import { Children, createElement, isValidElement, type ReactNode } from 'react'
import { renderToStaticMarkup } from 'react-dom/server'
import { describe, expect, it, vi } from 'vitest'
import { TopBar } from '../src/components/TopBar'
import { TaskSidebar } from '../src/components/TaskSidebar'
import { selectWorkbenchLayout, type WorkbenchLayoutOptions } from '../src/workbenchLayout'
import { store } from '../src/store'

vi.mock('../src/store', () => {
  const state = {
    projects: [{ id: 'prj_1', name: '材料项目' }],
    tasks: [{ id: 'cnv_1', projectId: 'prj_1', title: '整理项目材料', updatedAt: '2026-10-12T10:00:00Z' }],
    me: null, adminSections: [], artifacts: [], cards: [], projectCards: [], serverWorkspaces: [],
    rdmAuditAvailable: false, currentConvId: 'cnv_1', currentProjectId: 'prj_1',
    ui: { theme: 'light', showArchived: false, rightCollapsed: true, rightTab: 'work' },
  }
  return { useStore: (select: (value: typeof state) => unknown) => select(state), store: {
    openInbox: vi.fn(), openFiles: vi.fn(), focusPending: vi.fn(), setUI: vi.fn(),
  } }
})

const desktop: WorkbenchLayoutOptions = {
  width: 1440, contextOpen: false, leftCollapsed: false, rightCollapsed: false,
  leftWidth: 260, rightWidth: 360, previewWidth: 700, rightTab: 'work',
  previewOpen: false, previewExpanded: false, filesView: 'list',
}

describe('selectWorkbenchLayout', () => {
  it.each([320, 390, 736])('shows one conversation pane at %ipx and keeps saved desktop widths unchanged', width => {
    const options = { ...desktop, width, leftWidth: 420, rightWidth: 560, rightCollapsed: true }
    const layout = selectWorkbenchLayout(options)
    expect(layout.compact).toBe(true)
    expect([layout.showContext, layout.showConversation, layout.showRight]).toEqual([false, true, false])
    expect(options.leftWidth).toBe(420)
    expect(options.rightWidth).toBe(560)
  })

  it('opens context on a narrow screen and returns to the existing conversation', () => {
    const options = { ...desktop, width: 390, rightCollapsed: true }
    expect(selectWorkbenchLayout({ ...options, contextOpen: true }).pane).toBe('context')
    expect(selectWorkbenchLayout({ ...options, contextOpen: false }).pane).toBe('conversation')
  })

  it('uses the same right pane for work and expanded file reading', () => {
    const work = selectWorkbenchLayout({ ...desktop, width: 390 })
    expect(work.pane).toBe('work')
    expect([work.showContext, work.showConversation, work.showRight]).toEqual([false, false, true])
    const files = selectWorkbenchLayout({ ...desktop, width: 390, rightTab: 'files', filesView: 'preview', previewOpen: true, previewExpanded: true })
    expect(files.pane).toBe('files')
    expect([files.showContext, files.showConversation, files.showRight]).toEqual([false, false, true])
    expect(files.previewExpanded).toBe(true)
    expect(files.rightWidth).toBe(382)
  })

  it('keeps the conversation visible after an expanded file pane is closed', () => {
    const layout = selectWorkbenchLayout({ ...desktop, rightTab: 'files', filesView: 'preview', previewOpen: true, previewExpanded: true, rightCollapsed: true })
    expect(layout.showConversation).toBe(true)
    expect(layout.showRight).toBe(false)
    expect(layout.previewExpanded).toBe(false)
  })

  it.each([1024, 1440])('fits stored oversized work panes inside %ipx while reserving conversation space', width => {
    const layout = selectWorkbenchLayout({ ...desktop, width, leftWidth: 4000, rightWidth: 4000 })
    expect(layout.compact).toBe(false)
    expect(layout.leftWidth).toBeGreaterThanOrEqual(220)
    expect(layout.leftWidth).toBeLessThanOrEqual(420)
    expect(layout.rightWidth).toBeGreaterThanOrEqual(280)
    expect(layout.rightWidth).toBeLessThanOrEqual(560)
    expect(layout.leftWidth + layout.rightWidth + 360 + 32).toBeLessThanOrEqual(width)
  })

  it('fits wide file reading at 1024px without discarding the conversation', () => {
    const layout = selectWorkbenchLayout({ ...desktop, width: 1024, leftWidth: 420, previewWidth: 1100, rightTab: 'files', filesView: 'preview', previewOpen: true })
    expect(layout.showConversation).toBe(true)
    expect(layout.rightWidth).toBeGreaterThanOrEqual(420)
    expect(layout.leftWidth + layout.rightWidth + 320 + 32).toBeLessThanOrEqual(1024)
  })

  it('enlarges desktop reading inside the existing right pane and rejects invalid saved widths', () => {
    const layout = selectWorkbenchLayout({ ...desktop, leftWidth: NaN, previewWidth: Infinity, rightTab: 'files', filesView: 'preview', previewOpen: true, previewExpanded: true })
    expect(layout.showConversation).toBe(false)
    expect(layout.showRight).toBe(true)
    expect(layout.previewExpanded).toBe(true)
    expect(Number.isFinite(layout.leftWidth + layout.rightWidth)).toBe(true)
    expect(layout.leftWidth + layout.rightWidth + 20).toBeLessThanOrEqual(1440)
  })
})

describe('workbench navigation', () => {
  function action(node: ReactNode, label: string): (() => void) | undefined {
    for (const child of Children.toArray(node)) {
      if (!isValidElement<{ children?: ReactNode; 'aria-label'?: string; onClick?: () => void }>(child)) continue
      if (child.props['aria-label'] === label) return child.props.onClick
      const found = action(child.props.children, label)
      if (found) return found
    }
  }

  it('keeps work and file entrances available when the auxiliary pane is closed', () => {
    const html = renderToStaticMarkup(createElement(TopBar))
    expect(html).toContain('aria-label="打开工作"')
    expect(html).toContain('aria-label="打开文件"')
  })

  it('offers a clear return to the conversation while reading a file on a narrow screen', () => {
    const html = renderToStaticMarkup(createElement<NonNullable<Parameters<typeof TopBar>[0]>>(TopBar, {
      compact: true, activePane: 'files', onConversation: () => undefined,
    }))
    expect(html).toContain('aria-label="返回对话"')
    for (const name of ['打开上下文', '打开工作', '打开文件']) expect(html).toContain(`aria-label="${name}"`)
  })

  it('opens ordinary work with all results reachable instead of only pending confirmations', () => {
    action(TopBar(), '打开工作')?.()
    expect(store.openInbox).toHaveBeenCalledOnce()
    expect(store.setUI).toHaveBeenCalledWith({ inboxFilter: 'all', previewExpanded: false })
  })

  it('connects both the return action and conversation navigation to the same return path', () => {
    const onConversation = vi.fn()
    const topbar = TopBar({ compact: true, activePane: 'files', onConversation })
    action(topbar, '返回对话')?.()
    action(topbar, '打开对话')?.()
    expect(onConversation).toHaveBeenCalledTimes(2)
  })

  it('names conversation creation accurately and exposes conversation selection to the keyboard', () => {
    const html = renderToStaticMarkup(createElement(TaskSidebar))
    expect(html).toContain('新建对话')
    expect(html).not.toContain('新建任务')
    expect(html).toMatch(/<button[^>]*class="tsb-task-open"/)
    expect(html).toContain('更多对话操作')
    expect(html.match(/材料项目/g)).toHaveLength(1)
  })
})