From 231d75060e6c352186cbf49233504dfe1e12bf11 Mon Sep 17 00:00:00 2001
From: anitarua <anita@momentohq.com>
Date: Mon, 11 Sep 2023 16:00:44 -0700
Subject: [PATCH] chore: add disposable token code snippet for dev docs

---
 examples/DocExampleApis/DocExampleApis.csproj |  2 +-
 examples/DocExampleApis/Program.cs            | 43 +++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/examples/DocExampleApis/DocExampleApis.csproj b/examples/DocExampleApis/DocExampleApis.csproj
index 19b3ed86..fe4d87f8 100644
--- a/examples/DocExampleApis/DocExampleApis.csproj
+++ b/examples/DocExampleApis/DocExampleApis.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Momento.Sdk" Version="1.19.0" />
+    <PackageReference Include="Momento.Sdk" Version="1.21.1" />
   </ItemGroup>
 
 </Project>
diff --git a/examples/DocExampleApis/Program.cs b/examples/DocExampleApis/Program.cs
index 87ca1d50..f2d9f19d 100644
--- a/examples/DocExampleApis/Program.cs
+++ b/examples/DocExampleApis/Program.cs
@@ -1,5 +1,6 @@
 using Momento.Sdk;
 using Momento.Sdk.Auth;
+using Momento.Sdk.Auth.AccessControl;
 using Momento.Sdk.Config;
 using Momento.Sdk.Responses;
 
@@ -12,6 +13,10 @@ public static async Task Main(string[] args)
         var client = new CacheClient(config,
             new EnvMomentoTokenProvider("MOMENTO_AUTH_TOKEN"),
             TimeSpan.FromSeconds(10));
+        IAuthClient authClient = new AuthClient(
+            AuthConfigurations.Default.Latest(), 
+            new EnvMomentoTokenProvider("MOMENTO_AUTH_TOKEN")
+        );
 
         await Example_API_CreateCache(client);
         await Example_API_FlushCache(client);
@@ -22,6 +27,8 @@ public static async Task Main(string[] args)
         await Example_API_Set(client);
         await Example_API_Get(client);
         await Example_API_Delete(client);
+
+        await Example_API_GenerateDisposableToken(authClient);
     }
 
     public static async Task Example_API_CreateCache(CacheClient cacheClient)
@@ -122,4 +129,40 @@ public static async Task Example_API_Delete(CacheClient cacheClient)
             throw new Exception($"An error occurred while attempting to delete key 'test-key' from cache 'test-cache': {error.ErrorCode}: {error}");
         }
     }
+
+    public static async Task Example_API_GenerateDisposableToken(IAuthClient authClient)
+    {
+        var scope = new DisposableTokenScope(Permissions: new List<DisposableTokenPermission>
+        {
+            new DisposableToken.CacheItemPermission(
+                CacheRole.ReadWrite,
+                CacheSelector.ByName("cache"),
+                CacheItemSelector.AllCacheItems
+            ),
+            new DisposableToken.CachePermission(
+                CacheRole.ReadOnly,
+                CacheSelector.ByName("topsecret")
+            ),
+            new DisposableToken.TopicPermission(
+                TopicRole.PublishSubscribe,
+                CacheSelector.ByName("cache"),
+                TopicSelector.ByName("example-topic")
+            )
+        });
+        var tokenResponse = await authClient.GenerateDisposableTokenAsync(
+            scope,
+            ExpiresIn.Minutes(5)
+        );
+
+        if (tokenResponse is GenerateDisposableTokenResponse.Success token)
+        {
+            Console.WriteLine("The generated disposable token is: " + token.AuthToken);
+            Console.WriteLine("The token endpoint is: " + token.Endpoint);
+            Console.WriteLine("The token expires at (epoch timestamp): " + token.ExpiresAt.Epoch());
+        }
+        else if (tokenResponse is GenerateDisposableTokenResponse.Error err)
+        {
+            Console.WriteLine("Error generating disposable token: " + err.Message);
+        }
+    }
 }