@copilotkit/runtime/dist/service-adapters/langchain/langchain-adapter.cjs

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require("reflect-metadata");
const require_runtime = require('../../_virtual/_rolldown/runtime.cjs');
const require_utils = require('./utils.cjs');
let _copilotkit_shared = require("@copilotkit/shared");

//#region src/service-adapters/langchain/langchain-adapter.ts
var LangChainAdapter = class {
	/**
	* To use LangChain as a backend, provide a handler function to the adapter with your custom LangChain logic.
	*/
	get name() {
		return "LangChainAdapter";
	}
	constructor(options) {
		this.options = options;
	}
	async process(request) {
		try {
			const { eventSource, model, actions, messages, runId, threadId: threadIdFromRequest } = request;
			const threadId = threadIdFromRequest ?? (0, _copilotkit_shared.randomUUID)();
			const result = await this.options.chainFn({
				messages: messages.map(require_utils.convertMessageToLangChainMessage),
				tools: actions.map(require_utils.convertActionInputToLangChainTool),
				model,
				threadId,
				runId
			});
			eventSource.stream(async (eventStream$) => {
				await require_utils.streamLangChainResponse({
					result,
					eventStream$
				});
			});
			return { threadId };
		} finally {
			const { awaitAllCallbacks } = require("@langchain/core/callbacks/promises");
			await awaitAllCallbacks();
		}
	}
};

//#endregion
exports.LangChainAdapter = LangChainAdapter;
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