#!/bin/bash

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source ${SCRIPT_DIR}/platforms-common.sh

WORKSPACE=$PWD
YYMM=${1:-`date +%y`.`date +%m`}
REV=${2:-1}

function check_params
{
	if [[ $YYMM == [0-9][0-9].[0-9][0-9] ]]; then
		if [[ $REV != [0-9] ]]; then
			echo "ERROR: you need to specify a number as the second arg, but you did \"$REV\""
			exit 1
		fi
	else
		echo "ERROR: you need to specify YY.MM as the first arg, but you did \"$YYMM\""
		exit 1
	fi
}

function update_tarball
{
	pushd recovery

	# there should be a marker file named juno-${YY}.${MM}-linaro${REL}
	# if not we should create it
	local pattern="juno-[0-9][0-9].[0-9][0-9]-linaro[0-9]"
	local count=0
	local markerfile=juno-${YYMM}-linaro${REV}

	if [ -e ${pattern} ]; then
		# if a marker file exists, but it has the wrong version, abort
		if [ ${pattern} != ${markerfile} ]; then
			echo "ERROR: a marker file exists, but has the wrong version"
			echo "ERROR: I expected: ${markerfile}"
			echo "ERROR: but found:  `ls $pattern`"
			exit 1
		fi
		count=`ls ${pattern} | wc -l`
	fi
	if [[ "$count" == "0" ]]; then
		# the marker file doesn't exist, so create it
		echo "Creating marker file ${markerfile}"
		find . -name "*" -type f | \
			grep -v -e .git -e ${markerfile} | \
			sort | \
			xargs md5sum > ${markerfile}

		# check the marker file in
		git add ${markerfile}
		git commit -s -a -m "${markerfile}"

		# tag it
		git tag ${markerfile}
		git push working ${markerfile}

		# update the juno, junor1 and junor2 branches
		git branch -f juno
		git branch -f junor1
		git branch -f junor2

		git push working
		git push working juno
		git push working junor1
		git push working junor2
		count=1
	fi

	if [[ "$count" != "1" ]]; then
		echo "ERROR: There should only be one marker file, but I see ${count}"
		exit 1
	fi

	local ver=${YYMM}-linaro${REV}
	echo "Tarball version: $ver"

	# generate the recovery tarball
	tar jcvf ${WORKSPACE}/board_recovery_image.tar.bz2 *

	# save current branch
	local initial_branch=`echo $(git branch | grep "*" | sed "s/* //")`

	# swap to recovery branch
	git checkout juno-recovery-tarball

	# copy in the recovery tarball
	cp ${WORKSPACE}/board_recovery_image.tar.bz2 .

	git commit -s -a -m "board_recovery_image (version ${ver})"
	local tag=tarball-${ver}
	git tag $tag
	git push working $tag
	git push working juno-recovery-tarball

	# now we're finished, checkout the branch where we started
	git checkout $initial_branch
	popd
}

check_params
check_workspace
update_tarball