// @vitest-environment jsdom
import { cleanup, fireEvent, render, screen } from '@testing-library/react'
import { afterEach, describe, expect, it, vi } from 'vitest'
import { Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'

afterEach(cleanup)

describe('Tooltip', () => {
  it('shows the bubble to the right on hover and hides it on leave', () => {
    render(
      <Tooltip label="Open sidebar">
        <button type="button">anchor</button>
      </Tooltip>,
    )
    const anchor = screen.getByText('anchor')
    fireEvent.mouseEnter(anchor)
    const bubble = screen.getByRole('tooltip')
    expect(bubble.textContent).toBe('Open sidebar')
    expect(bubble.getAttribute('data-side')).toBe('right')
    // jsdom rects are all-zero: right placement lands at the +10 gutter.
    expect(bubble.style.left).toBe('10px')
    expect(bubble.style.top).toBe('0px')
    fireEvent.mouseLeave(anchor)
    expect(screen.queryByRole('tooltip')).toBeNull()
  })

  it('supports bottom placement and the focus/blur channel', () => {
    render(
      <Tooltip label="Below" side="bottom">
        <button type="button">anchor</button>
      </Tooltip>,
    )
    const anchor = screen.getByText('anchor')
    fireEvent.focus(anchor)
    const bubble = screen.getByRole('tooltip')
    expect(bubble.getAttribute('data-side')).toBe('bottom')
    expect(bubble.style.left).toBe('0px')
    expect(bubble.style.top).toBe('8px')
    fireEvent.blur(anchor)
    expect(screen.queryByRole('tooltip')).toBeNull()
  })

  it('chains the anchor\'s own handlers ahead of the tooltip\'s', () => {
    const onMouseEnter = vi.fn()
    const onMouseLeave = vi.fn()
    const onFocus = vi.fn()
    const onBlur = vi.fn()
    render(
      <Tooltip label="Chained">
        <button type="button" onMouseEnter={onMouseEnter} onMouseLeave={onMouseLeave} onFocus={onFocus} onBlur={onBlur}>anchor</button>
      </Tooltip>,
    )
    const anchor = screen.getByText('anchor')
    fireEvent.mouseEnter(anchor)
    fireEvent.mouseLeave(anchor)
    fireEvent.focus(anchor)
    fireEvent.blur(anchor)
    expect(onMouseEnter).toHaveBeenCalledOnce()
    expect(onMouseLeave).toHaveBeenCalledOnce()
    expect(onFocus).toHaveBeenCalledOnce()
    expect(onBlur).toHaveBeenCalledOnce()
  })

  it('suppresses the bubble while disabled without remounting the anchor', () => {
    const { rerender } = render(
      <Tooltip label="Rail" disabled>
        <button type="button">anchor</button>
      </Tooltip>,
    )
    const anchor = screen.getByText('anchor')
    fireEvent.mouseEnter(anchor)
    expect(screen.queryByRole('tooltip')).toBeNull()
    rerender(
      <Tooltip label="Rail">
        <button type="button">anchor</button>
      </Tooltip>,
    )
    // Same DOM node: toggling disabled never remounted the anchor.
    expect(screen.getByText('anchor')).toBe(anchor)
    fireEvent.mouseEnter(anchor)
    expect(screen.getByRole('tooltip')).toBeTruthy()
  })

  it('mouse leave hides the bubble immediately, even while the anchor stays focused', () => {
    render(
      <Tooltip label="Sticky">
        <button type="button">anchor</button>
      </Tooltip>,
    )
    const anchor = screen.getByText('anchor')
    // Focused AND hovered: leaving with the mouse drops the bubble at once.
    fireEvent.focus(anchor)
    fireEvent.mouseEnter(anchor)
    fireEvent.mouseLeave(anchor)
    expect(screen.queryByRole('tooltip')).toBeNull()
    // Re-entering shows it again; blurring while still hovered keeps it.
    fireEvent.mouseEnter(anchor)
    fireEvent.blur(anchor)
    expect(screen.getByRole('tooltip')).toBeTruthy()
    fireEvent.mouseLeave(anchor)
    expect(screen.queryByRole('tooltip')).toBeNull()
  })

  it('forwards the anchor element to the child ref (object and callback)', () => {
    const objectRef = { current: null as HTMLButtonElement | null }
    const callbackRef = vi.fn()
    const { rerender } = render(
      <Tooltip label="Add">
        <button type="button" ref={objectRef}>anchor</button>
      </Tooltip>,
    )
    expect(objectRef.current).toBe(screen.getByText('anchor'))
    // Tooltip's own positioning still works through the merged ref.
    fireEvent.mouseEnter(screen.getByText('anchor'))
    expect(screen.getByRole('tooltip')).toBeTruthy()
    rerender(
      <Tooltip label="Add">
        <button type="button" ref={callbackRef}>anchor</button>
      </Tooltip>,
    )
    expect(callbackRef).toHaveBeenCalledWith(screen.getByText('anchor'))
  })

  it('drops an already-visible bubble when disabled flips mid-hover', () => {
    const { rerender } = render(
      <Tooltip label="Rail">
        <button type="button">anchor</button>
      </Tooltip>,
    )
    fireEvent.mouseEnter(screen.getByText('anchor'))
    expect(screen.getByRole('tooltip')).toBeTruthy()
    // e.g. clicking a rail control expands the sidebar: no mouseleave fires.
    rerender(
      <Tooltip label="Rail" disabled>
        <button type="button">anchor</button>
      </Tooltip>,
    )
    expect(screen.queryByRole('tooltip')).toBeNull()
  })
})
