PIN-4557-fix: Fix escaping for mongodb regex filters

src/main/scala/it/pagopa/interop/purposeprocess/common/readmodel/ReadModelPurposeQueries.scala

@@ -143,8 +143,8 @@ object ReadModelPurposeQueries extends ReadModelQuery {
     val eServicesIdsFilter = mapToVarArgs(eServicesIds.map(Filters.eq("data.eserviceId", _)))(Filters.or)
     val consumersIdsFilter = mapToVarArgs(consumersIds.map(Filters.eq("data.consumerId", _)))(Filters.or)
     val titleFilter        =
-      if (exactMatchOnTitle) title.map(n => safeRegex("data.title", s"^$n$$", "i"))
-      else title.map(safeRegex("data.title", _, "i"))
+      if (exactMatchOnTitle) title.map(n => Filters.regex("data.title", s"^${escape(n)}$$", "i"))
+      else title.map(n => Filters.regex("data.title", escape(n), "i"))
     mapToVarArgs(
       eServicesIdsFilter.toList ++ consumersIdsFilter.toList ++ statesFilter.toList ++ titleFilter.toList // :+ permissionFilter
     )(Filters.and).getOrElse(Filters.empty())

src/main/scala/it/pagopa/interop/purposeprocess/common/readmodel/ReadModelQuery.scala

@@ -1,12 +1,7 @@
 package it.pagopa.interop.purposeprocess.common.readmodel
 
-import org.mongodb.scala.bson.conversions.Bson
-import org.mongodb.scala.model.Filters
-
 trait ReadModelQuery {
   def mapToVarArgs[A, B](l: Seq[A])(f: Seq[A] => B): Option[B] = Option.when(l.nonEmpty)(f(l))
 
   def escape(str: String): String = str.replaceAll("([.*+?^${}()|\\[\\]\\\\])", "\\\\$1")
-  def safeRegex(fieldName: String, pattern: String, options: String): Bson =
-    Filters.regex(fieldName, escape(pattern), options)
 }