Update app.R

app.R

@@ -4,6 +4,7 @@ library(shinythemes)
 library(shinyWidgets)
 library(shinyalert)
 library(spsComps)
+library(data.table)
 library(bslib)
 library(dplyr)
 library(reactable)
@@ -161,7 +162,24 @@ output$down_nodes <- downloadHandler(
     paste("Node",".csv",sep = "")
   },
   content = function(file){
-    write.csv(nodes_df(),file,row.names = F)
+    # Show the progress alert
+      progressSweetAlert(
+        session = session,
+        id = "download_progress",
+        title = "Generating Nodes CSV...",
+        display_pct = TRUE,
+        value = 0
+      )
+      
+      # Simulate progress updates
+      for (i in seq(1, 100, by = 20)) {
+        Sys.sleep(0.5)  # Simulate processing time
+        updateProgressBar(session, id = "download_progress", value = i)
+      }
+    
+    fwrite(nodes_df(),file,row.names = F)
+
+    closeSweetAlert(session)
   }
 )
 
@@ -170,7 +188,24 @@ output$down_edges <- downloadHandler(
     paste("Edge",".csv",sep = "")
   },
   content = function(file){
-    write.csv(edges_df(),file,row.names = F)
+    # Show the progress alert
+      progressSweetAlert(
+        session = session,
+        id = "download_progress",
+        title = "Generating Nodes CSV...",
+        display_pct = TRUE,
+        value = 0
+      )
+      
+      # Simulate progress updates
+      for (i in seq(1, 100, by = 20)) {
+        Sys.sleep(0.5)  # Simulate processing time
+        updateProgressBar(session, id = "download_progress", value = i)
+      }
+    
+    fwrite(edges_df(),file,row.names = F)
+
+    closeSweetAlert(session)
   }
 )