Update app.py

app.py

@@ -43,6 +43,7 @@ with col2:
         value=(25, 75)
         )
 
+summ_text = None
 
 if uploaded_file is not None:
     
@@ -80,127 +81,126 @@ if uploaded_file is not None:
             st.write(summ)
 
 
-with open('slides_text.pkl', 'rb') as file:
-    summ_text = pickle.load(file)
-
-# Function to render HTML content
-def format(text_list):
-    format_list = []
-    for text in text_list:
-        # Split text by periods
-        sentences = text.split('.')
-        # Create HTML list items
-        list_items = "".join([f"- {sentence.strip()}.\n" for sentence in sentences if sentence.strip()])
-        format_list.append(list_items)
-    return format_list
-
-# Initialize session state for page index and text
-if 'page_index' not in st.session_state:
-    st.session_state.page_index = 0
-
-if 'summ_text' not in st.session_state:
-    st.session_state.summ_text = format(summ_text)
-
-if 'current_text' not in st.session_state:
-    st.session_state.current_text = st.session_state.summ_text[st.session_state.page_index]
-
-
-
-# Function to handle page turn
-def turn_page(direction):
-    if direction == "next" and st.session_state.page_index < len(summ_text) - 1:
-        st.session_state.page_index += 1
-    elif direction == "prev" and st.session_state.page_index > 0:
-        st.session_state.page_index -= 1
-    st.session_state.current_text = st.session_state.summ_text[st.session_state.page_index]
-
-# Function to update the current text based on text_area changes
-def update_text():
-    st.session_state.summ_text[st.session_state.page_index] = st.session_state.text_area_value
-    st.session_state.current_text = st.session_state.text_area_value
-
-
-# Display editable text box
-text = st.text_area("Edit Text", st.session_state.current_text, height=200, key="text_area_value", on_change=update_text)
-
-# Display page turner controls
-col1, col2, col3 = st.columns([2.25, 12, 1.7])
-
-# Previous button in col1
-with col1:
-    st.button("Previous", on_click=turn_page, args=("prev",))
-
-# Center aligned text in col2
-with col2:
-    st.markdown(
-        f'<div style="display: flex; justify-content: center; align-items: center; height: 100%;">'
-        f'Page {st.session_state.page_index + 1} of {len(summ_text)}'
-        f'</div>',
-        unsafe_allow_html=True
+if summ_text is not None:
+    
+    # Function to render HTML content
+    def format(text_list):
+        format_list = []
+        for text in text_list:
+            # Split text by periods
+            sentences = text.split('.')
+            # Create HTML list items
+            list_items = "".join([f"- {sentence.strip()}.\n" for sentence in sentences if sentence.strip()])
+            format_list.append(list_items)
+        return format_list
+    
+    # Initialize session state for page index and text
+    if 'page_index' not in st.session_state:
+        st.session_state.page_index = 0
+    
+    if 'summ_text' not in st.session_state:
+        st.session_state.summ_text = format(summ_text)
+    
+    if 'current_text' not in st.session_state:
+        st.session_state.current_text = st.session_state.summ_text[st.session_state.page_index]
+    
+    
+    
+    # Function to handle page turn
+    def turn_page(direction):
+        if direction == "next" and st.session_state.page_index < len(summ_text) - 1:
+            st.session_state.page_index += 1
+        elif direction == "prev" and st.session_state.page_index > 0:
+            st.session_state.page_index -= 1
+        st.session_state.current_text = st.session_state.summ_text[st.session_state.page_index]
+    
+    # Function to update the current text based on text_area changes
+    def update_text():
+        st.session_state.summ_text[st.session_state.page_index] = st.session_state.text_area_value
+        st.session_state.current_text = st.session_state.text_area_value
+    
+    
+    # Display editable text box
+    text = st.text_area("Edit Text", st.session_state.current_text, height=200, key="text_area_value", on_change=update_text)
+    
+    # Display page turner controls
+    col1, col2, col3 = st.columns([2.25, 12, 1.7])
+    
+    # Previous button in col1
+    with col1:
+        st.button("Previous", on_click=turn_page, args=("prev",))
+    
+    # Center aligned text in col2
+    with col2:
+        st.markdown(
+            f'<div style="display: flex; justify-content: center; align-items: center; height: 100%;">'
+            f'Page {st.session_state.page_index + 1} of {len(summ_text)}'
+            f'</div>',
+            unsafe_allow_html=True
+        )
+    
+    # Next button in col3, right aligned
+    with col3:
+        st.button("Next", on_click=turn_page, args=("next",))
+    
+    # Display HTML box
+    st.markdown(st.session_state.current_text)
+    
+    def render_markdown_to_html(markdown_str):
+        return markdown.markdown(markdown_str)
+    
+    def create_pdf_from_markdown_strings(markdown_strings):
+        html_pages = [render_markdown_to_html(md) for md in markdown_strings]
+    
+        # Combine HTML content with page breaks and add a style section for font size and margins
+        combined_html = '''
+        <html>
+        <head>
+            <style>
+                .page { 
+                    font-size: 16pt; /* Adjust the font size as needed */
+                }
+            </style>
+        </head>
+        <body>
+        '''
+        for i, page in enumerate(html_pages):
+            combined_html += f'<div class="page">{page}</div>'
+            if i < len(html_pages) - 1:  # Only add page break after if it's not the last page
+                combined_html += '<div style="page-break-after: always;"></div>'
+        combined_html += '</body></html>'
+    
+        # PDF options: landscape orientation and page size
+        options = {
+            'page-size': 'A4',
+            'orientation': 'Landscape'
+        }
+    
+        return combined_html
+    
+    def generate_pdf(html_string):
+        css = """
+        @page {
+            size: A4 landscape;
+            margin: 20mm;
+        }
+        body {
+            font-family: sans-serif;
+        }
+        """
+        pdf = BytesIO()
+        HTML(string=html_string).write_pdf(pdf, stylesheets=[CSS(string=css)])
+        pdf.seek(0)
+        return pdf
+    
+    html_content = create_pdf_from_markdown_strings(st.session_state.summ_text)
+    pdf_file = generate_pdf(html_content)
+        
+    # Provide download link
+    st.download_button(
+        label="Download PDF",
+        data=pdf_file,
+        file_name="slides.pdf",
+        mime="application/pdf"
     )
 
