Adding pdf function as part of Scala DSL

examples/scala/src/main/scala/com/xebia/functional/xef/scala/auto/PDFDocument.scala

@@ -1,18 +1,23 @@
 package com.xebia.functional.xef.scala.auto
 
 import com.xebia.functional.xef.scala.auto.*
+import com.xebia.functional.xef.scala.auto.ScalaSerialDescriptorContext.given
 import io.circe.Decoder
 import io.circe.parser.decode
 
 import scala.io.StdIn.readLine
 
 private final case class AIResponse(answer: String) derives ScalaSerialDescriptor, Decoder
+
+val pdfUrl = "https://people.cs.ksu.edu/~schmidt/705a/Scala/Programming-in-Scala.pdf"
 @main def runPDFDocument: Unit =
   ai {
-    while (true) {
-      println("Enter your question: ")
-      val line = scala.io.StdIn.readLine()
-      val response = prompt[AIResponse](line)
-      println(s"${response.answer}\n---\n")
+    contextScope(pdf(resource = pdfUrl)) {
+      while (true) {
+        println("Enter your question: ")
+        val line = scala.io.StdIn.readLine()
+        val response = prompt[AIResponse](line)
+        println(s"${response.answer}\n---\n")
+      }
     }
   }

scala/build.gradle.kts

@@ -10,6 +10,8 @@ plugins {
 
 dependencies {
     implementation(projects.xefCore)
+    implementation(projects.xefTokenizer)
+    implementation(projects.xefPdf)
     implementation(projects.kotlinLoom)
     implementation(libs.kotlinx.coroutines)
     implementation(libs.circe.parser)

scala/src/main/scala/com/xebia/functional/xef/scala/auto/KotlinXSerializers.scala

@@ -32,3 +32,6 @@ object KotlinXSerializers:
 
   val char: KSerializer[Character] =
     serializer(kotlin.jvm.internal.CharCompanionObject.INSTANCE)
+
+  val unit: KSerializer[kotlin.Unit] =
+    serializer(kotlin.Unit.INSTANCE)

scala/src/main/scala/com/xebia/functional/xef/scala/auto/ScalaSerialDescriptor.scala

@@ -37,6 +37,7 @@ object ScalaSerialDescriptor:
     case _: (Int *: t) => KotlinXSerializers.int.getDescriptor :: getSerialDescriptor[t]
     case _: (Long *: t) => KotlinXSerializers.long.getDescriptor :: getSerialDescriptor[t]
     case _: (Short *: t) => KotlinXSerializers.short.getDescriptor :: getSerialDescriptor[t]
+    case _: (Unit *: t) => KotlinXSerializers.unit.getDescriptor :: getSerialDescriptor[t]
     case _: (h *: t) => summonInline[ScalaSerialDescriptor[h]].serialDescriptor :: getSerialDescriptor[t]
 
   inline final def derived[A](using inline m: Mirror.Of[A]): ScalaSerialDescriptor[A] = new ScalaSerialDescriptor[A]:

scala/src/main/scala/com/xebia/functional/xef/scala/auto/ScalaSerialDescriptorContext.scala

@@ -4,6 +4,7 @@ import kotlin.jvm.internal.Reflection
 import kotlin.reflect.KClass
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.builtins.BuiltinSerializersKt
+import kotlinx.serialization.descriptors.SerialDescriptor
 
 import scala.compiletime.summonInline
 import scala.reflect.ClassTag
@@ -60,3 +61,6 @@ object ScalaSerialDescriptorContext:
 
   given ScalaSerialDescriptor[String] = new ScalaSerialDescriptor[String]:
     def serialDescriptor = KotlinXSerializers.string.getDescriptor
+
+  given ScalaSerialDescriptor[Unit] = new ScalaSerialDescriptor[Unit]:
+    override def serialDescriptor: SerialDescriptor = KotlinXSerializers.unit.getDescriptor

scala/src/main/scala/com/xebia/functional/xef/scala/auto/package.scala

@@ -8,7 +8,12 @@ import io.circe.parser.decode
 import io.circe.{Decoder, Json}
 import io.circe.parser.parse
 import com.xebia.functional.xef.auto.{AIException, AIKt, AIScope as KtAIScope, Agent as KtAgent}
+import com.xebia.functional.xef.textsplitters.TextSplitter
+import com.xebia.functional.xef.textsplitters.TokenTextSplitterKt.TokenTextSplitter
+import com.xebia.functional.xef.pdf.PDFLoaderKt
+import com.xebia.functional.tokenizer.ModelType
 
+import java.io.File
 import scala.jdk.CollectionConverters.*
 
 package object auto {
@@ -73,4 +78,15 @@ package object auto {
         KtAgent.promptMessage(scope.kt, prompt, llmModel, user, echo, n, temperature, bringFromContext, minResponseTokens, _)
       ).asScala.toList
 
+  def pdf(
+      resource: String | File,
+      splitter: TextSplitter = TokenTextSplitter(ModelType.GPT_3_5_TURBO, 100, 50)
+  )(using scope: AIScope): List[String] =
+    LoomAdapter
+      .apply[java.util.List[String]](count =>
+        resource match
+          case url: String => PDFLoaderKt.pdf(url, splitter, count)
+          case file: File => PDFLoaderKt.pdf(file, splitter, count)
+      ).asScala.toList
+
 }