Update app.R

app.R

@@ -498,37 +498,46 @@ server <- function(input, output, session) {
   })
   
   # Processing summary
-  output$process_summary <- renderText({
-    if (is.null(input$file)) {
-      return("No file uploaded yet.")
-    }
-    
-    if (is.null(processed_data())) {
-      return("Processing...")
+output$process_summary <- renderText({
+  if (is.null(input$file)) {
+    return("No file uploaded yet.")
+  }
+  
+  if (is.null(processed_data())) {
+    return("Processing...")
+  }
+  
+  df <- processed_data()
+  original_df <- read.csv(input$file$datapath, nrows = 1)
+  selected_cols_to_remove <- input$columns_to_remove %||% character(0)
+  removed_cols <- intersect(selected_cols_to_remove, names(original_df))
+  
+  # Build the removed columns text
+  removed_cols_text <- if (length(removed_cols) > 0) {
+    cols_display <- if (length(removed_cols) > 5) {
+      paste(paste(head(removed_cols, 5), collapse = ", "), "...")
+    } else {
+      paste(removed_cols, collapse = ", ")
     }
-    
-    df <- processed_data()
-    original_df <- read.csv(input$file$datapath, nrows = 1)
-    selected_cols_to_remove <- input$columns_to_remove %||% character(0)
-    removed_cols <- intersect(selected_cols_to_remove, names(original_df))
-    
-    summary_text <- paste(
-      "✓ File processed successfully!",
-      paste("✓ Original columns:", ncol(original_df)),
-      paste("✓ Final columns:", ncol(df)),
-      paste("✓ Target columns: 167"),
-      paste("✓ Rows processed:", nrow(df)),
-      paste("✓ Removed columns:", length(removed_cols)),
-      if (length(removed_cols) > 0) paste("  -", paste(head(removed_cols, 5), collapse = ", "), 
-                                          if (length(removed_cols) > 5) "..." else ""),
-      "✓ Duplicates removed",
-      paste("✓ Ready for further processing"),
-      sep = "\n"
-    )
-    
-    return(summary_text)
-  })
+    paste("✓ Removed columns:", length(removed_cols), "\n  -", cols_display)
+  } else {
+    "✓ Removed columns: 0"
+  }
   
+  summary_text <- paste(
+    "✓ File processed successfully!",
+    paste("✓ Original columns:", ncol(original_df)),
+    paste("✓ Final columns:", ncol(df)),
+    paste("✓ Target columns: 167"),
+    paste("✓ Rows processed:", nrow(df)),
+    removed_cols_text,
+    "✓ Duplicates removed",
+    paste("✓ Ready for further processing"),
+    sep = "\n"
+  )
+  
+  return(summary_text)
+})
   # Preview table
   output$preview <- DT::renderDataTable({
     req(processed_data())