make it compile with Scala 3

Author: bburdiliak

anthropic-client/src/main/scala/io/cequence/openaiscala/anthropic/JsonFormats.scala

@@ -64,43 +64,7 @@ trait JsonFormats {
       }
     }
 
-  implicit lazy val userMessageFormat: Format[UserMessage] = Json.format[UserMessage]
-  implicit lazy val userMessageContentFormat: Format[UserMessageContent] =
-    Json.format[UserMessageContent]
-  implicit lazy val assistantMessageFormat: Format[AssistantMessage] =
-    Json.format[AssistantMessage]
-  implicit lazy val assistantMessageContentFormat: Format[AssistantMessageContent] =
-    Json.format[AssistantMessageContent]
-
-  implicit lazy val textBlockFormat: Format[TextBlock] = Json.format[TextBlock]
-
-  implicit lazy val contentBlocksFormat: Format[ContentBlocks] = Json.format[ContentBlocks]
-
-  implicit lazy val textBlockReads: Reads[TextBlock] = {
-    implicit val config: JsonConfiguration = JsonConfiguration(SnakeCase)
-    Json.reads[TextBlock]
-  }
-
-  implicit lazy val textBlockWrites: Writes[TextBlock] = {
-    implicit val config: JsonConfiguration = JsonConfiguration(SnakeCase)
-    Json.writes[TextBlock]
-  }
-
-  implicit lazy val mediaBlockWrites: Writes[MediaBlock] =
-    (block: MediaBlock) =>
-      Json.obj(
-        "type" -> block.`type`,
-        "source" -> Json.obj(
-          "type" -> block.encoding,
-          "media_type" -> block.mediaType,
-          "data" -> block.data
-        )
-      )
-
-  private def cacheControlToJsObject(maybeCacheControl: Option[CacheControl]): JsObject =
-    maybeCacheControl.fold(Json.obj())(cc => writeJsObject(cc))
-
-  implicit lazy val contentBlockWrites: Writes[ContentBlockBase] = {
+  implicit lazy val contentBlockBaseWrites: Writes[ContentBlockBase] = {
     case ContentBlockBase(textBlock @ TextBlock(_), cacheControl) =>
       Json.obj("type" -> "text") ++
         Json.toJson(textBlock)(textBlockWrites).as[JsObject] ++
@@ -111,7 +75,7 @@ trait JsonFormats {
 
   }
 
-  implicit lazy val contentBlockReads: Reads[ContentBlockBase] =
+  implicit lazy val contentBlockBaseReads: Reads[ContentBlockBase] =
     (json: JsValue) => {
       (json \ "type").validate[String].flatMap {
         case "text" =>
@@ -138,6 +102,51 @@ trait JsonFormats {
       }
     }
 
+  implicit lazy val contentBlockBaseFormat: Format[ContentBlockBase] = Format(
+    contentBlockBaseReads,
+    contentBlockBaseWrites
+  )
+  implicit lazy val contentBlockBaseSeqFormat: Format[Seq[ContentBlockBase]] = Format(
+    Reads.seq(contentBlockBaseReads),
+    Writes.seq(contentBlockBaseWrites)
+  )
+
+  implicit lazy val userMessageFormat: Format[UserMessage] = Json.format[UserMessage]
+  implicit lazy val userMessageContentFormat: Format[UserMessageContent] =
+    Json.format[UserMessageContent]
+  implicit lazy val assistantMessageFormat: Format[AssistantMessage] =
+    Json.format[AssistantMessage]
+  implicit lazy val assistantMessageContentFormat: Format[AssistantMessageContent] =
+    Json.format[AssistantMessageContent]
+
+  implicit lazy val textBlockFormat: Format[TextBlock] = Json.format[TextBlock]
+
+  implicit lazy val contentBlocksFormat: Format[ContentBlocks] = Json.format[ContentBlocks]
+
+  implicit lazy val textBlockReads: Reads[TextBlock] = {
+    implicit val config: JsonConfiguration = JsonConfiguration(SnakeCase)
+    Json.reads[TextBlock]
+  }
+
+  implicit lazy val textBlockWrites: Writes[TextBlock] = {
+    implicit val config: JsonConfiguration = JsonConfiguration(SnakeCase)
+    Json.writes[TextBlock]
+  }
+
+  implicit lazy val mediaBlockWrites: Writes[MediaBlock] =
+    (block: MediaBlock) =>
+      Json.obj(
+        "type" -> block.`type`,
+        "source" -> Json.obj(
+          "type" -> block.encoding,
+          "media_type" -> block.mediaType,
+          "data" -> block.data
+        )
+      )
+
+  private def cacheControlToJsObject(maybeCacheControl: Option[CacheControl]): JsObject =
+    maybeCacheControl.fold(Json.obj())(cc => writeJsObject(cc))
+
   implicit lazy val contentReads: Reads[Content] = new Reads[Content] {
     def reads(json: JsValue): JsResult[Content] = json match {
       case JsString(str) => JsSuccess(SingleString(str))
@@ -151,7 +160,7 @@ trait JsonFormats {
       case SingleString(text, cacheControl) =>
         Json.obj("content" -> text) ++ cacheControlToJsObject(cacheControl)
       case ContentBlocks(blocks) =>
-        Json.obj("content" -> Json.toJson(blocks)(Writes.seq(contentBlockWrites)))
+        Json.obj("content" -> Json.toJson(blocks)(Writes.seq(contentBlockBaseWrites)))
     }
   }
 
@@ -164,7 +173,7 @@ trait JsonFormats {
       case UserMessageContent(content) =>
         Json.obj(
           "role" -> "user",
-          "content" -> content.map(Json.toJson(_)(contentBlockWrites))
+          "content" -> content.map(Json.toJson(_)(contentBlockBaseWrites))
         )
 
       case AssistantMessage(content, cacheControl) =>
@@ -174,7 +183,7 @@ trait JsonFormats {
       case AssistantMessageContent(content) =>
         Json.obj(
           "role" -> "assistant",
-          "content" -> content.map(Json.toJson(_)(contentBlockWrites))
+          "content" -> content.map(Json.toJson(_)(contentBlockBaseWrites))
         )
       // Add cases for other subclasses if necessary
     }

anthropic-client/src/main/scala/io/cequence/openaiscala/anthropic/service/impl/AnthropicServiceImpl.scala

@@ -100,13 +100,13 @@ private[service] trait AnthropicServiceImpl extends Anthropic {
           val blocks =
             Seq(Content.ContentBlockBase(Content.ContentBlock.TextBlock(text), cacheControl))
 
-          Json.toJson(blocks)(Writes.seq(contentBlockWrites))
+          Json.toJson(blocks)(Writes.seq(contentBlockBaseWrites))
         }
       case Content.ContentBlocks(blocks) =>
-        Json.toJson(blocks)(Writes.seq(contentBlockWrites))
+        Json.toJson(blocks)(Writes.seq(contentBlockBaseWrites))
       case Content.ContentBlockBase(content, cacheControl) =>
         val blocks = Seq(Content.ContentBlockBase(content, cacheControl))
-        Json.toJson(blocks)(Writes.seq(contentBlockWrites))
+        Json.toJson(blocks)(Writes.seq(contentBlockBaseWrites))
     }
 
     jsonBodyParams(