349 lines
11 KiB
Dart
349 lines
11 KiB
Dart
import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:intl_phone_field/intl_phone_field.dart';
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import 'package:medora/data/services/data_service.dart';
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import 'package:medora/data/services/navigation_service.dart';
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import 'package:medora/widgets/primary_button.dart';
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class SignUpScreen extends StatefulWidget {
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// final String selectedUserType;
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const SignUpScreen({
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super.key,
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// required this.selectedUserType,
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});
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@override
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State<SignUpScreen> createState() => _SignUpScreenState();
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}
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class _SignUpScreenState extends State<SignUpScreen> {
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final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
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final _emailController = TextEditingController();
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final _passwordController = TextEditingController();
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String _completePhoneNumber = '';
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bool _isLoading = false;
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bool _obscurePassword = true;
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// Add focus nodes to handle keyboard navigation
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final _emailFocusNode = FocusNode();
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final _passwordFocusNode = FocusNode();
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// Email validation patterns
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final RegExp _emailRegex = RegExp(
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r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$',
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caseSensitive: false,
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);
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// Common email domain validation
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final List<String> _commonEmailDomains = [
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'gmail.com',
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'yahoo.com',
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'hotmail.com',
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'outlook.com'
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];
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String? _validateEmail(String? value) {
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if (value == null || value.isEmpty) {
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return 'Email address is required';
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}
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value = value.trim();
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// Basic format validation
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if (!_emailRegex.hasMatch(value)) {
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return 'Please enter a valid email address';
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}
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// Check email length
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if (value.length > 254) {
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return 'Email address is too long';
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}
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// Split email into local and domain parts
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final parts = value.split('@');
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if (parts.length != 2) {
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return 'Invalid email format';
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}
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final localPart = parts[0];
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final domainPart = parts[1].toLowerCase();
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// Validate local part
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if (localPart.isEmpty || localPart.length > 64) {
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return 'Invalid email username';
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}
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// Check for common typos in popular domains
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for (final domain in _commonEmailDomains) {
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if (domainPart.length > 3 &&
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domainPart != domain &&
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_calculateLevenshteinDistance(domainPart, domain) <= 2) {
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return 'Did you mean @$domain?';
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}
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}
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// Additional domain validation
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if (!domainPart.contains('.')) {
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return 'Invalid email domain';
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}
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return null;
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}
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String? _validatePassword(String? value) {
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if (value == null || value.isEmpty) {
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return 'Password is required';
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}
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if (value.length < 6) {
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return 'Password must be at least 6 characters';
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}
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if (!value.contains(RegExp(r'[A-Z]'))) {
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return 'Password must contain at least one uppercase letter';
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}
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if (!value.contains(RegExp(r'[0-9]'))) {
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return 'Password must contain at least one number';
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}
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if (!value.contains(RegExp(r'[!@#$%^&*(),.?":{}|<>]'))) {
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return 'Password must contain at least one special character';
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}
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return null;
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}
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// Calculate Levenshtein distance for typo detection
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int _calculateLevenshteinDistance(String a, String b) {
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if (a.isEmpty) return b.length;
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if (b.isEmpty) return a.length;
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List<int> previousRow = List<int>.generate(b.length + 1, (i) => i);
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List<int> currentRow = List<int>.filled(b.length + 1, 0);
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for (int i = 0; i < a.length; i++) {
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currentRow[0] = i + 1;
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for (int j = 0; j < b.length; j++) {
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int insertCost = previousRow[j + 1] + 1;
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int deleteCost = currentRow[j] + 1;
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int replaceCost = previousRow[j] + (a[i] != b[j] ? 1 : 0);
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currentRow[j + 1] = [insertCost, deleteCost, replaceCost].reduce(min);
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}
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List<int> temp = previousRow;
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previousRow = currentRow;
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currentRow = temp;
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}
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return previousRow[b.length];
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Sign Up'),
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elevation: 0,
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),
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body: Container(
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decoration: const BoxDecoration(),
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child: Form(
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key: _formKey,
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(24.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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Text(
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'Register as doctor',
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style: Theme.of(context).textTheme.headlineLarge?.copyWith(
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 24),
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Column(
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children: [
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TextFormField(
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controller: _emailController,
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focusNode: _emailFocusNode,
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decoration: InputDecoration(
