updated fx: build_excel_file to fix traceback error

trial_balance_parser.py

@@ -66,6 +66,9 @@ def parse_trial_balance_pdf(pdf_file):
     - title
     """
 
+    if hasattr(pdf_file, "seek"):
+        pdf_file.seek(0)
+
     transactions = []
     acct_summaries = []
 
@@ -233,20 +236,58 @@ def build_excel_file(df_txn, df_acct, title):
     - bytes suitable for Streamlit download_button
     """
 
-    initial_buffer = io.BytesIO()
+    import io
+    import pandas as pd
+    import openpyxl
 
-    with pd.ExcelWriter(initial_buffer, engine="openpyxl") as writer:
-        df_txn.to_excel(writer, "Transactions", index=False, startrow=2)
-        df_acct.to_excel(writer, "Account Summary", index=False, startrow=2)
+    from openpyxl.styles import Font
+    from openpyxl.worksheet.table import Table, TableStyleInfo
+    from openpyxl.utils import get_column_letter
 
-    initial_buffer.seek(0)
+    txn_columns = [
+        "ACCOUNT_NAME",
+        "ACCOUNT",
+        "JOURNAL",
+        "DATE",
+        "BCH",
+        "ENTRY",
+        "DEBITS",
+        "CREDITS",
+        "DESCRIPTION",
+    ]
 
-    wb = openpyxl.load_workbook(initial_buffer)
+    acct_columns = [
+        "ACCOUNT_NAME",
+        "ACCOUNT",
+        "OPEN",
+        "TOTAL_DEBITS",
+        "TOTAL_CREDITS",
+        "NET_CHANGE",
+        "CLOSE",
+    ]
+
+    if df_txn is None or df_txn.empty:
+        df_txn = pd.DataFrame(columns=txn_columns)
+    else:
+        df_txn = df_txn.reindex(columns=txn_columns)
+
+    if df_acct is None or df_acct.empty:
+        df_acct = pd.DataFrame(columns=acct_columns)
+    else:
+        df_acct = df_acct.reindex(columns=acct_columns)
+
+    output = io.BytesIO()
+
+    with pd.ExcelWriter(output, engine="openpyxl") as writer:
+        df_txn.to_excel(writer, sheet_name="Transactions", index=False, startrow=2)
+        df_acct.to_excel(writer, sheet_name="Account Summary", index=False, startrow=2)
+
+        wb = writer.book
 
         for sheet_name in ["Transactions", "Account Summary"]:
             ws = wb[sheet_name]
 
-        ws["A1"] = title
+            ws["A1"] = title or "MEDITECH Detail Trial Balance"
             ws.merge_cells(
                 start_row=1,
                 start_column=1,
@@ -258,7 +299,8 @@ def build_excel_file(df_txn, df_acct, title):
 
             header_row = 3
 
-        if ws.max_row >= header_row and ws.max_column >= 1:
+            # Only add Excel table if there is at least one data row
+            if ws.max_row > header_row:
                 end_col = get_column_letter(ws.max_column)
                 table_ref = f"A{header_row}:{end_col}{ws.max_row}"
 
@@ -282,19 +324,13 @@ def build_excel_file(df_txn, df_acct, title):
                 col_letter = get_column_letter(col[0].column)
 
                 for cell in col:
-                try:
                     if cell.value:
                         max_length = max(max_length, len(str(cell.value)))
-                except Exception:
-                    pass
 
                 ws.column_dimensions[col_letter].width = min(max_length + 2, 60)
 
-    final_buffer = io.BytesIO()
-    wb.save(final_buffer)
-    final_buffer.seek(0)
-
-    return final_buffer.getvalue()
+    output.seek(0)
+    return output.getvalue()
 
 
 def parse_trial_balance_to_excel(pdf_file):