#!/usr/bin/env bash

set -euo pipefail

if [[ $# -ne 2 ]]
then
    echo "用法：$0 <Commilitia Drop.app> <Commilitia Drop.dmg>" >&2
    exit 2
fi

appPath="$1"
outputPath="$2"

if [[ ! -d "$appPath" ]]
then
    echo "找不到应用：$appPath" >&2
    exit 1
fi

stagingDirectory="$(mktemp -d /tmp/commilitia-drop-dmg.XXXXXX)"
trap 'rm -rf "$stagingDirectory"' EXIT

ditto "$appPath" "$stagingDirectory/Commilitia Drop.app"
ln -s /Applications "$stagingDirectory/Applications"
mkdir -p "$(dirname "$outputPath")"
rm -f "$outputPath"

hdiutil create \
    -volname "Commilitia Drop" \
    -srcfolder "$stagingDirectory" \
    -ov \
    -format UDZO \
    "$outputPath"