Feature/syn 766 (#129)

* Added a ‘AddTrailingSlashToRequestUri’ JavaScript policy

* Fixed case

* Renamed file so Git detects case change in filename

* And changinbg filename back to detect case change in filename

* Using var instead of let (EcmaScript 1.7)

* Moved the step for ‘javascript.AddTrailingSlashToRequestUri’ in to the ‘TargetEndpoint > PreFlow > Request’

* Updated “request.uri” to be “proxy.pathsuffix”

* Trying “target.url” instead of “proxy.pathsuffix”

* Moving the policy to the TargetEndpoint PostFlow Request

* Setting pathWithTrailingSlash

Author: adrianparr

proxies/live/apiproxy/policies/javascript.AddTrailingSlashToRequestUri.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<Javascript async="false" continueOnError="false" enabled="true" timeLimit="200" name="javascript.AddTrailingSlashToTargetPath">
+    <DisplayName>javascript.AddTrailingSlashToTargetPath</DisplayName>
+    <Properties/>
+    <ResourceURL>jsc://AddTrailingSlashToTargetPath.js</ResourceURL>
+</Javascript>

proxies/live/apiproxy/policies/javascript.AddTrailingSlashToTargetPath.xml

@@ -0,0 +1,8 @@
+var proxyPathSuffix = context.getVariable("proxy.pathsuffix");
+if (proxyPathSuffix.charAt(proxyPathSuffix.length - 1) === "/") {
+  context.setVariable("pathWithTrailingSlash", proxyPathSuffix);
+} else {
+  context.setVariable("pathWithTrailingSlash", proxyPathSuffix + "/");
+}
+
+context.setVariable("target.copy.pathsuffix", false);

proxies/live/apiproxy/resources/jsc/AddTrailingSlashToRequestUri.js

@@ -1,9 +1,6 @@
 <TargetEndpoint name="nhs-website-content-api-target">
   <PreFlow>
     <Request>
-      <Step>
-        <Name>javascript.AddTrailingSlashToRequestUri</Name>
-      </Step>
       <Step>
         <Name>VerifyAPIKey.FromHeader</Name>
       </Step>
@@ -35,6 +32,15 @@
       <Condition/>
     </Flow>
   </Flows>
+  <PostFlow>
+    <Request>
+      <Step>
+        <Name>javascript.AddTrailingSlashToTargetPath</Name>
+      </Step>
+    </Request>
+    <Response>
+    </Response>
+  </PostFlow>
   <FaultRules>
     <FaultRule name="api_key_invalid">
       <Condition>verifyapikey.VerifyAPIKey.FromHeader.failed</Condition>
@@ -44,7 +50,7 @@
     <SSLInfo>
       <Enabled>true</Enabled>
     </SSLInfo>
-    <Path>/content-api</Path>
+    <Path>/content-api/{pathWithTrailingSlash}</Path>
     <LoadBalancer>
       <Server name= "{{ NHS_CONTENT_API_TARGET_SERVER }}" />
     </LoadBalancer>