#!/bin/bash

BINDIR="`dirname "$0"`"
cd "$BINDIR/.."
BASEDIR="`pwd`"

# Debugging with a msg box. Need double quotes around msg for $var expansion
#osascript -e "tell app \"System Events\" to display alert \"bindir is: $BINDIR\" as warning giving up after 10"
 
## But this doesn't work:
# http://stackoverflow.com/questions/23923017/osascript-using-bash-variable-with-a-space
#osascript -e "display notification \"$BINDIR\""
#osascript -e 'display notification "'"$BINDIR"'"'

# extract the JRE into /tmp and use its java to run the GS jar installer
# the /tmp/jre folder will be moved into GS3/packages by the GS3 installer

if [[ -e "$BASEDIR/Resources/Java/jre_bin" ]]; then
     cp "$BASEDIR/Resources/Java/jre_bin" /tmp/. && chmod +x "/tmp/jre_bin" && "/tmp/jre_bin" -o"/tmp" #&& rm "/tmp/jre_bin"

     if [[ -e "/tmp/jre.tar" ]]; then
        rm /tmp/jre_bin
        # get the GS jar installer's name and run it with a dock icon (http://stackoverflow.com/questions/6006173/how-do-you-change-the-dock-icon-of-a-java-program)
        cd "$BASEDIR/Resources/Java/"
        gs_installer=`ls Greenstone-*-MacOS-intel.jar`
        tar -xvf /tmp/jre.tar -C /tmp && rm /tmp/jre.tar && "/tmp/jre/bin/java" -jar -Xdock:icon="$BASEDIR/Resources/icon.icns" "$gs_installer"

        # if after running the installer, the user cancelled installation, then the jre would still be in tmp, remove it to
        if [[ -e "/tmp/jre" ]]; then
           rm -rf /tmp/jre
        fi

     else
       # Issues extracting the jre.tar into /tmp (maybe we couldn't even copy it there) - display error message
       # see: https://developer.apple.com/library/mac/documentation/AppleScript/Conceptual/AppleScriptLangGuide/reference/ASLR_cmds.html#//apple_ref/doc/uid/TP40000983-CH216-SW11
        osascript -e "tell app \"System Events\" to display alert \"Unable to unpack jre into /tmp folder\" as warning giving up after 10"   
       # exit
     fi
fi