autoload -Uz log_debug log_error log_info log_status log_group log_output

local -r _usage="Usage: %B${0}%b <source> <volume name> <output_name>

Create macOS disk image <volume name> <output_name> with contents of <source>"

if (( ! # )) {
  log_error 'Called without arguments.'
  log_output ${_usage}
  return 2
}

local source=${1}
local volume_name=${2}
local output_name=${3}

log_group "Create macOS disk image"

local _hdiutil_flags
if (( _loglevel < 1 )) _hdiutil_flags='-quiet'

trap "hdiutil detach ${_hdiutil_flags} /Volumes/${output_name}; rm temp.dmg; log_group return 2" ERR

hdiutil create ${_hdiutil_flags} \
    -volname "${volume_name}" \
    -srcfolder ${source} \
    -ov \
    -fs APFS \
    -format UDRW \
    temp.dmg
hdiutil attach ${_hdiutil_flags} \
    -noverify \
    -readwrite \
    -mountpoint /Volumes/${output_name} \
    temp.dmg

log_info "Waiting 2 seconds to ensure mounted volume is available..."
sleep 2
log_status "Done"
log_info "Setting up disk volume..."
log_status "Volume icon"
SetFile -c icnC /Volumes/${output_name}/.VolumeIcon.icns
log_status "Icon positions"
osascript package.applescript ${output_name}
log_status "File permissions"
chmod -Rf go-w /Volumes/${output_name}
SetFile -a C /Volumes/${output_name}
rm -rf -- /Volumes/${output_name}/.fseventsd(N)
log_info "Converting disk image..."
hdiutil detach ${_hdiutil_flags} /Volumes/${output_name}
hdiutil convert ${_hdiutil_flags} \
    -format ULMO \
    -ov \
    -o ${output_name}.dmg temp.dmg

rm temp.dmg

trap '' ERR

log_group

return 0