#!/bin/sh

set -e

PREREQ=""

prereqs()
{
	echo "${PREREQ}"
}

case "${1}" in
	prereqs)
		prereqs
		exit 0
		;;
esac

. /usr/share/initramfs-tools/hook-functions

THEME="$(/usr/sbin/plymouth-set-default-theme || true)"
THEMES="/usr/share/plymouth/themes"

if [ -n "${THEME}" ]
then
	THEME_NAME="${THEME}"
	THEME="${THEMES}/${THEME}/${THEME}.plymouth"
	IMAGE_DIR=$(grep "ImageDir *= *" ${THEME} | sed 's/ImageDir *= *//')
else
	exit 0
fi

PLUGIN_PATH="$(plymouth --get-splash-plugin-path)"

case "${THEME_NAME}" in
	text|details|tribar)
		PLUGINS="text.so details.so"
		;;

	*)
		PLUGINS="text.so details.so label-pango.so"
		;;
esac

MODULE="${PLUGIN_PATH}/$(sed -n 's/^ModuleName=\(.*\)/\1/p' ${THEME}).so"

if [ ! -e "$MODULE" ]
then
	echo "W: plymouth module ($MODULE) missing, skipping plymouth."
	exit 0
fi

# copy plugin and images for current theme
copy_exec "${MODULE}"
mkdir -p "${DESTDIR}/${THEMES}"
cp -r --dereference "${THEMES}/${THEME_NAME}" "${DESTDIR}/${THEMES}"

if [ -n "${IMAGE_DIR}" ] && [ "${THEMES}/${THEME_NAME}" != "${IMAGE_DIR}" ]
then
	cp -r --dereference "${IMAGE_DIR}" "${DESTDIR}/${THEMES}"
fi

# copy binaries and base plugins
copy_exec /usr/bin/plymouth
copy_exec /usr/sbin/plymouthd
copy_exec /usr/libexec/plymouth/plymouthd-fd-escrow

for PLUGIN in ${PLUGINS}
do
	if [ -f ${PLUGIN_PATH}/${PLUGIN} ]
	then
		copy_exec ${PLUGIN_PATH}/${PLUGIN}
	else
		echo "W: plymouth: The plugin ${PLUGIN} is missing, the selected theme might not work as expected."
		echo "W: plymouth: You might want to install the plymouth-themes package to fix this."
	fi
done

# copy base themes and logo
cp -dRp "${THEMES}/details" "${DESTDIR}/${THEMES}"
cp -dRp "${THEMES}/text" "${DESTDIR}/${THEMES}"

if [ -f /etc/os-release ]
then
	mkdir -p "${DESTDIR}/etc"
	cp /etc/os-release "${DESTDIR}/etc"
fi

case "${THEME_NAME}" in
	text|details)

		;;

	*)
		cp /usr/share/plymouth/debian-logo.png "${DESTDIR}/usr/share/plymouth"

		# fontconfig
		mkdir -p "${DESTDIR}/etc/fonts/conf.d"
		cp -dRp /etc/fonts/fonts.conf "${DESTDIR}/etc/fonts"
		cp -rL /etc/fonts/conf.d/60-latin.conf "${DESTDIR}/etc/fonts/conf.d"
		mkdir -p "${DESTDIR}/var/cache/fontconfig"
		# This is only needed because fc-cache bellow fails if the directory doesn't exist
		mkdir -p "${DESTDIR}/usr/local/share/fonts"

		# Fallback fonts
		mkdir -p ${DESTDIR}/usr/share/fonts
		DEFAULT_FONT=$(fc-match -f %{file} 2> /dev/null)
		[ ! -z "$DEFAULT_FONT" -a ! -f "${DESTDIR}${DEFAULT_FONT}" ] && copy_file font "$DEFAULT_FONT"
		DEFAULT_MONOSPACE_FONT=$(fc-match -f %{file} monospace 2> /dev/null)
		[ ! -z "$DEFAULT_MONOSPACE_FONT" -a ! -f "${DESTDIR}${DEFAULT_MONOSPACE_FONT}" ] && copy_file font "$DEFAULT_MONOSPACE_FONT"

