import React, { useState } from 'react';
import { User, Mail, Phone, MapPin, Lock, Bell, Palette, Globe, Save, Camera, GraduationCap } from 'lucide-react';
import { Button } from '../components/Button';
import { useAuth } from '../contexts/AuthContext';
import { UserRole } from '../types';

export const SettingsPage: React.FC = () => {
    const { user } = useAuth();
    const isAdmin = user?.role === UserRole.SUPERADMIN || user?.role === UserRole.BUSINESS_OWNER;
    const [activeTab, setActiveTab] = useState<'profile' | 'account' | 'notifications' | 'appearance' | 'courses'>('profile');
    const [profileData, setProfileData] = useState({
        name: 'João Silva',
        email: 'joao.silva@photum.com',
        phone: '(41) 99999-0000',
        location: 'Curitiba, PR',
        bio: 'Fotógrafo profissional especializado em eventos e formaturas há mais de 10 anos.',
        avatar: 'https://i.pravatar.cc/150?img=68'
    });

    const [notificationSettings, setNotificationSettings] = useState({
        emailNotifications: true,
        pushNotifications: true,
        smsNotifications: false,
        eventReminders: true,
        paymentAlerts: true,
        teamUpdates: false
    });

    const [appearanceSettings, setAppearanceSettings] = useState({
        theme: 'light',
        language: 'pt-BR',
        dateFormat: 'DD/MM/YYYY',
        currency: 'BRL'
    });

    const handleSaveProfile = () => {
        alert('Perfil atualizado com sucesso!');
    };

    const handleSaveNotifications = () => {
        alert('Configurações de notificações salvas!');
    };

    const handleSaveAppearance = () => {
        alert('Configurações de aparência salvas!');
    };

    return (
        <div className="min-h-screen bg-gray-50 pt-20 sm:pt-24 md:pt-28 lg:pt-32 pb-8 sm:pb-12">
            <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
                {/* Header */}
                <div className="mb-6 sm:mb-8">
                    <h1 className="text-2xl sm:text-3xl font-serif font-bold text-brand-black mb-2">
                        Configurações
                    </h1>
                    <p className="text-sm sm:text-base text-gray-600">
                        Gerencie suas preferências e informações da conta
                    </p>
                </div>

                <div className="grid grid-cols-1 lg:grid-cols-4 gap-4 sm:gap-6">
                    {/* Mobile Tabs - Horizontal */}
                    <div className="lg:hidden">
                        <div className="bg-white rounded-lg shadow-sm border border-gray-200 p-2">
                            <nav className="flex overflow-x-auto gap-1 scrollbar-hide">
                                <button
                                    onClick={() => setActiveTab('profile')}
                                    className={`flex items-center gap-2 px-3 py-2 rounded-md transition-colors whitespace-nowrap text-sm ${activeTab === 'profile'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <User size={18} />
                                    <span className="font-medium">Perfil</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('account')}
                                    className={`flex items-center gap-2 px-3 py-2 rounded-md transition-colors whitespace-nowrap text-sm ${activeTab === 'account'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Lock size={18} />
                                    <span className="font-medium">Conta</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('notifications')}
                                    className={`flex items-center gap-2 px-3 py-2 rounded-md transition-colors whitespace-nowrap text-sm ${activeTab === 'notifications'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Bell size={18} />
                                    <span className="font-medium">Notificações</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('appearance')}
                                    className={`flex items-center gap-2 px-3 py-2 rounded-md transition-colors whitespace-nowrap text-sm ${activeTab === 'appearance'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Palette size={18} />
                                    <span className="font-medium">Aparência</span>
                                </button>
                            </nav>
                        </div>
                    </div>

