SHiNE-server/shine-UI/js/pages/register-view.js

import { renderHeader } from '../components/header.js';
import { authService, clearAuthMessages, state } from '../state.js';
import { toUserMessage } from '../services/ui-error-texts.js';
import {
  checkLoginExistsOnSolana,
  formatSolanaErrorDetails,
  precheckLoginClassOnSolana,
} from '../services/solana-register-service.js';
import {
  composePasswordFromWords,
  emptyPasswordWords,
  normalizePasswordWords,
  PASSWORD_MAX_LENGTH,
  PASSWORD_WORDS_COUNT,
} from '../services/password-words.js';
import { sha256Text } from '../services/crypto-utils.js';
import { openRegistrationFaq } from './registration-faq-view.js';

export const pageMeta = { id: 'register-view', title: 'Зарегистрироваться', showAppChrome: false };
// ВРЕМЕННАЯ UI-ЗАГЛУШКА:
// пока полноценная логика продажи/выдачи коротких имён не внедрена on-chain,
// UI пускает логины 5..7 символов только по временному коду.
const TEMP_MIN_LOGIN_WITHOUT_PROMO = 8;
const TEMP_ABSOLUTE_MIN_LOGIN_LEN = 5;
const TEMP_PROMO_HASH_HEX = 'a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3';

function bytesToHex(bytes) {
  return Array.from(bytes || [], (b) => b.toString(16).padStart(2, '0')).join('');
}

async function isTemporaryPromoAccepted(value) {
  const digest = await sha256Text(String(value || ''));
  return bytesToHex(digest) === TEMP_PROMO_HASH_HEX;
}

function normalizeLoginForTemporaryUiGuard(login) {
  const source = String(login || '').trim();
  if (!source || source.length > 20) return null;
  let normalized = '';
  for (const ch of source) {
    if (ch === '_') continue;
    if (!/[0-9A-Za-z]/.test(ch)) return null;
    normalized += ch.toLowerCase();
  }
  if (!normalized || normalized.length > 20) return null;
  return normalized;
}

function createWordsLayout({ words, onInput }) {
  const section = document.createElement('div');
  section.className = 'registration-words-block';

  const grid = document.createElement('div');
  grid.className = 'registration-words-grid';

  const inputs = Array.from({ length: PASSWORD_WORDS_COUNT }, (_, index) => {
    const row = document.createElement('label');
    row.className = 'registration-word-row';

    const number = document.createElement('span');
    number.className = 'registration-word-number';
    number.textContent = `${index + 1}.`;

    const input = document.createElement('input');
    input.className = 'input registration-word-input';
    input.type = 'text';
    input.autocomplete = 'off';
    input.autocapitalize = 'off';
    input.spellcheck = false;
    input.maxLength = 32;
    input.value = words[index];
    input.addEventListener('input', () => onInput(index, input.value));

    row.append(number, input);
    grid.append(row);
    return input;
  });

  const hint = document.createElement('p');
  hint.className = 'meta-muted';
  hint.textContent =
    'Здесь можно ввести любые слова на любых языках. Мы не проверяем орфографию. Можно заполнить все 12 полей или только часть. В конце всё склеивается в один пароль длиной до 256 символов.';

  const preview = document.createElement('p');
  preview.className = 'status-line';

  section.append(grid, hint);
  return { section, inputs, preview };
}

function makePasswordToggleIcons() {
  return {
    eye: `
      <svg class="key-toggle-icon" viewBox="0 0 24 24" aria-hidden="true" focusable="false">
        <path d="M2.4 12s3.6-6.5 9.6-6.5S21.6 12 21.6 12s-3.6 6.5-9.6 6.5S2.4 12 2.4 12Z" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linejoin="round"/>
        <circle cx="12" cy="12" r="2.9" fill="none" stroke="currentColor" stroke-width="1.8"/>
      </svg>
    `,
    eyeOff: `
      <svg class="key-toggle-icon" viewBox="0 0 24 24" aria-hidden="true" focusable="false">
        <path d="M3 4l18 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round"/>
        <path d="M2.4 12s3.6-6.5 9.6-6.5c2.4 0 4.5.8 6.1 1.9" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linejoin="round"/>
        <path d="M21.6 12s-3.6 6.5-9.6 6.5c-2.4 0-4.5-.8-6.1-1.9" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linejoin="round"/>
      </svg>
    `,
  };
}

