import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

class PasswordScreen extends StatefulWidget {
  const PasswordScreen({super.key});

  @override
  State<PasswordScreen> createState() => _PasswordScreenState();
}

class _PasswordScreenState extends State<PasswordScreen> {
  final TextEditingController _passwordController = TextEditingController();
  final TextEditingController _confirmPasswordController =
      TextEditingController();
  final FocusNode _passwordFocusNode = FocusNode();
  final FocusNode _confirmPasswordFocusNode = FocusNode();
  bool _obscurePassword = true;
  bool _obscureConfirmPassword = true;

  @override
  void dispose() {
    _passwordController.dispose();
    _confirmPasswordController.dispose();
    _passwordFocusNode.dispose();
    _confirmPasswordFocusNode.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SingleChildScrollView(
        child: Padding(
          padding: const EdgeInsets.all(25),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              SizedBox(height: 75),
              Text(
                'Set New Password',
                style: TextStyle(
                  fontSize: 30,
                  fontWeight: FontWeight.bold,
                  color: Theme.of(context).colorScheme.primary,
                ),
              ),
              SizedBox(height: 5),
              Text(
                'Create a strong password to secure your account',
                style: TextStyle(fontSize: 18),
                textAlign: TextAlign.center,
              ),
              Image.asset('assets/password.png', width: 300),
              // Password Input
              TextField(
                controller: _passwordController,
                focusNode: _passwordFocusNode,
                obscureText: _obscurePassword,
                decoration: InputDecoration(
                  labelText: 'New Password',
                  hintText: 'Enter your new password',
                  border: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(color: Colors.grey.shade300),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(
                      color: Theme.of(context).colorScheme.primary,
                      width: 2,
                    ),
                  ),
                  contentPadding: EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 16,
                  ),
                  suffixIcon: IconButton(
                    icon: Icon(
                      _obscurePassword
                          ? Icons.visibility
                          : Icons.visibility_off,
                      color: Colors.grey.shade600,
                    ),
                    onPressed: () {
                      setState(() {
                        _obscurePassword = !_obscurePassword;
                      });
                    },
                  ),
                ),
              ),
              SizedBox(height: 20),
              // Confirm Password Input
              TextField(
                controller: _confirmPasswordController,
                focusNode: _confirmPasswordFocusNode,
                obscureText: _obscureConfirmPassword,
                decoration: InputDecoration(
                  labelText: 'Confirm Password',
                  hintText: 'Confirm your new password',
                  border: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(color: Colors.grey.shade300),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(
                      color: Theme.of(context).colorScheme.primary,
                      width: 2,
                    ),
                  ),
                  contentPadding: EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 16,
                  ),
                  suffixIcon: IconButton(
                    icon: Icon(
                      _obscureConfirmPassword
                          ? Icons.visibility
                          : Icons.visibility_off,
                      color: Colors.grey.shade600,
                    ),
                    onPressed: () {
                      setState(() {
                        _obscureConfirmPassword = !_obscureConfirmPassword;
                      });
                    },
                  ),
                ),
              ),
              SizedBox(height: 20),
              // Password Requirements
              Container(
                padding: EdgeInsets.all(16),
                decoration: BoxDecoration(
                  color: Colors.grey.shade50,
                  borderRadius: BorderRadius.circular(12),
                  border: Border.all(color: Colors.grey.shade200),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Password Requirements:',
                      style: TextStyle(
                        fontWeight: FontWeight.w600,
                        fontSize: 14,
                        color: Colors.grey.shade700,
                      ),
                    ),
                    SizedBox(height: 8),
                    _buildRequirement('At least 8 characters', true),
                    _buildRequirement('Contains uppercase letter', true),
                    _buildRequirement('Contains lowercase letter', true),
                    _buildRequirement('Contains number', true),
                    _buildRequirement('Contains special character', false),
                  ],
                ),
              ),
              SizedBox(height: 40),
            ],
          ),
        ),
      ),
      bottomNavigationBar: SizedBox(
        height: 130,
        child: Column(
          children: [
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 25),
              child: Row(
                children: [
                  Expanded(
                    child: ElevatedButton(
                      onPressed: () {
                        // TODO: Add password update logic
                        String password = _passwordController.text;
                        String confirmPassword =
                            _confirmPasswordController.text;
                        print('Password: $password');
                        print('Confirm Password: $confirmPassword');

                        context.go('/onboarding/login');
                      },
                      style: ElevatedButton.styleFrom(
                        padding: EdgeInsets.symmetric(vertical: 16),
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(12),
                        ),
                      ),
                      child: Text(
                        'Update Password',
                        style: TextStyle(fontSize: 16),
                      ),
                    ),
                  ),
                  SizedBox(width: 16),
                  Expanded(
                    child: OutlinedButton(
                      onPressed: () {
                        context.go('/onboarding/login');
                      },
                      style: OutlinedButton.styleFrom(
                        padding: EdgeInsets.symmetric(vertical: 16),
                        side: BorderSide(color: Colors.grey.shade300),
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(12),
                        ),
                      ),
                      child: Text(
                        'Back to Login',
                        style: TextStyle(fontSize: 16),
                      ),
                    ),
                  ),
                ],
              ),
            ),
            SizedBox(height: 20),
            TextButton(
              onPressed: () {
                context.go('/');
              },
              child: Text('Continue as guest?', style: TextStyle(fontSize: 14)),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildRequirement(String text, bool isMet) {
    return Padding(
      padding: EdgeInsets.symmetric(vertical: 2),
      child: Row(
        children: [
          Icon(
            isMet ? Icons.check_circle : Icons.circle_outlined,
            size: 16,
            color: isMet ? Colors.green : Colors.grey.shade600,
          ),
          SizedBox(width: 8),
          Text(
            text,
            style: TextStyle(
              fontSize: 12,
              color: isMet ? Colors.grey.shade600 : Colors.grey.shade400,
            ),
          ),
        ],
      ),
    );
  }
}