1 files changed, 57 insertions, 16 deletions
diff --git a/ungoogled-chromium-update.sh b/ungoogled-chromium-update.sh
index 34e7baa..7d1659d 100755
--- a/ungoogled-chromium-update.sh
+++ b/ungoogled-chromium-update.sh
@@ -3,7 +3,11 @@
 # Shell script to install the latest version of ungoogled-chromium over the version on the machine if an update is available (using atom feed). User can specify a subgrouping (default is AppImage)
 
 # path for downloading ungoogled-chromium and comparing version numbers (FIXME WIP)
-UG_PATH="$HOME/Applications/ungoogled-chromium"
+# TODO write function to search through user's path for ungoogled-chromium
+UG_PATH="$HOME/Applications/appimage/ungoogled-chromium_87.0.4280.141-1.1_linux.AppImage"
+
+# Set default platform to look for new version from
+DEFAULT_PLATFORM="AppImage"
 
 # URL for atom feed
 ATOM_URL="https://raw.githubusercontent.com/ungoogled-software/ungoogled-chromium-binaries/master/feed.xml"
@@ -17,34 +21,71 @@ PLATFORM_TABLE=$(echo "$PARSED_XML" | grep -E '(/feed/entry/title=)|(/feed/entry
 echo "$PLATFORM_TABLE"
 
 
+# Function to print a message that the currently installed ungoogled-chromium is up to date
+nothing_to_do() {
+	echo "$UG_PATH is up to date"
+}
+
 # Function to check if $1 is higher version than $2
-# $1 -> remote version (example: 91.0.4472.164-1.1)
-# $2 -> local version (example: 91.0.4472.114-1
+# $1 -> remote version (example: 91.0.4472.164)
+# $2 -> local version (example: 91.0.4472.114)
 # Return value:
 # 	0 -> $1 <= $2 (no need to update)
 # 	1 -> $1 >  $2 (update available)
 compare_version() {
+	echo "$1"
+	echo "$2"
+
 	# Break into arrays
 	local IFS='.'
 	read -ra V1 <<< "$1"
 	read -ra V2 <<< "$2"
 
-	# for val in "${V1[@]}"; do
-	# 	echo "$val"
-	# done
-	# echo ${#V1[@]}
-	# for val in "${V2[@]}"; do
-	# 	echo "$val"
-	# done
-	# echo ${#V2[@]}
+	for val in "${V1[@]}"; do
+		echo "$val"
+	done
+	echo ${#V1[@]}
+	for val in "${V2[@]}"; do
+		echo "$val"
+	done
+	echo ${#V2[@]}
 
 	# Determine shorter array (for the loop)
 	local LENGTH=${#V1[@]}
-	if [ ${#V1[@]} -gt ${#V2[@]} ]; then
-		local LENGTH=${#V2[@]}
-	fi
 
-	echo "$LENGTH"
+	for (( i = 0 ; i < LENGTH ; i++ )); do
+		if [ "${V1[$i]}" -gt "${V2[$i]}" ]; then
+			return 1
+		elif [ "${V1[$i]}" -lt "${V2[$i]}" ]; then
+			return 0
+		fi
+	done
+
+	return 0
 }
 
-compare_version "91.0.4472.164-1.1" "91.0.4472.114-1"
+
+# DEBUG
+#compare_version "91.0.4472.164" "91.0.4472.114"
+
+# Determine local version if ungoogled-chromium is installed
+if [ -x "$UG_PATH" ]; then
+	VERSION=$($UG_PATH --version | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")
+	echo "$VERSION"
+fi
+
+# If ungoogled-chromium is installed on the machine, check if there is a newer version
+LATEST=$(echo "$PLATFORM_TABLE" | grep "$DEFAULT_PLATFORM")
+# TODO handle ambiguous DEFAULT_PLATFORM
+# TODO handle if unknown DEFAULT_PLATFORM
+
+if [ -n "$VERSION" ]; then
+
+	compare_version "$(echo "$LATEST" | head -n 1 | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")" "$VERSION" 
+	if [ $? -eq 0 ]; then
+		nothing_to_do
+		exit
+	else
+		echo "Gotta update!"
+	fi
+fi