Get the contents of a Google Doc and process it with ArchieML. Exports the function retrieve to do this. Requires getting Google Auth credentials separately with a command line tool (e.g. https://www.npmjs.com/package/google-auth) and setting some environment variables for GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, GOOGLE_REFRESH_TOKEN and DOC_ID (…

doc.js

var archieml = require('archieml'),
    google = require('googleapis');

var drive = google.drive('v2');
var OAuth2 = google.auth.OAuth2;
var oauth2Client = new OAuth2(process.env.GOOGLE_CLIENT_ID, process.env.GOOGLE_CLIENT_SECRET, 'http://localhost');

var docId = process.env.DOC_ID;

var exportLinkCache = null,
    exportLinkLastRefresh = null;

oauth2Client.setCredentials({
    refresh_token: process.env.GOOGLE_REFRESH_TOKEN
});

google.options({
    auth: oauth2Client
});

function getExportLink(docId,cb) {
    if (exportLinkCache && exportLinkLastRefresh && exportLinkLastRefresh > (new Date().setHours(-24))) {
        cb(null,exportLinkCache);
        return;
    }

    drive.files.get({
        fileId: docId
    }, function(err, doc) {
        if (err) {
            cb(err);
            return;
        }

        exportLink = doc.exportLinks['text/plain'];

        exportLinkCache = exportLink;
        exportLinkLastRefresh = new Date();

        cb(null,exportLink);
    });
}

function getData(exportLink,cb) {
    oauth2Client.request({
        method: 'GET',
        uri: exportLink
    }, function(err, body) {
        if (err) {
            cb(err);
            return;
        }

        // remove Google Docs comments
        body = body.replace(/\[[a-z]{1,2}\]/g,'');

        var data = archieml.load(body);

        cb(null, data);
    });
}

function retrieve(cb) {
    getExportLink(docId,function (err,exportLink) {
        if (err) {
            cb(err);
            return;
        }

        getData(exportLink,cb);
    });
}

exports.retrieve = retrieve;