remove login

requirements.txt

@@ -1,7 +1,5 @@
 altair
 pandas
 streamlit
-streamlit-authenticator
 PyPDF2
-python-multipart
-bcrypt
+python-multipart

src/streamlit_app.py

@@ -1,8 +1,4 @@
 import streamlit as st
-import streamlit_authenticator as stauth
-import yaml
-from yaml.loader import SafeLoader
-import os
 import PyPDF2
 import io
 import base64
@@ -18,54 +14,15 @@ st.set_page_config(
 )
 
 # Initialize session state
-if 'authenticated' not in st.session_state:
-    st.session_state.authenticated = False
-if 'username' not in st.session_state:
-    st.session_state.username = None
 if 'uploaded_documents' not in st.session_state:
     st.session_state.uploaded_documents = {}
-if 'users_config' not in st.session_state:
-    st.session_state.users_config = None
+if 'current_user' not in st.session_state:
+    st.session_state.current_user = "User"
 
-def create_default_users():
-    """Create default users configuration"""
-    # Hash passwords using the correct syntax
-    hasher = stauth.Hasher()
-    hashed_passwords = hasher.generate(['admin123', 'teacher123', 'student123'])
-    
-    default_users = {
-        'credentials': {
-            'usernames': {
-                'admin': {
-                    'email': 'admin@example.com',
-                    'name': 'Administrator',
-                    'password': hashed_passwords[0]
-                },
-                'teacher': {
-                    'email': 'teacher@example.com',
-                    'name': 'Teacher',
-                    'password': hashed_passwords[1]
-                },
-                'student': {
-                    'email': 'student@example.com',
-                    'name': 'Student',
-                    'password': hashed_passwords[2]
-                }
-            }
-        }
-    }
-    return default_users
-
-def load_users():
-    """Load users configuration"""
-    if st.session_state.users_config is None:
-        st.session_state.users_config = create_default_users()
-    return st.session_state.users_config
-
-def save_document_info(username, filename, file_content, file_type):
+def save_document_info(filename, file_content, file_type):
     """Save document information to session state"""
-    if username not in st.session_state.uploaded_documents:
-        st.session_state.uploaded_documents[username] = []
+    if 'documents' not in st.session_state.uploaded_documents:
+        st.session_state.uploaded_documents['documents'] = []
     
     document_info = {
         'filename': filename,
@@ -75,7 +32,7 @@ def save_document_info(username, filename, file_content, file_type):
         'content': file_content.decode('latin-1') if isinstance(file_content, bytes) else str(file_content)
     }
     
-    st.session_state.uploaded_documents[username].append(document_info)
+    st.session_state.uploaded_documents['documents'].append(document_info)
 
 def extract_pdf_text(pdf_file):
     """Extract text from PDF file"""
@@ -90,85 +47,28 @@ def extract_pdf_text(pdf_file):
         return ""
 
 def main():
-    # Load users
-    config = load_users()
-    
-    # Create authenticator
-    authenticator = stauth.Authenticate(
-        config['credentials'],
-        'dev_lms',
-        'auth_key',
-        cookie_expiry_days=30
-    )
-    
     # Sidebar for navigation
     with st.sidebar:
         st.title("📚 Dev LMS")
         st.markdown("---")
         
-        if not st.session_state.authenticated:
-            st.info("Please login to access the LMS")
-        else:
-            st.success(f"Welcome, {st.session_state.username}!")
-            st.markdown("---")
-            
-            # Navigation
-            page = st.selectbox(
-                "Navigation",
-                ["Dashboard", "Upload Documents", "My Documents", "Document Library", "Settings"]
-            )
+        # Navigation
+        page = st.selectbox(
+            "Navigation",
+            ["Dashboard", "Upload Documents", "My Documents", "Document Library", "Settings"]
+        )
     
