import { beforeEach, describe, expect, it, vi } from 'vitest'

import { showFormValidationToast } from '@/lib/formValidationToast'
import { addToast } from '@/lib/toast'
import { texts } from '@/texts'

vi.mock('@/lib/toast', () => ({
  addToast: vi.fn(),
}))

describe('showFormValidationToast', () => {
  beforeEach(() => {
    vi.mocked(addToast).mockClear()
  })

  it('shows the first nested field message', () => {
    showFormValidationToast({
      profile: {
        mobile: { type: 'pattern', message: 'شماره موبایل معتبر نیست' },
      },
    })

    expect(addToast).toHaveBeenCalledWith({
      title: texts.common.formIncomplete,
      description: 'شماره موبایل معتبر نیست',
      color: 'danger',
    })
  })

  it('does not recurse into FieldError.ref circular graphs', () => {
    const parent: { child?: object } = {}
    const input = { tagName: 'INPUT', parentNode: parent }

    parent.child = input

    expect(() => {
      showFormValidationToast({
        mobile: {
          type: 'pattern',
          message: '',
          ref: input as never,
        },
        code: { type: 'required', message: 'کد را وارد کنید' },
      })
    }).not.toThrow()

    expect(addToast).toHaveBeenCalledWith({
      title: texts.common.formIncomplete,
      description: 'کد را وارد کنید',
      color: 'danger',
    })
  })

  it('tolerates self-referential error trees without throwing', () => {
    const errors: Record<string, unknown> = {}

    errors.root = errors
    errors.mobile = { type: 'required', message: 'شماره موبایل را وارد کنید' }

    expect(() => {
      showFormValidationToast(errors as never)
    }).not.toThrow()

    expect(addToast).toHaveBeenCalledWith({
      title: texts.common.formIncomplete,
      description: 'شماره موبایل را وارد کنید',
      color: 'danger',
    })
  })

  it('falls back when no message can be read safely', () => {
    const cyclic: Record<string, unknown> = {}

    cyclic.self = cyclic

    showFormValidationToast(cyclic as never)

    expect(addToast).toHaveBeenCalledWith({
      title: texts.common.formIncomplete,
      description: texts.common.formValidationDefault,
      color: 'danger',
    })
  })
})