From 75591ce5af30213e51c256944be1696050cde592 Mon Sep 17 00:00:00 2001
From: Ohad Livne <libohad-dev@proton.me>
Date: Wed, 4 Jun 2025 22:44:52 +0300
Subject: [PATCH] Regularly back up Documents/ and some configuration files

---
 .config/setup/crontab      |  1 +
 .local/bin/dirtree-changed | 52 ++++++++++++++++++++++++++++++++++++++
 .local/bin/make-backup     | 22 ++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100755 .local/bin/dirtree-changed
 create mode 100755 .local/bin/make-backup

diff --git a/.config/setup/crontab b/.config/setup/crontab
index 1d20f29..a52cfe8 100644
--- a/.config/setup/crontab
+++ b/.config/setup/crontab
@@ -1 +1,2 @@
 @hourly /home/ohad/.local/bin/update-weather
+@hourly /home/ohad/.local/bin/make-backup
diff --git a/.local/bin/dirtree-changed b/.local/bin/dirtree-changed
new file mode 100755
index 0000000..3220477
--- /dev/null
+++ b/.local/bin/dirtree-changed
@@ -0,0 +1,52 @@
+#! /usr/bin/python3
+
+from pathlib import Path
+
+
+def get_subtree_mtime(root: str | Path) -> float:
+    from itertools import chain
+    from os import walk
+    from os.path import getmtime
+
+    maxtime = 0
+
+    for dirname, _, filenames in walk(root):
+        dirpath = Path(dirname)
+        maxtime = max(
+            chain(
+                [maxtime, getmtime(dirpath)],
+                (getmtime(dirpath / filename) for filename in filenames),
+            )
+        )
+
+    return maxtime
+
+
+def tree_changed_p(root: str | Path, check_file: str | Path) -> bool:
+    from os.path import getmtime
+
+    try:
+        filetime = getmtime(check_file)
+    except FileNotFoundError:
+        return True
+
+    return get_subtree_mtime(root) > filetime
+
+
+if __name__ == "__main__":
+    import argparse
+    import sys
+
+    parser = argparse.ArgumentParser(description="Manage the desktop containers")
+
+    parser.add_argument("--directory", required=True, help="Directory tree to check")
+    parser.add_argument(
+        "--check-file", required=True, help="Timestamp file for comparison"
+    )
+
+    args = parser.parse_args()
+
+    if tree_changed_p(root=args.directory, check_file=args.check_file):
+        sys.exit(0)
+    else:
+        sys.exit(1)
diff --git a/.local/bin/make-backup b/.local/bin/make-backup
new file mode 100755
index 0000000..cf9262f
--- /dev/null
+++ b/.local/bin/make-backup
@@ -0,0 +1,22 @@
+#! /usr/bin/sh
+
+export BORG_REPO="/media/backup/"
+export BORG_PASSCOMMAND="cat ${HOME}/.keys/borg-passphrase.txt"
+
+TS_DIR="${HOME}/.local/state/backup"
+
+mkdir -p "${TS_DIR}"
+
+backup () {
+    target=$1
+    directory=$2
+
+    if "${HOME}/.local/bin/dirtree-changed" --directory "${directory}" --check-file "${TS_DIR}/${target}"
+    then
+        borg create --compression auto,lzma ::"${target}"-{now} "${directory}"
+        touch "${TS_DIR}/${target}"
+    fi
+}
+
+backup circuits "${HOME}/.config/circuits"
+backup documents "${HOME}/Documents"