# Copyright (C) 2016-2023, Digi International Inc.

SUMMARY = "Generate update package for SWUpdate"
SECTION = "base"
LICENSE = "GPL-2.0-only"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0-only;md5=801f80980d171dd6425610833a22dbe6"

SRC_URI = " \
    file://sw-description-images_template \
    file://sw-description-files_template \
    file://sw-description-rdiff_template \
    file://sw-description-uboot \
    file://swupdate_uboot_nand.sh \
    file://swupdate_uboot_mmc.sh \
    file://image_template_mmc \
    file://image_template_nand \
    file://image_template_rdiff_mmc \
    file://image_template_rdiff_nand \
    file://update_images.sh \
    file://update_files.sh \
    file://update_rdiff.sh \
"

inherit swupdate dey-swupdate-common

# Avoid all 'SRC_URI' files to be included in the SWU image. Include only 'SWUPDATE_IMAGES' files and 'sw-description' (added by default).
INHIBIT_SWUPDATE_ADD_SRC_URI = "true"

# Files to include in the SWU update package.
SWUPDATE_IMAGES = " \
    ${@oe.utils.ifelse(d.getVar('SWUPDATE_IS_IMAGES_UPDATE') == 'true', '${IMG_NAME}', '')} \
    ${@oe.utils.ifelse(d.getVar('SWUPDATE_IS_FILES_UPDATE') == 'true', '${SWUPDATE_FILES_TARGZ_FILE_NAME}', '')} \
    ${@oe.utils.ifelse(d.getVar('SWUPDATE_IS_RDIFF_UPDATE') == 'true', '${IMG_NAME} ${SWUPDATE_RDIFF_ROOTFS_DELTA_FILE_NAME}', '')} \
    ${@oe.utils.ifelse(d.getVar('SWUPDATE_UBOOTIMG') == 'true', '${UBOOT_PREFIX}', '')} \
    ${@oe.utils.ifelse(d.getVar('SWUPDATE_UBOOTIMG') == 'true', '${SWUPDATE_UBOOT_SCRIPT}', '')} \
    ${SWUPDATE_SCRIPT_NAME} \
"

# Associate images and file types.
python () {
    img_fstypes = d.getVar('BOOTFS_EXT')
    if d.getVar('SWUPDATE_IS_IMAGES_UPDATE') == "true":
        img_fstypes = img_fstypes + " " + d.getVar('ROOTFS_EXT')
    d.setVarFlag("SWUPDATE_IMAGES_FSTYPES", d.getVar('IMG_NAME'), img_fstypes)
    if (d.getVar('SWUPDATE_UBOOTIMG') == "true"):
        uboot_fstypes = d.getVar('UBOOT_EXT')
        d.setVarFlag("SWUPDATE_IMAGES_FSTYPES", d.getVar('UBOOT_PREFIX'), uboot_fstypes)
}

# Execute extra tasks before creating SWU update package.
python do_swuimage:prepend() {
    import glob
    import os.path
    import shutil

    # Set signing key for trustfence enabled updates.
    if (d.getVar('TRUSTFENCE_SIGN') == "1"):
        d.setVar('SWUPDATE_PRIVATE_KEY', glob.glob(d.getVar('SWUPDATE_PRIVATE_KEY_TEMPLATE'))[0])

    # Copy script file.
    updatescript = d.getVar('SWUPDATE_SCRIPT', True)
    imgdeploydir = d.getVar('DEPLOY_DIR_IMAGE', True)
    if "/" not in updatescript:
        workdir = d.getVar('WORKDIR', True)
        updatescript = os.path.join(workdir, updatescript)
    if os.path.isfile(updatescript):
        shutil.copyfile(updatescript, os.path.join(imgdeploydir, os.path.basename(updatescript)))
}

# Create and fill 'sw-description' file.
fill_description() {
	if [ "${SWUPDATE_UBOOTIMG}" = "true" ]; then
		cp ${WORKDIR}/sw-description-uboot ${WORKDIR}/sw-description
		cp ${WORKDIR}/${SWUPDATE_UBOOT_SCRIPT} ${DEPLOY_DIR_IMAGE}/${SWUPDATE_UBOOT_SCRIPT}
		if [ "${TRUSTFENCE_DEK_PATH}" != "0" ] && [ "${TRUSTFENCE_DEK_PATH}" != "default" ]; then
			sed -i -e "s,##UBOOTIMG_ENC##,enc,g" "${WORKDIR}/sw-description"
		else
			sed -i -e "s,##UBOOTIMG_ENC##,normal,g" "${WORKDIR}/sw-description"
		fi
		sed -i -e "s,##UBOOTIMG_NAME##,${UBOOT_PREFIX}-${MACHINE}${UBOOT_EXT},g" "${WORKDIR}/sw-description"
		sed -i -e "s,##SWUPDATE_UBOOT_SCRIPT##,${SWUPDATE_UBOOT_SCRIPT},g" "${WORKDIR}/sw-description"
		sed -i -e "s,##UBOOTIMG_OFFSET##,${UBOOTIMG_OFFSET},g" "${WORKDIR}/sw-description"
	elif [ "${SWUPDATE_IS_FILES_UPDATE}" = "true" ]; then
		cp ${WORKDIR}/sw-description-files_template ${WORKDIR}/sw-description
	elif [ "${SWUPDATE_IS_RDIFF_UPDATE}" = "true" ]; then
		cp ${WORKDIR}/sw-description-rdiff_template ${WORKDIR}/sw-description
	else
		cp ${WORKDIR}/sw-description-images_template ${WORKDIR}/sw-description
	fi

