#!/bin/sh
# Install Python dependencies needed by setup_cell.py
set -e

echo "Checking system dependencies..."

# Ensure python3 is available
if ! command -v python3 >/dev/null 2>&1; then
    echo "Installing python3..."
    sudo apt-get install -y python3 || { echo "ERROR: python3 not found and could not install it."; exit 1; }
fi

# Check if cryptography is already importable
if python3 -c "import cryptography" 2>/dev/null; then
    echo "Dependencies OK."
    exit 0
fi

echo "Installing python3-cryptography..."

# 1. Try apt (works if sudo is passwordless or interactive TTY is available)
if sudo -n apt-get install -y python3-cryptography 2>/dev/null; then
    echo "Dependencies OK."
    exit 0
fi

# 2. Try pip (module form, covers both pip3 and python3 -m pip)
if python3 -m pip install --user cryptography 2>/dev/null; then
    echo "Dependencies OK."
    exit 0
fi

# 3. Bootstrap pip via get-pip.py, then install
if command -v curl >/dev/null 2>&1; then
    curl -sSL https://bootstrap.pypa.io/get-pip.py -o /tmp/get-pip.py 2>/dev/null \
        && python3 /tmp/get-pip.py --user -q 2>/dev/null \
        && python3 -m pip install --user cryptography 2>/dev/null \
        && { echo "Dependencies OK."; exit 0; }
fi

# 4. No automated path worked — ask the user to install manually
echo ""
echo "ERROR: Could not install python3-cryptography automatically."
echo "Please run the following command and then retry:"
echo ""
echo "  sudo apt-get install -y python3-cryptography"
echo ""
exit 1