From d4a368b22cdc0ce21ef11df616b19a6e35851b28 Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Sun, 9 Aug 2026 12:20:54 +0200
Subject: [PATCH] add log rotate

---
 src/backup              | 10 ++++++++++
 tests/backup_tests.bats | 26 +++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/src/backup b/src/backup
index e6e522b..24daa6f 100755
--- a/src/backup
+++ b/src/backup
@@ -27,6 +27,15 @@ get_backup_type()
 	echo "none"
 }
 
+log_rotate()
+{
+	local logfile="$1"
+	local lines=
+	lines=$(wc --lines "$logfile" | awk '{print $1}')
+	[ "$lines" -lt "100" ] && return 0
+	savelog "$logfile"
+}
+
 log()
 {
 	local config="$1"
@@ -42,6 +51,7 @@ log()
 	logmsg="$datetime [$type] $msg"
 	echo "ℹ️ INFO: $logmsg -> $logfile"
 	echo "$logmsg" >> "$logfile"
+	log_rotate "$logfile"
 }
 
 exists_needed_commands()
diff --git a/tests/backup_tests.bats b/tests/backup_tests.bats
index ac6eb49..189c74b 100755
--- a/tests/backup_tests.bats
+++ b/tests/backup_tests.bats
@@ -894,4 +894,28 @@ for type in none day week month; do
 		--description "success log has logfile entry for type $type" \
 		-- \
 		write_log_entry "$type"
-done
\ No newline at end of file
+done
+
+# bats test_tags=backup:log
+@test "success no logrotate by 99 lines" {
+	mkdir --parents build/test
+	printf "logline%.0s\n" {1..99} > build/test/backup.log
+
+	run log_rotate "build/test/backup.log"
+
+	assert_success
+	[ -f "build/test/backup.log" ]
+	[ ! -f "build/test/backup.log.0" ]
+}
+
+# bats test_tags=backup:log
+@test "success logrotate by 100 lines" {
+	mkdir --parents build/test
+	printf "logline%.0s\n" {1..100} > build/test/backup.log
+
+	run log_rotate "build/test/backup.log"
+
+	assert_success
+	[ ! -f "build/test/backup.log" ]
+	[ -f "build/test/backup.log.0" ]
+}
\ No newline at end of file
-- 
2.47.3