chore: add comments, add error validation

Author: Esscraye

dotfiles/.config/ml4w/scripts/ml4w-sidepad

@@ -26,7 +26,6 @@ if [ -f "$SIDEPAD_POS_FILE" ]; then
 else
     SIDEPAD_POS="left"
 fi
-source $SIDEPAD_PADS_FOLDER/$(cat "$SIDEPAD_DATA")
 source $SIDEPAD_PADS_FOLDER/$SIDEPAD_ACTIVE
 echo ":: Current sidepad: $SIDEPAD_ACTIVE"
 echo ":: Current sidepad app: $SIDEPAD_APP"
@@ -65,8 +64,10 @@ if [[ "$1" == "--init" ]]; then
     eval "$SIDEPAD_PATH --position '$SIDEPAD_POS' --class '$SIDEPAD_CLASS' --init '$SIDEPAD_APP'"
 elif [[ "$1" == "--hide" ]]; then
     if [[ "$SIDEPAD_POS" == "left" ]]; then
+        # Hide left sidepad
         eval "$SIDEPAD_PATH --position '$SIDEPAD_POS' --class '$SIDEPAD_CLASS' --hide"
     else
+        # Show right sidepad
         eval "$SIDEPAD_PATH --position '$SIDEPAD_POS' --class '$SIDEPAD_CLASS' $SIDEPAD_OPTIONS"
     fi
 elif [[ "$1" == "--test" ]]; then

dotfiles/.config/sidepad/sidepad

@@ -92,6 +92,10 @@ while [[ $# -gt 0 ]]; do
         ;;
 
         --position)
+            if [[ "$2" != "left" && "$2" != "right" ]]; then
+                echo "Error: --position must be either 'left' or 'right' (got '$2')." >&2
+                exit 1
+            fi
             POSITION="$2"
             shift; shift
         ;;
@@ -213,7 +217,10 @@ if [[ "$HIDE_REQUESTED" -eq 1 ]]; then
         # Restore focus
         if [ -f "$PREV_FOCUS_FILE" ]; then
             PREV_FOCUS=$(cat "$PREV_FOCUS_FILE")
-            hyprctl dispatch focuswindow address:$PREV_FOCUS
+            if [[ -n "$PREV_FOCUS" ]]; then
+                # Suppress errors in case the previous window no longer exists or the address is invalid
+                hyprctl dispatch focuswindow address:"$PREV_FOCUS" 2>/dev/null || true
+            fi
             rm "$PREV_FOCUS_FILE"
         fi