add quota checker

.gitignore

@@ -1 +1,2 @@
 *.TO_BE_DELETED
+tmp/

docker-compose.yml

@@ -114,7 +114,8 @@ services:
         max-file: "5"
 
   nextcloud-cron-v1:
-    image: nextcloud:32.0.1-fpm
+    # image: nextcloud:32.0.1-fpm
+    image: nextcloud:32.0.2-fpm
     container_name: nextcloud-cron-v1
     restart: unless-stopped
     entrypoint: /cron.sh

tools/nextcloud_quotacheck.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+
+set -euo pipefail
+
+readonly CONTAINER_NAME="nextcloud-fpm-v1"
+readonly OCC_CMD="docker exec --user www-data $CONTAINER_NAME php occ"
+readonly THRESHOLD=95
+readonly SENDER_EMAIL="knusperkerne@posteo.de"
+
+USERS=$($OCC_CMD user:list | awk '{print $2}' | tr -d :)
+
+for USER in $USERS; do
+    EMAIL=$($OCC_CMD user:info "$USER" 2>/dev/null | grep -i "email:" \
+            | head -n 1 | sed -E 's/.*email: (.*)/\1/' | tr -d '[:space:]')
+    
+    # Falls die E-Mail ein "null" String oder leer ist
+    if [[ -z "$EMAIL" ]] || [[ "$EMAIL" == "null" ]]; then
+        echo "Skipping $USER: No valid email found in occ user:info."
+        continue
+    fi
+    
+    if [ -z "$EMAIL" ] || [ "$EMAIL" == "null" ]; then
+        echo "Skipping $USER: No valid email found."
+        continue
+    fi
+
+    QUOTA_RAW=$($OCC_CMD user:setting "$USER" files quota 2>/dev/null) || true
+
+    # Falls Quota auf 'none', leer oder Fehlermeldung
+    if [[ -z "$QUOTA_RAW" ]] || [[ "$QUOTA_RAW" == "none" ]] \
+        || [[ "$QUOTA_RAW" =~ "not exist" ]]; then
+        echo "Skipping $USER: No quota defined (none/default)."
+        continue
+    fi
+
+    # convert quota into bytes
+    CLEAN_VALUE=$(echo "$QUOTA_RAW" | grep -oP '^[0-9]+')
+    CLEAN_UNIT=$(echo "$QUOTA_RAW" | 
+                 grep -oP '[a-zA-Z]' | head -n 1 | tr '[:lower:]' '[:upper:]')
+
+    if [[ -z "$CLEAN_UNIT" ]]; then
+        QUOTA_BYTES=$CLEAN_VALUE
+    else
+        # numfmt versteht "50G", "2M" etc.
+        QUOTA_BYTES=$(numfmt --from=iec "${CLEAN_VALUE}${CLEAN_UNIT}")
+    fi
+
+    USED_BYTES=$(docker exec $CONTAINER_NAME \
+                 du -sb /var/www/html/data/"$USER"/files 2>/dev/null \
+                 | awk '{print $1}')
+    
+    USED_BYTES=${USED_BYTES:-0}
+
+    if [ "$QUOTA_BYTES" -gt 0 ]; then
+        PERCENT=$(( 100 * USED_BYTES / QUOTA_BYTES ))
+
+        if [ "$PERCENT" -ge "$THRESHOLD" ]; then
+            echo "WARNUNG: $USER ist bei $PERCENT% ($EMAIL)"
+
+            {
+                printf "Hallo %s,\n\n" "$USER"
+
+                printf "Dein Nextcloud-Speicher ist zu %s%% voll.\n\n" \
+                    "$PERCENT"
+
+                printf "Belegt: %s von %s.\n\n" \
+                    "$(numfmt --to=iec $USED_BYTES)" "$QUOTA_RAW" 
+
+                printf "Bitte lösche nicht mehr benötigte Dateien."
+            } \
+            | mailx -s "Nextcloud-Speicherwarnung ($PERCENT%)" -r "$SENDER_EMAIL" "$EMAIL"
+        else
+            echo "Quota usage for $USER is OK"
+        fi
+    fi
+done
+
+echo "Done."