import { useState } from 'react'
import { Settings, Heart, Edit2, Shield, Copy, Users } from 'lucide-react'
import { updateProfile } from '../utils/api'
import { hapticFeedback, showAlert } from '../utils/telegram'
import { decodeHtmlEntities } from '../utils/htmlEntities'
import ThemeToggle from '../components/ThemeToggle'
import FollowListModal from '../components/FollowListModal'
import './Profile.css'

const DONATION_URL = 'https://donatepay.ru/don/1435720'
const ALLOWED_SEARCH_PREFERENCES = ['furry', 'anime']

const normalizeSearchPreference = (value) =>
  ALLOWED_SEARCH_PREFERENCES.includes(value) ? value : 'furry'

const DEFAULT_SETTINGS = {
  whitelist: {
    noNSFW: true,
    // Скрыть гомосексуальный контент
    noHomo: true
  },
  searchPreference: 'furry'
}

const normalizeSettings = (rawSettings = {}) => {
  const mergedWhitelist = {
    ...DEFAULT_SETTINGS.whitelist,
    ...(rawSettings.whitelist || {})
  }

  return {
    ...DEFAULT_SETTINGS,
    ...rawSettings,
    whitelist: mergedWhitelist,
    searchPreference: normalizeSearchPreference(rawSettings.searchPreference)
  }
}

export default function Profile({ user, setUser }) {
  const [showSettings, setShowSettings] = useState(false)
  const [showEditBio, setShowEditBio] = useState(false)
  const [bio, setBio] = useState(user.bio || '')
  const [showFollowers, setShowFollowers] = useState(false)
  const [showFollowing, setShowFollowing] = useState(false)
  const [settings, setSettings] = useState(normalizeSettings(user.settings))
  const [saving, setSaving] = useState(false)

  const handleSaveBio = async () => {
    try {
      setSaving(true)
      hapticFeedback('light')
      
      const updatedUser = await updateProfile({ bio })
      setUser({ ...user, bio })
      setShowEditBio(false)
      hapticFeedback('success')
    } catch (error) {
      console.error('Ошибка сохранения:', error)
      hapticFeedback('error')
    } finally {
      setSaving(false)
    }
  }

  const handleSaveSettings = async () => {
    try {
      setSaving(true)
      hapticFeedback('light')
      
      const normalizedSettings = normalizeSettings(settings)
      await updateProfile({ settings: normalizedSettings })
      setUser({ ...user, settings: normalizedSettings })
      setSettings(normalizedSettings)
      setShowSettings(false)
      hapticFeedback('success')
    } catch (error) {
      console.error('Ошибка сохранения:', error)
      hapticFeedback('error')
    } finally {
      setSaving(false)
    }
  }

  const handleDonate = () => {
    hapticFeedback('light')
    window.open(DONATION_URL, '_blank', 'noopener,noreferrer')
  }

  const updateWhitelistSetting = async (key, value) => {
    const updatedSettings = normalizeSettings({
      ...settings,
      whitelist: {
        ...settings.whitelist,
        [key]: value
      }
    })
    setSettings(updatedSettings)
    
    // Сохранить сразу на сервер
    try {
      await updateProfile({ settings: updatedSettings })
      hapticFeedback('success')
    } catch (error) {
      console.error('Ошибка сохранения настроек:', error)
      hapticFeedback('error')
    }
  }

  const updateSearchPreference = (value) => {
    const updatedSettings = normalizeSettings({
      ...settings,
      searchPreference: value
    })
    setSettings(updatedSettings)
  }

  return (
    <div className="profile-page">
      {/* Хедер */}
      <div className="profile-header">
        <h1>Профиль</h1>
        <button className="settings-btn" onClick={() => setShowSettings(true)}>
          <Settings size={24} />
        </button>
      </div>

      {/* Информация о пользователе */}
      <div className="profile-info card">
        <img
          src={user.photoUrl || '/default-avatar.png'}
          alt={user.username || user.firstName || 'User'}
          className="profile-avatar"
        />
        
        <div className="profile-details">
          <h2 className="profile-name">
            {user.firstName || ''} {user.lastName || ''}
            {!user.firstName && !user.lastName && 'Пользователь'}
            {(user.role === 'moderator' || user.role === 'admin') && (
              <Shield size={20} color="var(--button-accent)" />
            )}
          </h2>
          <p className="profile-username">@{user.username || user.firstName || 'user'}</p>
          
