node-oc-transpo/octranspo.js

A Node.js library for the OC Transpo API

const request = require('request');

const consts = require('./consts');

const version = consts.version;
const baseUrl = consts.baseUrl;
const endUrls = consts.endUrls;
const errors = consts.errors;

class OCTranspo {

	constructor(secret) {
		this.appID = secret.appID;
		this.appKey = secret.appKey;
	}

    baseRequest(endUrl, options, callback) {
        request.post({
            url: `https://${baseUrl}/${version}/${endUrl}`,
            form: Object.assign({
                appID: this.appID,
                apiKey: this.appKey,
                format: "json"
            }, options)
        }, (err, res, body) => {
            if (err) {
                callback("Unable to connect to OC Transpo API.");
            } else {
                var json = JSON.parse(body);
                var errorCode = json[Object.keys(json)[0]]['Error'];
                if (errorCode) {
                    callback(JSON.stringify({
                        code: errorCode,
                        message: errors[errorCode]
                    }));
                } else {
                    callback(undefined, json);
                }
                
            }
        });        
    }

	getRouteSummaryForStop(stopNo, callback) {
        this.baseRequest(endUrls.getRouteSummaryForStop, {stopNo: stopNo}, (err, res) => {
            callback(err, res);
        });
	}

    getNextTripsForStop(stopNo, routeNo, callback) {
        this.baseRequest(endUrls.getNextTripsForStop, {stopNo: stopNo, routeNo:routeNo}, (err, res) => {
            callback(err, res);
        });
    }

    getNextTripsForStopAllRoutes(stopNo, callback) {
        this.baseRequest(endUrls.getNextTripsForStopAllRoutes, {stopNo: stopNo}, (err, res) => {
            callback(err, res);
        });
    }

    gtfs(table, options) {
        this.baseRequest(endUrls.gtfs, Object.assign({table: table}, options), (err, res) => {
            callback(err, res);
        });
    }

}

module.exports = {
    OCTranspo
}