#! /usr/bin/env bash

Windows::listLibForManifest () {
	local lib_dir="${1}"

	find "${lib_dir}" \
		-maxdepth 1 \
		-type f \
		-name '*.dll' \
		-exec basename {} \; \
	| xargs -I {} \
		printf '  <file name="{}"/>\n'
}

Windows::printManifest () {
	local lib_dir="${1}"

	cat <<-EOF
	<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
	  <assemblyIdentity type="win32" name="lib" version="1.0.0.0"/>
	$(Windows::listLibForManifest "${lib_dir}")
	</assembly>
	EOF
}

Windows::bundleLibFromFile () {
	local exe_file="${1}"

	exe_file="$(cygpath --unix "${exe_file}")"

	ntldd --recursive "${exe_file}" \
	| egrep -i '\.dll => [A-Z]:\\msys64\\' \
	| sed -e 's/ (0x[0-9a-f]*)$//;s/^.* => //' \
	| cygpath --unix --file - \
	| while read dll_file
	do
		dll_basename="$(basename "${dll_file}")"

		if [ -f "${bundle_dir}/${dll_basename}" ]
		then
			continue
		fi

		cp --preserve=timestamps "${dll_file}" "${lib_dir}/${dll_basename}"

		if [ "${dll_basename}" = 'libgtk-win32-2.0-0.dll' ]
		then
			mingw="$(which 'libgtk-win32-2.0-0.dll' | cut -f2 -d'/')"

			for component_dir in \
				'share/themes/MS-Windows' \
				'share/icons/hicolor' \
				'lib/gdk-pixbuf-2.0' \
				'lib/gtk-2.0'
			do
				if ! [ -d "${bundle_dir}/${component_dir}" ]
				then
					mkdir --parents "${bundle_dir}/$(dirname "${component_dir}")"
					cp -r --preserve=timestamps "/${mingw}/${component_dir}" \
						"${bundle_dir}/${component_dir}"
				fi
			done

			find "${bundle_dir}/lib" -type f -name '*.a' -exec rm {} \;
			find "${bundle_dir}/lib" -type f -name '*.h' -exec rm {} \;
			find "${bundle_dir}/lib" -type d -exec rmdir --ignore-fail-on-non-empty {} \;
		fi
	done
}

system_name="${1}"; shift
bundle_dir="${1}"; shift
exe_file="${1}"; shift

registry_dir="${bundle_dir}/registry"

case "${system_name}" in
	'register')
		mkdir --parents "${registry_dir}"
		printf '%s\n' "${exe_file}" > "${registry_dir}/$(uuidgen)"
		;;
	'windows')
		bundle_dir="$(cygpath --unix "${bundle_dir}")"

		lib_dir="${bundle_dir}/lib"
		mkdir --parents "${lib_dir}"

		if [ -d "${registry_dir}" ]
		then
			for registry_entry in "${registry_dir}"/*
			do
				exe_file="$(cat "${registry_entry}")"

				Windows::bundleLibFromFile "${exe_file}"

				rm "${registry_entry}"
				rmdir --ignore-fail-on-non-empty "${registry_dir}"
			done

			manifest_file="${lib_dir}/lib.manifest"
			Windows::printManifest "${lib_dir}" > "${manifest_file}"
		fi
		;;
	*)
		printf 'ERROR: unsupported system: %s\n' "${system_name}" >&2
		exit 1
		;;
esac