          {user.bio ? (
            <div className="profile-bio">
              <p>{decodeHtmlEntities(user.bio)}</p>
              <button className="edit-bio-btn" onClick={() => setShowEditBio(true)}>
                <Edit2 size={16} />
              </button>
            </div>
          ) : (
            <button className="add-bio-btn" onClick={() => setShowEditBio(true)}>
              <Edit2 size={16} />
              <span>Добавить описание</span>
            </button>
          )}
        </div>
        
        <div className="profile-stats">
          <div className="stat-item" onClick={() => setShowFollowers(true)} style={{ cursor: 'pointer' }}>
            <span className="stat-value">{user.followersCount || 0}</span>
            <span className="stat-label">Подписчики</span>
          </div>
          <div className="stat-divider" />
          <div className="stat-item" onClick={() => setShowFollowing(true)} style={{ cursor: 'pointer' }}>
            <span className="stat-value">{user.followingCount || 0}</span>
            <span className="stat-label">Подписки</span>
          </div>
        </div>
      </div>

      <div className="donation-card card">
        <div className="donation-content">
          <div className="donation-icon">
            <Heart size={20} />
          </div>
          <div className="donation-text">
            <h3>Поддержите проект</h3>
            <p>Каждый взнос помогает развивать Nakama и запускать новые функции.</p>
          </div>
        </div>
        <button className="donation-button" onClick={handleDonate}>
          Перейти к донату
        </button>
      </div>

      {/* Реферальная ссылка */}
      {user.referralCode && (
        <div className="referral-card card">
          <div className="referral-content">
            <div className="referral-icon">
              <Users size={20} />
            </div>
            <div className="referral-text">
              <h3>Пригласи друзей</h3>
              <p>Получи +1 к счетчику, когда приглашенный создаст первый пост</p>
              <div className="referral-stats">
                Приглашено: <strong>{user.referralsCount || 0}</strong>
              </div>
            </div>
          </div>
          <div className="referral-link-section">
            <div className="referral-link">
              <code>{`https://t.me/${import.meta.env.VITE_TELEGRAM_BOT_NAME || 'NakamaSpaceBot'}?startapp=${user.referralCode}`}</code>
            </div>
            <button 
              className="referral-copy-btn" 
              onClick={async () => {
                try {
                  hapticFeedback('light')
                  const botName = import.meta.env.VITE_TELEGRAM_BOT_NAME || 'NakamaSpaceBot'
                  const referralLink = `https://t.me/${botName}?startapp=${user.referralCode}`
                  
                  if (navigator.clipboard && navigator.clipboard.writeText) {
                    await navigator.clipboard.writeText(referralLink)
                    hapticFeedback('success')
                    showAlert('✅ Ссылка скопирована!')
                  } else {
                    const textArea = document.createElement('textarea')
                    textArea.value = referralLink
                    textArea.style.position = 'fixed'
                    textArea.style.opacity = '0'
                    document.body.appendChild(textArea)
                    textArea.select()
                    document.execCommand('copy')
                    document.body.removeChild(textArea)
                    hapticFeedback('success')
                    showAlert('✅ Ссылка скопирована!')
                  }
                } catch (error) {
                  console.error('Ошибка копирования:', error)
                  hapticFeedback('error')
                }
              }}
            >
              <Copy size={18} />
              <span>Копировать</span>
            </button>
          </div>
        </div>
      )}

      <div className="profile-powered">
        Powered by glpshcn \\ RBach \\ E621 \\ GelBooru
      </div>

      {/* Быстрые настройки */}
      <div className="quick-settings">
        <h3>Быстрые настройки</h3>
        
        <div className="setting-item card">
          <div>
            <div className="setting-name">Тема оформления</div>
            <div className="setting-desc">Светлая / Тёмная / Авто</div>
          </div>
          <ThemeToggle showLabel />
        </div>
        
