94 lines
2.0 KiB
Go
94 lines
2.0 KiB
Go
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package domain
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import (
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"fmt"
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"regexp"
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"strings"
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"unicode/utf8"
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)
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// Validation errors
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var (
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ErrEmptyField = fmt.Errorf("field cannot be empty")
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ErrInvalidEmail = fmt.Errorf("invalid email format")
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ErrInvalidPhone = fmt.Errorf("invalid phone format")
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ErrPasswordTooShort = fmt.Errorf("password is too short")
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ErrPasswordTooLong = fmt.Errorf("password is too long")
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ErrInvalidLength = fmt.Errorf("invalid field length")
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)
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// Email validation regex
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var emailRegex = regexp.MustCompile(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`)
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// Phone validation regex (supports international formats)
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var phoneRegex = regexp.MustCompile(`^\+?[1-9]\d{2,14}$`)
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// ValidateEmail validates an email address format
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func ValidateEmail(email string) error {
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if email == "" {
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return ErrEmptyField
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}
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email = strings.TrimSpace(email)
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if !emailRegex.MatchString(email) {
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return ErrInvalidEmail
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}
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return nil
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}
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// ValidatePhone validates a phone number format
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func ValidatePhone(phone string) error {
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if phone == "" {
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return ErrEmptyField
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}
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phone = strings.TrimSpace(phone)
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if !phoneRegex.MatchString(phone) {
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return ErrInvalidPhone
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}
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return nil
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}
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// ValidatePassword validates password strength
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func ValidatePassword(password string) error {
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if password == "" {
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return ErrEmptyField
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}
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length := utf8.RuneCountInString(password)
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if length < MinPasswordLength {
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return ErrPasswordTooShort
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}
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if length > MaxPasswordLength {
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return ErrPasswordTooLong
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}
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return nil
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}
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// ValidateStringLength validates string length within specified bounds
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func ValidateStringLength(field, value string, min, max int) error {
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if value == "" {
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return ErrEmptyField
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}
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length := utf8.RuneCountInString(value)
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if length < min || length > max {
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return ErrInvalidLength
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}
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return nil
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}
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// ValidateRequired validates that a required field is not empty
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func ValidateRequired(field, value string) error {
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if strings.TrimSpace(value) == "" {
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return ErrEmptyField
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}
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return nil
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}
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