import { createFileRoute, Link } from '@tanstack/react-router';
import { z } from 'zod';
import { useState } from 'react';
import { CheckCircle, Lock, Loader2, Eye, EyeOff } from 'lucide-react';
import { apiClient } from '@/infrastructure/http/ApiClient';
import { RESET_PASSWORD } from '@archer/api-interface/endpoints/customer-api';

const resetPasswordSearchSchema = z.object({
  token: z.string(),
});

export const Route = createFileRoute('/auth/reset-password')({
  validateSearch: resetPasswordSearchSchema,
  component: ResetPasswordPage,
});

function ResetPasswordPage() {
  const { token } = Route.useSearch();
  const [password, setPassword] = useState('');
  const [confirmPassword, setConfirmPassword] = useState('');
  const [showPassword, setShowPassword] = useState(false);
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [isSuccess, setIsSuccess] = useState(false);
  const [error, setError] = useState('');

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError('');

    if (password.length < 8) {
      setError('Password must be at least 8 characters.');
      return;
    }
    if (password !== confirmPassword) {
      setError('Passwords do not match.');
      return;
    }

    setIsSubmitting(true);
    try {
      await apiClient.post(RESET_PASSWORD.path, { token, newPassword: password });
      setIsSuccess(true);
    } catch (err: any) {
      setError(err?.response?.data?.message || 'Failed to reset password. The link may be expired.');
    } finally {
      setIsSubmitting(false);
    }
  };

  if (isSuccess) {
    return (
      <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4">
        <div className="max-w-md w-full bg-white rounded-2xl shadow-lg p-8 text-center">
          <CheckCircle className="w-12 h-12 text-green-500 mx-auto mb-4" />
          <h2 className="text-xl font-semibold text-gray-900 mb-2">Password Reset</h2>
          <p className="text-gray-600 mb-6">Your password has been reset successfully.</p>
          <Link to="/login" className="inline-block bg-blue-600 text-white px-6 py-2.5 rounded-lg font-medium hover:bg-blue-700 transition-colors">
            Sign In
          </Link>
        </div>
      </div>
    );
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4">
      <div className="max-w-md w-full bg-white rounded-2xl shadow-lg p-8">
        <h2 className="text-2xl font-bold text-gray-900 mb-2 text-center">Set New Password</h2>
        <p className="text-gray-500 text-sm text-center mb-6">Choose a new password for your account.</p>

        {error && (
          <div className="mb-4 p-3 bg-red-50 border border-red-200 rounded-lg text-sm text-red-700">
            {error}
          </div>
        )}

        <form onSubmit={handleSubmit} className="space-y-4">
          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">New Password</label>
            <div className="relative">
              <Lock className="absolute left-3 top-1/2 -translate-y-1/2 w-5 h-5 text-gray-400" />
              <input
                type={showPassword ? 'text' : 'password'}
                value={password}
                onChange={e => setPassword(e.target.value)}
                className="w-full pl-10 pr-10 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"
                placeholder="Min. 8 characters"
                required
              />
              <button type="button" onClick={() => setShowPassword(!showPassword)}
                className="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 hover:text-gray-600">
                {showPassword ? <EyeOff className="w-5 h-5" /> : <Eye className="w-5 h-5" />}
              </button>
            </div>
          </div>

          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">Confirm Password</label>
            <div className="relative">
              <Lock className="absolute left-3 top-1/2 -translate-y-1/2 w-5 h-5 text-gray-400" />
              <input
                type={showPassword ? 'text' : 'password'}
                value={confirmPassword}
                onChange={e => setConfirmPassword(e.target.value)}
                className="w-full pl-10 pr-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"
                placeholder="Repeat your password"
                required
              />
            </div>
          </div>

          <button type="submit" disabled={isSubmitting}
            className="w-full bg-blue-600 text-white py-2.5 rounded-lg font-medium hover:bg-blue-700 transition-colors disabled:opacity-50 disabled:cursor-not-allowed flex items-center justify-center gap-2">
            {isSubmitting ? <><Loader2 className="w-4 h-4 animate-spin" /> Resetting...</> : 'Reset Password'}
          </button>
        </form>
      </div>
    </div>
  );
}