Repo branch sync

configure_repo.sh

#!/usr/bin/env bash

function usage {
  echo "usage: configure_repo.sh [local_repo local_branch remote_repo remote_branch]"
}

local_repo=$1
local_branch=$2
remote_repo=$3
remote_branch=$4

if [[ $# -ne 4 ]]; then
    echo -e "ERROR: Invalid number of arguments \n";
    usage
    exit -1;
fi;

if [[ ! -d ${local_repo} ]]; then
        echo "Local repo provided does not exist! Check your arguments."
	exit 1
fi;

cat > ${local_repo}/repo.config <<END
upstream=${remote_repo}
local_branch=${local_branch}
remote_branch=${remote_branch}
END


pre_commit_script='#!/usr/bin/env bash

DIR="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

. ${DIR}/../../repo.config

git_cmd="git --git-dir=${DIR}/../../.git --work-tree=${DIR}/../.."

if [[ `$git_cmd remote -v | grep upstream` ]]; then
        echo "Upstream alrady added!"
else
        echo "Adding upstream..."
        $git_cmd remote add upstream ${upstream}
fi;

#performing fetch and merging

$git_cmd fetch upstream
$git_cmd checkout ${local_branch}
$git_cmd merge upstream/${remote_branch}'

cat > ${local_repo}/.git/hooks/pre-commit <<END
${pre_commit_script}
END

chmod +x ${local_repo}/.git/hooks/pre-commit