popertotsandSisyphus
5f0248540f
Add ValidateEmail and NormalizeGiftCardCode functions with comprehensive tests. Migrate guest.go from inline mail.ParseAddress to validators.ValidateEmail. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
package validators
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import (
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"errors"
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"net/mail"
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"regexp"
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"strings"
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)
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var emailRegex = regexp.MustCompile(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`)
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// ValidateEmail checks that an email is non-empty, within length limits,
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// and conforms to both RFC 5322 (via net/mail) and a basic regex shape.
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func ValidateEmail(email string) error {
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email = strings.TrimSpace(email)
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if email == "" {
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return errors.New("email is required")
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}
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if len(email) > 254 {
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return errors.New("email exceeds maximum length of 254 characters")
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}
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if _, err := mail.ParseAddress(email); err != nil {
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return errors.New("invalid email format")
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}
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if !emailRegex.MatchString(email) {
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return errors.New("invalid email format")
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}
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return nil
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}
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// NormalizeGiftCardCode strips non-alphanumeric characters and upper-cases the code.
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func NormalizeGiftCardCode(code string) string {
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clean := ""
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for _, char := range code {
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if (char >= 'a' && char <= 'z') || (char >= 'A' && char <= 'Z') || (char >= '0' && char <= '9') {
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clean += string(char)
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}
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}
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return clean
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}
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