[Bitrise] Git Tag

#!/bin/bash
# fail if any commands fails
set -e
# debug log
# set -x

export push="true"
export tag=$APP_VERSION_WITH_PRE_RELEASE_INFO
export tag_message=$APP_VERSION_WITH_PRE_RELEASE_INFO

if [ -n "${push}" -a "${push}" == "true" -o "${push}" == "false" ]
then
    git tag -a ${tag} -m "${tag_message}"
    if [ "${push}" == "true" ]; then
        git push origin ${tag}
    fi
    if (( $? )); then
        echo "Failure" >&2
        exit 1
    else
        echo "Success, new tags are :"
        echo "$(git tag)"
        # code block that is dependent on success of previous command
    fi
    exit 0
else
    echo "push variable is required and could only be set to true or false"
    exit 1
fi