reader and queryengine update

apps/simple/package.json

+{
+  "name": "simple"
+}

packages/core/QueryEngine.ts

 import { Response } from "./Response";
 
 export class BaseQueryEngine {
-  query(q: string): Response {
+  async aquery(q: string): Promise<Response> {
     return new Response();
   }
-
-  aquery(q: string): Promise<Response> {
-    return new Promise<Response>((resolve, reject) => {
-      resolve(new Response());
-    });
-  }
 }

packages/core/Reader.ts

+import { Document } from "./Document";
+
+export interface BaseReader {
+  loadData(...args: any[]): Promise<Document>;
+}
+
+export class SimpleDirectoryReader implements BaseReader {
+  async loadData(options) {
+    return new Document("1", "");
+  }
+}
+
+export class PDFReader implements BaseReader {
+  async loadData(options) {
+    return new Document("1", "");
+  }
+}

packages/core/ServiceContext.ts

 interface ServiceContext {
   llmPredictor?: any;
-  promptHelper: any;
+  // promptHelper: any;
   embedModel: any;
   nodeParser: any;
   // llamaLogger: any;

packages/core/openai.ts

@@ -33,9 +33,14 @@ interface FunctionMessage {
 
 export type Message = ChatMessage | FunctionMessage;
 
+interface Function {
+  name: string;
+}
+
 export const getChatCompletions = async (
   messages: Message[],
-  model = "gpt-3.5-turbo"
+  model = "gpt-3.5-turbo",
+  functions: Function[] | null = null
 ) => {
   return await fetch(OPENAI_CHAT_COMPLETIONS_URL, {
     method: "POST",

packages/core/package.json

+{
+  "name": "core"
+}