@vue/test-utils'
import { ref } from 'vue'
import { beforeEach, describe, expect, it, vi } from 'vitest'
import { useShellUiStore } from '@/stores/useShellUiStore'
import AppSidebar from '@/components-v2/layout/AppSidebar.vue'
import type { V2NavGroup } from '@/types/v2/nav'

// ---------------------------------------------------------------------------
// Mock @vueuse/core so we can control `isMobile` per test.
// AppSidebar uses useBreakpoints(breakpointsTailwind).smaller('lg').
// Vitest hoists vi.mock() above all imports, so the mock is registered
// before AppSidebar's transitive @vueuse/core import resolves; the
// factory only dereferences mockIsMobileRef inside .smaller(), invoked
// at component-mount time (well after this const initialises).
// ---------------------------------------------------------------------------

const mockIsMobileRef = ref(false)

vi.mock('@vueuse/core', () => ({
  breakpointsTailwind: {},
  useBreakpoints: () => ({
    smaller: (_: string) => mockIsMobileRef,
  }),
}))

// ---------------------------------------------------------------------------
// A minimal nav group fixture
// ---------------------------------------------------------------------------

const testGroups: V2NavGroup[] = [
  {
    label: 'Main',
    items: [
      { id: 'dashboard', label: 'Dashboard', icon: 'tabler-home', to: { name: 'dashboard' } },
    ],
  },
]

// ---------------------------------------------------------------------------
// Stubs
// ---------------------------------------------------------------------------

/**
 * DrawerStub exposes the same `visible` prop as PrimeVue Drawer and renders
 * its default slot so child components are mounted. It also emits
 * `update:visible` when the close method would fire, which mirrors the
 * v-model:visible contract.
 */
const DrawerStub = {
  name: 'Drawer',
  props: ['visible', 'position', 'pt'],
  emits: ['update:visible'],
  template: '<div class="drawer-stub" :data-visible="visible"><slot /></div>',
}

const globalStubs = {
  Drawer: DrawerStub,
  SidebarHeader: { name: 'SidebarHeader', template: '<div class="sidebar-header-stub" />' },
  SidebarNav: {
    name: 'SidebarNav',
    props: ['groups', 'collapsed'],
    template: '<div class="sidebar-nav-stub" :data-collapsed="collapsed" :data-groups-count="groups.length" />',
  },
  WorkspaceSwitcher: {
    name: 'WorkspaceSwitcher',
    props: ['collapsed'],
    template: '<div class="workspace-switcher-stub" />',
  },
}

function mountSidebar(groups: V2NavGroup[] = testGroups) {
  return mount(AppSidebar, {
    props: { groups },
    global: {
      plugins: [createPinia()],
      stubs: globalStubs,
    },
  })
}

describe('AppSidebar', () => {
  beforeEach(() => {
    setActivePinia(createPinia())

    // Default to desktop (isMobile=false) so most tests exercise the stable path
    mockIsMobileRef.value = false
  })

  // -------------------------------------------------------------------------
  // Child composition
  // -------------------------------------------------------------------------

  it('renders SidebarHeader', () => {
    const wrapper = mountSidebar()

    expect(wrapper.find('.sidebar-header-stub').exists()).toBe(true)
  })

  it('renders SidebarNav', () => {
    const wrapper = mountSidebar()

    expect(wrapper.find('.sidebar-nav-stub').exists()).toBe(true)
  })

  it('renders WorkspaceSwitcher', () => {
    const wrapper = mountSidebar()

    expect(wrapper.find('.workspace-switcher-stub').exists()).toBe(true)
  })

  it('passes groups prop to SidebarNav', () => {
    const wrapper = mountSidebar()
    const nav = wrapper.find('.sidebar-nav-stub')

    // Our stub renders data-groups-count from the groups prop
    expect(nav.attributes('data-groups-count')).toBe(String(testGroups.length))
  })

  // -------------------------------------------------------------------------
  // Drawer v-if: mount/unmount based on isMobile
  // -------------------------------------------------------------------------

  it('desktop (isMobile=false): Drawer is NOT rendered', () => {
    mockIsMobileRef.value = false

    const wrapper = mountSidebar()

    // v-if="isMobile" means the Drawer stub must be absent on desktop
    expect(wrapper.find('.drawer-stub').exists()).toBe(false)
  })

  it('mobile (isMobile=true): Drawer IS rendered', async () => {
    mockIsMobileRef.value = true

    const wrapper = mountSidebar()

    await wrapper.vm.$nextTick()

    expect(wrapper.find('.drawer-stub').exists()).toBe(true)
  })

  // -------------------------------------------------------------------------
  // Desktop <aside> width class based on sidebarCollapsed
  // -------------------------------------------------------------------------

  it('desktop: aside has w-64 class when sidebar is expanded', async () => {
    mockIsMobileRef.value = false

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.sidebarCollapsed = false

    await wrapper.vm.$nextTick()

    expect(wrapper.find('aside').classes()).toContain('w-64')
    expect(wrapper.find('aside').classes()).not.toContain('w-16')
  })

  it('desktop: aside has w-16 class when sidebar is collapsed', async () => {
    mockIsMobileRef.value = false

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.sidebarCollapsed = true

    await wrapper.vm.$nextTick()

    expect(wrapper.find('aside').classes()).toContain('w-16')
    expect(wrapper.find('aside').classes()).not.toContain('w-64')
  })

  // -------------------------------------------------------------------------
  // Mobile Drawer wiring (only exercised when isMobile=true)
  // -------------------------------------------------------------------------

  it('mobile: Drawer visible is true when shell.mobileOpen is true', async () => {
    mockIsMobileRef.value = true

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.mobileOpen = true

    await wrapper.vm.$nextTick()

    // The Drawer stub renders data-visible from its visible prop
    const drawer = wrapper.find('.drawer-stub')

    expect(drawer.attributes('data-visible')).toBe('true')
  })

  it('mobile: Drawer visible is false when shell.mobileOpen is false', async () => {
    mockIsMobileRef.value = true

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.mobileOpen = false

    await wrapper.vm.$nextTick()

    const drawer = wrapper.find('.drawer-stub')

    expect(drawer.attributes('data-visible')).toBe('false')
  })

  it('mobile: emitting update:visible false from Drawer calls shell.setMobileOpen(false)', async () => {
    mockIsMobileRef.value = true

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.mobileOpen = true

    const setMobileOpenSpy = vi.spyOn(shell, 'setMobileOpen')

    // Simulate the Drawer closing (v-model:visible setter)
    await wrapper.findComponent(DrawerStub).vm.$emit('update:visible', false)

    expect(setMobileOpenSpy).toHaveBeenCalledWith(false)
  })

  it('mobile: emitting update:visible true from Drawer calls shell.setMobileOpen(true)', async () => {
    mockIsMobileRef.value = true

    const wrapper = mountSidebar()
    const shell = useShellUiStore()

    shell.mobileOpen = false

    const setMobileOpenSpy = vi.spyOn(shell, 'setMobileOpen')

    await wrapper.findComponent(DrawerStub).vm.$emit('update:visible', true)

    expect(setMobileOpenSpy).toHaveBeenCalledWith(true)
  })
})