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#!/bin/bash
JUPYTER_TOKEN="${JUPYTER_TOKEN:=huggingface}"

# Define directories
NOTEBOOK_DIR="/data"
ORIGINAL_NOTEBOOKS="/notebooks"
BACKUP_DIR="/home/user/original_notebooks"

# Create backup directory if it doesn't exist
if [ ! -d "$BACKUP_DIR" ]; then
    echo "Creating backup directory for original notebooks..."
    mkdir -p "$BACKUP_DIR"
    # Copy all original notebooks to the backup directory
    cp -r "$ORIGINAL_NOTEBOOKS"/*.ipynb "$BACKUP_DIR"
fi

# Clear the notebook directory and copy fresh notebooks for this session
echo "Preparing fresh notebooks for this session..."
mkdir -p "$NOTEBOOK_DIR"
rm -rf "$NOTEBOOK_DIR"/*.ipynb
cp "$BACKUP_DIR"/*.ipynb "$NOTEBOOK_DIR"

# Set proper permissions
chmod -R 755 "$NOTEBOOK_DIR"

# Start JupyterLab
echo "Starting JupyterLab..."
jupyter labextension disable "@jupyterlab/apputils-extension:announcements"

jupyter-lab \
    --ip 0.0.0.0 \
    --port 7860 \
    --no-browser \
    --allow-root \
    --ServerApp.token="$JUPYTER_TOKEN" \
    --ServerApp.tornado_settings="{'headers': {'Content-Security-Policy': 'frame-ancestors *'}}" \
    --ServerApp.cookie_options="{'SameSite': 'None', 'Secure': True}" \
    --ServerApp.disable_check_xsrf=True \
    --LabApp.news_url=None \
    --LabApp.check_for_updates_class="jupyterlab.NeverCheckForUpdate" \
    --notebook-dir=$NOTEBOOK_DIR