feat: auto detect whatsapp account before send

src/pkg/whatsapp/whatsapp.go

@@ -116,8 +116,31 @@ func ParseJID(arg string) (types.JID, error) {
 	}
 }
 
+func isOnWhatsapp(waCli *whatsmeow.Client, jid string) bool {
+	// only check if the jid a user with @s.whatsapp.net
+	if strings.Contains(jid, "@s.whatsapp.net") {
+		data, err := waCli.IsOnWhatsApp([]string{jid})
+		if err != nil {
+			panic(pkgError.InvalidJID(err.Error()))
+		}
+
+		for _, v := range data {
+			if !v.IsIn {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
 func ValidateJidWithLogin(waCli *whatsmeow.Client, jid string) (types.JID, error) {
 	MustLogin(waCli)
+
+	if !isOnWhatsapp(waCli, jid) {
+		return types.JID{}, pkgError.InvalidJID(fmt.Sprintf("Phone %s is not on whatsapp", jid))
+	}
+
 	return ParseJID(jid)
 }