export function render({ navigate }) {
  const screen = document.createElement('section');
  screen.className = 'stack registration-screen';

  clearAuthMessages();

  const form = document.createElement('div');
  form.className = 'card stack registration-form';

  let passwordMode = String(state.registrationDraft.passwordMode || 'single') === 'words' ? 'words' : 'single';
  let passwordWords = normalizePasswordWords(state.registrationDraft.passwordWords);
  let passwordWordsLinked = Boolean(state.registrationDraft.passwordWordsLinked);
  let usePromoCode = Boolean(state.registrationDraft.usePromoCode);
  let loginCheckTimer = 0;
  let loginCheckRunId = 0;

  const loginInput = document.createElement('input');
  loginInput.className = 'input';
  loginInput.type = 'text';
  loginInput.autocomplete = 'off';
  loginInput.autocapitalize = 'off';
  loginInput.spellcheck = false;
  loginInput.value = state.registrationDraft.login;
  loginInput.placeholder = 'Введите логин';

  const passwordInput = document.createElement('input');
  passwordInput.className = 'input';
  passwordInput.type = 'password';
  passwordInput.name = 'shine-register-password';
  passwordInput.autocomplete = 'new-password';
  passwordInput.autocapitalize = 'off';
  passwordInput.spellcheck = false;
  passwordInput.maxLength = PASSWORD_MAX_LENGTH;
  passwordInput.value = String(state.registrationDraft.password || '');
  passwordInput.placeholder = 'Введите пароль';

  const passwordIcons = makePasswordToggleIcons();

  const passwordToggleButton = document.createElement('button');
  passwordToggleButton.className = 'icon-btn key-toggle-btn registration-password-toggle';
  passwordToggleButton.type = 'button';
  passwordToggleButton.setAttribute('aria-label', 'Показать пароль');
  passwordToggleButton.setAttribute('title', 'Показать пароль');
  passwordToggleButton.innerHTML = passwordIcons.eyeOff;

  const passwordInputRow = document.createElement('div');
  passwordInputRow.className = 'inline-input-row';
  passwordInputRow.append(passwordInput, passwordToggleButton);

  const {
    section: wordsSection,
    inputs: wordInputs,
    preview: wordsPreview,
  } = createWordsLayout({
    words: passwordWords,
    onInput: (index, value) => {
      passwordWords[index] = value;
      passwordInput.value = composePasswordFromWords(passwordWords);
      passwordWordsLinked = true;
      syncDraftState();
      updateWordsPreview();
    },
  });

  const passwordModeToggle = document.createElement('label');
  passwordModeToggle.className = 'registration-toggle';

  const passwordModeCheckbox = document.createElement('input');
  passwordModeCheckbox.type = 'checkbox';
  passwordModeCheckbox.checked = passwordMode === 'words';

  const passwordModeLabel = document.createElement('span');
  passwordModeLabel.textContent = 'Представить пароль в виде 12 слов';

  passwordModeToggle.append(passwordModeCheckbox, passwordModeLabel);

  const promoToggle = document.createElement('label');
  promoToggle.className = 'registration-toggle';

  const promoCheckbox = document.createElement('input');
  promoCheckbox.type = 'checkbox';
  promoCheckbox.checked = usePromoCode;

  const promoToggleLabel = document.createElement('span');
  promoToggleLabel.textContent = 'У меня есть промокод';

  promoToggle.append(promoCheckbox, promoToggleLabel);

  const promoField = document.createElement('label');
  promoField.className = 'stack';

  const promoFieldLabel = document.createElement('span');
  promoFieldLabel.className = 'field-label';
  promoFieldLabel.textContent = 'Промокод';

  const promoInput = document.createElement('input');
  promoInput.className = 'input';
  promoInput.type = 'text';
  promoInput.autocomplete = 'off';
  promoInput.autocapitalize = 'off';
  promoInput.spellcheck = false;
  promoInput.value = String(state.registrationDraft.promoCode || '');
  promoInput.placeholder = 'Вставьте промокод';

  const promoHint = document.createElement('p');
  promoHint.className = 'meta-muted';
  promoHint.textContent = 'Временный режим: логины длиной 5-7 символов доступны только по специальному коду. Любое другое значение считается неверным промокодом.';

  promoField.append(promoFieldLabel, promoInput, promoHint);

  const statusText = document.createElement('p');
  statusText.className = 'status-line registration-login-status';
  statusText.style.display = 'none';

  const formError = document.createElement('p');
  formError.className = 'status-line is-unavailable';
  formError.style.display = 'none';

