From c61eab7490a8d3897d0e48c9c8bd8f2aab7864ad Mon Sep 17 00:00:00 2001
From: Chris Koeritz <cak0l@virginia.edu>
Date: Wed, 17 Jun 2020 14:53:20 -0400
Subject: [PATCH] simple script attempts to update moodle

got tired of doing this manually.
---
 scripts/system/moodle_updater.sh | 81 ++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 scripts/system/moodle_updater.sh

diff --git a/scripts/system/moodle_updater.sh b/scripts/system/moodle_updater.sh
new file mode 100644
index 00000000..676b8a1e
--- /dev/null
+++ b/scripts/system/moodle_updater.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+
+# updates the moodle install, assuming all paths are at the default.
+
+source "$FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh"
+
+####
+# some constants that we know are not really.
+moodle_parent=/var/www/html
+  # parent directory is one level up from where moodle lives.
+moodle_dir=moodle
+  # this variable is just the directory name for moodle itself, not a path.
+moodle_release=moodle-3.9
+  # the name of the release we're expecting to download and install
+download_url="https://download.moodle.org/download.php/direct/stable39/${moodle_release}.tgz"
+  # where we can get the latest version of moodle for our chosen releases.
+####
+
+# everything below should be version invariant.
+
+moodle_path="$moodle_parent/$moodle_dir"
+  # composing the parent plus directory name should get us to moodle.
+
+if [ ! -d "$moodle_path" ]; then
+  echo "There was no moodle installation found at: $moodle_path"
+  exit 1
+fi
+
+# where we unpack our temporary stuff.
+temp_install="$(mktemp -d /tmp/update_moodle.XXXXXX)"
+#echo temp install dir is: $temp_install
+if [ ! -d "$temp_install" ]; then
+  echo The temporary installation directory at: $temp_install could not be created.
+  exit 1
+fi
+
+# quit the running moodle instance.
+systemctl stop httpd
+exit_on_error stopping httpd process before moodle upgrade.
+
+# jump into our new work area.
+pushd "$temp_install"
+
+# get the latest moodle version.  this could change over time,
+# but it's the best link i could find.
+wget "$download_url"
+exit_on_error downloading latest version of moodle.
+
+# use the feisty meow unpack script to extract the moodle data.
+unpack "${moodle_release}.tgz"
+exit_on_error unpacking latest version of moodle.
+
+# rename the old moodle directory to a unique name in the same area.
+old_moodle_path="$moodle_parent/moodle-$(basename $temp_install)"
+mv "$moodle_parent/$moodle_dir" "$old_moodle_path"
+exit_on_error renaming old version of moodle.
+
+# move the new stuff into place.
+mv "${moodle_release}/$moodle_dir" "$moodle_parent"/
+exit_on_error moving new version of moodle into place.
+
+# grab our important configuration files and put them back in the new directory.
+cp "$old_moodle_path/config.php" "$moodle_path"
+exit_on_error copying existing moodle configuration file: config.php
+
+echo -e "\
+====
+NOTE: This script does not copy any plugins or themes.  If you are using\n\
+updated or specialized additions to moodle, please copy them from here:\n\
+  $old_moodle_path\n\
+into the new install at:\n\
+  $moodle_path\n\
+====\n\
+"
+
+# restart the running moodle instance.
+systemctl stop httpd
+exit_on_error starting httpd process after moodle upgrade.
+
+# sunshine and roses!  we are through the gauntlet.
+
-- 
2.34.1