import { profile } from '../mock-data.js';
import { state } from '../state.js';
import {
  PROFILE_GENDER_FEMALE,
  PROFILE_GENDER_MALE,
  loadProfileSnapshot,
} from '../services/user-profile-params.js';
import { buildIdentityLines } from '../services/user-connections.js';
import { renderUserAvatar } from '../components/avatar-image.js';

export const pageMeta = { id: 'profile-view', title: 'Профиль' };

function toggleText(enabled) {
  return enabled ? 'Yes' : 'No';
}

function genderLabel(value) {
  if (value === PROFILE_GENDER_MALE) return 'Мужской';
  if (value === PROFILE_GENDER_FEMALE) return 'Женский';
  return 'Не указан';
}

function escapeHtml(text) {
  return String(text || '')
    .replaceAll('&', '&')
    .replaceAll('<', '&lt;')
    .replaceAll('>', '&gt;')
    .replaceAll('"', '&quot;')
    .replaceAll("'", '&#39;');
}

function renderProfileInfoText(text) {
  const [intro, details] = String(text || '').split(/\n\n/, 2);
  if (!details) {
    return `<p class="profile-info-modal__lead">${escapeHtml(intro)}</p>`;
  }

  const [sectionTitle, ...items] = details.split('\n').filter(Boolean);
  return `
    <p class="profile-info-modal__lead">${escapeHtml(intro)}</p>
    <section class="profile-info-modal__section" aria-label="${escapeHtml(sectionTitle)}">
      <p class="profile-info-modal__section-title">${escapeHtml(sectionTitle)}</p>
      <ol class="profile-info-modal__list">
        ${items.map((item) => `<li>${escapeHtml(item.replace(/^\d+\)\s*/, ''))}</li>`).join('')}
      </ol>
    </section>
  `;
}

function openProfileInfoModal({ title, text }) {
  const root = document.getElementById('modal-root');
  if (!root) return;
  root.innerHTML = `
    <div class="modal profile-info-modal" id="profile-info-modal" role="dialog" aria-modal="true" aria-labelledby="profile-info-title">
      <section class="modal-card profile-info-modal__card stack">
        <header class="profile-info-modal__header">
          <div>
            <p class="profile-info-modal__eyebrow">Информация</p>
            <h3 class="modal-title profile-info-modal__title" id="profile-info-title">${escapeHtml(title)}</h3>
          </div>
          <button class="profile-info-modal__close" type="button" id="profile-info-close-icon" aria-label="Закрыть" title="Закрыть">&times;</button>
        </header>
        <div class="profile-info-modal__content">
          ${renderProfileInfoText(text)}
        </div>
        <footer class="profile-info-modal__footer">
          <button class="secondary-btn profile-info-modal__confirm" type="button" id="profile-info-close">Готово</button>
        </footer>
      </section>
    </div>
  `;
  const close = () => { root.innerHTML = ''; };
  root.querySelector('#profile-info-close')?.addEventListener('click', close);
  root.querySelector('#profile-info-close-icon')?.addEventListener('click', close);
  root.querySelector('#profile-info-modal')?.addEventListener('click', (event) => {
    if (event.target?.id === 'profile-info-modal') close();
  });
}

function officialInfoText() {
  return 'Можно создавать несколько альтернативных или анонимных каналов. '
    + 'Но для корректного учёта голосов на одного реального человека используется только один официальный канал.';
}

function shineInfoText() {
  return 'Сияющие — это те, от кого идёт внутреннее сияние на тонком плане.\n\n'
    + 'Пять принципов сияющих:\n'
    + '1) сияющие не обманывают;\n'
    + '2) сияющие чувствуют, что человек — это не только физическое тело, а нечто большее;\n'
    + '3) сияющие развиваются и в духовной, и в материальной плоскости;\n'
    + '4) у сияющих есть близкие друзья, с которыми им по-настоящему хорошо;\n'
    + '5) сияющие заботятся о мире: о людях, гармонии и общем благе.';
}

export function render({ navigate }) {
  const login = state.session.login || profile.login;

  const screen = document.createElement('section');
  screen.className = 'stack profile-screen';

  const topActions = document.createElement('div');
  topActions.className = 'profile-top-actions';
  topActions.innerHTML = `
    <button class="ghost-btn profile-top-action-btn profile-top-menu-btn" type="button" data-top-action="settings" aria-label="Настройки" title="Настройки">⋮</button>
  `;
  topActions.querySelector('[data-top-action="settings"]')?.addEventListener('click', () => navigate('settings-view'));

  const card = document.createElement('div');
  card.className = 'card stack profile-main-card';

  const topRow = document.createElement('div');
  topRow.className = 'row';
  topRow.innerHTML = `
    <div class="row" style="gap:12px; align-items:center;">
      <div data-profile-avatar-slot="true"></div>
      <div class="profile-identity-lines" data-profile-identity="true">
        <div class="profile-identity-line profile-identity-login">${String(login || '').trim() || 'unknown'}</div>
      </div>
    </div>
  `;

  const badgesRow = document.createElement('div');
  badgesRow.className = 'row';
  badgesRow.innerHTML = `
    <button class="badge profile-toggle-btn is-no" type="button" data-toggle="official">Официальный: No</button>
    <button class="badge profile-toggle-btn is-no" type="button" data-toggle="shine">Сияющий: No</button>
  `;