		[ ! -z "$DEFAULT_FONT" ] && ln -s "$DEFAULT_FONT" ${DESTDIR}/usr/share/fonts/Plymouth.ttf
		[ ! -z "$DEFAULT_MONOSPACE_FONT" ] && ln -s "$DEFAULT_MONOSPACE_FONT" ${DESTDIR}/usr/share/fonts/Plymouth-monospace.ttf
		case "${THEME_NAME}" in
			spinner|bgrt)
				# ATM, this is needed by the spinner and bgrt themes
				if [ -e /usr/share/fonts/opentype/cantarell/Cantarell-Regular.otf ]
				then
					mkdir -p "${DESTDIR}/usr/share/fonts/opentype/cantarell"
					cp -dRp /usr/share/fonts/opentype/cantarell/Cantarell-Regular.otf "${DESTDIR}/usr/share/fonts/opentype/cantarell"
					cp -dRp /usr/share/fonts/opentype/cantarell/Cantarell-Light.otf "${DESTDIR}/usr/share/fonts/opentype/cantarell"
				fi
				if [ -e /usr/share/fonts/opentype/cantarell/Cantarell-VF.otf ]
				then
					mkdir -p "${DESTDIR}/usr/share/fonts/opentype/cantarell"
					cp -dRp /usr/share/fonts/opentype/cantarell/Cantarell-VF.otf "${DESTDIR}/usr/share/fonts/opentype/cantarell"
				fi
				# We continue to the default case here
				;;
		esac
		fc-cache -s -y "${DESTDIR}" > /dev/null 2>&1

		# copy /etc/default/keyboard (needed for keymap detection)
		if [ -e /etc/default/keyboard ]
		then
			mkdir -p "${DESTDIR}/etc/default"
			cp /etc/default/keyboard "${DESTDIR}/etc/default"
		fi

		# for two-step
		case "$(sed -n 's/^ModuleName=\(.*\)/\1/p' ${THEME})" in
			two-step)
				# add watermark.png if theme didn't ship it
				logo=/usr/share/desktop-base/debian-logos/logo-text-version-64.png
				if [ -e $logo ] && [ ! -e "${DESTDIR}/${IMAGE_DIR}/watermark.png" ]
				then
					cp $logo "${DESTDIR}/${IMAGE_DIR}/watermark.png"
				fi
				;;
		esac
		;;
esac

# add drm modules
MODULES_EXCLUDE="mga r128 savage sis tdfx via panfrost"
if [ "$MODULES" = "dep" ]; then
	for DRM_DEVICE in "/sys/class/drm"/*; do
		DRM_DEVICE="$(readlink -f "$DRM_DEVICE")" || continue
		MODULE_PATH="$(readlink -f "$DRM_DEVICE/device/driver/module")" || continue
		MODULE_NAME="$(basename "$MODULE_PATH")" || continue

		for m in $MODULES_EXCLUDE; do
			if [ "$MODULE_NAME" = "$m" ]; then
				continue 2
			fi
		done

		sys_walk_mod_add "$DRM_DEVICE" \
			|| echo "W: plymouth: couldn't include modules for '$DRM_DEVICE'"
	done
elif [ "$MODULES" = "list" ]; then
	echo "W: plymouth: not including drm modules since MODULES=list"
else
	copy_modules_dir kernel/drivers/gpu/drm $MODULES_EXCLUDE
fi

# copy renderers
copy_exec /usr/lib/@DEB_HOST_MULTIARCH@/plymouth/renderers/frame-buffer.so
copy_exec /usr/lib/@DEB_HOST_MULTIARCH@/plymouth/renderers/drm.so

# copy config files
mkdir -p "${DESTDIR}/etc/plymouth"

if [ -r /etc/plymouth/plymouthd.conf ]
then
	cp -dRp /etc/plymouth/plymouthd.conf "${DESTDIR}/etc/plymouth/"
fi

cp -dRp /usr/share/plymouth/plymouthd.defaults "${DESTDIR}/usr/share/plymouth/"

# temporarily include dummy root account lookup (#691598)
if ! grep -qs '^root:' "${DESTDIR}/etc/passwd"
then
	echo "root:x:0:0:root:/root:/bin/sh" >> "${DESTDIR}/etc/passwd"
fi

if ! grep -qs '^passwd: files' "${DESTDIR}/etc/nsswitch.conf"
then
	echo "passwd: files" >> "${DESTDIR}/etc/nsswitch.conf"
fi

for _LIBRARY in /lib/@DEB_HOST_MULTIARCH@/libnss_files*
do
	if [ -e "${_LIBRARY}" ]
	then
		copy_exec "${_LIBRARY}"
	fi
done