Redesign landing page

Author: maartenba

src/Pages/DemoServerUtilities.cs

@@ -0,0 +1,74 @@
+using Duende.IdentityServer.Models;
+
+namespace Duende.IdentityServer.Demo.Pages;
+
+public static class DemoServerUtilities
+{
+    public static string HumanizeAllowedGrantTypes(ICollection<string> grantTypes)
+    {
+        if (grantTypes.SequenceEqual(GrantTypes.Implicit))
+            return "implicit";
+
+        if (grantTypes.SequenceEqual(GrantTypes.ImplicitAndClientCredentials))
+            return "implicit and client credentials";
+
+        if (grantTypes.SequenceEqual(GrantTypes.Code))
+            return "authorization code";
+
+        if (grantTypes.SequenceEqual(GrantTypes.CodeAndClientCredentials))
+            return "authorization code and client credentials";
+
+        if (grantTypes.SequenceEqual(GrantTypes.Hybrid))
+            return "hybrid";
+
+        if (grantTypes.SequenceEqual(GrantTypes.HybridAndClientCredentials))
+            return "hybrid and client credentials";
+
+        if (grantTypes.SequenceEqual(GrantTypes.ClientCredentials))
+            return "client credentials";
+
+        if (grantTypes.SequenceEqual(GrantTypes.ResourceOwnerPassword))
+            return "resource owner password";
+
+        if (grantTypes.SequenceEqual(GrantTypes.ResourceOwnerPasswordAndClientCredentials))
+            return "resource owner password and client credentials";
+
+        if (grantTypes.SequenceEqual(GrantTypes.DeviceFlow))
+            return "device flow";
+
+        if (grantTypes.SequenceEqual(GrantTypes.Ciba))
+            return "ciba";
+
+        return string.Join(" ", grantTypes);
+    }
+
+    public static string HumanizeLifetime(TimeSpan lifetime)
+    {
+        var components = new List<string>();
+        if (lifetime.TotalHours > 0)
+        {
+            components.Add(Math.Floor(lifetime.TotalHours) + "h");
+        }
+        if (Math.Floor(lifetime.TotalMinutes % 60) > 0)
+        {
+            components.Add(Math.Floor(lifetime.TotalMinutes % 60) + "m");
+        }
+        if (Math.Floor(lifetime.TotalSeconds % 60) > 0)
+        {
+            components.Add(Math.Floor(lifetime.TotalSeconds % 60) + "s");
+        }
+
+        return string.Join(" ", components);
+    }
+
+    public static string? HumanizeClientIdPrefix(string clientIdPrefix) =>
+        clientIdPrefix switch
+        {
+            "m2m" => "Machine-to-Machine",
+            "interactive" => "Interactive clients",
+            "native" => "Native clients",
+            "device" => "Device flow",
+            "login" => "Login",
+            _ => clientIdPrefix
+        };
+}