bulk update of gitlab repositories. search desired repositories, checkout, update and push to origin as merge request

bulk-update-gitlab-repositories

#!/bin/bash

CHECKOUT_DIR=/tmp/checkout

COMMIT_MESSAGE=
BRANCH_NAME=
UPDATE_SCRIPT=
SEARCH=
GROUP_NAME=
PUSH=no

find_all_projects() {
	local match project_id project ssh_url_to_repo search group
        group=$1 ; shift; search="$@"
	glab api "groups/$group/search?scope=blobs&search=$search" | jq -c '.[]'| \
	while read match; do
	project_id=$(jq -r .project_id <<< "$match")
		project=$(glab api projects/$project_id)
		ssh_url_to_repo=$(jq -r .ssh_url_to_repo <<< "$project")
		echo $ssh_url_to_repo
		return
	done
}

checkout() {
	local url directory
	url=$1
	directory=$CHECKOUT_DIR/$(basename $url .git)
	
	if [[ -d $directory ]] ; then
		echo "ERROR: $directory already exists" >&2
		exit 1
	fi
	git clone $url $directory
	(cd $directory && git switch --create $BRANCH_NAME)
}

update() {
	local url directory
	url=$1
	directory=$CHECKOUT_DIR/$(basename $url .git)
	(
		cd $directory
		$UPDATE_SCRIPT
	)
	
}

create_pull_request() {
	local url directory
	url=$1
	directory=$CHECKOUT_DIR/$(basename $url .git)
	(
	cd $directory

	if [[ -n $(git status -s .) ]] ; then
		echo "INFO: updated" >&2
		git add .
		git commit -m "$COMMIT_MESSAGE"
		if [[ $PUSH == yes ]] ; then
			git push -omerge_request.create
		fi
	else
		echo "INFO: no changes for $url" >&2
	fi
	)
}

usage() {
	echo "Usage: $(basename $0) [-p] -g <group> -b <branch-name> -c <commit-message> -u <update-script> -s <search>" >&2
	echo "$@">&2
	exit 1
}

parse_command_line_options() {
	while getopts pg:s:b:c:u: option
	do
	  case "${option}"
	  in
	    p) PUSH=yes;;
	    b) BRANCH_NAME=${OPTARG};;
	    c) COMMIT_MESSAGE=${OPTARG};;
	    u) UPDATE_SCRIPT="$(cd "$(dirname "${OPTARG}")"; pwd)/$(basename "${OPTARG}")";;
	    s) SEARCH=${OPTARG};;
	    g) GROUP=${OPTARG};;
	  esac
	done

	# Check if all required options were specified
	if [[ -z $BRANCH_NAME || -z $COMMIT_MESSAGE || -z $UPDATE_SCRIPT || -z $SEARCH  || -z $GROUP ]]
	then
	  usage "ERROR: not all required options specified."
	fi

	if [[ ! -x $UPDATE_SCRIPT ]]; then
		usage" ERROR: $UPDATE_SCRIPT is not an executable script"
	fi
}

main() {
	parse_command_line_options "$@"
	find_all_projects "$GROUP" "$SEARCH" | while read url; do
		checkout $url
		update $url
		create_pull_request $url
		exit 0
	done
}

main "$@"