#!/usr/bin/env bash

# fetch and merge from a remote repositry

REPOSITORY="$1";
BRANCH="$2";
REMOTE="$3";
if [ -n "${REMOTE}" ]; then
	REMOTE="origin"
fi;
# BASE_FOLDER="${HOME}/tmp/git-clone/";
BASE_FOLDER=$(dirname "$(readlink -f "$0")")"/";
# shellcheck source=init.sh
. "${BASE_FOLDER}init.sh";

# check that repository path exists
REPOSITORY_PATH="${GIT_REPOSITORY_FOLDER}${CLONE_BASE}${REPOSITORY}";
if [ ! -d "${REPOSITORY_PATH}$" ]; then
	echo "${REPOSITORY} not found in clone folder";
	exit;
fi;
LOG_FILE="${GIT_REPOSITORY_FOLDER}${LOG_FOLDER}${REPOSITORY}.log";

# fetch to null
${GIT_COMMAND} -C "${REPOSITORY_PATH}" fetch -q "${REMOTE}" "${BRANCH}";
changes=$(${GIT_COMMAND} -C "${REPOSITORY_PATH}" diff --stat HEAD "${REMOTE}"/"${BRANCH}");
if [ -n "${changes}" ]; then
	echo "[$(date +"%Y-%m-%d %H:%M:%S")] Changes" &>> "$LOG_FILE";
	${GIT_COMMAND} -C "/${REPOSITORY_PATH}" merge "${REMOTE}"/"${BRANCH}"
	echo "=[END]===>" &>> "$LOG_FILE";
fi;

# __END__