#!/bin/bash

RUNDIR=$(dirname "$0")
pushd "$RUNDIR" >/dev/null
RUNDIR=$(pwd)
popd >/dev/null

function msg() {
    if [ "$2" != "" ]; then
        icon="with icon $2"
    fi

    osascript <<EOT
    tell app "System Events"
      display dialog "$3" buttons {"OK"} default button 1 $icon with title "$1"
      return  -- Suppress result
    end tell
EOT
}

function query() {
    osascript <<EOT
    set T to text returned of (display dialog "$2" buttons {"OK"} default button 1 default answer "$3" with title "$1")
EOT
}

if [ ! -f "$RUNDIR/libWhateverName.dylib" ]; then
    msg "WhateverName" "caution" "libWhateverName.dylib is missing!"
    exit 1
fi

xattr -c "$RUNDIR/libWhateverName.dylib"

GPU_NAME=$(query "WhateverName" "Choose an app or an executable to correct OpenGL/Compute/Metal engine names! Write your own GPU name below if you like:" "Automatic")

APPPATH=$(osascript -e '  
tell application "System Events"  
    set p1 to process 1 whose frontmost is true  
    activate  
    set f to POSIX path of (choose file)  
    set frontmost of p1 to true  
    return f  
end tell  
')

echo "Got $APPPATH"

if [ "$APPPATH" != "" ]; then
    if [ -f "$APPPATH/Contents/Info.plist" ]; then
        APPEXE=$(defaults read "$APPPATH/Contents/Info.plist" CFBundleExecutable)
        echo "Got $APPEXE"

        if [ "$APPEXE" != "" ]; then
            APPPATH="$APPPATH/Contents/MacOS/$APPEXE"
        else
            APPPATH=""
        fi
    elif [ ! -x "$APPPATH" ]; then
        APPPATH=""
    fi
fi

if [ "$APPPATH" == "" ]; then
    msg "WhateverName" "caution" "This is not an app or an executable!"
    exit 1
fi

if [ "$GPU_NAME" == "Automatic" ]; then
  DYLD_INSERT_LIBRARIES="$RUNDIR/libWhateverName.dylib" "$APPPATH"
else
  WE_MODEL_OVERRIDE="$GPU_NAME" DYLD_INSERT_LIBRARIES="$RUNDIR/libWhateverName.dylib" "$APPPATH"
fi

exit 0