                    {/* Desktop Sidebar - Vertical */}
                    <div className="hidden lg:block lg:col-span-1">
                        <div className="bg-white rounded-lg shadow-sm border border-gray-200 p-4">
                            <nav className="space-y-1">
                                <button
                                    onClick={() => setActiveTab('profile')}
                                    className={`w-full flex items-center gap-3 px-4 py-3 rounded-md transition-colors ${activeTab === 'profile'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <User size={20} />
                                    <span className="font-medium">Perfil</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('account')}
                                    className={`w-full flex items-center gap-3 px-4 py-3 rounded-md transition-colors ${activeTab === 'account'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Lock size={20} />
                                    <span className="font-medium">Conta</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('notifications')}
                                    className={`w-full flex items-center gap-3 px-4 py-3 rounded-md transition-colors ${activeTab === 'notifications'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Bell size={20} />
                                    <span className="font-medium">Notificações</span>
                                </button>
                                <button
                                    onClick={() => setActiveTab('appearance')}
                                    className={`w-full flex items-center gap-3 px-4 py-3 rounded-md transition-colors ${activeTab === 'appearance'
                                        ? 'bg-brand-gold text-white'
                                        : 'text-gray-700 hover:bg-gray-100'
                                        }`}
                                >
                                    <Palette size={20} />
                                    <span className="font-medium">Aparência</span>
                                </button>
                            </nav>
                        </div>
                    </div>

                    {/* Content */}
                    <div className="lg:col-span-3">
                        <div className="bg-white rounded-lg shadow-sm border border-gray-200 p-4 sm:p-6 md:p-8">
                            {/* Profile Tab */}
                            {activeTab === 'profile' && (
                                <div>
                                    <h2 className="text-xl sm:text-2xl font-semibold mb-4 sm:mb-6">Informações do Perfil</h2>

                                    <div className="mb-6 sm:mb-8">
                                        <div className="flex flex-col sm:flex-row items-center sm:items-start gap-4 sm:gap-6">
                                            <div className="relative">
                                                <img
                                                    src={profileData.avatar}
                                                    alt="Avatar"
                                                    className="w-20 h-20 sm:w-24 sm:h-24 rounded-full object-cover"
                                                />
                                                <button className="absolute bottom-0 right-0 w-7 h-7 sm:w-8 sm:h-8 bg-brand-gold text-white rounded-full flex items-center justify-center hover:bg-[#a5bd2e] transition-colors">
                                                    <Camera size={14} className="sm:w-4 sm:h-4" />
                                                </button>
                                            </div>
                                            <div className="text-center sm:text-left">
                                                <h3 className="font-semibold text-base sm:text-lg">{profileData.name}</h3>
                                                <p className="text-xs sm:text-sm text-gray-600">{profileData.email}</p>
                                                <button className="text-xs sm:text-sm text-brand-gold hover:underline mt-1">
                                                    Alterar foto
                                                </button>
                                            </div>
                                        </div>
                                    </div>

                                    <div className="space-y-6">
                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Nome Completo
                                            </label>
                                            <div className="relative">
                                                <User className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
                                                <input
                                                    type="text"
                                                    value={profileData.name}
                                                    onChange={(e) => setProfileData({ ...profileData, name: e.target.value })}
                                                    className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                                />
                                            </div>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Email
                                            </label>
                                            <div className="relative">
                                                <Mail className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
                                                <input
                                                    type="email"
                                                    value={profileData.email}
                                                    onChange={(e) => setProfileData({ ...profileData, email: e.target.value })}
                                                    className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                                />
                                            </div>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Telefone
                                            </label>
                                            <div className="relative">
                                                <Phone className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
                                                <input
                                                    type="tel"
                                                    value={profileData.phone}
                                                    onChange={(e) => setProfileData({ ...profileData, phone: e.target.value })}
                                                    className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                                />
                                            </div>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Localização
                                            </label>
                                            <div className="relative">
                                                <MapPin className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
                                                <input
                                                    type="text"
                                                    value={profileData.location}
                                                    onChange={(e) => setProfileData({ ...profileData, location: e.target.value })}
                                                    className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                                />
                                            </div>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Biografia
                                            </label>
                                            <textarea
                                                value={profileData.bio}
                                                onChange={(e) => setProfileData({ ...profileData, bio: e.target.value })}
                                                rows={4}
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            />
                                        </div>

