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validator.go
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validator.go
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package val
import (
"fmt"
"net/mail"
"regexp"
)
var (
isValidUsername = regexp.MustCompile(`^[a-z0-9_]+$`).MatchString
isValidFullName = regexp.MustCompile(`^[a-zA-Z\\s]+$`).MatchString
)
func ValidateString(value string, minLength int, maxLength int) error {
n := len(value)
if n < minLength || n > maxLength {
return fmt.Errorf("must contain from %d-%d character", minLength, maxLength)
}
return nil
}
func ValidateUsername(value string) error {
if err := ValidateString(value, 3, 100); err != nil {
return err
}
if !isValidUsername(value) {
return fmt.Errorf("must contain only lowercase letters, digits, or underscore")
}
return nil
}
func ValidateFullName(value string) error {
if err := ValidateString(value, 3, 100); err != nil {
return err
}
if !isValidFullName(value) {
return fmt.Errorf("must contain only letters or space")
}
return nil
}
func ValidatePassword(value string) error {
return ValidateString(value, 6, 100)
}
func ValidateEmail(value string) error {
if err := ValidateString(value, 3, 200); err != nil {
return err
}
if _, err := mail.ParseAddress(value); err != nil {
return fmt.Errorf("is not a valid email affress")
}
return nil
}
func ValidateEmailId(value int64) error {
if value <= 0 {
return fmt.Errorf("must be a positive integer")
}
return nil
}
func ValidateSecretCode(value string) error {
return ValidateString(value, 32, 128)
}