  // Компактная ссылка на экран «Вопросы о регистрации» (registration-faq-view).
  const faqButton = document.createElement('button');
  faqButton.className = 'registration-faq-link';
  faqButton.type = 'button';
  faqButton.textContent = 'Вопросы о регистрации';
  faqButton.addEventListener('click', () => openRegistrationFaq(navigate, 'key-derivation'));

  const actions = document.createElement('div');
  actions.className = 'auth-footer-actions';

  const nextButton = document.createElement('button');
  nextButton.className = 'primary-btn';
  nextButton.type = 'button';
  nextButton.textContent = 'Далее';

  let passwordField = null;
  const passwordLengthText = document.createElement('p');
  passwordLengthText.className = 'password-length-hint';
  let lastCheckedLogin = '';
  let lastCheckedFree = false;
  let lastCheckedClassName = '';
  let generationRunId = 0;

  function getCurrentPassword() {
    return String(passwordInput.value || '');
  }

  function updateWordsPreview() {
    const password = passwordMode === 'words'
      ? composePasswordFromWords(passwordWords)
      : String(passwordInput.value || '');
    const text = `Итоговая длина пароля: ${password.length} символов.`;
    wordsPreview.textContent = text;
    passwordLengthText.textContent = text;
  }

  function setStatusMessage(message, kind = '') {
    statusText.textContent = message;
    statusText.className = kind ? `status-line registration-login-status ${kind}` : 'status-line registration-login-status';
    statusText.style.display = message ? '' : 'none';
  }

  function resetLoginCheckState() {
    lastCheckedLogin = '';
    lastCheckedFree = false;
    lastCheckedClassName = '';
    loginCheckRunId += 1;
    if (loginCheckTimer) {
      window.clearTimeout(loginCheckTimer);
      loginCheckTimer = 0;
    }
  }

  function scheduleAvailabilityCheck() {
    resetLoginCheckState();
    setStatusMessage('');
    if (!loginInput.value.trim()) return;
    loginCheckTimer = window.setTimeout(() => {
      loginCheckTimer = 0;
      runAvailabilityCheck({ automatic: true }).catch(() => {});
    }, 1500);
  }

  function togglePasswordVisibility() {
    const reveal = passwordInput.type === 'password';
    passwordInput.type = reveal ? 'text' : 'password';
    passwordToggleButton.innerHTML = reveal ? passwordIcons.eye : passwordIcons.eyeOff;
    passwordToggleButton.setAttribute('aria-label', reveal ? 'Скрыть пароль' : 'Показать пароль');
    passwordToggleButton.setAttribute('title', reveal ? 'Скрыть пароль' : 'Показать пароль');
  }

  function updatePasswordModeVisibility() {
    const wordsMode = passwordMode === 'words';
    wordsSection.style.display = wordsMode ? 'grid' : 'none';
    if (passwordField) passwordField.style.display = 'grid';
    passwordInputRow.style.display = 'grid';
    updateWordsPreview();
  }

  function syncDraftState() {
    state.registrationDraft.login = String(loginInput.value.trim());
    state.registrationDraft.passwordMode = passwordMode;
    state.registrationDraft.passwordWords = normalizePasswordWords(passwordWords);
    state.registrationDraft.passwordWordsLinked = passwordWordsLinked;
    state.registrationDraft.password = getCurrentPassword();
    state.registrationDraft.usePromoCode = usePromoCode;
    state.registrationDraft.promoCode = String(promoInput.value || '').trim();
  }

  function updatePromoVisibility() {
    promoField.style.display = usePromoCode ? 'grid' : 'none';
  }

  async function runAvailabilityCheck({ automatic = false } = {}) {
    const runId = ++loginCheckRunId;
    const login = loginInput.value.trim();
    const promoCode = String(promoInput.value || '').trim();
    if (!login) {
      setStatusMessage(automatic ? '' : 'Введите логин');
      formError.style.display = 'none';
      return false;
    }

