"use client";

import * as React from 'react';

import {
  ArrowRightIcon,
  CheckCircleIcon,
  EyeIcon,
  EyeOffIcon,
  KeyIcon,
  LockIcon,
  ShieldIcon,
  UserIcon,
} from 'lucide-react';
import { Button } from '@/components/ui/button';
import {
  Card,
  CardContent,
  CardDescription,
  CardFooter,
  CardHeader,
  CardTitle,
} from '@/components/ui/card';
import {
  Field,
  FieldDescription,
  FieldGroup,
  FieldLabel,
} from '@/components/ui/field';
import { Input } from '@/components/ui/input';
import { Alert, AlertDescription } from '@/components/ui/alert';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { Badge } from '@/components/ui/badge';

export default function SecurityQuestionReset() {
  const [currentStep, setCurrentStep] = React.useState<
    'identify' | 'verify' | 'reset' | 'success'
  >('identify');
  const [userName, setUserName] = React.useState('');
  const [isPasswordVisible, setIsPasswordVisible] = React.useState(false);
  const [isConfirmPasswordVisible, setIsConfirmPasswordVisible] =
    React.useState(false);

  function onSubmitIdentity(e: React.FormEvent) {
    e.preventDefault();
    const form = e.currentTarget as HTMLFormElement;
    const username = (form.elements.namedItem('username') as HTMLInputElement)
      ?.value ?? '';
    setUserName(username);
    setCurrentStep('verify');
  }

  function onSubmitSecurity(e: React.FormEvent) {
    e.preventDefault();
    setCurrentStep('reset');
  }

  function onSubmitPassword(e: React.FormEvent) {
    e.preventDefault();
    setCurrentStep('success');
  }

  const togglePasswordVisibility = () => {
    setIsPasswordVisible(!isPasswordVisible);
  };

  const toggleConfirmPasswordVisibility = () => {
    setIsConfirmPasswordVisible(!isConfirmPasswordVisible);
  };

  const securityQuestions = [
    'What was the name of your first pet?',
    'What was your childhood nickname?',
    'In what city were you born?',
    "What is your mother's maiden name?",
    'What high school did you attend?',
    'What was the make of your first car?',
    'What is your favorite movie?',
    'What is the name of your favorite childhood teacher?',
  ];

  return (
    <div className="container mx-auto px-4 py-8 md:px-6 md:py-12">
      <Card className="mx-auto max-w-lg">
        {/* Header section with title and description */}
        <CardHeader className="text-center">
          <div className="bg-muted/50 mx-auto flex h-12 w-12 items-center justify-center rounded-full border">
            {currentStep === 'identify' && <UserIcon className="h-6 w-6" />}
            {currentStep === 'verify' && <ShieldIcon className="h-6 w-6" />}
            {currentStep === 'reset' && <LockIcon className="h-6 w-6" />}
            {currentStep === 'success' && (
              <CheckCircleIcon className="h-6 w-6 text-green-600" />
            )}
          </div>
          <CardTitle className="text-2xl">Reset Your Password</CardTitle>
          <CardDescription>
            {currentStep === 'identify' && "First, let's identify your account"}
            {currentStep === 'verify' &&
              'Verify your identity with a security question'}
            {currentStep === 'reset' && 'Create a new secure password'}
            {currentStep === 'success' &&
              'Your password has been reset successfully'}
          </CardDescription>

          {/* Progress bar */}
          <div className="mt-6 flex w-full items-center gap-2">
            <div
              className={`h-2 flex-1 rounded-full ${
                currentStep !== 'identify' ? 'bg-primary' : 'bg-primary/30'
              }`}
            ></div>
            <div
              className={`h-2 flex-1 rounded-full ${
                currentStep === 'verify' ||
                currentStep === 'reset' ||
                currentStep === 'success'
                  ? 'bg-primary'
                  : 'bg-primary/30'
              }`}
            ></div>
            <div
              className={`h-2 flex-1 rounded-full ${
                currentStep === 'reset' || currentStep === 'success'
                  ? 'bg-primary'
                  : 'bg-primary/30'
              }`}
            ></div>
            <div
              className={`h-2 flex-1 rounded-full ${
                currentStep === 'success' ? 'bg-primary' : 'bg-primary/30'
              }`}
            ></div>
          </div>
        </CardHeader>

        <CardContent className="space-y-4 px-6 py-4">
          {/* Step 1: Identify account */}
          {currentStep === 'identify' && (
            <form onSubmit={onSubmitIdentity} className="space-y-4">
              <Alert>
                <AlertDescription>
                  Please enter your email address and username to locate your
                  account.
                </AlertDescription>
              </Alert>

              <FieldGroup>
                <Field>
                  <FieldLabel htmlFor="identity-email">
                    Email Address
                  </FieldLabel>
                  <Input
                    id="identity-email"
                    name="email"
                    placeholder="Enter your email"
                  />
                </Field>

                <Field>
                  <FieldLabel htmlFor="identity-username">Username</FieldLabel>
                  <Input
                    id="identity-username"
                    name="username"
                    placeholder="Enter your username"
                  />
                </Field>
              </FieldGroup>

              <Button type="submit" className="w-full">
                Continue <ArrowRightIcon className="ml-2 h-4 w-4" />
              </Button>
            </form>
          )}

          {/* Step 2: Security question verification */}
          {currentStep === 'verify' && (
            <form onSubmit={onSubmitSecurity} className="space-y-4">
              <div className="bg-muted rounded-lg p-3">
                <h3 className="mb-1 text-sm font-medium">Account Found</h3>
                <div className="flex items-center gap-2">
                  <UserIcon className="h-4 w-4" />
                  <span className="text-sm">{userName}</span>
                  <Badge variant="outline" className="ml-auto text-xs">
                    Pending Verification
                  </Badge>
                </div>
              </div>

