Prevent disk_check from erasing our "Best Recordings"

let me know what you think

@mcguirepr89

scripts/disk_check.sh

@@ -7,8 +7,22 @@ if [ "${used//%}" -ge 95 ]; then
 
   case $FULL_DISK in
     purge) echo "Removing oldest data"
-       rm -drfv "$(find ${EXTRACTED}/By_Date/* -maxdepth 1 -type d -prune \
-         | sort -r | tail -n1)";;
+        cd ${EXTRACTED}/By_Date/
+
+        iter=0
+        for i in */*/*; do
+            if [ $iter -ge 250 ]; then
+                break
+            fi
+            if ! grep -qxFe "$i" $HOME/BirdNET-Pi/scripts/disk_check_exclude.txt; then
+                rm "$i"
+            fi
+            ((iter++))
+        done
+        find ${EXTRACTED}/By_Date/ -empty -type d -delete;;
+
+       #rm -drfv "$(find ${EXTRACTED}/By_Date/* -maxdepth 1 -type d -prune \
+        # | sort -r | tail -n1)";;
     keep) echo "Stopping Core Services"
        /usr/local/bin/stop_core_services.sh;;
   esac