    const normalizedLogin = normalizeLoginForTemporaryUiGuard(login);
    if (!normalizedLogin) {
      setStatusMessage('Логин содержит недопустимые символы или имеет неверную длину ❌', 'is-unavailable');
      formError.style.display = 'none';
      return false;
    }

    if (normalizedLogin.length < TEMP_ABSOLUTE_MIN_LOGIN_LEN) {
      setStatusMessage(`Логин должен быть не короче ${TEMP_ABSOLUTE_MIN_LOGIN_LEN} символов ❌`, 'is-unavailable');
      formError.style.display = 'none';
      return false;
    }

    const wantsShortLogin = normalizedLogin.length < TEMP_MIN_LOGIN_WITHOUT_PROMO;
    let promoAccepted = false;
    if (usePromoCode) {
      if (!promoCode) {
        setStatusMessage('Введите промокод ❌', 'is-unavailable');
        formError.style.display = 'none';
        return false;
      }
      promoAccepted = await isTemporaryPromoAccepted(promoCode);
      if (!promoAccepted) {
        setStatusMessage('Неверный промокод ❌', 'is-unavailable');
        formError.style.display = 'none';
        return false;
      }
    } else if (wantsShortLogin) {
      setStatusMessage(`Логины короче ${TEMP_MIN_LOGIN_WITHOUT_PROMO} символов временно доступны только по специальному коду ❌`, 'is-unavailable');
      formError.style.display = 'none';
      return false;
    }

    if (login === lastCheckedLogin) {
      if (!lastCheckedFree) {
        setStatusMessage('Логин уже занят ❌', 'is-unavailable');
      } else if (lastCheckedClassName === 'promo') {
        setStatusMessage('Логин свободен ✅ Временный код принят', 'is-available');
      } else if (lastCheckedClassName === 'free') {
        setStatusMessage('Логин свободен ✅', 'is-available');
      } else if (lastCheckedClassName === 'premium') {
        setStatusMessage('Логин свободен, но это премиум-логин (покупка через DAO) ❌', 'is-unavailable');
      } else if (lastCheckedClassName === 'company') {
        setStatusMessage('Логин свободен, но относится к компании/бренду (отдельное согласование) ❌', 'is-unavailable');
      } else {
        setStatusMessage('Логин нельзя использовать для обычной регистрации ❌', 'is-unavailable');
      }
      formError.style.display = 'none';
      return lastCheckedFree && (lastCheckedClassName === 'free' || lastCheckedClassName === 'promo');
    }

    setStatusMessage('Проверяем логин...');
    try {
      const check = await checkLoginExistsOnSolana({
        login,
        solanaEndpoint: state.entrySettings.solanaServer,
      });
      if (runId !== loginCheckRunId) return false;
      const isFree = !check.exists;
      let className = '';
      if (isFree) {
        if (promoAccepted) {
          className = 'promo';
        } else {
          try {
            const precheck = await precheckLoginClassOnSolana({
              login,
              solanaEndpoint: state.entrySettings.solanaServer,
            });
            className = precheck.className;
          } catch (precheckError) {
            className = 'free';
            console.warn('Solana login precheck fallback to free', formatSolanaErrorDetails(precheckError));
          }
        }
      }
      lastCheckedLogin = login;
      lastCheckedFree = isFree;
      lastCheckedClassName = className;
      if (!isFree) {
        setStatusMessage('Логин уже занят ❌', 'is-unavailable');
      } else if (className === 'promo') {
        setStatusMessage('Логин свободен ✅ Временный код принят', 'is-available');
      } else if (className === 'free') {
        setStatusMessage('Логин свободен ✅', 'is-available');
      } else if (className === 'premium') {
        setStatusMessage('Логин свободен, но это премиум-логин (покупка через DAO) ❌', 'is-unavailable');
      } else if (className === 'company') {
        setStatusMessage('Логин свободен, но относится к компании/бренду (отдельное согласование) ❌', 'is-unavailable');
      } else {
        setStatusMessage('Логин нельзя использовать для обычной регистрации ❌', 'is-unavailable');
      }
      formError.style.display = 'none';
      return isFree && (className === 'free' || className === 'promo');
    } catch (error) {
      if (runId !== loginCheckRunId) return false;
      const base = toUserMessage(error, 'Не удалось проверить логин');
      const details = formatSolanaErrorDetails(error);
      setStatusMessage(`${base}. Детали: ${details}`, 'is-unavailable');
      return false;
    }
  }

