import { fireEvent, render, screen } from '@testing-library/react'
import { describe, expect, it, vi } from 'vitest'
import NoteEditor from './NoteEditor'
import type { Note } from '../types/note'

const note: Note = { id: 42, title: 'Courses', content: 'Lait\nOeufs' }

const renderEdit = (overrides: Partial<Note> = {}) => {
  const onUpdate = vi.fn()
  const onDelete = vi.fn()
  render(
    <NoteEditor
      mode="edit"
      note={{ ...note, ...overrides }}
      onUpdate={onUpdate}
      onDelete={onDelete}
    />,
  )
  return { onUpdate, onDelete }
}

const renderCreate = () => {
  const onCreate = vi.fn()
  const onCancelCreate = vi.fn()
  render(<NoteEditor mode="create" onCreate={onCreate} onCancelCreate={onCancelCreate} />)
  return { onCreate, onCancelCreate }
}

describe('NoteEditor in edit mode', () => {
  it('displays the note title and content in read mode', () => {
    renderEdit()

    expect(screen.getByText('Courses')).toBeInTheDocument()
    expect(screen.getByText('Lait Oeufs')).toBeInTheDocument()
    expect(screen.getByRole('button', { name: 'Éditer' })).toBeInTheDocument()
  })

  it('shows placeholders for a note without title or content', () => {
    renderEdit({ title: '', content: '' })

    expect(screen.getByText('Sans titre')).toBeInTheDocument()
    expect(screen.getByText('Note vide')).toBeInTheDocument()
  })

  it('switches to edit mode with prefilled fields', () => {
    renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))

    expect(screen.getByLabelText('Titre')).toHaveValue('Courses')
    expect(screen.getByLabelText('Contenu')).toHaveValue('Lait\nOeufs')
    expect(screen.getByRole('button', { name: 'Enregistrer' })).toBeInTheDocument()
    expect(screen.getByRole('button', { name: 'Annuler' })).toBeInTheDocument()
  })

  it('saves edits and calls onUpdate with the updated values', () => {
    const { onUpdate } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: 'Liste de courses' } })
    fireEvent.change(screen.getByLabelText('Contenu'), { target: { value: 'Pain' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onUpdate).toHaveBeenCalledWith(42, { title: 'Liste de courses', content: 'Pain' })
    expect(screen.getByRole('button', { name: 'Éditer' })).toBeInTheDocument()
  })

  it('saves when the form is submitted', () => {
    const { onUpdate } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    const form = screen.getByLabelText('Titre').closest('form')!
    fireEvent.submit(form)

    expect(onUpdate).toHaveBeenCalledWith(42, { title: 'Courses', content: 'Lait\nOeufs' })
  })

  it('trims the title on save', () => {
    const { onUpdate } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: '  Courses  ' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onUpdate).toHaveBeenCalledWith(42, { title: 'Courses', content: 'Lait\nOeufs' })
  })

  it('refuses saving when the title is empty', () => {
    const { onUpdate } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: '' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onUpdate).not.toHaveBeenCalled()
    expect(screen.getByText('Le titre est obligatoire.')).toBeInTheDocument()
    expect(screen.getByLabelText('Titre')).toHaveAttribute('aria-invalid', 'true')
  })

  it('clears the title error once a title is typed', () => {
    renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: '' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))
    expect(screen.getByText('Le titre est obligatoire.')).toBeInTheDocument()

    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: 'Rempli' } })

    expect(screen.queryByText('Le titre est obligatoire.')).not.toBeInTheDocument()
  })

  it('cancels editing without calling onUpdate', () => {
    const { onUpdate } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Éditer' }))
    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: 'Non sauvegardé' } })
    fireEvent.click(screen.getByRole('button', { name: 'Annuler' }))

    expect(onUpdate).not.toHaveBeenCalled()
    expect(screen.getByText('Courses')).toBeInTheDocument()
  })

  it('opens the delete confirmation when the × button is clicked', () => {
    renderEdit()
    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()

    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))

    expect(screen.getByRole('dialog', { name: 'Supprimer la note ?' })).toBeInTheDocument()
  })

  it('deletes the note after confirmation', () => {
    const { onDelete } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))
    fireEvent.click(screen.getByRole('button', { name: 'Supprimer' }))

    expect(onDelete).toHaveBeenCalledWith(42)
    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
  })

  it('does not delete when the confirmation is cancelled', () => {
    const { onDelete } = renderEdit()

    fireEvent.click(screen.getByRole('button', { name: 'Supprimer la note' }))
    fireEvent.click(screen.getByRole('button', { name: 'Annuler' }))

    expect(onDelete).not.toHaveBeenCalled()
    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
  })
})

describe('NoteEditor in create mode', () => {
  it('renders an empty form without read view or delete button', () => {
    renderCreate()

    expect(screen.getByLabelText('Titre')).toHaveValue('')
    expect(screen.getByLabelText('Contenu')).toHaveValue('')
    expect(screen.getByRole('button', { name: 'Enregistrer' })).toBeInTheDocument()
    expect(screen.queryByRole('button', { name: 'Éditer' })).not.toBeInTheDocument()
    expect(screen.queryByRole('button', { name: 'Supprimer la note' })).not.toBeInTheDocument()
  })

  it('creates the note with title and content on save', () => {
    const { onCreate } = renderCreate()

    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: 'Courses' } })
    fireEvent.change(screen.getByLabelText('Contenu'), { target: { value: 'Lait' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onCreate).toHaveBeenCalledWith('Courses', 'Lait')
  })

  it('trims the title on create', () => {
    const { onCreate } = renderCreate()

    fireEvent.change(screen.getByLabelText('Titre'), { target: { value: '  Courses  ' } })
    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onCreate).toHaveBeenCalledWith('Courses', '')
  })

  it('refuses creation when the title is empty', () => {
    const { onCreate } = renderCreate()

    fireEvent.click(screen.getByRole('button', { name: 'Enregistrer' }))

    expect(onCreate).not.toHaveBeenCalled()
    expect(screen.getByText('Le titre est obligatoire.')).toBeInTheDocument()
  })

  it('cancels creation without creating the note', () => {
    const { onCreate, onCancelCreate } = renderCreate()

    fireEvent.click(screen.getByRole('button', { name: 'Annuler' }))

    expect(onCreate).not.toHaveBeenCalled()
    expect(onCancelCreate).toHaveBeenCalled()
  })
})