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@ -41,34 +41,3 @@ func FormatPhoneNumber(phone string) (string, error) {
return "+" + phone, nil
}
// FormatToLocalPhoneNumber converts a phone number like "+2547XXXXXXXX"
// or "2547XXXXXXXX" into the local format "07XXXXXXXX" / "01XXXXXXXX".
func FormatToLocalPhoneNumber(phone string) (string, error) {
// Remove leading "+" and spaces
phone = strings.TrimPrefix(phone, "+")
phone = strings.ReplaceAll(phone, " ", "")
// Must start with 254
if !strings.HasPrefix(phone, "254") {
return "", errors.New("invalid international phone format")
}
// Remove "254" prefix → get 7XXXXXXXX or 1XXXXXXXX
rest := phone[3:]
// Validate: must be 9 digits
if len(rest) != 9 {
return "", errors.New("invalid phone number length")
}
// Kenyan mobile numbers start with 7 or 1 (Safaricom/Airtel/Telkom prefixes)
if !(strings.HasPrefix(rest, "7") || strings.HasPrefix(rest, "1")) {
return "", errors.New("invalid Kenyan mobile prefix")
}
// Convert to local: prepend "0"
local := "0" + rest
return local, nil
}