Fixed error happening during parallel sessions

modified: ui/static/app.js
modified: ui_app.py

ui/static/app.js

@@ -155,6 +155,14 @@
       }[char]));
     }
 
+    function downloadUrl(path, filename, endpoint) {
+      const params = new URLSearchParams({ path });
+      if (filename) {
+        params.set("filename", filename);
+      }
+      return `${endpoint}?${params.toString()}`;
+    }
+
     function renderCleanProgressRows() {
       cleanProgressPanel.classList.add("active");
       cleanProgressSummary.textContent = `${cleanProgressOrder.length} column${cleanProgressOrder.length === 1 ? "" : "s"}`;
@@ -220,7 +228,7 @@
         <strong>Blueprint applied</strong>
         <div class="status">${changed ? changed[1] : "0"} workbook row value${changed && changed[1] === "1" ? "" : "s"} updated from human overrides.</div>
         <div class="status">${added ? added[1] : "0"} new unique reference value${added && added[1] === "1" ? "" : "s"} added to manual references.</div>
-        <a class="download-link" href="/download-applied-workbook">Download Cleaned Workbook</a>
+        <a class="download-link" href="${downloadUrl(applyWorkbookPath, "", "/download-applied-workbook")}">Download Cleaned Workbook</a>
       `;
     }
 
@@ -412,8 +420,8 @@
           cleanResult.innerHTML = `
             <strong>Blueprint generated</strong>
             <div class="status">Blueprint saved for this session.</div>
-            <a class="download-link" href="/download-blueprint">Download Blueprint</a>
-            <a class="download-link" href="/download-cleaned-workbook">Download Cleaned Workbook</a>
+            <a class="download-link" href="${downloadUrl(generatedBlueprintPath, "Blueprint.xlsx", "/download-blueprint")}">Download Blueprint</a>
+            <a class="download-link" href="${downloadUrl(cleanPath, "", "/download-cleaned-workbook")}">Download Cleaned Workbook</a>
           `;
           runStatus.textContent = "Finished.";
         } else {

ui_app.py

@@ -311,9 +311,10 @@ def sheets_endpoint():
 @app.route("/download-blueprint")
 def download_blueprint():
     state = get_state()
-    if not state["apply_blueprint_path"]:
+    requested_path = request.args.get("path") or state["apply_blueprint_path"]
+    if not requested_path:
         return jsonify({"error": "Blueprint has not been generated yet."}), 404
-    blueprint_path = resolve_allowed_path(state["apply_blueprint_path"], APP_ROOT, ALLOWED_FILE_ROOTS)
+    blueprint_path = resolve_allowed_path(requested_path, APP_ROOT, ALLOWED_FILE_ROOTS)
     if not blueprint_path.exists():
         return jsonify({"error": "Blueprint has not been generated yet."}), 404
     return send_file(blueprint_path, as_attachment=True, download_name="Blueprint.xlsx")
@@ -322,30 +323,34 @@ def download_blueprint():
 @app.route("/download-cleaned-workbook")
 def download_cleaned_workbook():
     state = get_state()
-    if not state["clean_path"]:
+    requested_path = request.args.get("path") or state["clean_path"]
+    if not requested_path:
         return jsonify({"error": "Cleaned workbook is not available."}), 404
-    workbook_path = resolve_allowed_path(state["clean_path"], APP_ROOT, ALLOWED_FILE_ROOTS)
+    workbook_path = resolve_allowed_path(requested_path, APP_ROOT, ALLOWED_FILE_ROOTS)
     if not workbook_path.is_file():
         return jsonify({"error": "Cleaned workbook is not available."}), 404
+    download_name = request.args.get("filename") or state["clean_filename"] or workbook_path.name
     return send_file(
         workbook_path,
         as_attachment=True,
-        download_name=f"cleaned_{state['clean_filename'] or workbook_path.name}",
+        download_name=f"cleaned_{download_name}",
     )
 
 
 @app.route("/download-applied-workbook")
 def download_applied_workbook():
     state = get_state()
-    if not state["apply_workbook_path"]:
+    requested_path = request.args.get("path") or state["apply_workbook_path"]
+    if not requested_path:
         return jsonify({"error": "Applied workbook is not available."}), 404
-    workbook_path = resolve_allowed_path(state["apply_workbook_path"], APP_ROOT, ALLOWED_FILE_ROOTS)
+    workbook_path = resolve_allowed_path(requested_path, APP_ROOT, ALLOWED_FILE_ROOTS)
     if not workbook_path.is_file():
         return jsonify({"error": "Applied workbook is not available."}), 404
+    download_name = request.args.get("filename") or state["apply_workbook_filename"] or workbook_path.name
     return send_file(
         workbook_path,
         as_attachment=True,
-        download_name=f"cleaned_{state['apply_workbook_filename'] or workbook_path.name}",
+        download_name=f"cleaned_{download_name}",
     )