Move insight storage to a plugin

plugins/InsightStorage.js

@@ -0,0 +1,60 @@
+var request = require('request');
+var cryptoUtil = require('../js/util/crypto');
+var querystring = require('querystring');
+var Identity = require('../js/models/Identity');
+
+function InsightStorage(config) {
+  this.type = 'remote-backup';
+  this.storeUrl = config.url || 'https://insight.is/api/email';
+  this.request = config.request || request;
+}
+
+InsightStorage.prototype.init = function () {};
+
+InsightStorage.prototype.retrieve = function(email, password, opts, callback) {
+  var key = cryptoUtil.kdf(password, email);
+  var secret = cryptoUtil.kdf(key, password);
+  var encodedEmail = encodeURIComponent(email);
+  var retrieveUrl = this.storeUrl + '/retrieve/' + encodedEmail;
+  this.request.get(retrieveUrl + '?' + querystring.encode({secret: secret}),
+    function(err, response, body) {
+      if (err) {
+        return callback('Connection error');
+      }
+      if (response.statusCode !== 200) {
+        return callback('Connection error');
+      }
+      var decryptedJson = cryptoUtil.decrypt(key, body);
+      if (!decryptedJson) {
+        return callback('Internal Error');
+      }
+      return Identity.importFromJson(decryptedJson, password, opts, callback);
+    }
+  );
+};
+
+InsightStorage.prototype.store = function(identity, opts, callback) {
+  var password = identity.profile.password;
+  var key = cryptoUtil.kdf(password, identity.profile.email);
+  var secret = cryptoUtil.kdf(key, password);
+  var record = cryptoUtil.encrypt(key, identity.exportAsJson());
+  var registerUrl = this.storeUrl + '/register';
+  this.request.post({
+    url: registerUrl,
+    body: querystring.encode({
+      email: identity.profile.email,
+      secret: secret,
+      record: record
+    })
+  }, function(err, response, body) {
+    if (err) {
+      return callback('Connection error');
+    }
+    if (response.statusCode !== 200) {
+      return callback('Unable to store data on insight');
+    }
+    return callback();
+  });
+};
+
+module.exports = InsightStorage;