langflow-chatbot/dist/lib/request-handler.js

Add a Langflow-powered chatbot to your website.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.handleRequest = handleRequest;
const url_1 = require("url");
const apiPaths_1 = require("../config/apiPaths");
const request_utils_1 = require("./request-utils");
// Import moved handlers
const configHandlers_1 = require("./configHandlers");
const flowsHandlers_1 = require("./langflow/flowsHandlers");
const historyHandlers_1 = require("./langflow/historyHandlers");
const chatHandlers_1 = require("./langflow/chatHandlers");
// This function will be called by LangflowProxyService, passing necessary dependencies
async function handleRequest(req, res, chatbotConfigurations, langflowClient, // Can be undefined if not initialized
langflowEndpointUrl, langflowApiKey, 
// Function to make direct API requests, passed from the main service
makeDirectLangflowApiRequest, proxyApiBasePath, preParsedBody, isBodyPreParsed) {
    const { method, url: rawUrl } = req;
    if (!rawUrl) {
        (0, request_utils_1.sendJsonError)(res, 400, "URL is required.");
        return;
    }
    const base = `http://${req.headers.host || 'localhost'}`;
    const parsedUrl = new url_1.URL(rawUrl, base);
    const pathname = parsedUrl.pathname;
    // Path prefixes are now direct matches as base path is stripped by caller
    const configRequestPathPrefix = apiPaths_1.PROFILE_CONFIG_ENDPOINT_PREFIX + '/';
    const chatRequestPathPrefix = apiPaths_1.PROFILE_CHAT_ENDPOINT_PREFIX + '/';
    if (method === 'GET' && pathname.startsWith(configRequestPathPrefix)) {
        const profileId = pathname.substring(configRequestPathPrefix.length);
        await (0, configHandlers_1.handleGetChatbotConfigRequest)(profileId, res, chatbotConfigurations, proxyApiBasePath);
    }
    else if (pathname.startsWith(chatRequestPathPrefix)) {
        const remainingPath = pathname.substring(chatRequestPathPrefix.length);
        const parts = remainingPath.split('/').filter(p => p.length > 0);
        const profileId = parts[0];
        if (!profileId) {
            (0, request_utils_1.sendJsonError)(res, 400, "profileId missing in chat URL.");
            return;
        }
        const profile = chatbotConfigurations.get(profileId);
        if (!profile) {
            (0, request_utils_1.sendJsonError)(res, 404, `Chatbot profile with profileId '${profileId}' not found.`);
            return;
        }
        const flowIdToUse = profile.server.flowId;
        if (method === 'POST' && parts.length === 1) {
            const serverAllowsStream = profile.server.enableStream !== false; // Access enableStream from profile.server, default to true
            await (0, chatHandlers_1.handleChatMessageRequest)(req, res, flowIdToUse, serverAllowsStream, langflowClient, preParsedBody, isBodyPreParsed);
        }
        else if (method === 'GET' && parts.length === 2 && parts[1] === 'history') {
            const sessionId = parsedUrl.searchParams.get('session_id');
            await (0, historyHandlers_1.handleGetChatHistoryRequest)(res, flowIdToUse, sessionId, makeDirectLangflowApiRequest);
        }
        else {
            (0, request_utils_1.sendJsonError)(res, 404, "Chat endpoint not found or method not supported for the path.");
        }
    }
    else if (method === 'GET' && pathname === apiPaths_1.PROXY_FLOWS_SUFFIX) {
        await (0, flowsHandlers_1.handleGetFlowsRequest)(req, res, makeDirectLangflowApiRequest);
    }
    else if (method === 'GET' && pathname === apiPaths_1.PROXY_PROFILES_SUFFIX) {
        await (0, configHandlers_1.handleListChatbotProfilesRequest)(req, res, chatbotConfigurations);
    }
    else {
        (0, request_utils_1.sendJsonError)(res, 404, "Endpoint not found or method not supported.");
    }
}