fix: [nextcloud] move nextcloud php config files towards datastore

This makes sense as it is modifiable by the web interface, and holds
unique information we want to backup and we can't regenerate.

nextcloud/actions/upgrade

@@ -56,7 +56,12 @@ while [ "$1" ]; do
 done
 
 nextcloud:config:version() {
-    cat "$SERVICE_CONFIGSTORE/var/www/html/config/config.php" |
+    for f in {"$SERVICE_CONFIGSTORE","$SERVICE_DATASTORE"}/var/www/html/config/config.php; do
+        if [ -e "$f" ]; then
+            cat "$f"
+            break
+        fi
+    done |
         grep "'version' =>" |
         cut -f 4 -d \' |
         cut -f 1-3 -d .

nextcloud/hooks/init

@@ -19,6 +19,28 @@ admin_user=$(options-get admin.user 2>&1) || {
     admin_user="admin"
 }
 
+
+OLD_CONFIGDIR="$SERVICE_CONFIGSTORE/var/www/html/config"
+if [ -d "$OLD_CONFIGDIR" ]; then
+    info "Old config directory found"
+    if [ -d "$CONFIGDIR" ]; then
+        if ! dir_is_empty "$CONFIGDIR"; then
+            err "Both old and new config directories found"
+            exit 1
+        fi
+        rmdir "$CONFIGDIR" || {
+            err "Failed to remove new (empty) config directory"
+            exit 1
+        }
+    fi
+    mkdir -p "${CONFIGDIR%/*}" || exit 1
+    mv -v "$OLD_CONFIGDIR" "$CONFIGDIR" || {
+        err "Failed to move old config directory to new location"
+        exit 1
+    }
+fi
+
+
 first_run=0
 read-0 current_user current_password < <(get_admin_user_password) || {
     info "Probably no admin user and password set before."

nextcloud/lib/common

@@ -8,7 +8,8 @@ PASSWORD_FILE="$SERVICE_CONFIGSTORE/etc/$SERVICE_NAME/pass"
 
 ## Used to check existence and make direct changes when 'occ' command
 ## can't do it properly.
-CONFIGFILE="$SERVICE_CONFIGSTORE/var/www/html/config/config.php"
+CONFIGDIR="$SERVICE_DATASTORE/var/www/html/config"
+CONFIGFILE="$CONFIGDIR/config.php"
 
 
 has_user() {

nextcloud/metadata.yml

@@ -2,8 +2,6 @@ docker-image: docker.0k.io/nextcloud:18.0.1-myc
 data-resources:
   - /var/www/html
   - /var/lib/nextcloud/data
-config-resources:
-  - /var/www/html/config
 provides:
   nextcloud-app:
 uses: