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) {
        // Save email to localStorage for the verification step
        localStorage.setItem('pending_verify_email', formData.email);
        navigate('/verify');
      }
    } catch (err: any) {
      setError(err.message || 'Erro ao realizar registro.');
    } finally {
      setIsLoading(false);
    }
  };

  return (
    <div className="min-h-screen bg-slate-50 flex flex-col justify-center py-12 sm:px-6 lg:px-8">
      <div className="sm:mx-auto sm:w-full sm:max-w-md">
        <div className="flex justify-center items-center gap-2 text-slate-900">
          <div className="bg-slate-900 text-white p-2 rounded-lg">
             <Hexagon size={28} fill="currentColor" />
          </div>
          <span className="text-3xl font-bold tracking-tight">Fasto<span className="text-yellow-500">.</span></span>
        </div>
        <h2 className="mt-6 text-center text-3xl font-bold tracking-tight text-slate-900">
          Crie sua conta
        </h2>
        <p className="mt-2 text-center text-sm text-slate-600">
          Já tem uma conta? <Link to="/login" className="font-medium text-blue-600 hover:text-blue-500">Faça login agora</Link>
        </p>
      </div>

      <div className="mt-8 sm:mx-auto sm:w-full sm:max-w-md">
        <div className="bg-white py-8 px-4 shadow-xl shadow-slate-200/50 rounded-2xl sm:px-10 border border-slate-100">
          
          <form className="space-y-5" onSubmit={handleRegister}>
            <div>
              <label htmlFor="name" className="block text-sm font-medium text-slate-700">
                Nome Completo
              </label>
              <div className="mt-1 relative rounded-md shadow-sm">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <User className="h-5 w-5 text-slate-400" />
                </div>
                <input
                  id="name"
                  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-slate-300 rounded-lg bg-white focus:outline-none focus:ring-2 focus:ring-blue-100 focus:border-blue-500 sm:text-sm"
                  placeholder="Seu nome"
                />
              </div>
            </div>

            <div>
              <label htmlFor="organization" className="block text-sm font-medium text-slate-700">
                Nome da Organização
              </label>
              <div className="mt-1 relative rounded-md shadow-sm">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Building className="h-5 w-5 text-slate-400" />
                </div>
                <input
                  id="organization"
                  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-slate-300 rounded-lg bg-white focus:outline-none focus:ring-2 focus:ring-blue-100 focus:border-blue-500 sm:text-sm"
                  placeholder="Ex: Minha Empresa"
                />
              </div>
            </div>

            <div>
              <label htmlFor="email" className="block text-sm font-medium text-slate-700">
                Endereço de e-mail
              </label>
              <div className="mt-1 relative rounded-md shadow-sm">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Mail className="h-5 w-5 text-slate-400" />
                </div>
                <input
                  id="email"
                  type="email"
                  autoComplete="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-slate-300 rounded-lg bg-white focus:outline-none focus:ring-2 focus:ring-blue-100 focus:border-blue-500 sm:text-sm"
                  placeholder="voce@empresa.com"
                />
              </div>
            </div>

            <div>
              <label htmlFor="password" senior-admin-password className="block text-sm font-medium text-slate-700">
                Senha
              </label>
              <div className="mt-1 relative rounded-md shadow-sm">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <Lock className="h-5 w-5 text-slate-400" />
                </div>
                <input
                  id="password"
                  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-slate-300 rounded-lg bg-white focus:outline-none focus:ring-2 focus:ring-blue-100 focus:border-blue-500 sm:text-sm"
                  placeholder="••••••••"
                />
              </div>
            </div>

            {error && (
              <div className="text-red-500 text-sm font-medium text-center">
                {error}
              </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-semibold text-white bg-slate-900 hover:bg-slate-800 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-slate-900 transition-all"
              >
                {isLoading ? (
                  <>
                    <Loader2 className="animate-spin h-4 w-4" />
                    Criando conta...
                  </>
                ) : (
                  <>
                    Registrar <ArrowRight className="h-4 w-4" />
                  </>
                )}
              </button>
            </div>
          </form>

          <div className="mt-6">
            <div className="relative">
              <div className="absolute inset-0 flex items-center">
                <div className="w-full border-t border-slate-200" />
              </div>
              <div className="relative flex justify-center text-sm">
                <span className="px-2 bg-white text-slate-500 text-xs">
                  Desenvolvido por <a href="https://blyzer.com.br" target="_blank" rel="noopener noreferrer" className="text-blue-600 hover:underline">Blyzer</a>
                </span>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};
