Update app.py

app.py

@@ -2,7 +2,7 @@ import gradio as gr
 import pandas as pd
 from fpdf import FPDF
 from datetime import datetime
-import tempfile
+import tempfile  # Use for temporary file handling
 import os
 
 # Initialize an empty DataFrame to store all records of invoices (acting as our ledger)
@@ -22,17 +22,16 @@ def add_invoice(head, company_name, sp_station, invoice_no, date, amount):
             "Amount": float(amount)
         }
         ledger = pd.concat([ledger, pd.DataFrame([new_row])], ignore_index=True)
-        
+
         # Filter the ledger for the selected head
         filtered_ledger = ledger[ledger["Head"] == head]
-        
-        # Return filtered ledger and the sum of amounts for this head
+
+        # Calculate the total for the selected head
         total_amount = filtered_ledger["Amount"].sum()
-        
-        # Return only the relevant rows and total to speed up processing
-        return filtered_ledger.to_dict('records'), f"Total for {head}: {total_amount}"
+        return filtered_ledger, f"Total for {head}: {total_amount}"
 
     except Exception as e:
+        print(f"Error during adding invoice: {e}")
         return pd.DataFrame(), "Error during adding invoice"
 
 # Function to search and display all previous records by head
@@ -45,65 +44,71 @@ def search_by_head(head):
         # Calculate the total for the selected head
         total_amount = filtered_ledger["Amount"].sum()
 
-        return filtered_ledger.to_dict('records'), f"Total for {head}: {total_amount}"
+        return filtered_ledger, f"Total for {head}: {total_amount}"
 
     except Exception as e:
+        print(f"Error during search by head: {e}")
         return pd.DataFrame(), "Error during search by head"
 
 # Function to generate a PDF report for a specific head
 def generate_ledger_pdf(head):
     global ledger
     try:
-        # Filter records by head
-        filtered_ledger = ledger[ledger["Head"] == head]
-
-        if filtered_ledger.empty:
-            return None
-
         # Use a temporary directory to save the file
         with tempfile.NamedTemporaryFile(delete=False, suffix=".pdf") as tmp_file:
-            pdf_file_path = tmp_file.name
+            pdf_file_path = tmp_file.name  # Get the temporary file path
 
             # Create a PDF
             pdf = FPDF()
             pdf.add_page()
+            
+            # Title and header
             pdf.set_font("Arial", 'B', 16)
-            pdf.cell(200, 10, txt=f"Ledger Report for {head}", ln=True, align="C")
-            pdf.set_font("Arial", size=12)
+            pdf.cell(0, 10, f"Ledger Report for {head}", ln=True, align="C")
+            pdf.set_font("Arial", 'I', 12)
             current_date = datetime.now().strftime("%d/%m/%Y")
-            pdf.cell(200, 10, txt=f"Report Date: {current_date}", ln=True, align="C")
+            pdf.cell(0, 10, f"Report Date: {current_date}", ln=True, align="C")
             pdf.ln(10)
-
+            
             # Table headers
-            pdf.cell(40, 10, txt="Company Name", border=1, align="C")
-            pdf.cell(40, 10, txt="SP/Station", border=1, align="C")
-            pdf.cell(30, 10, txt="Invoice No", border=1, align="C")
-            pdf.cell(30, 10, txt="Date", border=1, align="C")
-            pdf.cell(50, 10, txt="Amount", border=1, ln=True, align="C")
-
-            # Add table rows
+            pdf.set_font("Arial", 'B', 12)
+            pdf.cell(50, 10, "Company Name", border=1, align="C")
+            pdf.cell(40, 10, "SP/Station", border=1, align="C")
+            pdf.cell(30, 10, "Invoice No", border=1, align="C")
+            pdf.cell(30, 10, "Date", border=1, align="C")
+            pdf.cell(40, 10, "Amount", border=1, ln=True, align="C")
+
+            # Filter records by head
+            filtered_ledger = ledger[ledger["Head"] == head]
+            pdf.set_font("Arial", size=12)
+            
             for _, row in filtered_ledger.iterrows():
-                pdf.cell(40, 10, txt=str(row['Company Name']), border=1, align="C")
-                pdf.cell(40, 10, txt=str(row['SP/Station']), border=1, align="C")
-                pdf.cell(30, 10, txt=str(row['Invoice No']), border=1, align="C")
-                pdf.cell(30, 10, txt=str(row['Date']), border=1, align="C")
-                pdf.cell(50, 10, txt=str(row['Amount']), border=1, ln=True, align="C")
+                pdf.cell(50, 10, str(row['Company Name']), border=1, align="C")
+                pdf.cell(40, 10, str(row['SP/Station']), border=1, align="C")
+                pdf.cell(30, 10, str(row['Invoice No']), border=1, align="C")
+                pdf.cell(30, 10, str(row['Date']), border=1, align="C")
+                pdf.cell(40, 10, f"{row['Amount']:.2f}", border=1, ln=True, align="C")
 
+            # Total amount for the head
             total_amount = filtered_ledger["Amount"].sum()
-            pdf.cell(140, 10, txt="Total Amount", border=1, align="R")
-            pdf.cell(50, 10, txt=str(total_amount), border=1, ln=True, align="C")
+            pdf.ln(10)  # Add some space before the total
+            pdf.set_font("Arial", 'B', 12)
+            pdf.cell(150, 10, "Total Amount", border=1, align="R")
+            pdf.cell(40, 10, f"{total_amount:.2f}", border=1, ln=True, align="C")
 
-            # Save the PDF
+            # Save PDF file
             pdf.output(pdf_file_path)
 
-            # Return the path of the generated PDF
+            # Return the file path for download
             return pdf_file_path
 
     except Exception as e:
+        print(f"Error during PDF generation: {e}")
         return None
 
 # Gradio interface
 with gr.Blocks() as app:
+    # Section for adding new invoices with Head and Company Name fields
     with gr.Row():
         head = gr.Textbox(label="Head")
         company_name = gr.Textbox(label="Company Name")
@@ -112,13 +117,15 @@ with gr.Blocks() as app:
         date = gr.Textbox(label="Date")
         amount = gr.Number(label="Amount")
         add_button = gr.Button("Add Invoice")
-
+    
+    # Section for searching and displaying ledger by head
     with gr.Row():
         search_head = gr.Textbox(label="Search by Head")
         search_button = gr.Button("Search Ledger")
         ledger_records = gr.DataFrame(label="Ledger Records")
         total_display = gr.Textbox(label="Total Amount", interactive=False)
     
+    # Section for generating and displaying PDF link
     with gr.Row():
         generate_pdf_button = gr.Button("Generate PDF")
         pdf_output = gr.File(label="Download PDF")
@@ -126,9 +133,20 @@ with gr.Blocks() as app:
     # Define button functionalities
     add_button.click(add_invoice, [head, company_name, sp_station, invoice_no, date, amount], [ledger_records, total_display])
     
-    search_button.click(search_by_head, [search_head], [ledger_records, total_display])
+    def search_ledger(head):
+        filtered_ledger, total = search_by_head(head)
+        return filtered_ledger, total
+
+    search_button.click(search_ledger, [search_head], [ledger_records, total_display])
+
+    def generate_pdf(head):
+        pdf_path = generate_ledger_pdf(head)
+        if pdf_path:
+            return pdf_path
+        else:
+            return None
 
-    generate_pdf_button.click(generate_ledger_pdf, [search_head], [pdf_output])
+    generate_pdf_button.click(generate_pdf, [search_head], [pdf_output])
 
 # Launch the app
 app.launch(share=True)