From 04d7675c2029bd77a010cc46404ad0f6352f03ed Mon Sep 17 00:00:00 2001
From: Kgothatso <kngako@ymail.com>
Date: Wed, 4 Dec 2019 21:47:33 +0200
Subject: [PATCH] Support posting signature to service

---
 lib/core/logic/authentication.js | 10 ++++++++--
 lib/core/logic/post-signature.js | 10 ++++++++++
 package.json                     |  1 +
 3 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 lib/core/logic/post-signature.js

diff --git a/lib/core/logic/authentication.js b/lib/core/logic/authentication.js
index 943fb02..44666fe 100644
--- a/lib/core/logic/authentication.js
+++ b/lib/core/logic/authentication.js
@@ -1,5 +1,6 @@
 const persistence = require("../persistence/persistence");
 const cryptoUtil = require("../cryptoUtil");
+const postSignature = require("./post-signature");
 
 module.exports.authenticate = function(challenge, authenticationRequest, argv) {
     persistence().LoadDB()
@@ -46,8 +47,13 @@ module.exports.authenticate = function(challenge, authenticationRequest, argv) {
         
                         var challengeDerivationPath = `${lock.extendedPublicKey.derivationPath}/${challenge.derivationPath.split("c/")[1]}`;
                         
-                        const signature = cryptoUtil.signMessage(walletXpriv, challengeDerivationPath, challenge.message)
-                        console.log("Signature: ", signature.toString('hex'));
+                        const signature = cryptoUtil.signMessage(walletXpriv, challengeDerivationPath, challenge.message).toString('hex');
+                        console.log("Signature: ", signature);
+
+                        postSignature.postSignature(authenticationRequest.responseEndpoint, {
+                            id: challenge.id,
+                            signature: signature
+                        })
                     } else {
                         console.error("Challenge not signed by registered service.");
                     }
diff --git a/lib/core/logic/post-signature.js b/lib/core/logic/post-signature.js
new file mode 100644
index 0000000..a83b6b4
--- /dev/null
+++ b/lib/core/logic/post-signature.js
@@ -0,0 +1,10 @@
+const needle = require('needle');
+module.exports.postSignature = function(endpoint, signature) {
+    needle('post', endpoint, signature, { json: true })
+        .then(response => {
+            console.log("Response: ", response.statusMessage);
+            console.log("Body: ", response.body);
+        }).catch(error => {
+            console.error("Failed to sign request: ", error);
+        })
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index dd0a14b..f1d128c 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "bip39": "^3.0.2",
     "config": "^3.2.4",
     "nanoid": "^2.1.7",
+    "needle": "^2.4.0",
     "sequelize": "^5.21.2",
     "sqlite3": "^4.1.0",
     "yargs": "^15.0.2"