  passwordToggleButton.addEventListener('click', togglePasswordVisibility);

  loginInput.addEventListener('input', () => {
    syncDraftState();
    scheduleAvailabilityCheck();
  });

  passwordInput.addEventListener('input', () => {
    if (passwordWordsLinked && String(passwordInput.value || '') !== composePasswordFromWords(passwordWords)) {
      passwordWords = emptyPasswordWords();
      passwordWordsLinked = false;
      wordInputs.forEach((input) => {
        input.value = '';
      });
    }
    syncDraftState();
    updateWordsPreview();
  });

  passwordModeCheckbox.addEventListener('change', () => {
    const nextMode = passwordModeCheckbox.checked ? 'words' : 'single';
    if (nextMode === passwordMode) return;
    if (nextMode === 'words') {
      if (!passwordWordsLinked) {
        passwordWords = emptyPasswordWords();
        wordInputs.forEach((input) => {
          input.value = '';
        });
      } else {
        passwordInput.value = composePasswordFromWords(passwordWords);
      }
    } else if (passwordWordsLinked) {
      passwordInput.value = composePasswordFromWords(passwordWords);
    }
    passwordMode = nextMode;
    updatePasswordModeVisibility();
    updateWordsPreview();
    syncDraftState();
  });

  promoCheckbox.addEventListener('change', () => {
    usePromoCode = promoCheckbox.checked;
    resetLoginCheckState();
    updatePromoVisibility();
    syncDraftState();
    if (usePromoCode) {
      setStatusMessage('Временный код включён: для логинов 5-7 символов будет локальная проверка', 'is-available');
    } else {
      setStatusMessage('');
      scheduleAvailabilityCheck();
    }
  });

  promoInput.addEventListener('input', () => {
    resetLoginCheckState();
    syncDraftState();
    if (usePromoCode) scheduleAvailabilityCheck();
  });

  nextButton.addEventListener('click', async () => {
    formError.style.display = 'none';
    const promoCode = String(promoInput.value || '').trim();
    if (usePromoCode && !promoCode) {
      formError.textContent = 'Если включён временный код, поле должно быть заполнено.';
      formError.style.display = '';
      return;
    }
    const isFree = await runAvailabilityCheck();
    if (!isFree) return;

    const prevLogin = String(state.registrationDraft.login || '');
    const prevPassword = String(state.registrationDraft.password || '');
    const nextLogin = String(loginInput.value.trim());
    const nextPassword = getCurrentPassword();
    if (nextPassword.length === 0) {
      formError.textContent = 'Пустой пароль запрещён. Введите непустой пароль для регистрации.';
      formError.style.display = '';
      return;
    }
    if (nextPassword.length > PASSWORD_MAX_LENGTH) {
      formError.textContent = `Пароль получился слишком длинным. Максимальная длина: ${PASSWORD_MAX_LENGTH} символов.`;
      formError.style.display = '';
      return;
    }
    const credsChanged = prevLogin !== nextLogin || prevPassword !== nextPassword;

    state.registrationDraft.login = nextLogin;
    state.registrationDraft.password = nextPassword;
    state.registrationDraft.passwordMode = passwordMode;
    state.registrationDraft.passwordWords = normalizePasswordWords(passwordWords);
    state.registrationDraft.passwordWordsLinked = passwordWordsLinked;
    state.registrationDraft.usePromoCode = usePromoCode;
    state.registrationDraft.promoCode = promoCode;
    if (credsChanged) {
      state.registrationDraft.preGeneratedKeyBundle = null;
    }

    startGenerationStage();
  });

  function renderInputStage() {
    form.innerHTML = '';
    const loginField = document.createElement('label');
    loginField.className = 'stack';
    loginField.innerHTML = '<span class="field-label">Логин</span>';
    const passwordLabel = document.createElement('label');
    passwordLabel.className = 'stack registration-password-single';
    passwordLabel.innerHTML = '<span class="field-label">Пароль</span>';
    form.append(loginField, statusText, passwordLabel);
    passwordField = passwordLabel;
    loginField.append(loginInput);
    passwordField.append(passwordInputRow);
    form.append(passwordModeToggle, promoToggle, promoField, passwordLengthText, wordsSection, formError, faqButton);
    actions.innerHTML = '';
    actions.append(nextButton);
    updatePasswordModeVisibility();
    updatePromoVisibility();
    syncDraftState();
  }

