# ------------------------------------------------------------------------------
# Version determination function
# This file is part of the init.sh project
# Copyright (c) 2019-2021 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------

# ------------------------------------------------------------------------------
# Return on stdout $distro $version $codename
read_os_release()
{
    if [[ ! -f /etc/os-release ]]; then
        prnt E "Your distribution doesn't have the needed os-release file."
        die 8 --force
    fi

    # Create a sub-shell to avoid polluting the environnement
    (
        # Iniitalise version codename in case the var don't exists
        VERSION_CODENAME="NULL"
        
        # Import the file in the environment
        source /etc/os-release

        if [[ -z $ID || -z $VERSION_ID ]]; then
            prnt E "Your /etc/os-release file mises some vital information."
            die --force 8
        fi
        
        # Return values on standard stdout
        echo ${ID,,} ${VERSION_ID} ${VERSION_CODENAME,,}
        #prnt I "OS is: ${ID,,} ${VERSION_ID} ${VERSION_CODENAME,,}"
    )
}
export read_os_release


# ------------------------------------------------------------------------------
# Create system related variables
# ------------------------------------------------------------------------------
get_os_version()
{
    if [[ $# -ne 3 ]]; then
        prnt E "get_os_version(): incorect number of parameters ($@)."
        die 7 --force
    fi
    
    export SYS_DIST=$1
    export SYS_VER=$2
    if [[ $3 != "null" ]]; then
        export SYS_CODE=$3
    fi
}