Files
website/app/internal/contactcheck/english.go
Jimmy bf110d0bc7 Split compose dev/prod and relax contact form friction.
Use compose.dev.yaml and compose.prod.yaml with fixed Go cache mounts, block sudo make dev, build Air outside app/tmp for rootless Docker, soften English spam checks, and simplify contact error copy.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-07 11:41:13 +12:00

57 lines
1.3 KiB
Go

package contactcheck
import (
"errors"
"strings"
"unicode"
"github.com/abadojack/whatlanggo"
)
const (
minMessageRunes = 20
maxMessageRunes = 8000
maxNameRunes = 120
// Reject non-English only when the detector is fairly confident.
englishRejectConfidence = 0.80
)
var (
ErrNotEnglish = errors.New("message must be in English")
ErrTooShort = errors.New("message too short")
ErrTooLong = errors.New("message too long")
ErrName = errors.New("name too long")
)
// ValidateEnglish checks script and language for name + message combined.
func ValidateEnglish(name, message string) error {
msg := strings.TrimSpace(message)
nMsg := len([]rune(msg))
if nMsg < minMessageRunes {
return ErrTooShort
}
if nMsg > maxMessageRunes {
return ErrTooLong
}
if len([]rune(strings.TrimSpace(name))) > maxNameRunes {
return ErrName
}
combined := strings.TrimSpace(name) + "\n\n" + msg
info := whatlanggo.Detect(combined)
// Block clearly non-Latin scripts (CJK, Cyrillic, etc.).
if info.Script != nil && info.Script != unicode.Latin {
return ErrNotEnglish
}
// Allow uncertain detection; block only confident non-English.
if info.Lang != whatlanggo.Eng && info.IsReliable() {
return ErrNotEnglish
}
if info.Lang != whatlanggo.Eng && info.Confidence >= englishRejectConfidence {
return ErrNotEnglish
}
return nil
}