import assert from 'node:assert/strict'
import test from 'node:test'

import { executeSavedMutation } from '../src/app/mutation-refresh.ts'

test('a saved mutation stays successful when its refresh fails', async () => {
  const events = []
  const refreshFailure = new Error('refresh unavailable')

  const outcome = await executeSavedMutation({
    mutate: async () => {
      events.push('mutate')
      return { id: 'created-1' }
    },
    onSaved: (value) => events.push(`saved:${value.id}`),
    refresh: async (value) => {
      events.push(`refresh:${value.id}`)
      throw refreshFailure
    },
  })

  assert.deepEqual(events, ['mutate', 'saved:created-1', 'refresh:created-1'])
  assert.equal(outcome.value.id, 'created-1')
  assert.equal(outcome.refreshError, refreshFailure)
})

test('a failed mutation does not close its draft or attempt a refresh', async () => {
  const events = []
  const mutationFailure = new Error('save rejected')

  await assert.rejects(() => executeSavedMutation({
    mutate: async () => {
      events.push('mutate')
      throw mutationFailure
    },
    onSaved: () => events.push('saved'),
    refresh: async () => events.push('refresh'),
  }), mutationFailure)

  assert.deepEqual(events, ['mutate'])
})