fixing

README.md

@@ -16,7 +16,7 @@ short_description: LMS with login and PDF upload
 
 # Dev LMS - Learning Management System
 
-A comprehensive Learning Management System built with Streamlit that provides user authentication and PDF document management capabilities.
+A comprehensive Learning Management System built with Streamlit that provides user authentication and PDF document management capabilities. **Cloud-ready and optimized for Hugging Face Spaces deployment.**
 
 ## 🚀 Features
 
@@ -31,6 +31,7 @@ A comprehensive Learning Management System built with Streamlit that provides us
 - Text extraction from PDF files
 - Document preview and search functionality
 - Document library with user ownership tracking
+- **Cloud-ready storage using session state**
 
 ### 📊 Dashboard
 - User activity metrics
@@ -56,6 +57,7 @@ The system comes with three default user accounts:
 
 ## 🛠️ Installation & Usage
 
+### Local Development
 1. **Install Dependencies:**
    ```bash
    pip install -r requirements.txt
@@ -65,21 +67,28 @@ The system comes with three default user accounts:
    ```bash
    streamlit run src/streamlit_app.py
    ```
+   Or use the convenient startup script:
+   ```bash
+   python run_app.py
+   ```
 
 3. **Access the Application:**
    - Open your browser and go to `http://localhost:8501`
    - Login with one of the default credentials
    - Start uploading and managing PDF documents!
 
+### Cloud Deployment
+The application is optimized for deployment on Hugging Face Spaces and other cloud platforms. No file system permissions required - all data is stored in session state.
+
 ## 📁 Application Structure
 
 ```
 ├── src/
 │   └── streamlit_app.py    # Main application file
-├── data/                   # Data storage (created automatically)
-│   ├── documents/         # Document storage
-│   └── users/             # User configuration
+├── .streamlit/
+│   └── config.toml        # Streamlit configuration
 ├── requirements.txt       # Python dependencies
+├── run_app.py            # Startup script
 └── README.md             # This file
 ```
 
@@ -88,8 +97,9 @@ The system comes with three default user accounts:
 - **Framework:** Streamlit
 - **Authentication:** streamlit-authenticator
 - **PDF Processing:** PyPDF2
-- **Data Storage:** Session state + YAML configuration
+- **Data Storage:** Session state (cloud-ready)
 - **Security:** bcrypt password hashing
+- **Deployment:** Optimized for Hugging Face Spaces
 
 ## 🎯 Use Cases
 
@@ -106,6 +116,13 @@ The system comes with three default user accounts:
 - Document ownership tracking
 - Secure file upload handling
 
+## ☁️ Cloud Features
+
+- **No file system dependencies** - works on read-only environments
+- **Session-based storage** - data persists during user session
+- **Optimized for Hugging Face Spaces** - ready for immediate deployment
+- **Lightweight and fast** - minimal resource requirements
+
 ## 📈 Future Enhancements
 
 - Database integration for persistent storage
@@ -117,4 +134,4 @@ The system comes with three default user accounts:
 
 ---
 
-**Built with ❤️ using Streamlit**
+**Built with ❤️ using Streamlit | Cloud-ready for Hugging Face Spaces**

src/streamlit_app.py

@@ -24,50 +24,39 @@ 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 = {}
-
-# Create data directory if it doesn't exist
-os.makedirs('data', exist_ok=True)
-os.makedirs('data/documents', exist_ok=True)
-os.makedirs('data/users', exist_ok=True)
-
-# User configuration file
-USERS_FILE = 'data/users/users.yaml'
+if 'users_config' not in st.session_state:
+    st.session_state.users_config = None
 
 def create_default_users():
-    """Create default users if the users file doesn't exist"""
-    if not os.path.exists(USERS_FILE):
-        default_users = {
-            'credentials': {
-                'usernames': {
-                    'admin': {
-                        'email': 'admin@example.com',
-                        'name': 'Administrator',
-                        'password': stauth.Hasher(['admin123']).generate()[0]
-                    },
-                    'teacher': {
-                        'email': 'teacher@example.com',
-                        'name': 'Teacher',
-                        'password': stauth.Hasher(['teacher123']).generate()[0]
-                    },
-                    'student': {
-                        'email': 'student@example.com',
-                        'name': 'Student',
-                        'password': stauth.Hasher(['student123']).generate()[0]
-                    }
+    """Create default users configuration"""
+    default_users = {
+        'credentials': {
+            'usernames': {
+                'admin': {
+                    'email': 'admin@example.com',
+                    'name': 'Administrator',
+                    'password': stauth.Hasher(['admin123']).generate()[0]
+                },
+                'teacher': {
+                    'email': 'teacher@example.com',
+                    'name': 'Teacher',
+                    'password': stauth.Hasher(['teacher123']).generate()[0]
+                },
+                'student': {
+                    'email': 'student@example.com',
+                    'name': 'Student',
+                    'password': stauth.Hasher(['student123']).generate()[0]
                 }
             }
         }
-        
-        os.makedirs(os.path.dirname(USERS_FILE), exist_ok=True)
-        with open(USERS_FILE, 'w') as file:
-            yaml.dump(default_users, file, default_flow_style=False)
+    }
+    return default_users
 
 def load_users():
-    """Load users from YAML file"""
-    create_default_users()
-    with open(USERS_FILE) as file:
-        config = yaml.load(file, Loader=SafeLoader)
-    return config
+    """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):
     """Save document information to session state"""