move scripts to backend

backend/scripts/migrate-data.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# this scrips making a backup file to /tmp/export-remark.gz and loading it back
+# useful to migrate data schema in case if new version of data store incomaptible with the stored comments.
+set -e
+echo "make backup file for site $1"
+curl "http://127.0.0.1:8081/api/v1/admin/export?site=${1}&secret=${SECRET}" > /tmp/export-remark.gz
+
+BOLTDB_PATH=${BOLTDB_PATH:-./var}
+BACKUP_PATH=${BACKUP_PATH:-./var}
+
+cp ${BOLTDB_PATH}/${1}.db ${BACKUP_PATH}/${1}-$(date +%s).db
+
+echo "import backup to site $1"
+echo "unpack /tmp/export-remark.gz"
+gunzip -c /tmp/export-remark.gz >/tmp/backup.remark
+ls -laH /tmp/backup.remark
+
+echo "export to site $1"
+curl -X POST -H "Content-Type: application/json" --data-binary @/tmp/backup.remark "http://127.0.0.1:8081/api/v1/admin/import?site=${1}&provider=native&secret=${SECRET}"
+
+rm /tmp/backup.remark
+rm /tmp/export-remark.gz
+
+echo "migration completed"