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import OpenAI from "openai";
import { ChatGptAgent } from "./chatgpt/ChatGptAgent";
import { WrtnAgentCostAggregator } from "./internal/WrtnAgentCostAggregator";
import { WrtnAgentOperationComposer } from "./internal/WrtnAgentOperationComposer";
import { WrtnAgentPromptTransformer } from "./internal/WrtnAgentPromptTransformer";
import { __map_take } from "./internal/__map_take";
import { IWrtnAgentConfig } from "./structures/IWrtnAgentConfig";
import { IWrtnAgentContext } from "./structures/IWrtnAgentContext";
import { IWrtnAgentController } from "./structures/IWrtnAgentController";
import { IWrtnAgentEvent } from "./structures/IWrtnAgentEvent";
import { IWrtnAgentOperationCollection } from "./structures/IWrtnAgentOperationCollection";
import { IWrtnAgentOperationSelection } from "./structures/IWrtnAgentOperationSelection";
import { IWrtnAgentPrompt } from "./structures/IWrtnAgentPrompt";
import { IWrtnAgentProps } from "./structures/IWrtnAgentProps";
import { IWrtnAgentProvider } from "./structures/IWrtnAgentProvider";
import { IWrtnAgentTokenUsage } from "./structures/IWrtnAgentTokenUsage";
/**
* Nestia A.I. chatbot agent.
*
* `WrtnChatAgent` is a facade class for the super A.I. chatbot agent
* which performs the {@link converstate user's conversation function}
* with LLM (Large Language Model) function calling and manages the
* {@link getPromptHistories prompt histories}.
*
* To understand and compose the `WrtnAgent` class exactly, reference
* below types concentrating on the documentation comments please.
* Especially, you have to be careful about the {@link IWrtnAgentProps}
* type which is used in the {@link constructor} function.
*
* - Constructors
* - {@link IWrtnAgentProps}
* - {@link IWrtnAgentProvider}
* - {@link IWrtnAgentController}
* - {@link IWrtnAgentConfig}
* - {@link IWrtnAgentSystemPrompt}
* - Accessors
* - {@link IWrtnAgentOperation}
* - {@link IWrtnAgentPrompt}
* - {@link IWrtnAgentEvent}
* - {@link IWrtnAgentTokenUsage}
*
* @author Samchon
*/
export class WrtnAgent {
// THE OPERATIONS
private readonly operations_: IWrtnAgentOperationCollection;
// STACK
private readonly stack_: IWrtnAgentOperationSelection[];
private readonly prompt_histories_: IWrtnAgentPrompt[];
private readonly listeners_: Map<string, Set<Function>>;
// STATUS
private readonly token_usage_: IWrtnAgentTokenUsage;
private ready_: boolean;
private readonly agentExecutionPlan_: (
ctx: IWrtnAgentContext,
) => Promise<IWrtnAgentPrompt[]>;
/* -----------------------------------------------------------
CONSTRUCTOR
----------------------------------------------------------- */
/**
* Initializer constructor.
*
* @param props Properties to construct the agent
*/
public constructor(private readonly props: IWrtnAgentProps) {
// OPERATIONS
this.operations_ = WrtnAgentOperationComposer.compose({
controllers: props.controllers,
config: props.config,
});
// STATUS
this.stack_ = [];
this.listeners_ = new Map();
this.prompt_histories_ = (props.histories ?? []).map((input) =>
WrtnAgentPromptTransformer.transform({
operations: this.operations_.group,
input,
}),
);
// STATUS
this.token_usage_ = {
total: 0,
prompt: {
total: 0,
audio: 0,
cached: 0,
},
completion: {
total: 0,
accepted_prediction: 0,
audio: 0,
reasoning: 0,
rejected_prediction: 0,
},
};
this.ready_ = false;
this.agentExecutionPlan_ = props.agentExecutionPlan ?? ChatGptAgent.execute;
}
/* -----------------------------------------------------------
ACCESSORS
----------------------------------------------------------- */
/**
* Conversate with the A.I. chatbot.
