installer_prep.sh

#!/bin/bash
#
# Acts as a transition script from linuxAIO revision 2 to 4. During these changes, many
# of the files were renamed and had their file extension ('.sh') removed.
#
########################################################################################
#### [ Variables ]


## Modify output text color.
yellow="$(printf '\033[1;33m')"
cyan="$(printf '\033[0;36m')"
red="$(printf '\033[1;31m')"
nc="$(printf '\033[0m')"

### Identify distro and distro version.
if [[ -f /etc/os-release ]]; then
    # shellcheck disable=SC1091
    . /etc/os-release
    distro="$ID"
    ver="$VERSION_ID"  # Version: x.x.x...
    sver=${ver//.*/}   # Version: x
else
    distro=$(uname -s)
    ver=$(uname -r)
fi

## Identify bit and architecture type.
case $(uname -m) in
    x86_64) bits="64"; _ARCH="x64" ;;
    i*86)   bits="32"; _ARCH="x86" ;;
    armv*)  bits="32"; _ARCH="?" ;;
    *)      bits="?";  _ARCH="?" ;;
esac


#### End of [ Variables ]
########################################################################################
#### [ Functions ]


########
# Ensure that .NET is set up to work with 'packages.microsoft.com'. For more
# information, please visit https://github.com/dotnet/core/issues/7699.
#
# Arguments:
#   None
########
custom_dotnet() {
    if (hash dotnet &>/dev/null && [[ ! $(dotnet --version) ]]) &>/dev/null; then
        echo "${yellow}While the .NET runtime is installed, the .NET SDK is not${nc}"
        echo "Uninstalling existing .NET Core 6.0 installation..."
        sudo apt remove dotnet-sdk-6.0 -y
        sudo apt autoremove -y
    fi

    if [[ ! -f /etc/apt/preferences.d/custom-dotnet.pref ]]; then
        echo "Upating prefered .NET Core install method..."

        {
            echo -e "Explanation: https://github.com/dotnet/core/issues/7699" \
                "\nPackage: *" \
                "\nPin: origin \"packages.microsoft.com\"" \
                "\nPin-Priority: 1001" | sudo tee /etc/apt/preferences.d/custom-dotnet.pref
        } || {
            echo "${red}Failed to create" \
                "'/etc/apt/preferences.d/custom-dotnet.pref'${nc}" >&2
            exit 1
        }
    fi
}

#### End of [ Functions ]
########################################################################################
#### [ Main ]


echo -n "${cyan}There has been some changes that require special intervention. When" \
    "the installer has exited, re-execute the installer, and re-run MewdekoBot in" \
    "your chosen run mode. "
read -rp "Press [Enter] to continue.${nc}"

########################################################################################
#### [[ Set .NET Preferences ]]


if [[ $bits = 64 ]]; then
    if [[ $distro = "ubuntu" ]]; then
        case "$ver" in
            22.04) custom_dotnet ;;
        esac
    elif [[ $distro = "linuxmint" ]]; then
        case "$sver" in
            21) custom_dotnet ;;
        esac
    fi
fi


#### End of [[ Set .NET Preferences ]]
########################################################################################
#### [[ Update Files ]]


if   [[ -f linuxAIO.sh ]]; then
    echo "Backing up 'linuxAIO.sh' as 'linuxAIO.sh.old'..."
    mv linuxAIO.sh linuxAIO.sh.old
elif [[ -f linuxAIO ]]; then
    echo "Backing up 'linuxAIO' as 'linuxAIO.old'..."
    mv linuxAIO linuxAIO.old
fi

echo "Downloading latest version of 'linuxAIO'..."
curl -O "$_RAW_URL"/linuxAIO && sudo chmod +x linuxAIO
echo "${cyan}NOT applying existing configurations to the new 'linuxAIO'${nc}"

echo "Cleaning up..."
[[ -f MewdekoRun.sh ]]     && mv MewdekoRun.sh MewdekoRun
[[ -f installer-prep ]]    && rm installer-prep
[[ -f installer_prep.sh ]] && rm installer_prep.sh
echo "Exiting..."


#### End of [[ Update Files ]]
########################################################################################

#### End of [ Main ]
########################################################################################