Make data to index more flexible and extensible

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

@@ -2,4 +2,55 @@ package docspell.ftsclient
 
 import docspell.common._
 
-final case class TextData(item: Ident, attachment: Ident, collective: Ident, text: String)
+sealed trait TextData {
+
+  def id: Ident
+
+  def item: Ident
+
+  def collective: Ident
+
+}
+
+object TextData {
+
+  final case class Attachment(
+      item: Ident,
+      attachId: Ident,
+      collective: Ident,
+      name: Option[String],
+      text: Option[String]
+  ) extends TextData {
+
+    val id = item / attachId
+
+  }
+
+  def attachment(
+      item: Ident,
+      attachId: Ident,
+      collective: Ident,
+      name: Option[String],
+      text: Option[String]
+  ): TextData =
+    Attachment(item, attachId, collective, name, text)
+
+  final case class Item(
+      item: Ident,
+      collective: Ident,
+      name: Option[String],
+      notes: Option[String]
+  ) extends TextData {
+
+    val id = Ident.unsafe("item") / item
+
+  }
+
+  def item(
+      item: Ident,
+      collective: Ident,
+      name: Option[String],
+      notes: Option[String]
+  ): TextData =
+    Item(item, collective, name, notes)
+}