                                        <div className="pt-4">
                                            <Button size="lg" variant="secondary" onClick={handleSaveProfile}>
                                                <Save size={20} className="mr-2" />
                                                Salvar Alterações
                                            </Button>
                                        </div>
                                    </div>
                                </div>
                            )}

                            {/* Account Tab */}
                            {activeTab === 'account' && (
                                <div>
                                    <h2 className="text-2xl font-semibold mb-6">Segurança da Conta</h2>

                                    <div className="space-y-6">
                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Senha Atual
                                            </label>
                                            <input
                                                type="password"
                                                placeholder="Digite sua senha atual"
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            />
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Nova Senha
                                            </label>
                                            <input
                                                type="password"
                                                placeholder="Digite sua nova senha"
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            />
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Confirmar Nova Senha
                                            </label>
                                            <input
                                                type="password"
                                                placeholder="Confirme sua nova senha"
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            />
                                        </div>

                                        <div className="pt-4">
                                            <Button size="lg" variant="secondary">
                                                <Lock size={20} className="mr-2" />
                                                Atualizar Senha
                                            </Button>
                                        </div>

                                        <div className="pt-8 border-t border-gray-200">
                                            <h3 className="text-lg font-semibold mb-4">Autenticação em Dois Fatores</h3>
                                            <p className="text-gray-600 mb-4">
                                                Adicione uma camada extra de segurança à sua conta
                                            </p>
                                            <Button size="md" variant="outline">
                                                Ativar 2FA
                                            </Button>
                                        </div>
                                    </div>
                                </div>
                            )}

                            {/* Notifications Tab */}
                            {activeTab === 'notifications' && (
                                <div>
                                    <h2 className="text-2xl font-semibold mb-6">Preferências de Notificações</h2>

                                    <div className="space-y-6">
                                        <div className="flex items-center justify-between py-4 border-b border-gray-200">
                                            <div>
                                                <h3 className="font-medium">Notificações por Email</h3>
                                                <p className="text-sm text-gray-600">Receba atualizações por email</p>
                                            </div>
                                            <label className="relative inline-flex items-center cursor-pointer">
                                                <input
                                                    type="checkbox"
                                                    checked={notificationSettings.emailNotifications}
                                                    onChange={(e) => setNotificationSettings({
                                                        ...notificationSettings,
                                                        emailNotifications: e.target.checked
                                                    })}
                                                    className="sr-only peer"
                                                />
                                                <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-brand-gold/20 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-brand-gold"></div>
                                            </label>
                                        </div>

                                        <div className="flex items-center justify-between py-4 border-b border-gray-200">
                                            <div>
                                                <h3 className="font-medium">Notificações Push</h3>
                                                <p className="text-sm text-gray-600">Receba notificações no navegador</p>
                                            </div>
                                            <label className="relative inline-flex items-center cursor-pointer">
                                                <input
                                                    type="checkbox"
                                                    checked={notificationSettings.pushNotifications}
                                                    onChange={(e) => setNotificationSettings({
                                                        ...notificationSettings,
                                                        pushNotifications: e.target.checked
                                                    })}
                                                    className="sr-only peer"
                                                />
                                                <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-brand-gold/20 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-brand-gold"></div>
                                            </label>
                                        </div>

                                        <div className="flex items-center justify-between py-4 border-b border-gray-200">
                                            <div>
                                                <h3 className="font-medium">SMS</h3>
                                                <p className="text-sm text-gray-600">Receba mensagens de texto</p>
                                            </div>
                                            <label className="relative inline-flex items-center cursor-pointer">
                                                <input
                                                    type="checkbox"
                                                    checked={notificationSettings.smsNotifications}
                                                    onChange={(e) => setNotificationSettings({
                                                        ...notificationSettings,
                                                        smsNotifications: e.target.checked
                                                    })}
                                                    className="sr-only peer"
                                                />
                                                <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-brand-gold/20 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-brand-gold"></div>
                                            </label>
                                        </div>

