Use no-op fts-client if disabled + push this flag to the webui

modules/fts-client/src/main/scala/docspell/ftsclient/FtsClient.scala

@@ -1,6 +1,9 @@
 package docspell.ftsclient
 
 import fs2.Stream
+import cats.implicits._
+import cats.effect._
+import org.log4s.getLogger
 import docspell.common._
 
 /** The fts client is the interface for docspell to a fulltext search
@@ -90,3 +93,29 @@ trait FtsClient[F[_]] {
   def clear(logger: Logger[F], collective: Ident): F[Unit]
 
 }
+
+object FtsClient {
+
+  def none[F[_]: Sync] =
+    new FtsClient[F] {
+      private[this] val logger = Logger.log4s[F](getLogger)
+
+      def initialize: F[Unit] =
+        logger.info("Full-text search is disabled!")
+
+      def search(q: FtsQuery): F[FtsResult] =
+        logger.warn("Full-text search is disabled!") *> FtsResult.empty.pure[F]
+
+      def updateIndex(logger: Logger[F], data: Stream[F, TextData]): F[Unit] =
+        logger.warn("Full-text search is disabled!")
+
+      def indexData(logger: Logger[F], data: Stream[F, TextData]): F[Unit] =
+        logger.warn("Full-text search is disabled!")
+
+      def clearAll(logger: Logger[F]): F[Unit] =
+        logger.warn("Full-text search is disabled!")
+
+      def clear(logger: Logger[F], collective: Ident): F[Unit] =
+        logger.warn("Full-text search is disabled!")
+    }
+}

modules/fts-client/src/main/scala/docspell/ftsclient/FtsQuery.scala

@@ -13,7 +13,7 @@ import docspell.common._
 final case class FtsQuery(
     q: String,
     collective: Ident,
-    items: List[Ident],
+    items: Set[Ident],
     limit: Int,
     offset: Int
 ) {

modules/fts-client/src/main/scala/docspell/ftsclient/FtsResult.scala

@@ -14,6 +14,9 @@ final case class FtsResult(
 
 object FtsResult {
 
+  val empty =
+    FtsResult(Duration.millis(0), 0, 0.0, Map.empty, Nil)
+
   sealed trait MatchData
   case class AttachmentData(attachId: Ident) extends MatchData
   case object ItemData                       extends MatchData