Developer message type introduced

google-vertexai-client/src/main/scala/io/cequence/openaiscala/vertexai/service/impl/package.scala

@@ -12,6 +12,7 @@ import io.cequence.openaiscala.domain.{
   AssistantMessage,
   BaseMessage,
   ChatRole,
+  DeveloperMessage,
   ImageURLContent,
   MessageSpec,
   SystemMessage,
@@ -98,7 +99,8 @@ package object impl {
     messages: Seq[BaseMessage]
   ): Option[Content] = {
     val contents = messages.collect {
-      case SystemMessage(content, _) => content
+      case SystemMessage(content, _)    => content
+      case DeveloperMessage(content, _) => content
       // legacy message type
       case MessageSpec(role, content, _) if role == ChatRole.System =>
         content

openai-core/src/main/scala/io/cequence/openaiscala/JsonFormats.scala

@@ -64,20 +64,19 @@ object JsonFormats {
 
   implicit lazy val chatRoleFormat: Format[ChatRole] = enumFormat[ChatRole](
     ChatRole.User,
+    ChatRole.Developer,
     ChatRole.System,
     ChatRole.Assistant,
     ChatRole.Function,
     ChatRole.Tool
   )
 
   implicit lazy val contentWrites: Writes[Content] = Writes[Content] {
-    _ match {
-      case c: TextContent =>
-        Json.obj("type" -> "text", "text" -> c.text)
+    case c: TextContent =>
+      Json.obj("type" -> "text", "text" -> c.text)
 
-      case c: ImageURLContent =>
-        Json.obj("type" -> "image_url", "image_url" -> Json.obj("url" -> c.url))
-    }
+    case c: ImageURLContent =>
+      Json.obj("type" -> "image_url", "image_url" -> Json.obj("url" -> c.url))
   }
 
   implicit lazy val contentReads: Reads[Content] = Reads[Content] { (json: JsValue) =>
@@ -93,6 +92,7 @@ object JsonFormats {
     Json.format[FunctionCallSpec]
 
   implicit val systemMessageFormat: Format[SystemMessage] = Json.format[SystemMessage]
+  implicit val developerMessageFormat: Format[DeveloperMessage] = Json.format[DeveloperMessage]
   implicit val userMessageFormat: Format[UserMessage] = Json.format[UserMessage]
   implicit val userSeqMessageFormat: Format[UserSeqMessage] = Json.format[UserSeqMessage]
 
@@ -292,6 +292,8 @@ object JsonFormats {
     val json = message match {
       case m: SystemMessage => toJson(m)
 
+      case m: DeveloperMessage => toJson(m)
+
       case m: UserMessage => toJson(m)
 
       case m: UserSeqMessage => Json.obj("content" -> toJson(m.content))

openai-core/src/main/scala/io/cequence/openaiscala/domain/BaseMessage.scala

@@ -20,6 +20,21 @@ final case class SystemMessage(
   def withName(name: String): SystemMessage = this.copy(name = Some(name))
 }
 
+// new system message for o1 models
+final case class DeveloperMessage(
+  // The contents of the message.
+  content: String,
+
+  // An optional name for the participant. Provides the model information to differentiate between participants of the same role.
+  // May contain a-z, A-Z, 0-9, and underscores, with a maximum length of 64 characters.
+  name: Option[String] = None
+) extends BaseMessage {
+  override val role = ChatRole.Developer
+  override val nameOpt = name
+
+  def withName(name: String): DeveloperMessage = this.copy(name = Some(name))
+}
+
 final case class UserMessage(
   // The contents of the message.
   content: String,

openai-core/src/main/scala/io/cequence/openaiscala/domain/ChatRole.scala

@@ -11,6 +11,7 @@ sealed trait ThreadAndRunRole
 object ChatRole {
   case object User extends ChatRole with ThreadAndRunRole
   case object System extends ChatRole
+  case object Developer extends ChatRole
   case object Assistant extends ChatRole with ThreadAndRunRole
   @Deprecated
   case object Function extends ChatRole

openai-examples/src/main/scala/io/cequence/openaiscala/examples/adapter/ChatCompletionInputAdapterForFireworksAI.scala

@@ -36,6 +36,7 @@ object ChatCompletionInputAdapterForFireworksAI
   private val handleSystemMessages = (messages: Seq[BaseMessage]) => {
     val nonSystemMessages = messages.map {
       case SystemMessage(content, _) => UserMessage(s"System: ${content}")
+      case DeveloperMessage(content, _) => UserMessage(s"System: ${content}")
       case x: BaseMessage            => x
     }