#!/usr/bin/env bash
# Update the R binaries and RStudio-R4 application meny entry
# $1: Version number ex. '2021.09.1-372'
# Copyright 2021 Bryan C. Roessler

parent="${BASH_SOURCE[0]}"
parent=${parent%/*}

[[ -f "$parent"/functions ]] && . "$parent"/functions || exit 1

is_root

if [[ $# -ne 1 ]]; then
    echo "Missing R version argument."
    echo "Example: '2021.09.1-372'"
    exit 1
fi

ask_ok "RStudio-R4 to version $1?" || exit $?

sudo dnf install -y "https://cdn.rstudio.com/r/centos-7/pkgs/R-${1}-1-1.x86_64.rpm" \
                    "https://download2.rstudio.org/server/centos7/x86_64/rstudio-server-rhel-${1}-x86_64.rpm"




desktop_file="/usr/share/applications/rstudio-R4.desktop"

[[ ! -f "$desktop_file" ]] && exit 1

sed -i "s|/opt/R/.*/bin/R|/opt/R/$1/bin/R|" "$desktop_file"

exit $?