myaiapp.java

myaiapp.java

///usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS org.wildfly.bom:wildfly-expansion:35.0.1.Final@pom
//DEPS org.wildfly.glow:wildfly-glow:1.3.2.Final
//DEPS jakarta.ws.rs:jakarta.ws.rs-api
//DEPS jakarta.enterprise:jakarta.enterprise.cdi-api
//DEPS dev.langchain4j:langchain4j:1.0.0-beta1
//GLOW --spaces=incubating

import dev.langchain4j.data.message.*;
import dev.langchain4j.model.chat.ChatLanguageModel;
import jakarta.enterprise.context.RequestScoped;
import jakarta.inject.*;
import jakarta.ws.rs.*;
import jakarta.ws.rs.core.*;

@ApplicationPath("/")
public class myaiapp extends Application {
    @Path("/chat")
    @RequestScoped
    public static class Chat {
        @Inject
        @Named(value = "ollama")
        ChatLanguageModel chatModel;

        @GET
        @Produces(MediaType.TEXT_HTML)
        public String chatWithAssistant(@DefaultValue("Orange") @QueryParam("word") String word) {
            try {
                return chatModel.chat(
                        SystemMessage
                                .from("""
                                           You are a teacher that explain to kids the origin of some words.
                                               Your response must be polite, use the same language as the question, and be relevant to the question.
                                               Your answer must be embedded in HTML.
                                        """),
                        UserMessage.from(String.format("What is the etymology of %s?", word)))
                        .aiMessage().text();
            } catch (Exception e) {
                return "My failure reason is:\n\n" + e.getMessage();
            }
        }
    }
}