createPromptTemplate.ts•1.44 kB
/**
* Copyright (C) 2025 by Fonoster Inc (https://fonoster.com)
* http://github.com/fonoster/fonoster
*
* This file is part of Fonoster
*
* Licensed under the MIT License (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/MIT
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {
ChatPromptTemplate,
HumanMessagePromptTemplate,
MessagesPlaceholder,
SystemMessagePromptTemplate
} from "@langchain/core/prompts";
import { createSystemPrompt } from "./createSystemPrompt";
import { TelephonyContext } from "./types";
export function createPromptTemplate(params: {
firstMessage?: string;
systemPrompt: string;
telephonyContext: TelephonyContext;
}) {
const { firstMessage, systemPrompt, telephonyContext } = params;
return ChatPromptTemplate.fromMessages([
SystemMessagePromptTemplate.fromTemplate(
createSystemPrompt({
firstMessage,
systemPrompt,
telephonyContext
})
),
new MessagesPlaceholder("history"),
HumanMessagePromptTemplate.fromTemplate("{input}")
]);
}