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labelText: 'Email',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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borderSide: BorderSide(color: Colors.grey.shade300),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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),
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prefixIcon: const Icon(Icons.email_outlined,
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color: Colors.blue),
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errorMaxLines: 2,
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),
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keyboardType: TextInputType.emailAddress,
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textInputAction: TextInputAction.next,
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onFieldSubmitted: (_) {
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_passwordFocusNode.requestFocus();
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},
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validator: _validateEmail,
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onChanged: (value) {
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// Trigger validation on change if the field was previously invalid
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if (_formKey.currentState?.validate() ?? false) {
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setState(() {});
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}
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},
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),
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const SizedBox(height: 16),
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TextFormField(
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controller: _passwordController,
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focusNode: _passwordFocusNode,
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decoration: InputDecoration(
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labelText: 'Password',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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borderSide: BorderSide(color: Colors.grey.shade300),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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borderSide: const BorderSide(color: Colors.blue),
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),
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prefixIcon:
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const Icon(Icons.lock_outline, color: Colors.blue),
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suffixIcon: IconButton(
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icon: Icon(
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_obscurePassword
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? Icons.visibility_off
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: Icons.visibility,
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color: Colors.blue,
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),
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onPressed: () => setState(
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() => _obscurePassword = !_obscurePassword),
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),
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errorMaxLines: 2,
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),
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obscureText: _obscurePassword,
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validator: _validatePassword,
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onChanged: (value) {
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// Trigger validation on change if the field was previously invalid
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if (_formKey.currentState?.validate() ?? false) {
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setState(() {});
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}
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},
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),
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const SizedBox(height: 16),
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IntlPhoneField(
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decoration: InputDecoration(
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labelText: 'Phone Number',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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borderSide: BorderSide(color: Colors.grey.shade300),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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borderSide: const BorderSide(color: Colors.blue),
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),
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),
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initialCountryCode: 'IN',
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onChanged: (phone) {
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_completePhoneNumber = phone.completeNumber;
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},
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validator: (phone) {
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if (phone?.completeNumber.isEmpty ?? true) {
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return 'Phone number is required';
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}
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return null;
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},
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dropdownTextStyle: const TextStyle(color: Colors.blue),
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style: const TextStyle(color: Colors.blue),
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),
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],
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),
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const SizedBox(height: 24),
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PrimaryButton(
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onPressed: _isLoading ? null : _handleSignUp,
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text: _isLoading ? 'Creating Account...' : 'Create Account',
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icon: Icons.person_add,
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),
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],
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),
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),
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),
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),
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);
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}
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Future<void> _handleSignUp() async {
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if (_formKey.currentState == null || !_formKey.currentState!.validate()) {
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_showErrorSnackBar('Please fix the errors in the form');
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return;
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}
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setState(() {
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_isLoading = true;
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});
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try {
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final result = await DataService.createUserProfile(
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email: _emailController.text.trim(),
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password: _passwordController.text,
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userType: 'doctor',
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phoneNumber: _completePhoneNumber,
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);
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if (mounted) {
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if (result['success']) {
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await NavigationService.handleDoctorNavigation(context);
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} else {
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_showErrorSnackBar(result['message']);
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}
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}
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} catch (e) {
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if (mounted) {
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_showErrorSnackBar('An unexpected error occurred. Please try again.');
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}
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} finally {
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if (mounted) {
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setState(() {
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_isLoading = false;
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});
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}
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}
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}
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void _showErrorSnackBar(String message) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(message),
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backgroundColor: Colors.red,
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behavior: SnackBarBehavior.floating,
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margin: const EdgeInsets.all(16),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(8),
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),
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),
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);
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}
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@override
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void dispose() {
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_emailController.dispose();
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_passwordController.dispose();
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_emailFocusNode.dispose();
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_passwordFocusNode.dispose();
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super.dispose();
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}
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}
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