bottender/dist/server/Server.js

A framework for building conversational user interfaces.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const getChannelBotAndRequestContext_1 = __importDefault(require("../shared/getChannelBotAndRequestContext"));
const getConsoleBot_1 = __importDefault(require("../shared/getConsoleBot"));
class Server {
    constructor({ useConsole = false } = {}) {
        this.useConsole = useConsole;
    }
    handleRequest(req, res) {
        res.statusCode = 200;
        return this.run(req, res).catch((err) => {
            console.error(err);
            res.statusCode = 500;
            res.end('Internal Server Error');
        });
    }
    sendResponse(res, response) {
        if (response) {
            Object.entries(response.headers || {}).forEach(([key, value]) => {
                res.setHeader(key, value);
            });
            res.statusCode = response.status || 200;
            if (response.body &&
                typeof response.body === 'object' &&
                !Buffer.isBuffer(response.body)) {
                res.setHeader('Content-Type', 'application/json; charset=utf-8');
                res.end(JSON.stringify(response.body));
            }
            else {
                res.end(response.body || '');
            }
        }
        else {
            res.statusCode = 200;
            res.end('');
        }
    }
    prepare() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.useConsole) {
                const bot = getConsoleBot_1.default();
                bot.createRuntime();
            }
        });
    }
    getRequestHandler() {
        return this.handleRequest.bind(this);
    }
    run(req, res) {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.useConsole) {
                return;
            }
            const { channelBot, requestContext } = getChannelBotAndRequestContext_1.default(req) || {};
            if (!channelBot || !requestContext) {
                return;
            }
            const bot = channelBot.bot;
            const result = yield bot.connector.preprocess(requestContext);
            const { shouldNext } = result;
            let { response } = result;
            if (!shouldNext) {
                this.sendResponse(res, response);
                return;
            }
            const requestHandler = bot.createRequestHandler();
            response = yield requestHandler(Object.assign(Object.assign({}, requestContext.query), requestContext.body), requestContext);
            this.sendResponse(res, response);
        });
    }
}
exports.default = Server;
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