import assert from 'node:assert/strict'
import test from 'node:test'
import { ApiNetworkError, StaleSessionError } from '../src/api/errors'
import { invalidateSession } from '../src/api/authSession'
import { bindMeMutationApply, resetMeMutationQueueForTests, runMeMutation } from '../src/api/meMutationQueue'
import { clearExamAnswers, sectionIds, unansweredCount } from '../src/modules/gold-land/castle-exam/castleState'

const questions = [
  { id: 'castle-q1', sectionId: 'basics' },
  { id: 'castle-q2', sectionId: 'basics' },
  { id: 'castle-q5', sectionId: 'market' },
  { id: 'castle-q9', sectionId: 'choices' },
]

test('sections keep answers while moving and incomplete exams do not submit', () => {
  assert.deepEqual(sectionIds(questions), ['basics', 'market', 'choices'])
  let answers: Record<string, string> = { 'castle-q1': 'exchange' }
  answers = { ...answers, 'castle-q5': 'no' }
  assert.equal(answers['castle-q1'], 'exchange')
  assert.equal(unansweredCount(questions.map((question) => question.id), answers), 2)
  assert.equal(unansweredCount(questions.map((question) => question.id), answers) === 0, false)
})

test('network and session failures keep or clear exam answers without applying me', async () => {
  let answers: Record<string, string> = { 'castle-q1': 'exchange' }
  resetMeMutationQueueForTests()
  let applied = 0
  bindMeMutationApply(() => {
    applied += 1
    return true
  })
  await assert.rejects(() => runMeMutation(async () => { throw new ApiNetworkError() }), ApiNetworkError)
  assert.equal(answers['castle-q1'], 'exchange')
  await assert.rejects(() => runMeMutation(async () => {
    invalidateSession()
    answers = clearExamAnswers()
    return { me: { user: { coins: 1 } } }
  }), StaleSessionError)
  assert.equal(applied, 0)
  assert.deepEqual(answers, {})
})