import test from 'node:test'
import assert from 'node:assert/strict'
import { loadPrefs, savePrefs } from '../src/lib/prefs.ts'

test('screen-off preference migrates old settings and survives unrelated updates', () => {
  const storage = new Map([['ituoke.prefs.v1', JSON.stringify({ connectHost: 'phone:1234' })]])
  globalThis.localStorage = {
    getItem: key => storage.get(key) ?? null,
    setItem: (key, value) => storage.set(key, value),
  }
  assert.equal(loadPrefs().screenOff, false)
  savePrefs({ screenOff: true })
  savePrefs({ theme: 'dark' })
  assert.equal(loadPrefs().screenOff, true)
  assert.equal(loadPrefs().connectHost, 'phone:1234')
  savePrefs({ screenOff: false })
  assert.equal(loadPrefs().screenOff, false)
  storage.set('ituoke.prefs.v1', JSON.stringify({ screenOff: 'true' }))
  assert.equal(loadPrefs().screenOff, false)
  delete globalThis.localStorage
})