Drop support for non-continuous TOTP copy

clip/totp.go

@@ -1,3 +1,5 @@
+//go:build (!android && !ios) || termux
+
 package clip
 
 import (
@@ -29,16 +31,7 @@ func GenTOTP(secret string, time time.Time, forSteam bool) (string, error) {
 
 // TOTPCopier is meant to be run as a goroutine to keep
 // the clipboard up-to-date with the latest TOTP token.
-// Set oneTime to -1 for a one-time (non-continuous) TOTP copy.
-// For oneTime mode, this function can be used normally (not as a goroutine).
 func TOTPCopier(secret string, oneTime int, errorChan chan<- error, done <-chan bool) error {
-	var writeErrorChan func(err error)
-	if errorChan != nil {
-		writeErrorChan = func(err error) { errorChan <- err }
-	} else {
-		writeErrorChan = func(err error) {}
-	}
-
 	var forSteam bool
 	if strings.HasPrefix(secret, "steam@") {
 		secret = secret[6:]
@@ -49,16 +42,16 @@ func TOTPCopier(secret string, oneTime int, errorChan chan<- error, done <-chan
 		currentTime := time.Now()
 		token, err := GenTOTP(secret, currentTime, forSteam)
 		if err != nil {
-			writeErrorChan(err)
+			errorChan <- err
 			return err // return for when not used as goroutine; should exit on error regardless
 		}
-		err = CopyString(true, token)
+		err = CopyString(false, token)
 		if err != nil {
-			writeErrorChan(err)
+			errorChan <- err
 			return err // return for when not used as goroutine; should exit on error regardless
 		}
 		if oneTime != -1 {
-			writeErrorChan(err)
+			errorChan <- err
 			time.Sleep(time.Duration(30-(currentTime.Second()%30)) * time.Second)
 		} else {
 			return nil
@@ -67,7 +60,7 @@ func TOTPCopier(secret string, oneTime int, errorChan chan<- error, done <-chan
 		// exit after sleep if indicated (will not update clipboard again)
 		select {
 		case <-done:
-			writeErrorChan(nil)
+			errorChan <- err
 			return nil
 		default:
 		}