add scripts

update_academic.sh

@@ -1,10 +1,55 @@
 #!/usr/bin/env bash
 
-# Display available updates to Academic.
+# Source Themes Academic: Theme updater
+# Checks for available updates and then asks to install any updates.
+# https://sourcethemes.com/academic/
+#
+# Command: bash ./update_academic.sh
+
+# Check for prerequisites.
+if [ ! -d .git ]; then
+  echo "ERROR: This tool is for Git repositories only."
+  exit 1;
+fi
+
+# Function to update Academic
+function install_update () {
+  # Apply any updates
+  git submodule update --remote --merge
+
+  # - Update Netlify.toml with required Hugo version
+  if [ -f ./netlify.toml ]; then
+    version=$(sed -n 's/^min_version = //p' themes/academic/theme.toml)
+    sed -i '' -e "s/HUGO_VERSION = .*/HUGO_VERSION = $version/g" ./netlify.toml
+  fi
+
+  echo
+  echo "View the release notes at: https://sourcethemes.com/academic/updates"
+  echo "If there are breaking changes, the config and/or front matter of content" \
+  "may need upgrading by following the steps in the release notes."
+}
+
+# Display currently installed version (although could be between versions if updated to master rather than tag)
+version=$(sed -n 's/^version = "//p' themes/academic/data/academic.toml)
+echo -e "Source Themes Academic v$version\n"
+
+# Display available updates
+echo -e "Checking for updates...\n"
 cd themes/academic
 git fetch
 git log --pretty=oneline --abbrev-commit --decorate HEAD..origin/master
 cd ../../
 
-# Update Academic.
-git submodule update --remote --merge
+title="Do you wish to install the above updates?"
+prompt="Choose an option and press Enter:"
+options=("Yes" "No")
+
+echo "$title"
+PS3="$prompt "
+select opt in "${options[@]}"; do
+    case $opt in
+        Yes ) install_update; break;;
+        No ) break;;
+        * ) break;;
+    esac
+done