adding flagship sdk and updating without_module example

Author: chadiii

example/backend/index.js

@@ -1,6 +1,7 @@
 const express = require('express')
 const app = express()
 const port = 8081
+const { Flagship } = require("@flagship.io/js-sdk");
 
 app.set('etag', false)
 
@@ -14,11 +15,31 @@ app.get('/with_module', (req, res) => {
 })
 
 app.get('/without_module', (req, res) => {
-    if (req.get('user-agent').includes("Chrome")) {
-        res.send("Chrome")
-    } else {
-        res.send("Firefox")
-    }
+
+    Flagship.start("c0n48jn5thv01k0ijmo0", "BsIK86oh7c12c9G7ce4Wm1yBlWeaMf3t1S0xyYzI");
+
+    const visitor_id = req.get('x-visitor-id')
+    const visitor_context = req.get('x-visitor-context')
+    const [visitorContextKey, visitorContextValue] = visitor_context.split(':');
+
+    const visitor = Flagship.newVisitor({
+        visitorId: visitor_id,
+        context: { [visitorContextKey]: visitorContextValue }
+    });
+
+    visitor.on("ready", (error) => {
+        if (error) {
+            res.status(500).send("Internal Error (Visitor)")
+            return;
+        }
+        const flagKey = visitor.getFlag("IsVIP", false)._key;
+        const flagValue = visitor.getFlag("IsVIP", false).getValue();
+        res.status(200).send(
+            `   Visitor id : ${visitor_id}
+                Visitor context : ${visitor_context}
+                Flags : ${flagKey}: ${flagValue}
+            `)
+    });
 })
 
 app.listen(port, () => {

example/backend/package.json

@@ -14,6 +14,7 @@
     "author": "",
     "license": "ISC",
     "dependencies": {
+        "@flagship.io/js-sdk": "^3.0.4",
         "express": "^4.17.2",
         "nodemon": "^2.0.15",
         "pm2": "^5.2.0"

example/config/nginx-conf

@@ -100,7 +100,10 @@ server {
 
 		add_header X-Proxy-Cache $upstream_cache_status;
 
-		proxy_set_header X-Flagship-Flags "noflag";
+		set $visitor_context browser:$browser_type;
+
+		proxy_set_header X-Visitor-Id $request_id;
+		proxy_set_header X-Visitor-Context $visitor_context;
 
 		default_type text/html;