        <div className="setting-item card">
          <div>
            <div className="setting-name">Скрыть контент 18+</div>
            <div className="setting-desc">Не показывать посты с пометкой NSFW</div>
          </div>
          <label className="toggle">
            <input
              type="checkbox"
              checked={settings.whitelist.noNSFW}
              onChange={(e) => updateWhitelistSetting('noNSFW', e.target.checked)}
            />
            <span className="toggle-slider" />
          </label>
        </div>

        <div className="setting-item card">
          <div>
            <div className="setting-name">Скрыть Homo</div>
            <div className="setting-desc">Не показывать посты с гомосексуальным контентом</div>
          </div>
          <label className="toggle">
            <input
              type="checkbox"
              checked={settings.whitelist.noHomo}
              onChange={(e) => updateWhitelistSetting('noHomo', e.target.checked)}
            />
            <span className="toggle-slider" />
          </label>
        </div>
      </div>

      {/* Модальное окно редактирования bio */}
      {showEditBio && (
        <div className="modal-overlay" onClick={() => setShowEditBio(false)}>
          <div className="modal-content" onClick={e => e.stopPropagation()}>
            <div className="modal-header">
              <h2>Описание профиля</h2>
              <button
                className="submit-btn"
                onClick={handleSaveBio}
                disabled={saving}
              >
                {saving ? 'Сохранение...' : 'Сохранить'}
              </button>
            </div>
            
            <div className="modal-body">
              <textarea
                placeholder="Расскажите о себе..."
                value={bio}
                onChange={e => setBio(e.target.value)}
                maxLength={300}
                rows={6}
                autoFocus
              />
              <div className="char-count">
                {bio.length} / 300
              </div>
            </div>
          </div>
        </div>
      )}

      {/* Модальное окно настроек */}
      {showSettings && (
        <div className="modal-overlay" onClick={() => setShowSettings(false)}>
          <div className="modal-content settings-modal" onClick={e => e.stopPropagation()}>
            <div className="modal-header">
              <h2>Настройки</h2>
              <button
                className="submit-btn"
                onClick={handleSaveSettings}
                disabled={saving}
              >
                {saving ? 'Сохранение...' : 'Сохранить'}
              </button>
            </div>
            
            <div className="modal-body">
              <div className="settings-section">
                <h3>Фильтры контента</h3>
                
                <div className="setting-row">
                  <div>
                    <div className="setting-name">Без NSFW</div>
                    <div className="setting-desc">Скрыть контент 18+</div>
                  </div>
                  <label className="toggle">
                    <input
                      type="checkbox"
                      checked={settings.whitelist.noNSFW}
                      onChange={(e) => updateWhitelistSetting('noNSFW', e.target.checked)}
                    />
                    <span className="toggle-slider" />
                  </label>
                </div>

                <div className="setting-row">
                  <div>
                    <div className="setting-name">Скрыть Homo</div>
                    <div className="setting-desc">Убрать гомосексуальный контент из ленты и поиска</div>
                  </div>
                  <label className="toggle">
                    <input
                      type="checkbox"
                      checked={settings.whitelist.noHomo}
                      onChange={(e) => updateWhitelistSetting('noHomo', e.target.checked)}
                    />
                    <span className="toggle-slider" />
                  </label>
                </div>
              </div>
              
              <div className="settings-section">
                <h3>Настройки поиска</h3>
                
                <div className="search-switch">
                  <button
                    type="button"
                    className={`search-switch-btn ${settings.searchPreference === 'furry' ? 'active' : ''}`}
                    onClick={() => updateSearchPreference('furry')}
                  >
                    Только Furry (e621)
                  </button>
                  <button
                    type="button"
                    className={`search-switch-btn ${settings.searchPreference === 'anime' ? 'active' : ''}`}
                    onClick={() => updateSearchPreference('anime')}
                  >
                    Только Anime (gelbooru)
                  </button>
                </div>
              </div>
            </div>
          </div>
        </div>
      )}

      {/* Модалка подписчиков */}
      {showFollowers && user && (
        <FollowListModal
          users={user.followers || []}
          title="Подписчики"
          currentUser={user}
          onClose={() => setShowFollowers(false)}
        />
      )}

      {/* Модалка подписок */}
      {showFollowing && user && (
        <FollowListModal
          users={user.following || []}
          title="Подписки"
          currentUser={user}
          onClose={() => setShowFollowing(false)}
        />
      )}
    </div>
  )
}