Store Custom Roles (#4940)

BTCPayServer/Extensions/StoreExtensions.cs

@@ -1,11 +1,40 @@
 #nullable enable
 using System.Linq;
+using BTCPayServer.Client;
 using BTCPayServer.Data;
 
 namespace BTCPayServer
 {
     public static class StoreExtensions
     {
+        public static StoreRole? GetStoreRoleOfUser(this StoreData store, string userId)
+        {
+            return store.UserStores.FirstOrDefault(r => r.ApplicationUserId == userId)?.StoreRole;
+        }
+        
+        public static PermissionSet GetPermissionSet(this StoreRole storeRole, string storeId)
+        {
+            return new PermissionSet(storeRole.Permissions
+                .Select(s => Permission.TryCreatePermission(s, storeId, out var permission) ? permission : null)
+                .Where(s => s != null).ToArray());
+        }
+
+
+        public static PermissionSet GetPermissionSet(this StoreData store, string userId)
+        {
+           return  store.GetStoreRoleOfUser(userId)?.GetPermissionSet(store.Id)?? new PermissionSet();
+        }
+
+        public static bool HasPermission(this StoreData store, string userId, string permission)
+        {
+            return GetPermissionSet(store, userId).HasPermission(permission, store.Id);
+        }
+
+        public static bool HasPermission(this PermissionSet permissionSet, string permission, string storeId)
+        {
+            return permissionSet.Contains(permission, storeId);
+        }
+        
         public static DerivationSchemeSettings? GetDerivationSchemeSettings(this StoreData store, BTCPayNetworkProvider networkProvider, string cryptoCode)
         {
             var paymentMethod = store