-# Next button in col3, right aligned
-with col3:
-    st.button("Next", on_click=turn_page, args=("next",))
-
-# Display HTML box
-st.markdown(st.session_state.current_text)
-
-def render_markdown_to_html(markdown_str):
-    return markdown.markdown(markdown_str)
-
-def create_pdf_from_markdown_strings(markdown_strings):
-    html_pages = [render_markdown_to_html(md) for md in markdown_strings]
-
-    # Combine HTML content with page breaks and add a style section for font size and margins
-    combined_html = '''
-    <html>
-    <head>
-        <style>
-            .page { 
-                font-size: 16pt; /* Adjust the font size as needed */
-            }
-        </style>
-    </head>
-    <body>
-    '''
-    for i, page in enumerate(html_pages):
-        combined_html += f'<div class="page">{page}</div>'
-        if i < len(html_pages) - 1:  # Only add page break after if it's not the last page
-            combined_html += '<div style="page-break-after: always;"></div>'
-    combined_html += '</body></html>'
-
-    # PDF options: landscape orientation and page size
-    options = {
-        'page-size': 'A4',
-        'orientation': 'Landscape'
-    }
-
-    return combined_html
-
-def generate_pdf(html_string):
-    css = """
-    @page {
-        size: A4 landscape;
-        margin: 20mm;
-    }
-    body {
-        font-family: sans-serif;
-    }
-    """
-    pdf = BytesIO()
-    HTML(string=html_string).write_pdf(pdf, stylesheets=[CSS(string=css)])
-    pdf.seek(0)
-    return pdf
-
-html_content = create_pdf_from_markdown_strings(st.session_state.summ_text)
-pdf_file = generate_pdf(html_content)
-    
-# Provide download link
-st.download_button(
-    label="Download PDF",
-    data=pdf_file,
-    file_name="slides.pdf",
-    mime="application/pdf"
-)
-