Offload compile fix

extra/admin-api/Spacebar.UApi/Services/PermissionService.cs

@@ -1,3 +1,4 @@
+using System.Collections.Immutable;
 using Microsoft.EntityFrameworkCore;
 using Spacebar.Models.Db.Contexts;
 using Spacebar.Models.Generic.Constants;
@@ -8,11 +9,9 @@ public class PermissionService(SpacebarDbContext db) {
     /// <summary>
     ///     Asserts that user has all the relevant guild permissions
     /// </summary>
-    /// <param name="permission">Permissions to require</param>
     /// <param name="guildId">Guild ID</param>
     /// <param name="userId">Member ID</param>
-    /// <exception cref="InvalidOperationException">Has one or more missing permissions</exception>
-    public async Task AssertUserHasGuildPermission(Permissions permission, long guildId, long userId) {
+    public async Task<Permissions> GetUserGuildPermissions(long guildId, long userId) {
         var member = await db.Members
             .Include(x => x.Roles)
             .SingleAsync(x => x.Id == userId && x.GuildId == guildId);
@@ -26,16 +25,36 @@ public class PermissionService(SpacebarDbContext db) {
             permissions &= Permissions.ViewChannel | Permissions.ReadMessageHistory;
         }
 
+        return permissions;
+    }
+    
+    /// <summary>
+    ///     Asserts that user has all the relevant guild permissions
+    /// </summary>
+    /// <param name="permission">Permissions to require</param>
+    /// <param name="guildId">Guild ID</param>
+    /// <param name="userId">Member ID</param>
+    /// <exception cref="InvalidOperationException">Has one or more missing permissions</exception>
+    public async Task AssertUserHasGuildPermission(Permissions permission, long guildId, long userId) {
+        var permissions = await GetUserGuildPermissions(guildId, userId);
+
         if (!permissions.HasFlag(permission))
-            throw new PermissionException(Enum.GetValues<Permissions>().Where(p => !permissions.HasFlag(p) && permission.HasFlag(p)));
+            throw new PermissionException(Enum.GetValues<Permissions>().Where(p => !permissions.HasFlag(p) && permission.HasFlag(p)).ToList());
     }
 }
 
+/// <summary>
+///     Thrown when a user is missing a given permission
+/// </summary>
 public class PermissionException : Exception {
-    public IEnumerable<Permissions> MissingPermissions { get; }
+    /// <summary>
+    ///   The list of missing permissions
+    /// </summary>
+    public ImmutableList<Permissions> MissingPermissions { get; }
 
-    public PermissionException(IEnumerable<Permissions> missingPermissions) : base(
+    /// <inheritdoc />
+    public PermissionException(IReadOnlyCollection<Permissions> missingPermissions) : base(
         $"You do not have the required permissions to perform this action: {string.Join(", ", missingPermissions)}") {
-        MissingPermissions = missingPermissions;
+        MissingPermissions = missingPermissions.ToImmutableList();
     }
 }