import React, { useState } from 'react';
import { useNavigate, Link } from 'react-router-dom';
import { Hexagon, Lock, Mail, ArrowRight, Loader2, User, Building } from 'lucide-react';
import { register } from '../services/dataService';

export const Register: React.FC = () => {
  const navigate = useNavigate();
  const [isLoading, setIsLoading] = useState(false);
  const [formData, setFormData] = useState({
    name: '',
    email: '',
    password: '',
    organizationName: ''
  });
  const [error, setError] = useState('');

  const handleRegister = async (e: React.FormEvent) => {
    e.preventDefault();
    setIsLoading(true);
    setError('');
    
    try {
      const success = await register(formData);
      if (success) {
        navigate('/login', { state: { message: 'Conta criada! Verifique seu e-mail para o código de ativação.' } });
      }
    } catch (err: any) {
      setError(err.message || 'Erro ao criar conta.');
    } finally {
      setIsLoading(false);
    }
  };

  return (
    <div className="min-h-screen bg-zinc-50 dark:bg-dark-bg flex flex-col justify-center py-12 sm:px-6 lg:px-8 transition-colors duration-300">
      <div className="sm:mx-auto sm:w-full sm:max-w-md">
        <div className="flex justify-center items-center gap-2 text-zinc-900 dark:text-zinc-50">
          <div className="bg-zinc-900 dark:bg-brand-yellow text-white dark:text-zinc-950 p-2 rounded-lg transition-colors">
            <Hexagon size={32} fill="currentColor" />
          </div>
          <span className="text-3xl font-bold tracking-tight">Fasto<span className="text-brand-yellow">.</span></span>
        </div>
        <h2 className="mt-6 text-center text-3xl font-bold tracking-tight text-zinc-900 dark:text-zinc-50">
          Crie sua organização
        </h2>
      </div>

      <div className="mt-8 sm:mx-auto sm:w-full sm:max-w-md">
        <div className="bg-white dark:bg-dark-card py-8 px-4 shadow-xl shadow-zinc-200/50 dark:shadow-none rounded-2xl sm:px-10 border border-zinc-100 dark:border-dark-border transition-colors">
          <form className="space-y-5" onSubmit={handleRegister}>
            {error && (
              <div className="bg-red-50 dark:bg-red-900/20 border border-red-100 dark:border-red-900/30 p-3 rounded-lg text-red-600 dark:text-red-400 text-sm">
                {error}
              </div>
            )}

            <div>
              <label htmlFor="name" className="block text-sm font-medium text-zinc-700 dark:text-zinc-300">Seu Nome</label>
              <div className="mt-1 relative">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <User className="h-5 w-5 text-zinc-400 dark:text-dark-muted" />
                </div>
                <input type="text" required value={formData.name} onChange={e => setFormData({...formData, name: e.target.value})} className="block w-full pl-10 pr-3 py-2 border border-zinc-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-input text-zinc-900 dark:text-zinc-100 placeholder-zinc-400 dark:placeholder-zinc-600 focus:ring-brand-yellow/20 focus:border-brand-yellow sm:text-sm transition-all" placeholder="Nome Completo" />
              </div>
            </div>

            <div>
              <label htmlFor="organization" className="block text-sm font-medium text-zinc-700 dark:text-zinc-300">Nome da Organização</label>
              <div className="mt-1 relative">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Building className="h-5 w-5 text-zinc-400 dark:text-dark-muted" />
                </div>
                <input type="text" required value={formData.organizationName} onChange={e => setFormData({...formData, organizationName: e.target.value})} className="block w-full pl-10 pr-3 py-2 border border-zinc-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-input text-zinc-900 dark:text-zinc-100 placeholder-zinc-400 dark:placeholder-zinc-600 focus:ring-brand-yellow/20 focus:border-brand-yellow sm:text-sm transition-all" placeholder="Ex: Minha Empresa" />
              </div>
            </div>

            <div>
              <label htmlFor="email" className="block text-sm font-medium text-zinc-700 dark:text-zinc-300">E-mail Corporativo</label>
              <div className="mt-1 relative">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Mail className="h-5 w-5 text-zinc-400 dark:text-dark-muted" />
                </div>
                <input type="email" required value={formData.email} onChange={e => setFormData({...formData, email: e.target.value})} className="block w-full pl-10 pr-3 py-2 border border-zinc-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-input text-zinc-900 dark:text-zinc-100 placeholder-zinc-400 dark:placeholder-zinc-600 focus:ring-brand-yellow/20 focus:border-brand-yellow sm:text-sm transition-all" placeholder="seu@email.com" />
              </div>
            </div>

            <div>
              <label htmlFor="password" senior-admin-password className="block text-sm font-medium text-zinc-700 dark:text-zinc-300">Senha</label>
              <div className="mt-1 relative">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Lock className="h-5 w-5 text-zinc-400 dark:text-dark-muted" />
                </div>
                <input type="password" required value={formData.password} onChange={e => setFormData({...formData, password: e.target.value})} className="block w-full pl-10 pr-3 py-2 border border-zinc-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-input text-zinc-900 dark:text-zinc-100 placeholder-zinc-400 dark:placeholder-zinc-600 focus:ring-brand-yellow/20 focus:border-brand-yellow sm:text-sm transition-all" placeholder="••••••••" />
              </div>
            </div>

            <div>
              <button type="submit" disabled={isLoading} className="w-full flex justify-center items-center gap-2 py-2.5 px-4 border border-transparent rounded-lg shadow-sm text-sm font-bold text-zinc-950 bg-brand-yellow hover:bg-yellow-500 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-brand-yellow transition-all disabled:opacity-70">
                {isLoading ? <Loader2 className="animate-spin h-5 w-5" /> : <>Criar Conta <ArrowRight size={18} /></>}
              </button>
            </div>
          </form>

          <div className="mt-6 text-center">
            <Link to="/login" className="text-sm font-medium text-brand-yellow hover:text-yellow-600">Já possui uma conta? Entre aqui</Link>
          </div>
        </div>
      </div>
    </div>
  );
};