Added journal reversals.

wolverine/a-frame-architecture/FinancialApi.Application/ReverseJournalHandler.cs

@@ -19,21 +19,16 @@ public static class ReverseJournalHandler
     public static async Task<ReversalData?> LoadAsync(ReverseJournalCommand cmd, IReversalQuery query)
     {
         var data = await query.GetReversalDataAsync(cmd.OriginalJournalId);
-        if (data == null)
-        {
-            throw new InvalidOperationException($"Journal Entry {cmd.OriginalJournalId} does not exist");
-        }
-
-        return data;
+        return data ?? throw new InvalidOperationException($"Journal Entry {cmd.OriginalJournalId} does not exist");
     }
 
     public static (
-        IStorageAction<JournalEntry> ReversalWrite,
-        IStorageAction<Account>[] AccountWrites,
+        IStorageAction<JournalEntry> JournalWrite,
+        UnitOfWork<Account> AccountWrites,
         JournalReversedEvent Event) Handle(ReverseJournalCommand cmd, ReversalData data)
     {
         var reversalJournal =
-            BalancedJournal.CreateReversal(data.OriginalJournalEntry, cmd.Reason, DateTimeOffset.UtcNow);
+            BalancedJournal.CreateReversal(data.OriginalJournalEntry, $"Reversal: {cmd.Reason}", DateTimeOffset.UtcNow);
         var accountState = data.AffectedAccounts.ToDictionary(a => a.Id);
 
         reversalJournal.Entry.Lines.ForEach(l =>
@@ -41,11 +36,14 @@ public static class ReverseJournalHandler
             var currentAccount = accountState[l.AccountId];
             accountState[l.AccountId] = currentAccount.ApplyPosting(l.Amount, l.Type);
         });
-
-        var accountWrites = accountState.Values.Select(a => (IStorageAction<Account>)Storage.Update(a)).ToArray();
+        var accountUow = new UnitOfWork<Account>();
+        foreach (var account in accountState.Values)
+        {
+            accountUow.Update(account);
+        }
         return (
             Storage.Insert(reversalJournal.Entry),
-            accountWrites,
+            accountUow,
             new JournalReversedEvent(cmd.OriginalJournalId, reversalJournal.Entry.Id)
         );
     }