#!/bin/sh

set -u

# This script will do an offline install of python.
# It requires that the variable PYTHON_RPMS_TAR_GZ be set to the path of a
# tar.gz file containing RPMs for python and it's dependencies.

PROFILE_D_PYTHON=/etc/profile.d/python-scl.sh

echo "Installing python from RPMs in $PYTHON_RPMS_TAR_GZ"

# Create a temporary location to extract the RPMs to.
mkdir tmp

# Extract the RPM tar.gz file to a temporary directory.
tar xvzf "$PYTHON_RPMS_TAR_GZ" -C ./tmp

# Perform a localinstall of all the RPMs extracted from PYTHON_RPMS_TAR_GZ.
#
# Ignore the shellshock error about quoting the find, because in this case we
# don't the string to split.
# shellcheck disable=SC2046
yum localinstall --disablerepo=* --nogpgcheck -y $(find ./tmp -name "*.rpm")

# Delete the temporary RPM package.
rm -rf tmp

# Add this to /etc/profile.d so that this python version will get loaded
# automatically when a user logs in.
echo "source /opt/rh/rh-python38/enable" | tee "$PROFILE_D_PYTHON"
chown root:root "$PROFILE_D_PYTHON"
chmod 644 "$PROFILE_D_PYTHON"