  const listWrap = document.createElement('div');
  listWrap.className = 'stack profile-param-list';

  const officialBtn = badgesRow.querySelector('[data-toggle="official"]');
  const shineBtn = badgesRow.querySelector('[data-toggle="shine"]');
  const identityEl = topRow.querySelector('[data-profile-identity="true"]');
  const avatarSlotEl = topRow.querySelector('[data-profile-avatar-slot="true"]');

  let currentFields = [];
  let currentToggles = [];
  let currentGender = 'unknown';
  let currentAvatar = { value: '', source: '', txId: '', sha256Hex: '', timeMs: 0 };

  function syncIdentity() {
    if (!identityEl) return;
    const firstName = currentFields.find((field) => field.key === 'first_name')?.value || '';
    const lastName = currentFields.find((field) => field.key === 'last_name')?.value || '';
    const lines = buildIdentityLines({ login, firstName, lastName });
    identityEl.innerHTML = lines.map((line, idx) => (
      `<div class="profile-identity-line${idx === lines.length - 1 ? ' profile-identity-login' : ''}">${escapeHtml(line)}</div>`
    )).join('');
  }

  function updateAvatarUi() {
    if (!(avatarSlotEl instanceof HTMLElement)) return;
    const firstName = String(currentFields.find((field) => field.key === 'first_name')?.value || '').trim();
    const lastName = String(currentFields.find((field) => field.key === 'last_name')?.value || '').trim();
    avatarSlotEl.innerHTML = '';
    avatarSlotEl.append(renderUserAvatar({
      login,
      firstName,
      lastName,
      avatar: currentAvatar?.txId
        ? { ar: currentAvatar.txId, sha256Hex: String(currentAvatar?.sha256Hex || '').trim().toLowerCase() }
        : null,
      size: 'large',
      className: 'profile-avatar',
    }));
  }

  function updateToggleButton(button, prefix, enabled) {
    button.textContent = `${prefix}: ${toggleText(enabled)}`;
    button.classList.remove('is-no', 'is-yes-official', 'is-yes-shine');
    if (!enabled) {
      button.classList.add('is-no');
      return;
    }
    if (prefix === 'Официальный') button.classList.add('is-yes-official');
    else button.classList.add('is-yes-shine');
  }

  function updateTogglesUi() {
    const official = currentToggles.find((item) => item.key === 'official') || { enabled: false };
    const shine = currentToggles.find((item) => item.key === 'shine') || { enabled: false };
    updateToggleButton(officialBtn, 'Официальный', official.enabled);
    updateToggleButton(shineBtn, 'Сияющий', shine.enabled);
  }

  officialBtn?.classList.add('profile-badge-trigger');
  shineBtn?.classList.add('profile-badge-trigger');
  officialBtn?.addEventListener('click', () => {
    openProfileInfoModal({
      title: 'Официальный канал',
      text: officialInfoText(),
    });
  });
  shineBtn?.addEventListener('click', () => {
    openProfileInfoModal({
      title: 'Справка о сияющих',
      text: shineInfoText(),
    });
  });

  function renderFields(fields) {
    listWrap.innerHTML = '';
    fields.forEach((field) => {
      const row = document.createElement('div');
      row.className = 'card profile-param-item row';
      const value = String(field.value || '').trim() || 'не заполнено';
      row.innerHTML = `<div class="profile-param-value"><b>${field.label}</b>: ${escapeHtml(value)}</div>`;
      listWrap.append(row);

      if (field.key === 'last_name') {
        const genderRow = document.createElement('div');
        genderRow.className = 'card profile-param-item row';
        genderRow.innerHTML = `<div class="profile-param-value"><b>Пол</b>: ${escapeHtml(genderLabel(currentGender))}</div>`;
        listWrap.append(genderRow);
      }
    });
  }

  async function refreshProfileSnapshot() {
    if (state.session.isLocalDemo) {
      currentFields = [
        { key: 'first_name', label: 'Имя', value: 'Тестовый' },
        { key: 'last_name', label: 'Фамилия', value: 'Пользователь' },
        { key: 'address', label: 'Адрес', value: 'Локальный режим' },
        { key: 'website', label: 'Веб', value: '127.0.0.1' },
        { key: 'phone', label: 'Телефон', value: profile.phone },
      ];
      currentToggles = [
        { key: 'official', enabled: false },
        { key: 'shine', enabled: false },
      ];
      currentGender = 'unknown';
      currentAvatar = { value: '', source: '', txId: '', sha256Hex: '', timeMs: 0 };
      syncIdentity();
      updateAvatarUi();
      updateTogglesUi();
      renderFields(currentFields);
      return;
    }

    try {
      const snapshot = await loadProfileSnapshot(login);
      currentFields = Array.isArray(snapshot.fields) ? snapshot.fields : [];
      currentToggles = Array.isArray(snapshot.toggles) ? snapshot.toggles : [];
      currentGender = snapshot.gender || 'unknown';
      currentAvatar = snapshot.avatar || { value: '', source: '', txId: '', sha256Hex: '', timeMs: 0 };
      syncIdentity();
      updateAvatarUi();
      updateTogglesUi();
      renderFields(currentFields);
    } catch (error) {
      // ignore status row in profile-view
    }
  }

  card.append(topActions, topRow, badgesRow, listWrap);
  screen.append(card);

  updateAvatarUi();
  refreshProfileSnapshot();

  return screen;
}