#!/bin/sh
# Build the macOS disk image: an application bundle beside a symlink to
# /Applications, which is what a user expects to drag.
#   build-dmg.sh <version> <arch> <appid> <output.dmg>
set -eu

version=$1
arch=$2
appid=$3
out=$4

if [ "$(uname -s)" != Darwin ]; then
	echo "build-dmg.sh: a DMG can only be built on macOS (hdiutil is required)" >&2
	echo "the binary itself cross-compiles: make build/darwin-$arch/keeporg" >&2
	exit 1
fi

root=$(cd "$(dirname "$0")/.." && pwd)
stage=$root/build/dmg-$arch
app=$stage/KeepOrg.app
rm -rf "$stage"
mkdir -p "$app/Contents/MacOS" "$app/Contents/Resources"

# The bundle runs the client itself: started with no command it is the
# menu-bar application, and the same binary serves `keeporg` in a terminal.
install -m 0755 "$root/build/darwin-$arch/keeporg" "$app/Contents/MacOS/keeporg"
sed -e "s/@VERSION@/$version/" -e "s/@APPID@/$appid/" \
	"$root/packaging/macos/Info.plist.in" > "$app/Contents/Info.plist"
iconutil -c icns -o "$app/Contents/Resources/KeepOrg.icns" "$root/build/icons/KeepOrg.iconset"
cp "$root/docs/HANDOVER.md" "$stage/Read me first.md" 2>/dev/null || true

# The symlink every macOS DMG carries, so installing is one drag.
ln -s /Applications "$stage/Applications"

mkdir -p "$(dirname "$out")"
rm -f "$out"
hdiutil create -volname "KeepOrg $version" -srcfolder "$stage" \
	-ov -fs HFS+ -format UDZO "$out" >/dev/null
printf 'built %s\n' "$out"