import React, { useState } from 'react';
import logo from '../assets/react.svg';
import { useParams, useNavigate } from 'react-router-dom';

export default function PasswordResetConfirm() {
  const { uid, token } = useParams();
  const [newPassword, setNewPassword] = useState('');
  const [confirmPassword, setConfirmPassword] = useState('');
  const [loading, setLoading] = useState(false);
  const [success, setSuccess] = useState(false);
  const [error, setError] = useState('');
  const navigate = useNavigate();

  const handleSubmit = async (e) => {
    e.preventDefault();
    setError('');
    if (newPassword !== confirmPassword) {
      setError('Las contraseñas no coinciden.');
      return;
    }
    setLoading(true);
    try {
      // POST a la ruta real del backend (URL absoluta)
      const apiUrl = `${import.meta.env.VITE_EFC_API_URL}/user/password-reset-confirm/${uid}/${token}/`;
      const res = await fetch(apiUrl, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ password: newPassword }),
      });
      if (!res.ok) {
        const data = await res.json().catch(() => ({}));
        setError(data.detail || 'No se pudo cambiar la contraseña.');
      } else {
        setSuccess(true);
        setTimeout(() => navigate('/login'), 2500);
      }
    } catch (err) {
      setError('Error de red. Intenta de nuevo.');
    }
    setLoading(false);
  };

