Add sign command which can perform actions

lib/commands/sign.js

@@ -0,0 +1,57 @@
+const registrationLogic = require('../core/logic/register');
+const authenticationLogic = require('../core/logic/authentication');
+
+
+module.exports.description = "Sign message/challenge."
+
+module.exports.builder = (yargs) => {
+    return yargs
+        .usage(`Usage: $0 sign [options]`)
+        .help(false)
+        .version(false)
+        .option('challenge', {
+            describe: 'Challenge to sign',
+            type: 'string'
+        })
+        .demandOption(['challenge'])
+        .argv;
+}
+
+module.exports.handler = (argv) => {
+    console.log("Sign challenge.");
+    
+    const challengeArgument = argv["challenge"].js ||  argv["challenge"];
+
+    const challenge = JSON.parse(challengeArgument);
+    // Parse Action
+    try {
+        const request = JSON.parse(challenge.message);
+
+        if(request.action != undefined) {
+            switch(request.action) {
+                case "register":
+                    // Ask user if they want to register with service
+                    registrationLogic.registration(challenge, request);
+                    break;
+                case "authenticate":
+                    // Ask user if they want to authenticate with service
+                    authenticationLogic.authenticate(challenge, request, argv)
+                    break;
+                default:
+                    // Tell user that action is unsupported
+                    // ask if they want to sign regardless if they want to continue any way.
+                    break;
+            }
+        } else {
+            // No action provided... should just sign
+            console.log("No action required.");
+        }
+        // TODO: Validate lock-definition is of the correct format...
+        
+    } catch(e) {
+        // Should just be signed...
+        console.error("challenge.messsage isn't json Object")
+    }
+    
+        
+}