pre-launch.sh

#!/bin/bash
usage(){
    echo "Usage: $0 "
    echo "This script needs to be run from the base install directory."
    echo "-h for this dialog."
}

rmathing(){
    x="$(realpath -s "$1")"
    filex="$(file "$x")"
    if ! [[ "$filex" == *" (No such file or directory)" ]]; then #it exist
        if [[ "$filex" == *": directory" ]]; then #it dir. use dir cmd instead.
            echo "Running: rm -r $x"
            rm -r "$x"
        else
            echo "Running: rm $x"
            rm "$x"
        fi
    fi
}

linkathing(){
    x="$(realpath -s "$1")"
    y="$(realpath -s "$2")"
    filex="$(file "$x")"
    if ! [[ "$filex" == *" (No such file or directory)" ]]; then #it exist
        if [[ "$filex" == *": symbolic link to "* ]]; then #it symlink. maybe from past.
            rmathing "$x" #past symlink could point wrong way. so update it anyways.
        fi
        echo "Running: ln -s $x $y"
        ln -s "$x" "$y"
    fi
}

if (( $# >= 0 )); then
    while getopts "h" OPTION; do
        case "${OPTION}" in
            h)
                usage
                exit
                ;;
            \?)
                exit
                ;;
        esac
    done
    shift "$(($OPTIND -1))"

    cd "$(realpath "$(dirname "$0")")"
    if ! [[ "$PWD" == *"Divinity Original Sin 2" ]]; then #we in wrong dir. abort.
        zenity --info --text="Error with $0:\n\nThere was a problem changing to or verifying the install directory.\nEnsure this script is in the Divinity Original Sin 2 directory.\nDiagnosing and fixing the problem is beyond the abilities of this script.\n\nExiting." --width=250
        echo "ERROR: Wrong dir. Aborting."
        exit
    fi

    rmathing ./bin
    linkathing ./DefEd/bin ./bin

    rmathing ./Data
    linkathing ./DefEd/Data ./Data

    rmathing ./bin/SupportTool.exe
    linkathing ./bin/EoCApp.exe ./bin/SupportTool.exe

else
    usage
fi