From a1bb6268b5f1c61ee299b7033dcccbab7eff537b Mon Sep 17 00:00:00 2001
From: "Toerd@archlinux" <philipg@posteo.de>
Date: Wed, 7 Oct 2020 14:05:13 +0200
Subject: [PATCH] new: b-thesis backup script (webdav)

---
 backup_ba.sh | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100755 backup_ba.sh

diff --git a/backup_ba.sh b/backup_ba.sh
new file mode 100755
index 0000000..51f265b
--- /dev/null
+++ b/backup_ba.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+# author: phga
+# date: 2020-10-07
+# desc: short rudimentary script to create backups for my bachelor thesis
+#       and push them onto a webdav share
+# required: ripgrep (rg), otherwise change lines 22, 23 to your grep alternative
+#           that supports capture groups
+#           gpg encrypted password for nextcloud in same dir as script (./backup_ba_pw.gpg)
+me=$(dirname "$0")
+tmp_path=$(mktemp -d)
+today=$(date +%Y-%m-%d)
+archive_name_full="${today}_BA_full.tgz"
+archive_name_part="${today}_BA_part.tgz"
+# exclude .git, etc.
+tar_cmd="tar --exclude-vcs -czf"
+
+# CHANGE THESE TO YOUR REQUIRED DIRS/FILES/PATHS/URLS/USERS
+part_backup_files="/home/phga/sync/docs/study/BA/proposal /home/phga/sync/docs/study/BA/BA_WIP.org"
+full_backup_files="/home/phga/sync/docs/study/BA"
+
+backup_path="https://nx.phga.de/remote.php/dav/files/toerd/external/no_sync/backups/study_backups/BA/"
+nxt_user=toerd
+# PASSWORD: see desc in header (./backup_ba_pw.gpg)
+
+# get latest backup date (from filename, order in webdav seems to be asc - lucky for us)
+last_full_backup=$(curl -s -u toerd:$(gpg -d $me/backup_ba_pw.gpg) -X PROPFIND "$backup_path" | rg -o -e "(\d{4}-\d{2}-\d{2})_BA_full" -r '$1' | tail -1)
+last_part_backup=$(curl -s -u toerd:$(gpg -d $me/backup_ba_pw.gpg) -X PROPFIND "$backup_path" | rg -o -e "(\d{4}-\d{2}-\d{2})_BA_part" -r '$1' | tail -1)
+datediff_full_backup=$((($(date +%s) - $(date -d $last_full_backup +%s)) / (3600 * 24)))
+
+# Info output
+echo --------------------------------------
+echo Last full backup was $datediff_full_backup days ago
+echo Date last full backup: $last_full_backup
+echo Date last part backup: $last_part_backup
+echo --------------------------------------
+
+# If 14 days have passed, create a new full backup
+if [ -z $last_full_backup ] || [ $datediff_full_backup -gt 14 ]; then
+    $tar_cmd "$tmp_path$archive_name_full" $full_backup_files
+    curl -s -u $nxt_user:$(gpg -d $me/backup_ba_pw.gpg) -T "$tmp_path$archive_name_full" "$backup_path$archive_name_full"
+else
+    echo "---- No full backup required yet! ----"
+fi
+
+# if there is no important backup from this day, create one
+if [ -z $last_part_backup ] || [ $today != $last_part_backup ]; then
+    $tar_cmd "$tmp_path$archive_name_part" $part_backup_files
+    curl -s -u $nxt_user:$(gpg -d $me/backup_ba_pw.gpg) -T "$tmp_path$archive_name_part" "$backup_path$archive_name_part"
+else
+    echo "---- No part backup required yet! ----"
+fi
+
+# remove temp path
+rm -r $tmp_path
\ No newline at end of file