#!/usr/bin/env bash

err_ok=0
err_bad_arg=1
err_bad_run=2

rm_if() {
	if [[ -d $1 ]];
	then
		rm -rf "$1" && echo "removed dir $1"
	elif [[ -f $1 ]]
	then
		rm -f  "$1" && echo "removed file $1"
   fi

   return 0
}
perish() {
	rm_if "${tmpdir}"
	exit "$1"
}
err() {
	echo "error, dropping build"
	rm_if "${appdir}"
	rm_if "${dmg}"
	perish $1
}
:() {
	echo "$@"
	echo
	eval "$@" || err ${err_bad_run}
}

declare -A icon_names=(
	[Tycho]="resources/color/pfhor-hand.png"
)

name=$1
exe=$2

if [[ ! $name ]]
then
	echo "program name needed (available: Tycho)"
	err ${err_bad_arg}
fi

if [[ ! $exe ]]
then
	echo "full path to executable required (ex. '$0 $name ~/bin/maraiah-tycho')"
	err ${err_bad_arg}
fi

app=${name}.app

srcdir=${PWD}/${name,,}
exedir=$(dirname "${exe}")
appdir=${exedir}/${app}

tmpdir=$(mktemp -d)
diskdir=${tmpdir}/disk
icondir=${tmpdir}/${name}.iconset

icon=${srcdir}/${icon_names[${name}]}
dmg=${exedir}/${name}.dmg

: rm_if "${appdir}"

: mkdir -p "${appdir}/Contents/"{Frameworks,MacOS,Resources}

: cp "${exe}" "${appdir}/Contents/MacOS"
: cp "${srcdir}/resources/Info.plist" "${appdir}/Contents"

: mkdir -p "${icondir}"

: sips -z 16   16   "${icon}" --out "${icondir}/icon_16x16.png"
: sips -z 32   32   "${icon}" --out "${icondir}/icon_32x32.png"
: sips -z 64   64   "${icon}" --out "${icondir}/icon_64x64.png"
: sips -z 128  128  "${icon}" --out "${icondir}/icon_128x128.png"
: sips -z 256  256  "${icon}" --out "${icondir}/icon_256x256.png"
: sips -z 512  512  "${icon}" --out "${icondir}/icon_512x512.png"
: sips -z 1024 1024 "${icon}" --out "${icondir}/icon_512x512@2x.png"

: cp "${icondir}/icon_32x32.png"   "${icondir}/icon_16x16@2x.png"
: cp "${icondir}/icon_64x64.png"   "${icondir}/icon_32x32@2x.png"
: cp "${icondir}/icon_256x256.png" "${icondir}/icon_128x128@2x.png"
: cp "${icondir}/icon_512x512.png" "${icondir}/icon_256x256@2x.png"

: iconutil -c icns -o "${appdir}/Contents/Resources/${name}.icns" "${icondir}"

while IFS= read -r lnk
do
	lnk=$(dirname "${lnk}")
	: cp -r "${lnk}" "${appdir}/Contents/Frameworks"
done < "${exedir}"/build/maraiah-tycho-*/out/etc/link.txt

echo "success: bundle written to ${appdir}"

if [[ ! "$NO_DMG" ]]
then
	echo "creating the disk image..."

	: rm_if "${dmg}"

	: mkdir -p "${diskdir}"
	: cp -r "${appdir}" "${diskdir}"
	: cp "${srcdir}/resources/Image.DS_Store" "${diskdir}/.DS_Store"
	: ln -s /Applications "${diskdir}"
	: hdiutil create -volname "${name}" -srcfolder "${diskdir}" "${dmg}"

	echo "success: dmg written to ${dmg}"
fi

perish ${err_ok}

## EOF