Add backup script

It's very primitive but will do for now.

Author: booxter

.gitignore

@@ -1,4 +1,5 @@
 *.sqlite
+backup/*
 *.db
 */__pycache__/
 *.pyc

scripts/backup-db.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+DIR=backup
+
+mkdir -p $DIR
+
+function cleanup {
+    # Delete oldest backup
+    candidate="$(find $DIR -type f | sort | head -n 1)"
+    echo "Deleting $candidate"
+    rm "$candidate"
+}
+
+# Make sure backup directory doesn't take more than 30gb (+the new backup)
+while [ "$(du -s $DIR | cut -f1)" -gt 3000000 ]; do
+    cleanup
+done
+
+cp movie.db "$DIR/$(date +%Y-%m-%d-%H-%M-%S)-movie.db"