  return (
    <div className="min-h-screen flex items-center justify-center py-12 px-4 sm:px-6 lg:px-8" style={{ backgroundColor: '#F2F4F7' }}>
      {/* Background pattern */}
      <div className="absolute inset-0 opacity-20 pointer-events-none select-none">
        <div className="absolute inset-0" style={{
          backgroundImage: `url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fillRule='evenodd'%3E%3Cg fill='%231B2A41' fillOpacity='0.1'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")`
        }}></div>
      </div>
      <div className="relative max-w-md w-full">
        <div className="bg-white backdrop-blur-md rounded-3xl shadow-2xl border border-gray-200 overflow-hidden">
          {/* Header navy */}
          <div className="px-8 py-10 text-center" style={{ backgroundColor: '#1B2A41' }}>
            {/* Logo eliminado para diseño limpio */}
            <h2 className="text-2xl font-bold text-white mb-2">Nueva contraseña</h2>
            <p className="text-sm" style={{ color: 'rgba(255, 255, 255, 0.8)' }}>
              Ingresa tu nueva contraseña y confírmala
            </p>
          </div>
          <div className="px-8 py-8">
            {success ? (
              <div className="text-green-700 bg-green-50 border border-green-200 rounded p-4 text-center mb-4">
                Contraseña cambiada correctamente. Redirigiendo al login...
              </div>
            ) : (
              <form onSubmit={handleSubmit} className="space-y-6">
                {/* Nueva contraseña */}
                <div>
                  <label className="block text-sm font-semibold mb-2" style={{ color: '#333333' }}>
                    Nueva contraseña
                  </label>
                  <div className="relative">
                    <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                      <svg className="h-5 w-5" style={{ color: '#7A7A7A' }} fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z" />
                      </svg>
                    </div>
                    <input
                      type="password"
                      required
                      className="block w-full pl-10 pr-3 py-3 border border-gray-300 rounded-xl focus:outline-none focus:ring-2 focus:border-transparent transition duration-200"
                      style={{ color: '#333333', borderColor: '#d1d5db' }}
                      placeholder="Nueva contraseña"
                      value={newPassword}
                      onChange={e => setNewPassword(e.target.value)}
                      onFocus={e => { e.target.style.borderColor = 'transparent'; e.target.style.boxShadow = '0 0 0 2px #4DA6FF'; }}
                      onBlur={e => { e.target.style.borderColor = '#d1d5db'; e.target.style.boxShadow = 'none'; }}
                      onMouseEnter={e => { if (document.activeElement !== e.target) e.target.style.borderColor = '#4DA6FF'; }}
                      onMouseLeave={e => { if (document.activeElement !== e.target) e.target.style.borderColor = '#d1d5db'; }}
                    />
                  </div>
                </div>
                {/* Confirmar contraseña */}
                <div>
                  <label className="block text-sm font-semibold mb-2" style={{ color: '#333333' }}>
                    Confirmar contraseña
                  </label>
                  <div className="relative">
                    <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                      <svg className="h-5 w-5" style={{ color: '#7A7A7A' }} fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z" />
                      </svg>
                    </div>
                    <input
                      type="password"
                      required
                      className="block w-full pl-10 pr-3 py-3 border border-gray-300 rounded-xl focus:outline-none focus:ring-2 focus:border-transparent transition duration-200"
                      style={{ color: '#333333', borderColor: '#d1d5db' }}
                      placeholder="Confirmar contraseña"
                      value={confirmPassword}
                      onChange={e => setConfirmPassword(e.target.value)}
                      onFocus={e => { e.target.style.borderColor = 'transparent'; e.target.style.boxShadow = '0 0 0 2px #4DA6FF'; }}
                      onBlur={e => { e.target.style.borderColor = '#d1d5db'; e.target.style.boxShadow = 'none'; }}
                      onMouseEnter={e => { if (document.activeElement !== e.target) e.target.style.borderColor = '#4DA6FF'; }}
                      onMouseLeave={e => { if (document.activeElement !== e.target) e.target.style.borderColor = '#d1d5db'; }}
                    />
                  </div>
                </div>
                {/* Error */}
                {error && (
                  <div className="rounded-xl bg-red-50 border p-4 animate-pulse" style={{ borderColor: 'rgba(198, 40, 40, 0.2)' }}>
                    <div className="flex">
                      <div className="flex-shrink-0">
                        <svg className="h-5 w-5" style={{ color: '#C62828' }} viewBox="0 0 20 20" fill="currentColor">
                          <path fillRule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clipRule="evenodd" />
                        </svg>
                      </div>
                      <div className="ml-3">
                        <h3 className="text-sm font-medium" style={{ color: '#C62828' }}>{error}</h3>
                      </div>
                    </div>
                  </div>
                )}
                {/* Botón */}
                <div>
                  <button
                    type="submit"
                    disabled={loading}
                    className="group relative w-full flex justify-center py-3 px-4 border border-transparent text-sm font-semibold rounded-xl text-white focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed transition-all duration-300 shadow-lg hover:shadow-xl transform hover:-translate-y-0.5"
                    style={{ backgroundColor: '#1B2A41', '--tw-ring-color': '#1B2A41' }}
                    onMouseEnter={e => { if (!loading) e.target.style.backgroundColor = '#162234'; }}
                    onMouseLeave={e => { if (!loading) e.target.style.backgroundColor = '#1B2A41'; }}
                  >
                    {loading ? (
                      <>
                        <svg className="animate-spin -ml-1 mr-3 h-5 w-5 text-white" fill="none" viewBox="0 0 24 24">
                          <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
                          <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
                        </svg>
                        Cambiando...
                      </>
                    ) : (
                      <>
                        <span>Cambiar contraseña</span>
                        <svg className="ml-2 w-4 h-4 group-hover:translate-x-1 transition-transform duration-200" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M13 7l5 5m0 0l-5 5m5-5H6" />
                        </svg>
                      </>
                    )}
                  </button>
                </div>
                {/* Link volver al login */}
                <div className="text-center space-y-3 mt-4">
                  <div className="text-sm">
                    <a
                      href="/login"
                      className="font-medium transition-colors duration-200"
                      style={{ color: '#4DA6FF' }}
                      onMouseEnter={e => e.target.style.color = '#1976D2'}
                      onMouseLeave={e => e.target.style.color = '#4DA6FF'}
                    >
                      Volver al login
                    </a>
                  </div>
                  <div className="border-t border-gray-200 pt-4">
                    <a
                      href="/"
                      className="inline-flex items-center text-sm font-medium group transition-colors duration-200"
                      style={{ color: '#4DA6FF' }}
                      onMouseEnter={e => e.target.style.color = '#1976D2'}
                      onMouseLeave={e => e.target.style.color = '#4DA6FF'}
                    >
                      <svg className="mr-2 w-4 h-4 group-hover:-translate-x-1 transition-transform duration-200" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M11 17l-5-5m0 0l5-5m-5 5h12" />
                      </svg>
                      Volver al inicio
                    </a>
                  </div>
                </div>
              </form>
            )}
          </div>
          {/* Footer */}
          <div className="px-8 py-4 border-t border-gray-200" style={{ backgroundColor: '#F2F4F7' }}>
            <div className="text-center">
              <p className="text-xs" style={{ color: '#7A7A7A' }}>
                Desarrollado por <span className="font-semibold" style={{ color: '#1B2A41' }}>@AduanaSoft</span>
              </p>
              <p className="text-xs mt-1" style={{ color: '#7A7A7A' }}>
                Solución especializada para Agentes Aduanales
              </p>
            </div>
          </div>
        </div>
        {/* Floating elements */}
        <div className="absolute -top-4 -left-4 w-24 h-24 rounded-full blur-xl" style={{ backgroundColor: 'rgba(255, 255, 255, 0.1)' }}></div>
        <div className="absolute -bottom-4 -right-4 w-32 h-32 rounded-full blur-xl" style={{ backgroundColor: 'rgba(27, 42, 65, 0.2)' }}></div>
      </div>
    </div>
  );
}
