From f54ce86de9dfa3dc30569556728ae823c0a85168 Mon Sep 17 00:00:00 2001
From: Falko Habel <falko.habel@gmx.de>
Date: Fri, 15 Mar 2024 14:42:42 +0100
Subject: [PATCH] Bug #002 Fixed. Downloading gives visuell feedback

---
 main.go | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/main.go b/main.go
index b9a14e3..8f3403d 100644
--- a/main.go
+++ b/main.go
@@ -62,6 +62,7 @@ func streamResponse(w http.ResponseWriter, fromLanguage, toLanguage string, mess
 }
 
 func downloadPackages(w http.ResponseWriter, fromLanguage, toLanguage string) {
+
 	// Create a channel to send messages from the download process
 	messages := make(chan string)
 	defer close(messages)
@@ -84,12 +85,26 @@ func downloadPackages(w http.ResponseWriter, fromLanguage, toLanguage string) {
 	}
 
 	// Initial message sent to the channel for streaming
-	messages <- "Download started . . ."
+	messages <- "Download started..."
+
+	// Start a ticker to send "..." every few seconds until we get real output
+	ticker := time.NewTicker(2 * time.Second)
+	go func() {
+		for range ticker.C {
+			messages <- ". . ."
+		}
+	}()
 
 	// Read the output of the Python command and send it to the channel
 	scanner := bufio.NewScanner(output)
+	firstOutputReceived := false
 	for scanner.Scan() {
-		messages <- scanner.Text() // Sends output line by line to the stream
+		if !firstOutputReceived {
+			// Stop the ticker after receiving the first real output
+			ticker.Stop()
+			firstOutputReceived = true
+		}
+		messages <- scanner.Text()
 	}
 
 	// Wait for the command to complete
@@ -98,6 +113,7 @@ func downloadPackages(w http.ResponseWriter, fromLanguage, toLanguage string) {
 		messages <- fmt.Sprintf("Error waiting for Download: %s", err.Error())
 		return
 	}
+	return
 }
 
 func executeTranslator(w http.ResponseWriter, message, fromLanguage, toLanguage string) {