import { describe, expect, it, vi, afterEach } from 'vitest'
import { render, screen, fireEvent, cleanup } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { Input } from './Input'
import { TextField } from 'react-aria-components'

afterEach(() => {
  cleanup()
})

// Wrap Input in TextField for proper React Aria context
const renderInput = (props: React.ComponentProps<typeof Input>) => {
  return render(
    <TextField>
      <Input {...props} />
    </TextField>
  )
}

// Render Input standalone (without TextField) for testing Input's own behavior
const renderInputStandalone = (props: React.ComponentProps<typeof Input>) => {
  return render(<Input {...props} />)
}

describe('Input', () => {
  describe('props', () => {
    it('applies required attribute', () => {
      renderInput({ label: 'Email', required: true })
      expect(screen.getByRole('textbox')).toHaveProperty('required', true)
    })

    it('applies readOnly attribute', () => {
      renderInput({ label: 'Email', readOnly: true })
      expect(screen.getByRole('textbox')).toHaveProperty('readOnly', true)
    })

    it('applies placeholder for floating label when provided', () => {
      renderInput({ label: 'Email', placeholder: 'Enter email' })
      expect(screen.getByRole('textbox').getAttribute('placeholder')).toBe(
        'Enter email'
      )
    })

    it('applies empty placeholder for top label by default', () => {
      renderInput({ label: 'Email', labelPosition: 'top' })
      expect(screen.getByRole('textbox').getAttribute('placeholder')).toBe('')
    })

    it('applies custom id', () => {
      // Use standalone render since TextField overrides id via context
      renderInputStandalone({ label: 'Email', id: 'custom-id' })
      expect(screen.getByRole('textbox').getAttribute('id')).toBe('custom-id')
    })

    it('applies aria-describedby', () => {
      renderInput({ label: 'Email', 'aria-describedby': 'error-message' })
      expect(screen.getByRole('textbox').getAttribute('aria-describedby')).toBe(
        'error-message'
      )
    })
  })

  describe('clear content button', () => {
    it('does not show clear button when showClearContentIcon is false', () => {
      renderInput({
        label: 'Email',
        value: 'test',
        onChange: vi.fn(),
        showClearContentIcon: false,
      })
      expect(screen.queryByLabelText('Clear content')).toBeNull()
    })

    it('does not show clear button when input is empty', () => {
      renderInput({
        label: 'Email',
        value: '',
        onChange: vi.fn(),
        showClearContentIcon: true,
      })
      expect(screen.queryByLabelText('Clear content')).toBeNull()
    })

    it('shows clear button when input has value and showClearContentIcon is true', () => {
      renderInput({
        label: 'Email',
        value: 'test',
        onChange: vi.fn(),
        showClearContentIcon: true,
      })
      expect(screen.getByLabelText('Clear content')).toBeTruthy()
    })
  })

  describe('icons', () => {
    it('renders left icon when provided', () => {
      renderInput({
        label: 'Search',
        // eslint-disable-next-line formatjs/no-literal-string-in-jsx
        leftIcon: <span data-testid="left-icon">🔍</span>,
      })
      expect(screen.getByTestId('left-icon')).toBeTruthy()
    })

    it('renders right icon when provided', () => {
      renderInput({
        label: 'Password',
        // eslint-disable-next-line formatjs/no-literal-string-in-jsx
        rightIcon: <span data-testid="right-icon">👁</span>,
      })
      expect(screen.getByTestId('right-icon')).toBeTruthy()
    })

    it('hides right icon when clear button is shown', () => {
      renderInput({
        label: 'Email',
        value: 'test',
        onChange: vi.fn(),
        showClearContentIcon: true,
        // eslint-disable-next-line formatjs/no-literal-string-in-jsx
        rightIcon: <span data-testid="right-icon">👁</span>,
      })
      expect(screen.queryByTestId('right-icon')).toBeNull()
      expect(screen.getByLabelText('Clear content')).toBeTruthy()
    })

    it('shows right icon when clear button condition not met', () => {
      renderInput({
        label: 'Email',
        value: '',
        onChange: vi.fn(),
        showClearContentIcon: true,
        // eslint-disable-next-line formatjs/no-literal-string-in-jsx
        rightIcon: <span data-testid="right-icon">👁</span>,
      })
      expect(screen.getByTestId('right-icon')).toBeTruthy()
    })
  })

  describe('controlled input', () => {
    it('displays the controlled value', () => {
      renderInput({
        label: 'Email',
        value: 'test@example.com',
        onChange: vi.fn(),
      })
      expect(screen.getByRole('textbox')).toHaveProperty(
        'value',
        'test@example.com'
      )
    })

    it('calls onChange when typing', async () => {
      const onChange = vi.fn()
      renderInput({ label: 'Email', value: '', onChange })

      const input = screen.getByRole('textbox')
      await userEvent.type(input, 'a')

      expect(onChange).toHaveBeenCalled()
    })

    it('does not change value without onChange updating it', () => {
      const onChange = vi.fn()
      renderInput({ label: 'Email', value: 'initial', onChange })

      const input = screen.getByRole('textbox')
      fireEvent.change(input, { target: { value: 'changed' } })

      // Value stays the same because it's controlled
      expect(input).toHaveProperty('value', 'initial')
    })
  })

  describe('ref forwarding', () => {
    it('forwards ref to the input element', () => {
      const ref = { current: null as HTMLInputElement | null }
      render(
        <TextField>
          <Input label="Email" ref={ref} />
        </TextField>
      )
      expect(ref.current).toBeInstanceOf(HTMLInputElement)
    })

    it('allows focusing via ref', () => {
      const ref = { current: null as HTMLInputElement | null }
      render(
        <TextField>
          <Input label="Email" ref={ref} />
        </TextField>
      )
      ref.current?.focus()
      expect(document.activeElement).toBe(ref.current)
    })
  })
})