annotate script

s6-rc-inotify/run

@@ -1,15 +1,19 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
+# Check if inotify exists. If not, install it.
 if  ! command -v inotifywait 2>&1 >/dev/null; then
 	echo "No inotifywait found. install inotify tools"
 	apk add inotify-tools	
 fi
 
-echo "running inotify"
-
+# define stuff that should be excluded some watches.
 BASEEXCLUDE='.*\.swp|.*\.swx'
 
+# the main function where all of the magic happens. takes 4 arguments:
+# - the folder to watch
+# - stuff to exclude
+# - two arguments to replace things in the paths coming from inotify, to turn them into a path nextcloud understands.
 detect(){
 	WATCH=$1
 	EXCLUDE=$2
@@ -17,30 +21,41 @@ detect(){
 	REPLACEWITH=$4
 
 	echo "watching $WATCH and excluding $EXCLUDE"
-
+	
+	# this uses inotifywait to watch for changes
+	# then it runs the code in the while block to handle file paths it spits out
 	inotifywait -mre close_write,delete --format '%e|%w|%f' --exclude "$EXCLUDE" "$WATCH" | while read RAWEVENT
 	do
-
-echo $RAWEVENT
+		# inotifywait spits out the events like "eventtype|/directory|filename"
+		# here we split them into it's three parts.
 		IFS='|'
 		read -a SPLITEVENT <<< "$RAWEVENT"
 
 		EVENT=${SPLITEVENT[0]}
 		DIR=${SPLITEVENT[1]}
 		FILE=${SPLITEVENT[2]}
-		
+
+		# by default, scan the whole directory
+		# we can't scan a file that's been deleted
 		REPLACEDFILE=$DIR
 
+		# if the event wasn't a delete, we append the filename
+		# so we only scan the file that was changed.
 		if [[ $EVENT != 'DELETE' ]]; then
 		REPLACEDFILE+=$FILE
 		fi
-		
+
+		# replace the beginning of the paths to the filename. 
+		# inotify spits out the filesystem path
+		# nextcloud expects the path relative to the user directory
 		if [ -n "$REPLACEIN" ] && [ -n "$REPLACEWITH" ]; then
 			REPLACEDFILE=${REPLACEDFILE/$REPLACEIN/$REPLACEWITH}
 		fi
 
+		# actually run the OCC command
 		occ files:scan --path=\"$REPLACEDFILE\" --shallow
 	done
 }
 
+# run the scan function on the folders I want scanned
 detect /data/riksolo/files $BASEEXCLUDE /data/riksolo /riksolo