#!/usr/bin/env bash

set -e
set -u

if [ -z "${ZULIP_NEW_MERGE_BASE_COMMIT:-}" ]; then
    echo "push_git_ref: Can't push because deploy is not from git!"
    exit 0
fi

if ! repo=$(crudini --get /etc/zulip/zulip.conf push_git_ref repo); then
    echo "push_git_ref: No repo set!  Set push_git_ref.repo in /etc/zulip/zulip.conf"
    exit 0
fi

if ! ref=$(crudini --get /etc/zulip/zulip.conf push_git_ref ref); then
    echo "push_git_ref: No ref set!  Set push_git_ref.ref in /etc/zulip/zulip.conf"
    exit 0
fi

git push -f "$repo" "$ZULIP_NEW_MERGE_BASE_COMMIT:$ref"