PhantomJS script for importing collection dumps to Parse.com

import-parse-class.js

/**
 * PhantomJS script for importing collection dumps to Parse.com.
 *
 * Usage: phantomjs --ssl-protocol any import-parse-class.js <configFile> <dumpFile> <collectionName>
 *
 * Parameters:
 *  - configFile: path of a JSON file with contents:
 *      {
 *          "email": <Parse user email>,
 *          "password": <Parse user password>,
 *          "app": <Parse app name (the URL "https://parse.com/apps/<app>" must be valid)
 *      }
 *  - dumpFile: collection dump path (see https://parse.com/docs/data#data-import)
 *  - collectionName: name of the collection to be created (cannot be an existing collection)
 *
 * Notes:
 *  - The "--ssl-protocol any" flag is required for PhantomJS to connect to Parse
 *  - This script was tested on Ubuntu 14.04 with PhantomJS 1.9
 *  - More details about why this script is needed are here:
 *    http://yanirseroussi.com/2015/01/15/automating-parse-com-bulk-data-imports/
 */

var system = require('system');
var fs = require('fs');
if (system.args.length < 4) {
    console.log('Usage: phantomjs --ssl-protocol any import-parse-class.js <configFile> <dumpFile> <collectionName>');
    phantom.exit();
}
var params = JSON.parse(fs.read(system.args[1]));
['email', 'password', 'app'].forEach(function (item) {
    if (!params.hasOwnProperty(item)) {
        console.log('Required config file property missing: ' + item);
        phantom.exit();
    }
});
params.dumpFile = system.args[2];
params.collectionName = system.args[3];

var page = require('webpage').create();

var loadInProgress = false;
page.onLoadFinished = function() {
    loadInProgress = false;
};

function checkPageLocation(expectedLocation) {
    return page.evaluate(function () { return window.location.toString() }) === expectedLocation;
}

var steps = [
    function loadLoginPage() {
        var loginPage = 'https://parse.com/user_session/new';
        page.open(loginPage);
        loadInProgress = true;
        return function () { return !loadInProgress && checkPageLocation(loginPage) };
    },
    function submitLoginForm() {
        page.evaluate(function (email, password) {
            $('#user_session_email').val(email);
            $('#user_session_password').val(password);
            $('#new_user_session').submit();
        }, params.email, params.password);
        return function () { return checkPageLocation('https://parse.com/apps') };
    },
    function loadCollectionPage() {
        var collectionPage = 'https://parse.com/apps/' + params.app + '/collections';
        page.open(collectionPage);
        loadInProgress = true;
        return function () {
            return !loadInProgress &&
                   checkPageLocation(collectionPage) &&
                   page.evaluate(function () { return $('.import').length === 1 })
        };
    },
    function clickImport() {
        page.evaluate(function () {
           $('.import').click();
        });
        return function () {
            return page.evaluate(function () {
                return $('form[class=import]').length === 1
            })
        };
    },
    function submitImportForm() {
        page.uploadFile('input[name=qqfile]', params.dumpFile);
        page.evaluate(function (className) {
            $('input[class=class_name]').val(className);
            $('form[class=import]').submit();
        }, params.collectionName);
        return function () {
            return page.evaluate(function (className) {
                return $('ul[class=class_list] a[data-name=' + className + ']').length === 1
            }, params.collectionName)
        }
    }
];

var stepIndex = 0;
var stepConditionFulfilled = function () { return true };

setInterval(function () {
    if (!stepConditionFulfilled()) {
        return;
    }
    console.log(page.evaluate(function () {
        return 'Current page: ' + window.location + ' (' + document.title + ')';
    }));

    var step = steps[stepIndex];
    if (step) {
        console.log('Running ' + step.name);
        stepConditionFulfilled = step();
        stepIndex++;
    } else {
        console.log('Done!');
        phantom.exit();
    }
}, 100);