Refactor log handling and add UI auto-update toggle

This commit refactors the log handling in the API to use a switch statement for improved readability and maintainability. It also introduces error messages with more context when reading or truncating the log file fails.

On the frontend, a new auto-update toggle button has been added to the log viewer, allowing users to enable or disable automatic log updates. The button's appearance changes based on its state, providing a clear visual indication of whether auto-update is active. Additionally, the button styling has been updated to ensure consistency across the interface.

internal/api/api.go

@@ -268,25 +268,27 @@ func restartHandler(w http.ResponseWriter, r *http.Request) {
 //
 // No return values are provided since the function writes directly to the response writer.
 func logHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case "GET":
+		logFilePath := app.GetLogFilepath()
 
-	if r.Method == "GET" {
-		data, err := os.ReadFile(app.GetLogFilepath())
+		// Send current state of the log file immediately
+		data, err := os.ReadFile(logFilePath)
 		if err != nil {
-			http.Error(w, "", http.StatusNotFound)
+			http.Error(w, "Error reading log file", http.StatusInternalServerError)
 			return
 		}
 		Response(w, data, "text/plain")
-	} else if r.Method == "DELETE" {
+	case "DELETE":
 		err := os.Truncate(app.GetLogFilepath(), 0)
 		if err != nil {
-			http.Error(w, "", http.StatusServiceUnavailable)
+			http.Error(w, "Error truncating log file", http.StatusServiceUnavailable)
 			return
 		}
-	} else {
-		http.Error(w, "", http.StatusBadRequest)
-		return
+		Response(w, "Log file deleted", "text/plain")
+	default:
+		http.Error(w, "Method not allowed", http.StatusBadRequest)
 	}
-
 }
 
 type Source struct {