Gumroad Sales Data "API"

gumroad-analytics-api.js

// There's no way to retrieve detailed sales info from Gumroad.com through
// their official API. 

// This bypasses that by posting a login form and then hitting an API only accessible
// via AJAX with a session cookie

// you just need USERNAME and PASSWORD set as environment variables where this is ran
var request = require('request');

module.exports = function (cb) {
    var jar = request.jar();
    request.get({
        url: "https://gumroad.com/analytics",
        jar: jar
    }, function (err, req, body) {
        var tokenTest = /\"authenticity_token\" type=\"hidden\" value=\"(\S+)\"/;
        var loginForm = {
            utf8: "✓",
            next: "",
            authenticity_token: tokenTest.exec(body)[1],
            "user[login]": process.env.USERNAME,
            "user[password]": process.env.PASSWORD
        };
        request.post({
            url: "https://gumroad.com/login",
            form: loginForm,
            jar: jar
        }, function (err, req, body) {
            var today = new Date();
            request.get({
                url: "https://gumroad.com/analytics/data/by_date",
                qs: {
                    // date started selling
                    start_time: (new Date(2013, 9, 6)).toString(),
                    end_time: today.toString()
                },
                json: true,
                jar: jar
            }, function (err, req, body) {
                cb(err, body)
            });
        });
    });
};