#!/bin/bash

if [ $# -lt 1 ] && [ $# -gt 2 ]; then
    echo "usage: make-dmg <path-to-app> [packagename]"
	exit 1
fi

app_path=$1
package_name=$2

if [ ! -e $app_path ]; then
    echo "file $app_path not found..."
    exit 1
fi

readonly OS_VERSION=$(uname -r | awk -F. '{print $1}')
case $OS_VERSION in
"24")
    readonly OS_X_VERSION="15.0"
;;
"23")
    readonly OS_X_VERSION="14.0"
;;
"22")
    readonly OS_X_VERSION="13.0"
;;
"21")
    readonly OS_X_VERSION="12.0"
;;
"20")
    readonly OS_X_VERSION="11.0"
;;
"19")
    readonly OS_X_VERSION="10.15"
;;
"18")
    readonly OS_X_VERSION="10.14"
;;
"17")
    readonly OS_X_VERSION="10.13"
;;
"16")
    readonly OS_X_VERSION="10.12"
        ;;
"15")
    readonly OS_X_VERSION="10.11"
    ;;
"14")
    readonly OS_X_VERSION="10.10"
    ;;
"13")
    readonly OS_X_VERSION="10.9"
    ;;
"10")
    readonly OS_X_VERSION="10.6"
    ;;
"11")
    readonly OS_X_VERSION="10.7"
    ;;
"12")
    readonly OS_X_VERSION="10.8"
    ;;
*)
    echo "ERROR: Unknown OS X version."
    exit -1
    ;;
esac

if [ -n "$package_name" ]; then
    echo "Using package name: $package_name "
else
    echo "No package name provided."
    exit 1
fi

root_path=`dirname $app_path`
name=`basename $app_path`

if [ -e $root_path/CASA ]; then
   echo "cannot create dmg folder $root_path/CASA (it already exists)"
   exit 1
fi

#( cd $root_path/CASA && ln -s /Applications )

if [ -e $package_name ]; then
    echo "output file ($package_name) already exists"
    exit 1
fi

mkdir $root_path/CASA
mv $app_path $root_path/CASA
( cd $root_path/CASA && curl -s -o README.html https://casa.nrao.edu/installMacOS.shtml )

hdiutil create -srcfolder $root_path/CASA -volname $package_name $root_path/c1
hdiutil convert -format UDRW -o $root_path/c2 $root_path/c1.dmg && rm $root_path/c1.dmg
#open c2.dmg
echo
echo "Fix the Finder window of the CASA disk image (icon size and position)"
echo "and then run this command:"
hdiutil convert -format UDBZ -o $package_name $root_path/c2.dmg
#osascript -e 'tell application "Finder" to activate'
rm $root_path/c2.dmg
# Try to detach the volume if it still mounted
echo "Detaching /Volumes/$package_name"
hdiutil detach /Volumes/$package_name || true