From 06073ed6d6d8e9d4a389ceff922e36a683e0e4f0 Mon Sep 17 00:00:00 2001
From: nachoparker <nacho@ownyourbits.com>
Date: Wed, 13 Mar 2019 00:24:57 -0600
Subject: [PATCH] add nc-previews-auto

---
 bin/ncp/CONFIG/nc-previews-auto.sh    | 67 +++++++++++++++++++++++++++
 changelog.md                          | 12 ++++-
 etc/ncp-config.d/nc-previews-auto.cfg | 22 +++++++++
 3 files changed, 99 insertions(+), 2 deletions(-)
 create mode 100644 bin/ncp/CONFIG/nc-previews-auto.sh
 create mode 100644 etc/ncp-config.d/nc-previews-auto.cfg

diff --git a/bin/ncp/CONFIG/nc-previews-auto.sh b/bin/ncp/CONFIG/nc-previews-auto.sh
new file mode 100644
index 000000000..c4d64427a
--- /dev/null
+++ b/bin/ncp/CONFIG/nc-previews-auto.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Periodically generate previews for the gallery
+#
+# Copyleft 2019 by Timo Stiefel and Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
+# GPL licensed (see end of file) * Use at your own risk!
+#
+
+isactive()
+{
+  [[ -f "/etc/cron.d/nc-previews-auto" ]]
+}
+
+configure()
+{
+  [[ "$ACTIVE" != "yes" ]] && {
+    rm -f /etc/cron.d/nc-previews-auto
+    service cron restart
+    echo "Automatic preview generation disabled"
+    return 0
+  }
+
+  grep -qP "^\d+$" <<<"$RUNTIME" || { echo "Invalid RUNTIME value $RUNTIME"; return 1; }
+  RUNTIME=$((RUNTIME*60))
+
+  echo "0  2  *  *  *  root  /usr/local/bin/nc-previews" >  /etc/cron.d/ncp-previews-auto
+  chmod 644 /etc/cron.d/ncp-previews-auto
+
+  cat > /usr/local/bin/nc-previews <<EOF
+#!/bin/bash
+echo -e "\n[ nc-previews-auto ]" >> /var/log/ncp.log
+ionice -c3 nice -n20 ncc preview:pre-generate -n -vvv 2>&1 >>/var/log/ncp.log &
+PID=\$!
+[[ "$RUNTIME" != 0 ]] && {
+  for i in \$(seq 1 1 $RUNTIME); do
+    sleep 1
+    kill -0 "\$PID" &>/dev/null || break
+  done
+  pkill -f preview:pre-generate
+}
+wait "\$PID"
+EOF
+chmod +x /usr/local/bin/nc-previews
+
+  service cron restart
+  echo "Automatic preview generation enabled"
+  return 0
+}
+
+install() { :; }
+
+# License
+#
+# This script is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This script is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this script; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+# Boston, MA  02111-1307  USA
diff --git a/changelog.md b/changelog.md
index 900500042..43c6b7500 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,7 +1,15 @@
 
-[v1.9.5](https://github.com/nextcloud/nextcloudpi/commit/bf794ec) (2019-03-09) nc-init: previews settings
+[v1.10.0](https://github.com/nextcloud/nextcloudpi/commit/b00c5f1) (2019-03-13) add nc-previews-auto
 
-[v1.9.4](https://github.com/nextcloud/nextcloudpi/commit/c40c430) (2019-03-09) unattended upgrades: update labels
+[v1.9.8  ](https://github.com/nextcloud/nextcloudpi/commit/d7bbe25) (2019-03-13) nc-scan: improvements
+
+[v1.9.7  ](https://github.com/nextcloud/nextcloudpi/commit/e03b095) (2019-03-13) nc-previews: improvements
+
+[v1.9.6  ](https://github.com/nextcloud/nextcloudpi/commit/ccb6fc1) (2019-03-13) nc-scan-auto: improvements
+
+[v1.9.5  ](https://github.com/nextcloud/nextcloudpi/commit/89cc042) (2019-03-09) nc-init: previews settings
+
+[v1.9.4  ](https://github.com/nextcloud/nextcloudpi/commit/0c95243) (2019-03-09) unattended upgrades: update labels
 
 [v1.9.3  ](https://github.com/nextcloud/nextcloudpi/commit/f5ba0b1) (2019-03-09) wizard: fix headers
 
diff --git a/etc/ncp-config.d/nc-previews-auto.cfg b/etc/ncp-config.d/nc-previews-auto.cfg
new file mode 100644
index 000000000..32d75239a
--- /dev/null
+++ b/etc/ncp-config.d/nc-previews-auto.cfg
@@ -0,0 +1,22 @@
+{
+  "id": "nc-previews-auto",
+  "name": "Nc-previews-auto",
+  "title": "nc-previews-auto",
+  "description": "Periodically generate previews for the gallery",
+  "info": "This will make browsing the gallery much more smooth.\nFor big collections, this can take a LONG time depending on your hardware.\nYou can specify a nightly duration in minutes, or 0",
+  "infotitle": "",
+  "params": [
+    {
+      "id": "ACTIVE",
+      "name": "Active",
+      "value": "no",
+      "type": "bool"
+    },
+    {
+      "id": "RUNTIME",
+      "name": "Run time",
+      "value": "0",
+      "suggest": "0"
+    }
+  ]
+}