     # Main content area
-    if not st.session_state.authenticated:
-        # Login page
-        st.title("🔐 Login to Dev LMS")
-        st.markdown("---")
-        
-        col1, col2, col3 = st.columns([1, 2, 1])
-        with col2:
-            name, authentication_status, username = authenticator.login('Login', 'main')
-            
-            if authentication_status == False:
-                st.error('Username/password is incorrect')
-            elif authentication_status == None:
-                st.warning('Please enter your username and password')
-            elif authentication_status:
-                st.session_state.authenticated = True
-                st.session_state.username = username
-                st.success(f'Welcome {name}')
-                st.rerun()
-        
-        # Show default credentials
-        with st.expander("Default Login Credentials"):
-            st.markdown("""
-            **Default Users:**
-            - **Admin**: username: `admin`, password: `admin123`
-            - **Teacher**: username: `teacher`, password: `teacher123`
-            - **Student**: username: `student`, password: `student123`
-            """)
-    
-    else:
-        # Authenticated user content
-        if 'page' not in locals():
-            page = "Dashboard"
-        
-        if page == "Dashboard":
-            show_dashboard()
-        elif page == "Upload Documents":
-            show_upload_documents()
-        elif page == "My Documents":
-            show_my_documents()
-        elif page == "Document Library":
-            show_document_library()
-        elif page == "Settings":
-            show_settings()
-        
-        # Logout button
-        st.sidebar.markdown("---")
-        if st.sidebar.button("Logout"):
-            st.session_state.authenticated = False
-            st.session_state.username = None
-            st.rerun()
+    if page == "Dashboard":
+        show_dashboard()
+    elif page == "Upload Documents":
+        show_upload_documents()
+    elif page == "My Documents":
+        show_my_documents()
+    elif page == "Document Library":
+        show_document_library()
+    elif page == "Settings":
+        show_settings()
 
 def show_dashboard():
     """Show the main dashboard"""
@@ -179,23 +79,22 @@ def show_dashboard():
     
     with col1:
         st.metric(
-            label="My Documents",
-            value=len(st.session_state.uploaded_documents.get(st.session_state.username, [])),
+            label="Total Documents",
+            value=len(st.session_state.uploaded_documents.get('documents', [])),
             delta="0"
         )
     
     with col2:
-        total_docs = sum(len(docs) for docs in st.session_state.uploaded_documents.values())
         st.metric(
-            label="Total Documents",
-            value=total_docs,
+            label="System Status",
+            value="Active",
             delta="0"
         )
     
     with col3:
         st.metric(
-            label="Active Users",
-            value=len(st.session_state.uploaded_documents.keys()),
+            label="Storage Used",
+            value="Session",
             delta="0"
         )
     
@@ -203,8 +102,9 @@ def show_dashboard():
     
     # Recent activity
     st.subheader("📈 Recent Activity")
-    if st.session_state.uploaded_documents.get(st.session_state.username):
-        recent_docs = st.session_state.uploaded_documents[st.session_state.username][-5:]
+    documents = st.session_state.uploaded_documents.get('documents', [])
+    if documents:
+        recent_docs = documents[-5:]
         for doc in recent_docs:
             with st.container():
                 col1, col2, col3 = st.columns([3, 2, 1])
@@ -215,6 +115,8 @@ def show_dashboard():
                 with col3:
                     st.write(f"{doc['file_type']}")
                 st.markdown("---")
+    else:
+        st.info("No documents uploaded yet. Start by uploading a PDF document!")
 
 def show_upload_documents():
     """Show document upload interface"""
@@ -251,7 +153,6 @@ def show_upload_documents():
         if st.button("Upload Document"):
             # Save document info
             save_document_info(
-                st.session_state.username,
                 uploaded_file.name,
                 uploaded_file.read(),
                 "PDF"
@@ -261,13 +162,13 @@ def show_upload_documents():
             st.balloons()
 
 def show_my_documents():
-    """Show user's uploaded documents"""
+    """Show uploaded documents"""
     st.title("📁 My Documents")
     st.markdown("---")
     
-    user_docs = st.session_state.uploaded_documents.get(st.session_state.username, [])
+    documents = st.session_state.uploaded_documents.get('documents', [])
     
-    if not user_docs:
+    if not documents:
         st.info("You haven't uploaded any documents yet.")
         return
     
@@ -275,10 +176,10 @@ def show_my_documents():
     search_term = st.text_input("🔍 Search documents", placeholder="Enter filename or content...")
     
