new: [nextcloud] remove the need to call ``occ`` in ``web-proxy`` relation

nextcloud/hooks/web_proxy-relation-joined

@@ -1,25 +1,20 @@
 #!/bin/bash
 
+. lib/common
+
 set -e
 
 DOMAIN=$(relation-get domain) || exit 1
 URL="$(relation-get url)" || exit 1
 PROTO="${URL%%://*}"
 
-occ_opts=(
-    ## necessary as nextcloud do not detect correctly those, and behind
-    ## a proxy, it will generate a lot of URL that are not detected
-    ## by means of ``ReverseProxyPass`` on apache for instance
+nextcloud:config:simple:add overwritehost "$DOMAIN" || {
+    err "Failed to set ${WHITE}overwritehost${NORMAL} to '$DOMAIN'."
+    exit 1
+}
 
-    config:system:set overwritehost --value="$DOMAIN" \;
-    config:system:set overwriteprotocol --value="$PROTO"
-)
-compose --no-relations --no-init occ "$MASTER_BASE_SERVICE_NAME" "${occ_opts[@]}" || {
-    err "Failure to execute these ${WHITE}occ${NORMAL} commands:"
-    echo " ${WHITE}$(printf ' %q' "${occ_opts[@]}")${NORMAL}" |
-        sed -r "s/\\;/$'n'/g" | prefix "  ${DARKGRAY}>${NORMAL} " >&2
-    echo " "
-    echo "  If the code of nextcloud is already there (command occ is found), but " >&2
-    echo "  the database is not yet created, this situation will arise." >&2
+nextcloud:config:simple:add overwriteprotocol "$PROTO" || {
+    err "Failed to set ${WHITE}overwriteprotocol${NORMAL} to '$PROTO'."
     exit 1
 }
+

nextcloud/lib/common

@@ -124,7 +124,50 @@ occ() {
             -v "$HOST_CHARM_STORE/${CHARM_REL_PATH#${CHARM_STORE}/}/src/occ.batch:/var/www/html/occ.batch" \
             -T --rm -u www-data "$SERVICE_NAME" /var/www/html/occ.batch "$@" | cat
 
-    return "${PIPESTATUS[0]}"
+    if [ "${PIPESTATUS[0]}" != 0 ]; then
+        err "Failure to execute these ${WHITE}occ${NORMAL} commands:"
+        printf '%s ' "$@" |
+            sed -r "s/\\;/\n/g" |
+            sed -r "s/^\s*(.*)\s*$/${WHITE}\1${NORMAL}/g" |
+            prefix "  ${DARKGRAY}>${NORMAL} " >&2
+        echo "" >&2
+        echo "" >&2
+        echo "  If the code of nextcloud is already there (command occ is found), but " >&2
+        echo "  the database is not yet created, this situation will arise." >&2
+        return "${PIPESTATUS[0]}"
+    fi
+
 }
 
 
+
+nextcloud:config:simple:add() {
+    local key="$1" value="$2"
+    create_occ_if_not_exists || return 1
+
+    if ![ -e "$CONFIGFILE" ]; then
+        err "Config file '$CONFIGFILE' does not exist."
+        return 1
+    fi
+
+    if [ -z "$value" ]; then
+        err "Value for '$key' is empty. Skipping."
+        return 1
+    fi
+    ## check for \ and ' in value and key
+    if [[ "$value" =~ [\\\'] ]]; then
+        err "Unsupported value for '$key' contains a backslash or a single quote."
+        return 1
+    fi
+    if [[ "$key" =~ [\\\'] ]]; then
+        err "Key '$key' contains a backslash or a single quote."
+        return 1
+    fi
+
+    if grep "^  '$key' => '" "$CONFIGFILE" >/dev/null; then
+        sed -ri "s/^(  '$key' => ')(.*)(',)$/\1${value}\3/g" "$CONFIGFILE"
+        return 0
+    fi
+    ## Add '$key' => 'value', to the end of the file, before the closing paren.
+    sed -ri "s/^(\);)$/  '$key' => '${value}',\n\1/g" "$CONFIGFILE"
+}