	if [ "${SWUPDATE_IS_FILES_UPDATE}" = "true" ]; then
		return 0
	fi

	# Build image names.
	BOOT_IMAGE_NAME="${IMG_NAME}-${MACHINE}${BOOTFS_EXT}"
	ROOTFS_IMAGE_NAME="${IMG_NAME}-${MACHINE}${ROOTFS_EXT}"

	# Set correct image templates.
	BOOT_IMAGE_TEMPLATE="${SWUPDATE_IMAGES_IMAGE_TEMPLATE_FILE}"
	ROOTFS_IMAGE_TEMPLATE="${SWUPDATE_IMAGES_IMAGE_TEMPLATE_FILE}"
	if [ "${SWUPDATE_IS_RDIFF_UPDATE}" = "true" ]; then
		ROOTFS_IMAGE_TEMPLATE="${SWUPDATE_RDIFF_IMAGE_TEMPLATE_FILE}"
	fi

	# Add primary bank images section for dual boot systems.
	printf "%s,\n%s\n" \
            "$(sed -e "s,##IMG_NAME##,${BOOT_IMAGE_NAME},g" -e "s,##DEV##,${BOOT_DEV_NAME_A},g" -e "/compressed/d" "${BOOT_IMAGE_TEMPLATE}")" \
            "$(sed -e "s,##IMG_NAME##,${ROOTFS_IMAGE_NAME},g" -e "s,##DEV##,${ROOTFS_DEV_NAME_A},g" "${ROOTFS_IMAGE_TEMPLATE}")" \
            > images_temp.txt
	sed -i -e "/##IMAGES_PRIMARY##/r images_temp.txt" -e "/##IMAGES_PRIMARY##/d" "${WORKDIR}/sw-description"

	# Add secondary bank images section for dual boot systems.
	printf "%s,\n%s\n" \
            "$(sed -e "s,##IMG_NAME##,${BOOT_IMAGE_NAME},g" -e "s,##DEV##,${BOOT_DEV_NAME_B},g" -e "/compressed/d" "${BOOT_IMAGE_TEMPLATE}")" \
            "$(sed -e "s,##IMG_NAME##,${ROOTFS_IMAGE_NAME},g" -e "s,##DEV##,${ROOTFS_DEV_NAME_B},g" "${ROOTFS_IMAGE_TEMPLATE}")" \
            > images_temp.txt
	sed -i -e "/##IMAGES_SECONDARY##/r images_temp.txt" -e "/##IMAGES_SECONDARY##/d" "${WORKDIR}/sw-description"

	# Add images section for single boot systems.
	if [ "${SWUPDATE_IS_RDIFF_UPDATE}" != "true" ]; then
	    printf "%s,\n%s\n" \
                "$(sed -e "s,##IMG_NAME##,${BOOT_IMAGE_NAME},g" -e "s,##DEV##,${BOOT_DEV_NAME},g" -e "/compressed/d" "${BOOT_IMAGE_TEMPLATE}")" \
                "$(sed -e "s,##IMG_NAME##,${ROOTFS_IMAGE_NAME},g" -e "s,##DEV##,${ROOTFS_DEV_NAME_FINAL},g" "${ROOTFS_IMAGE_TEMPLATE}")" \
                > images_temp.txt
	    sed -i -e "/##IMAGES_SINGLE##/r images_temp.txt" -e "/##IMAGES_SINGLE##/d" "${WORKDIR}/sw-description"
	fi

	# Remove 'compressed' flag for read-only file systems as they use 'squashfs' images.
	if [ -n "${@bb.utils.contains('IMAGE_FEATURES', 'read-only-rootfs', '1', '', d)}" ]; then
		sed -i -e "/compressed/d" "${WORKDIR}/sw-description"
	fi

	# Clean dir.
	rm -f images_temp.txt
}
fill_description[dirs] = "${DEPLOY_DIR_IMAGE} ${WORKDIR}"
do_unpack[postfuncs] += "fill_description"