botnaut/src/utils/pathUtils.js

Facebook Messenger Chatbot Framework

/*
 * @author David Menger
 */
'use strict';

const path = require('path');
const pathToRegexp = require('path-to-regexp');

function makeAbsolute (action, contextPath = '') {
    const isAbsolute = !action || action.match(/^\//);
    return isAbsolute ? action : path.posix.join(contextPath, action);
}

function actionMatches (route, requestedPath) {
    const isAbsolute = requestedPath.match(/^\//);
    if (isAbsolute) {
        return pathToRegexp(route).exec(requestedPath);
    }
    const expectedPos = route.length - requestedPath.length;
    return route.lastIndexOf(requestedPath) === expectedPos && expectedPos !== -1;
}

function parseActionPayload (object) {
    let action;
    let data = {};
    if (typeof object === 'string') {
        action = object;
    } else if (typeof object.action === 'string') {
        action = object.action;
        data = object.data || data;
    } else {
        let payload = object.payload || object;
        let isObject = typeof payload === 'object' && payload !== null;

        if (typeof payload === 'string' && payload.match(/^\{.*\}$/)) {
            payload = JSON.parse(payload);
            isObject = true;
        }

        if (isObject) {
            data = payload.data || payload;
            action = payload.action;
        } else {
            action = payload;
        }
    }
    return { action, data };
}

module.exports = {
    makeAbsolute,
    actionMatches,
    parseActionPayload
};