     # Filter documents based on search
-    filtered_docs = user_docs
+    filtered_docs = documents
     if search_term:
         filtered_docs = [
-            doc for doc in user_docs
+            doc for doc in documents
             if search_term.lower() in doc['filename'].lower() or
                search_term.lower() in doc.get('content', '').lower()
         ]
@@ -318,29 +219,22 @@ def show_document_library():
     st.title("📚 Document Library")
     st.markdown("---")
     
-    if not st.session_state.uploaded_documents:
+    documents = st.session_state.uploaded_documents.get('documents', [])
+    
+    if not documents:
         st.info("No documents have been uploaded to the system yet.")
         return
     
     # Search functionality
-    search_term = st.text_input("🔍 Search all documents", placeholder="Enter filename, content, or username...")
-    
-    # Collect all documents
-    all_docs = []
-    for username, docs in st.session_state.uploaded_documents.items():
-        for doc in docs:
-            doc_copy = doc.copy()
-            doc_copy['owner'] = username
-            all_docs.append(doc_copy)
+    search_term = st.text_input("🔍 Search all documents", placeholder="Enter filename or content...")
     
     # Filter documents based on search
-    filtered_docs = all_docs
+    filtered_docs = documents
     if search_term:
         filtered_docs = [
-            doc for doc in all_docs
+            doc for doc in documents
             if search_term.lower() in doc['filename'].lower() or
-               search_term.lower() in doc.get('content', '').lower() or
-               search_term.lower() in doc['owner'].lower()
+               search_term.lower() in doc.get('content', '').lower()
         ]
     
     if not filtered_docs:
@@ -350,7 +244,7 @@ def show_document_library():
     # Display documents
     for i, doc in enumerate(filtered_docs):
         with st.container():
-            col1, col2, col3, col4, col5 = st.columns([3, 2, 1, 1, 1])
+            col1, col2, col3, col4 = st.columns([3, 2, 1, 1])
             
             with col1:
                 st.write(f"**{doc['filename']}**")
@@ -362,12 +256,8 @@ def show_document_library():
                 st.write(f"{doc['file_type']}")
             
             with col4:
-                st.write(f"By: {doc['owner']}")
-            
-            with col5:
                 if st.button(f"View {i}", key=f"lib_view_{i}"):
                     st.subheader(f"📄 {doc['filename']}")
-                    st.write(f"**Uploaded by:** {doc['owner']}")
                     st.write(f"**Uploaded:** {doc['upload_time']}")
                     st.write(f"**Size:** {doc['size']} bytes")
                     
@@ -382,41 +272,45 @@ def show_settings():
     st.title("⚙️ Settings")
     st.markdown("---")
     
-    st.subheader("👤 User Information")
-    st.write(f"**Username:** {st.session_state.username}")
-    st.write(f"**Session ID:** {id(st.session_state)}")
-    
-    st.markdown("---")
-    
     st.subheader("🔧 System Information")
     st.write("**Version:** Dev LMS v1.0")
     st.write("**Features:**")
-    st.write("- User authentication")
     st.write("- PDF document upload")
     st.write("- Document search and preview")
     st.write("- Document library")
+    st.write("- Session-based storage")
     
     st.markdown("---")
     
     # Export data option
-    if st.button("📥 Export My Data"):
-        user_docs = st.session_state.uploaded_documents.get(st.session_state.username, [])
-        if user_docs:
+    if st.button("📥 Export All Data"):
+        documents = st.session_state.uploaded_documents.get('documents', [])
+        if documents:
             # Create JSON export
             export_data = {
-                'username': st.session_state.username,
                 'export_date': datetime.now().isoformat(),
-                'documents': user_docs
+                'documents': documents
             }
             
             st.download_button(
                 label="Download JSON Export",
                 data=json.dumps(export_data, indent=2),
-                file_name=f"{st.session_state.username}_data_export.json",
+                file_name=f"lms_data_export.json",
                 mime="application/json"
             )
         else:
             st.info("No data to export.")
+    
+    st.markdown("---")
+    
+    # Clear data option
+    if st.button("🗑️ Clear All Data"):
+        if st.session_state.uploaded_documents.get('documents'):
+            st.session_state.uploaded_documents['documents'] = []
+            st.success("All documents have been cleared!")
+            st.rerun()
+        else:
+            st.info("No documents to clear.")
 
 if __name__ == "__main__":
     main()