              <Alert className="bg-yellow-50 text-yellow-800 dark:bg-yellow-900 dark:text-yellow-300">
                <AlertDescription>
                  Please answer your security question to verify your identity.
                </AlertDescription>
              </Alert>

              <FieldGroup>
                <Field>
                  <FieldLabel htmlFor="security-question">
                    Security Question
                  </FieldLabel>
                  <Select>
                    <SelectTrigger id="security-question">
                      <SelectValue placeholder="Select a security question" />
                    </SelectTrigger>
                    <SelectContent>
                      {securityQuestions.map((question) => (
                        <SelectItem key={question} value={question}>
                          {question}
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </Field>

                <Field>
                  <FieldLabel htmlFor="security-answer">Your Answer</FieldLabel>
                  <Input
                    id="security-answer"
                    placeholder="Enter your answer"
                  />
                  <FieldDescription>
                    Answers are case-sensitive and must match exactly what you
                    provided when setting up your account.
                  </FieldDescription>
                </Field>
              </FieldGroup>

              <Button type="submit" className="w-full">
                Verify Identity
              </Button>
            </form>
          )}

          {/* Step 3: Create new password */}
          {currentStep === 'reset' && (
            <form onSubmit={onSubmitPassword} className="space-y-4">
              <Alert className="bg-green-50 text-green-800 dark:bg-green-900 dark:text-green-300">
                <KeyIcon className="h-4 w-4" />
                <AlertDescription>
                  Your identity has been verified. Please create a new password
                  for your account.
                </AlertDescription>
              </Alert>

              <FieldGroup>
                <Field>
                  <FieldLabel htmlFor="new-password">New Password</FieldLabel>
                  <div className="relative">
                    <Input
                      id="new-password"
                      placeholder="••••••••"
                      type={isPasswordVisible ? 'text' : 'password'}
                    />
                    <Button
                      type="button"
                      variant="ghost"
                      size="icon"
                      className="text-muted-foreground absolute top-0 right-0 h-full px-3 py-2"
                      onClick={togglePasswordVisibility}
                    >
                      {isPasswordVisible ? (
                        <EyeOffIcon className="h-4 w-4" />
                      ) : (
                        <EyeIcon className="h-4 w-4" />
                      )}
                      <span className="sr-only">
                        Toggle password visibility
                      </span>
                    </Button>
                  </div>
                  <FieldDescription>
                    Password must be at least 8 characters with uppercase,
                    lowercase, and number.
                  </FieldDescription>
                </Field>

                <Field>
                  <FieldLabel htmlFor="confirm-password">
                    Confirm Password
                  </FieldLabel>
                  <div className="relative">
                    <Input
                      id="confirm-password"
                      placeholder="••••••••"
                      type={isConfirmPasswordVisible ? 'text' : 'password'}
                    />
                    <Button
                      type="button"
                      variant="ghost"
                      size="icon"
                      className="text-muted-foreground absolute top-0 right-0 h-full px-3 py-2"
                      onClick={toggleConfirmPasswordVisibility}
                    >
                      {isConfirmPasswordVisible ? (
                        <EyeOffIcon className="h-4 w-4" />
                      ) : (
                        <EyeIcon className="h-4 w-4" />
                      )}
                      <span className="sr-only">
                        Toggle confirm password visibility
                      </span>
                    </Button>
                  </div>
                </Field>
              </FieldGroup>

              <Button type="submit" className="w-full">
                Reset Password
              </Button>
            </form>
          )}

          {/* Step 4: Success */}
          {currentStep === 'success' && (
            <div className="space-y-6 py-4">
              <div className="mx-auto flex h-20 w-20 items-center justify-center rounded-full bg-green-100">
                <CheckCircleIcon className="h-10 w-10 text-green-600" />
              </div>

              <div className="text-center">
                <h3 className="mb-2 text-xl font-medium">
                  Password Reset Complete
                </h3>
                <p className="text-muted-foreground">
                  Your password has been successfully reset. You can now log in
                  with your new credentials.
                </p>
              </div>

              <Button asChild className="w-full">
                <a href="#">Sign In</a>
              </Button>

              <div className="bg-muted rounded-lg p-4">
                <h4 className="mb-2 text-sm font-medium">
                  Security Recommendations
                </h4>
                <ul className="text-muted-foreground space-y-1 text-sm">
                  <li className="flex items-center gap-2">
                    <div className="bg-primary h-1.5 w-1.5 rounded-full"></div>
                    <span>Use a different password for each account</span>
                  </li>
                  <li className="flex items-center gap-2">
                    <div className="bg-primary h-1.5 w-1.5 rounded-full"></div>
                    <span>
                      Enable two-factor authentication where available
                    </span>
                  </li>
                  <li className="flex items-center gap-2">
                    <div className="bg-primary h-1.5 w-1.5 rounded-full"></div>
                    <span>Consider using a password manager</span>
                  </li>
                </ul>
              </div>
            </div>
          )}
        </CardContent>

        <CardFooter className="flex flex-col justify-center border-t px-6 py-4">
          {currentStep !== 'success' && (
            <div className="flex w-full flex-col items-center gap-2">
              <p className="text-muted-foreground text-sm">
                Remember your password?{' '}
                <a href="#" className="text-primary font-medium">
                  Sign in instead
                </a>
              </p>
              {currentStep !== 'identify' && (
                <Button
                  variant="ghost"
                  size="sm"
                  className="h-auto p-0 text-xs"
                  onClick={() => setCurrentStep('identify')}
                >
                  Start over
                </Button>
              )}
            </div>
          )}
        </CardFooter>
      </Card>
    </div>
  );
}