  async function startGenerationStage() {
    const runId = ++generationRunId;
    form.innerHTML = '';

    const title = document.createElement('p');
    title.className = 'auth-copy';
    title.textContent = 'Для повышения безопасности мы генерируем секрет из вашего логина и пароля с помощью Argon2id.';

    const subtitle = document.createElement('p');
    subtitle.className = 'meta-muted';
    subtitle.textContent = 'Процесс запускается сразу: из этого секрета будут вычислены recovery key, root key, blockchain key и client key.';

    const details = document.createElement('p');
    details.className = 'meta-muted';
    details.textContent = 'Параметры: t=2, m=65536 KiB (64 MB), p=1, dkLen=32.';

    const details2 = document.createElement('p');
    details2.className = 'meta-muted';
    details2.textContent = 'Замедление нужно специально: оно усложняет подбор пароля и повышает цену атак на видеокартах и GPU.';

    const details3 = document.createElement('p');
    details3.className = 'meta-muted';
    details3.textContent = `Длина вашего текущего пароля: ${getCurrentPassword().length} символов.`;

    const progressWrap = document.createElement('div');
    progressWrap.className = 'registration-progress';

    const progressBar = document.createElement('div');
    progressBar.className = 'registration-progress-bar';
    progressWrap.append(progressBar);

    const progressText = document.createElement('p');
    progressText.className = 'meta-muted';
    progressText.textContent = 'Подготовка...';

    const genError = document.createElement('p');
    genError.className = 'status-line is-unavailable';
    genError.style.display = 'none';

    form.append(title, subtitle, details, details2, details3, progressWrap, progressText, genError);

    const cancelBtn = document.createElement('button');
    cancelBtn.className = 'ghost-btn';
    cancelBtn.type = 'button';
    cancelBtn.textContent = 'Отмена';
    cancelBtn.addEventListener('click', () => {
      generationRunId += 1;
      renderInputStage();
    });
    actions.innerHTML = '';
    actions.append(cancelBtn);

    try {
      if (!state.registrationDraft.preGeneratedKeyBundle) {
        const keyBundle = await authService.derivePasswordKeyBundle(
          state.registrationDraft.login,
          state.registrationDraft.password,
          {
            onProgress: ({ percent, message }) => {
              if (runId !== generationRunId) return;
              const safePercent = Math.max(0, Math.min(100, Number(percent) || 0));
              progressBar.style.width = `${safePercent}%`;
              progressText.textContent = `${safePercent}% · ${String(message || '').trim()}`;
            },
            isCancelled: () => runId !== generationRunId,
          },
        );
        if (runId !== generationRunId) return;
        state.registrationDraft.preGeneratedKeyBundle = keyBundle;
      }
      if (runId !== generationRunId) return;
      progressBar.style.width = '100%';
      progressText.textContent = '100%';
      title.textContent = 'Ключи сгенерированы';
      window.setTimeout(() => navigate('registration-payment-view'), 350);
    } catch (error) {
      if (runId !== generationRunId) return;
      if (String(error?.message || '') === 'DERIVE_CANCELLED') {
        renderInputStage();
        return;
      }
      genError.textContent = `Ошибка генерации ключей: ${error?.message || 'неизвестная ошибка'}`;
      genError.style.display = '';
      const retry = document.createElement('button');
      retry.className = 'primary-btn';
      retry.type = 'button';
      retry.textContent = 'Повторить';
      retry.addEventListener('click', startGenerationStage);
      const goBack = document.createElement('button');
      goBack.className = 'ghost-btn';
      goBack.type = 'button';
      goBack.textContent = 'Назад';
      goBack.addEventListener('click', renderInputStage);
      actions.innerHTML = '';
      actions.append(goBack, retry);
    }
  }

  renderInputStage();

  screen.append(
    renderHeader({
      title: 'Зарегистрироваться',
      leftAction: { label: '←', onClick: () => navigate('start-view') },
    }),
    form,
    actions,
  );

  return screen;
}