Adds streaming to GetContents

src/Web/Common/ClaimsPrincipalExtensions.cs

@@ -2,8 +2,6 @@
 
 namespace Hutopy.Web.Common;
 
-public class Shared(string claimName) : Exception;
-
 public static class ClaimsPrincipalExtensions
 {
     public static Guid GetUserId(this ClaimsPrincipal claims)
@@ -30,7 +28,7 @@ public static class ClaimsPrincipalExtensions
     {
         var claim = claims.FindFirst(key);
 
-        if (claim is null) throw new Shared(key);
+        if (claim is null) throw new MissingClaimException(key);
 
         if (typeof(TValue) == typeof(Guid))
         {

src/Web/Common/GuidExtensions.cs

@@ -0,0 +1,30 @@
+using System.Buffers.Binary;
+using System.Security.Cryptography;
+
+namespace Hutopy.Web.Common;
+
+public static class GuidHelper
+{
+    // TODO: Delete when NET9 is release!
+    public static Guid GenerateUuidV7()
+    {
+        Span<byte> uuidv7 = stackalloc byte[16];
+        ulong unixTimeTicks = (ulong)DateTimeOffset.UtcNow.Subtract(DateTimeOffset.UnixEpoch).Ticks;
+        ulong unixTsMs = (unixTimeTicks & 0x0FFFFFFFFFFFF000) << 4;
+        ulong unixTsMsVer = unixTsMs | 0b0111UL << 12;
+        ulong randA = unixTimeTicks & 0x0000000000000FFF;
+        // merge "unix_ts_ms", "ver" and "rand_a"
+        ulong hi = unixTsMsVer | randA;
+        BinaryPrimitives.WriteUInt64BigEndian(uuidv7, hi);
+        // fill "rand_b" and "var"
+        RandomNumberGenerator.Fill(uuidv7[8..]);
+        // set "var"
+        byte varOctet = uuidv7[8];
+        varOctet = (byte)(varOctet & 0b00111111);
+        varOctet = (byte)(varOctet | 0b10111111);
+        uuidv7[8] = varOctet;
+        
+        var value = Convert.ToHexString(uuidv7);
+        return Guid.Parse(value);
+    }
+}

src/Web/Common/MissingClaimException.cs

@@ -0,0 +1,3 @@
+namespace Hutopy.Web.Common;
+
+public class MissingClaimException(string claimName) : Exception;