                                        <div className="flex items-center justify-between py-4 border-b border-gray-200">
                                            <div>
                                                <h3 className="font-medium">Lembretes de Eventos</h3>
                                                <p className="text-sm text-gray-600">Receba lembretes antes dos eventos</p>
                                            </div>
                                            <label className="relative inline-flex items-center cursor-pointer">
                                                <input
                                                    type="checkbox"
                                                    checked={notificationSettings.eventReminders}
                                                    onChange={(e) => setNotificationSettings({
                                                        ...notificationSettings,
                                                        eventReminders: e.target.checked
                                                    })}
                                                    className="sr-only peer"
                                                />
                                                <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-brand-gold/20 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-brand-gold"></div>
                                            </label>
                                        </div>

                                        <div className="flex items-center justify-between py-4 border-b border-gray-200">
                                            <div>
                                                <h3 className="font-medium">Alertas de Pagamento</h3>
                                                <p className="text-sm text-gray-600">Notificações sobre pagamentos</p>
                                            </div>
                                            <label className="relative inline-flex items-center cursor-pointer">
                                                <input
                                                    type="checkbox"
                                                    checked={notificationSettings.paymentAlerts}
                                                    onChange={(e) => setNotificationSettings({
                                                        ...notificationSettings,
                                                        paymentAlerts: e.target.checked
                                                    })}
                                                    className="sr-only peer"
                                                />
                                                <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-brand-gold/20 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-brand-gold"></div>
                                            </label>
                                        </div>

                                        <div className="pt-4">
                                            <Button size="lg" variant="secondary" onClick={handleSaveNotifications}>
                                                <Save size={20} className="mr-2" />
                                                Salvar Preferências
                                            </Button>
                                        </div>
                                    </div>
                                </div>
                            )}

                            {/* Appearance Tab */}
                            {activeTab === 'appearance' && (
                                <div>
                                    <h2 className="text-2xl font-semibold mb-6">Aparência e Idioma</h2>

                                    <div className="space-y-6">
                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Tema
                                            </label>
                                            <select
                                                value={appearanceSettings.theme}
                                                onChange={(e) => setAppearanceSettings({
                                                    ...appearanceSettings,
                                                    theme: e.target.value
                                                })}
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            >
                                                <option value="light">Claro</option>
                                                <option value="dark">Escuro</option>
                                                <option value="auto">Automático</option>
                                            </select>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Idioma
                                            </label>
                                            <select
                                                value={appearanceSettings.language}
                                                onChange={(e) => setAppearanceSettings({
                                                    ...appearanceSettings,
                                                    language: e.target.value
                                                })}
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            >
                                                <option value="pt-BR">Português (Brasil)</option>
                                                <option value="en-US">English (US)</option>
                                                <option value="es-ES">Español</option>
                                            </select>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Formato de Data
                                            </label>
                                            <select
                                                value={appearanceSettings.dateFormat}
                                                onChange={(e) => setAppearanceSettings({
                                                    ...appearanceSettings,
                                                    dateFormat: e.target.value
                                                })}
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            >
                                                <option value="DD/MM/YYYY">DD/MM/YYYY</option>
                                                <option value="MM/DD/YYYY">MM/DD/YYYY</option>
                                                <option value="YYYY-MM-DD">YYYY-MM-DD</option>
                                            </select>
                                        </div>

                                        <div>
                                            <label className="block text-sm font-medium text-gray-700 mb-2">
                                                Moeda
                                            </label>
                                            <select
                                                value={appearanceSettings.currency}
                                                onChange={(e) => setAppearanceSettings({
                                                    ...appearanceSettings,
                                                    currency: e.target.value
                                                })}
                                                className="w-full px-4 py-3 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-brand-gold"
                                            >
                                                <option value="BRL">Real (R$)</option>
                                                <option value="USD">Dólar ($)</option>
                                                <option value="EUR">Euro (€)</option>
                                            </select>
                                        </div>

                                        <div className="pt-4">
                                            <Button size="lg" variant="secondary" onClick={handleSaveAppearance}>
                                                <Save size={20} className="mr-2" />
                                                Salvar Configurações
                                            </Button>
                                        </div>
                                    </div>
                                </div>
                            )}
                        </div>
                    </div>
                </div>
            </div>
        </div>
    );
};