import { beforeEach, describe, expect, it } from 'vitest'
import {
  preferenceStorageKey,
  readLayoutPreference,
  reconcileOrder,
  removeLayoutPreference,
  writeLayoutPreference,
} from './uiLayoutPreference'

describe('UI layout preferences', () => {
  beforeEach(() => localStorage.clear())

  it('reconciles stored order with the current stable keys', () => {
    expect(reconcileOrder(['actions', 'name', 'status', 'createdAt'], ['status', 'removed', 'name', 'status']))
      .toEqual(['status', 'name', 'actions', 'createdAt'])
  })

  it('falls back safely when cached JSON is invalid', () => {
    localStorage.setItem(preferenceStorageKey('table', 'user-1', 'customers'), '{broken')
    expect(readLayoutPreference('table', 'user-1', 'customers', ['actions', 'name'], ['name']))
      .toEqual({ version: 1, order: ['actions', 'name'], hidden: ['name'] })
  })

  it('hides newly introduced default-hidden fields without overriding existing visibility choices', () => {
    writeLayoutPreference('table', 'user-1', 'roles', {
      version: 1,
      order: ['actions', 'role', 'status'],
      hidden: ['status'],
    })

    expect(readLayoutPreference(
      'table',
      'user-1',
      'roles',
      ['actions', 'role', 'roleCode', 'status'],
      ['roleCode', 'status'],
    )).toEqual({
      version: 1,
      order: ['actions', 'role', 'status', 'roleCode'],
      hidden: ['status', 'roleCode'],
    })

    writeLayoutPreference('table', 'user-1', 'roles', {
      version: 1,
      order: ['actions', 'role', 'roleCode', 'status'],
      hidden: [],
    })
    expect(readLayoutPreference(
      'table',
      'user-1',
      'roles',
      ['actions', 'role', 'roleCode', 'status'],
      ['roleCode'],
    ).hidden).toEqual([])
  })

  it('keeps preferences isolated by user and removes them on reset', () => {
    writeLayoutPreference('query', 'user-1', 'orders', { version: 1, order: ['status', 'keyword'], hidden: [] })
    expect(readLayoutPreference('query', 'user-1', 'orders', ['keyword', 'status']).order).toEqual(['status', 'keyword'])
    expect(readLayoutPreference('query', 'user-2', 'orders', ['keyword', 'status']).order).toEqual(['keyword', 'status'])

    removeLayoutPreference('query', 'user-1', 'orders')
    expect(readLayoutPreference('query', 'user-1', 'orders', ['keyword', 'status']).order).toEqual(['keyword', 'status'])
  })
})