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server.js
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server.js
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"use strict";
var express = require("express");
var app = express();
var session = require("express-session");
var fs = require("fs");
var request = require("request");
var url = require("url");
var Evernote = require("evernote").Evernote;
// Load config defaults from JSON file.
// Environment variables override defaults.
var config = function() {
var configFile;
try {
configFile = fs.readFileSync(__dirname + "/config.json", "utf-8");
} catch(e) {
// config.json does not exist.
// For using environment variables, keys must be loaded from config.json.template.
configFile = fs.readFileSync(__dirname + "/config.json.template", "utf-8");
}
var result = JSON.parse(configFile);
// override from environment variables if exists.
for (var i in result) {
var env = process.env[i.toUpperCase()]
if (typeof result[i] === "boolean") {
result[i] = env ? env === "true" : result[i]
} else {
result[i] = env || result[i];
}
}
console.log("Configuration");
console.log(result);
return result;
}();
function arrayBufferToBuffer(ab) {
var buffer = new Buffer(ab.byteLength);
var view = new Uint8Array(ab);
for (var i = 0; i < buffer.length; ++i) {
buffer[i] = view[i];
}
return buffer;
}
app.all("*", function (req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Methods", "POST, OPTIONS");
res.header("Access-Control-Allow-Headers", "Content-Type");
next();
});
app.use(session({
secret: "Z6DX34Xyut",
resave: false,
saveUninitialized: false
}));
app.get("/oauth", function(req, res) {
if (!req.query.callbackurl) {
return res.type("text/plain")
.status(400)
.send('The query "callbackurl" must be set.');
}
// Store callbackurl to the session
req.session.callbackurl = req.query.callbackurl;
var client = new Evernote.Client({
consumerKey: config.API_CONSUMER_KEY,
consumerSecret: config.API_CONSUMER_SECRET,
sandbox: config.SANDBOX
});
// When authorization sucess, server redirect to this url.
var oauthVerificationUrl = url.parse("");
oauthVerificationUrl.protocol = req.protocol;
oauthVerificationUrl.host = req.get("Host");
oauthVerificationUrl.pathname = "/oauthVerification";
client.getRequestToken(url.format(oauthVerificationUrl), function(error, oauthToken, oauthTokenSecret, results){
if (error) {
req.session.destroy();
return res.status(error.statusCode)
.send(error.data);
} else {
// store the tokens in the session
req.session.oauthToken = oauthToken;
req.session.oauthTokenSecret = oauthTokenSecret;
// redirect the user to authorize the token
res.redirect(client.getAuthorizeUrl(oauthToken));
}
});
});
app.get("/oauthVerification", function(req, res) {
var callbackurl = req.session.callbackurl;
if (!callbackurl) {
return res.type("text/plain")
.status(401)
.send('The session does not contain "callbackurl".');
}
var client = new Evernote.Client({
consumerKey: config.API_CONSUMER_KEY,
consumerSecret: config.API_CONSUMER_SECRET,
sandbox: config.SANDBOX
});
var oauthToken = req.session.oauthToken;
var oauthTokenSecret = req.session.oauthTokenSecret;
// Unused session should be destroyed ASAP.
req.session.destroy();
client.getAccessToken(
oauthToken,
oauthTokenSecret,
req.query.oauth_verifier,
function(error, oauthAccessToken, oauthAccessTokenSecret, results) {
if(error) {
return res.status(error.statusCode)
.send(error.data);
} else {
var redirectUrl = url.parse(callbackurl);
redirectUrl.query = {
"oauthAccessToken" : oauthAccessToken
};
res.redirect(url.format(redirectUrl));
}
});
});
app.post("/noteStore", function(req, res) {
var oauthAccessToken = req.query.oauthAccessToken;
if (!oauthAccessToken) {
return res.type("text/plain")
.status(400)
.send('The query "oauthAccessToken" must be set.');
}
var client = new Evernote.Client({
token: oauthAccessToken,
sandbox: config.SANDBOX
});
// UserStore for nodejs also has getNoteStoreUrl().
// However, we use thriftClient here to handle error correctly.
client.getUserStore().getThriftClient(function(error, thriftClient) {
thriftClient.getNoteStoreUrl(oauthAccessToken, function(error, noteStoreUrl) {
if (error) {
// Error occured.
// We must send back thrift response
var trans = thriftClient.input.getTransport();
for (var h in trans.headers) {
if (trans.headers.hasOwnProperty(h)) {
res.setHeader(h, trans.headers[h]);
}
}
return res.send(arrayBufferToBuffer(trans.received));
}
// pipe to NoteStoreUrl
req.pipe(request(noteStoreUrl)).pipe(res);
});
});
});
var port = config.PORT || 9999;
app.listen(port, null, function (err) {
console.log("Server started: http://localhost:" + port);
});