*
* User talks to the A.I. chatbot with the content.
*
* When the user's conversation implies the A.I. chatbot to execute a
* function calling, the returned chat prompts will contain the
* function calling information like {@link IWrtnAgentPrompt.IExecute}.
*
* @param content The content to talk
* @returns List of newly created chat prompts
*/
public async conversate(content: string): Promise<IWrtnAgentPrompt[]> {
const prompt: IWrtnAgentPrompt.IText = {
type: "text",
role: "user",
<
C441
div>
text: content,
};
await this.dispatch(prompt);
const newbie: IWrtnAgentPrompt[] = await this.agentExecutionPlan_({
// APPLICATION
operations: this.operations_,
config: this.props.config,
// STATES
histories: this.prompt_histories_,
stack: this.stack_,
ready: () => this.ready_,
prompt,
// HANDLERS
dispatch: (event) => this.dispatch(event),
request: async (source, body) => {
// request information
const event: IWrtnAgentEvent.IRequest = {
type: "request",
source,
body: {
...body,
model: this.props.provider.model,
},
options: this.props.provider.options,
};
await this.dispatch(event);
// completion
const value: OpenAI.ChatCompletion =
await this.props.provider.api.chat.completions.create(
event.body,
event.options,
);
WrtnAgentCostAggregator.aggregate(this.token_usage_, value);
await this.dispatch({
type: "response",
source,
body: event.body,
options: event.options,
value,
});
return value;
},
initialize: async () => {
this.ready_ = true;
await this.dispatch({
type: "initialize",
});
},
});
this.prompt_histories_.push(prompt, ...newbie);
return [prompt, ...newbie];
}
/**
* Get configuration.
*/
public getConfig(): IWrtnAgentConfig | undefined {
return this.props.config;
}
/**
* Get LLM Provider.
*/
public getProvider(): IWrtnAgentProvider {
return this.props.provider;
}
/**
* Get controllers.
*
* Get list of controllers, which are the collection of functions that
* the "Super A.I. Chatbot" can execute.
*/
public getControllers(): ReadonlyArray<IWrtnAgentController> {
return this.props.controllers;
}
/**
* Get the chatbot's prompt histories.
*
* Get list of chat prompts that the chatbot has been conversated.
*
* @returns List of chat prompts
*/
public getPromptHistories(): IWrtnAgentPrompt[] {
return this.prompt_histories_;
}
/**
* Get token usage of the A.I. chatbot.
*
* Entire token usage of the A.I. chatbot during the conversating
* with the user by {@link conversate} method callings.
*
* @returns Cost of the A.I. chatbot
*/
public getTokenUsage(): IWrtnAgentTokenUsage {
return this.token_usage_;
}
/* -----------------------------------------------------------
EVENT HANDLERS
----------------------------------------------------------- */
/**
* Add an event listener.
*
* Add an event listener to be called whenever the event is emitted.
*
* @param type Type of event
* @param listener Callback function to be called whenever the event is emitted
*/
public on<Type extends IWrtnAgentEvent.Type>(
type: Type,
listener: (event: IWrtnAgentEvent.Mapper[Type]) => void | Promise<void>,
): void {
__map_take(this.listeners_, type, () => new Set()).add(listener);
}
/**
* Erase an event listener.
*
* Erase an event listener to stop calling the callback function.
*
* @param type Type of event
* @param listener Callback function to erase
*/
public off<Type extends IWrtnAgentEvent.Type>(
type: Type,
listener: (event: IWrtnAgentEvent.Mapper[Type]) => void | Promise<void>,
): void {
const set: Set<Function> | undefined = this.listeners_.get(type);
if (set) {
set.delete(listener);
if (set.size === 0) this.listeners_.delete(type);
}
}
private async dispatch<Event extends IWrtnAgentEvent>(
event: Event,
): Promise<void> {
const set: Set<Function> | undefined = this.listeners_.get(event.type);
if (set)
await Promise.all(
Array.from(set).map(async (listener) => {
try {
await listener(event);
} catch {}
}),
);
}
}