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270
apps/website/lib/utils/validation.ts
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270
apps/website/lib/utils/validation.ts
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/**
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* Form Validation Utilities for GridPilot
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*
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* Provides reusable validation functions and schemas for common form fields
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*/
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export interface ValidationResult {
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isValid: boolean;
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errors: string[];
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}
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export interface ValidationRule<T> {
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validate: (value: T) => boolean;
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message: string;
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}
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/**
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* Email validation
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*/
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export const emailValidation = (email: string): ValidationResult => {
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const errors: string[] = [];
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if (!email.trim()) {
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errors.push('Email is required');
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} else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
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errors.push('Invalid email format');
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}
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return {
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isValid: errors.length === 0,
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errors,
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};
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};
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/**
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* Password validation
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*/
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export const passwordValidation = (password: string): ValidationResult => {
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const errors: string[] = [];
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if (!password) {
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errors.push('Password is required');
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} else {
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if (password.length < 8) {
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errors.push('Password must be at least 8 characters');
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}
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if (!/[a-z]/.test(password) || !/[A-Z]/.test(password)) {
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errors.push('Password must contain uppercase and lowercase letters');
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}
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if (!/\d/.test(password)) {
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errors.push('Password must contain at least one number');
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}
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}
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return {
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isValid: errors.length === 0,
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errors,
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};
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};
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/**
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* Name validation (for display names, first names, last names)
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*/
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export const nameValidation = (name: string, field: string = 'Name'): ValidationResult => {
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const errors: string[] = [];
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const trimmed = name.trim();
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if (!trimmed) {
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errors.push(`${field} is required`);
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} else if (trimmed.length < 2) {
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errors.push(`${field} must be at least 2 characters`);
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} else if (trimmed.length > 25) {
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errors.push(`${field} must be no more than 25 characters`);
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} else if (!/^[A-Za-z\-']+$/.test(trimmed)) {
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errors.push(`${field} can only contain letters, hyphens, and apostrophes`);
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} else if (/^(user|test|demo|guest|player)/i.test(trimmed)) {
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errors.push(`Please use your real ${field.toLowerCase()}, not a nickname`);
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}
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return {
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isValid: errors.length === 0,
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errors,
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};
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};
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/**
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* Confirm password validation
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*/
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export const confirmPasswordValidation = (
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password: string,
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confirmPassword: string
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): ValidationResult => {
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const errors: string[] = [];
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if (!confirmPassword) {
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errors.push('Please confirm your password');
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} else if (password !== confirmPassword) {
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errors.push('Passwords do not match');
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}
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return {
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isValid: errors.length === 0,
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errors,
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};
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};
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/**
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* Login form validation
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*/
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export interface LoginFormValues {
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email: string;
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password: string;
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rememberMe?: boolean;
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}
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export const validateLoginForm = (values: LoginFormValues): Record<string, string> => {
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const errors: Record<string, string> = {};
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const emailResult = emailValidation(values.email);
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if (!emailResult.isValid) {
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errors.email = emailResult.errors[0];
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}
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const passwordResult = passwordValidation(values.password);
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if (!passwordResult.isValid) {
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errors.password = passwordResult.errors[0];
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}
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return errors;
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};
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/**
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* Signup form validation
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*/
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export interface SignupFormValues {
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firstName: string;
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lastName: string;
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email: string;
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password: string;
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confirmPassword: string;
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}
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export const validateSignupForm = (values: SignupFormValues): Record<string, string> => {
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const errors: Record<string, string> = {};
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const firstNameResult = nameValidation(values.firstName, 'First name');
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if (!firstNameResult.isValid) {
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errors.firstName = firstNameResult.errors[0];
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}
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const lastNameResult = nameValidation(values.lastName, 'Last name');
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if (!lastNameResult.isValid) {
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errors.lastName = lastNameResult.errors[0];
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}
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const emailResult = emailValidation(values.email);
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if (!emailResult.isValid) {
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errors.email = emailResult.errors[0];
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}
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const passwordResult = passwordValidation(values.password);
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if (!passwordResult.isValid) {
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errors.password = passwordResult.errors[0];
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}
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const confirmPasswordResult = confirmPasswordValidation(values.password, values.confirmPassword);
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if (!confirmPasswordResult.isValid) {
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errors.confirmPassword = confirmPasswordResult.errors[0];
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}
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return errors;
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};
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/**
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* Password strength checker
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*/
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export interface PasswordStrength {
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score: number; // 0-5
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label: string;
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color: string;
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requirements: Array<{ met: boolean; label: string }>;
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}
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export function checkPasswordStrength(password: string): PasswordStrength {
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let score = 0;
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const requirements = [
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{ met: password.length >= 8, label: 'At least 8 characters' },
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{ met: password.length >= 12, label: 'At least 12 characters' },
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{ met: /[a-z]/.test(password) && /[A-Z]/.test(password), label: 'Upper and lowercase letters' },
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{ met: /\d/.test(password), label: 'At least one number' },
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{ met: /[^a-zA-Z\d]/.test(password), label: 'At least one special character' },
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];
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requirements.forEach(req => {
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if (req.met) score++;
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});
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let label = 'Weak';
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let color = 'bg-red-500';
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if (score <= 1) {
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label = 'Weak';
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color = 'bg-red-500';
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} else if (score <= 2) {
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label = 'Fair';
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color = 'bg-warning-amber';
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} else if (score <= 3) {
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label = 'Good';
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color = 'bg-primary-blue';
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} else {
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label = 'Strong';
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color = 'bg-performance-green';
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}
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return {
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score,
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label,
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color,
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requirements,
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};
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}
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/**
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* Field validation helper for real-time validation
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*/
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export function createFieldValidator<T>(rules: Array<ValidationRule<T>>) {
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return (value: T): ValidationResult => {
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const errors: string[] = [];
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for (const rule of rules) {
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if (!rule.validate(value)) {
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errors.push(rule.message);
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break; // Stop at first failure
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}
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}
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return {
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isValid: errors.length === 0,
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errors,
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};
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};
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}
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/**
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* Common validation rules
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*/
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export const requiredRule: ValidationRule<string> = {
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validate: (value) => value.trim().length > 0,
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message: 'This field is required',
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};
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export const minLengthRule = (min: number): ValidationRule<string> => ({
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validate: (value) => value.length >= min,
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message: `Must be at least ${min} characters`,
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});
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export const maxLengthRule = (max: number): ValidationRule<string> => ({
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validate: (value) => value.length <= max,
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message: `Must be no more than ${max} characters`,
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});
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export const emailRule: ValidationRule<string> = {
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validate: (value) => /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(value),
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message: 'Invalid email format',
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};
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export const noSpacesRule: ValidationRule<string> = {
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validate: (value) => !/\s/.test(value),
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message: 'No spaces allowed',
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};
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