Some fixes to the queries and context records.

wolverine/a-frame-architecture/FinancialApi.Application.UnitTests/ApplyFeeHandlerTests.cs

@@ -1,8 +1,6 @@
-using System.Security.Cryptography;
-using FinancialApi.Application.Commands;
+using FinancialApi.Application.Commands;
 using FinancialApi.Application.Handlers;
 using FinancialApi.Application.Models;
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 using FluentAssertions;
 using FluentAssertions.Execution;

wolverine/a-frame-architecture/FinancialApi.Application/Handlers/ApplyFeeHandler.cs

@@ -2,7 +2,6 @@ using FinancialApi.Application.Commands;
 using FinancialApi.Application.Events;
 using FinancialApi.Application.Interfaces;
 using FinancialApi.Application.Models;
-using FinancialApi.Domain;
 using FinancialApi.Domain.Aggregates;
 using FinancialApi.Domain.Entities;
 using Wolverine.Persistence;

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

@@ -2,7 +2,6 @@ using FinancialApi.Application.Commands;
 using FinancialApi.Application.Events;
 using FinancialApi.Application.Interfaces;
 using FinancialApi.Application.Models;
-using FinancialApi.Domain;
 using FinancialApi.Domain.Aggregates;
 using FinancialApi.Domain.Entities;
 using Wolverine.Persistence;
@@ -17,8 +16,19 @@ public static class ReverseJournalHandler
         TimeProvider timeProvider
     )
     {
-        var data = await query.GetReversalDataAsync(cmd.OriginalJournalId);
-        return data ?? throw new InvalidOperationException($"Journal Entry {cmd.OriginalJournalId} does not exist");
+        var (journalEnty, accounts) = await query.GetReversalDataAsync(cmd.OriginalJournalId);
+        if (journalEnty == null)
+        {
+            throw new InvalidOperationException("Journal not found");
+        }
+
+        if (accounts == null)
+        {
+            throw new InvalidOperationException("Journal accounts not found");
+        }
+
+        return new JournalReversalContext(journalEnty, accounts, timeProvider.GetUtcNow()) ??
+               throw new InvalidOperationException($"Journal Entry {cmd.OriginalJournalId} does not exist");
     }
 
     public static ( IStorageAction<JournalEntry> JournalWrite, UnitOfWork<Account> AccountWrites, JournalReversedEvent

wolverine/a-frame-architecture/FinancialApi.Application/Handlers/TransferFundsHandler.cs

@@ -2,7 +2,6 @@ using FinancialApi.Application.Commands;
 using FinancialApi.Application.Events;
 using FinancialApi.Application.Interfaces;
 using FinancialApi.Application.Models;
-using FinancialApi.Domain;
 using FinancialApi.Domain.Aggregates;
 using FinancialApi.Domain.Entities;
 using Wolverine.Persistence;

wolverine/a-frame-architecture/FinancialApi.Application/Interfaces/IAccountQuery.cs

@@ -1,4 +1,3 @@
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 
 namespace FinancialApi.Application.Interfaces;

wolverine/a-frame-architecture/FinancialApi.Application/Interfaces/IReversalQuery.cs

@@ -1,10 +1,8 @@
-using FinancialApi.Application.Commands;
-using FinancialApi.Application.Handlers;
-using FinancialApi.Application.Models;
+using FinancialApi.Domain.Entities;
 
 namespace FinancialApi.Application.Interfaces;
 
 public interface IReversalQuery
 {
-    Task<JournalReversalContext?> GetReversalDataAsync(Guid journalEntryId);
+    Task<(JournalEntry?, List<Account>?)> GetReversalDataAsync(Guid journalEntryId);
 }

wolverine/a-frame-architecture/FinancialApi.Application/Models/FeeContext.cs

@@ -1,4 +1,3 @@
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 
 namespace FinancialApi.Application.Models;

wolverine/a-frame-architecture/FinancialApi.Application/Models/JournalReversalContext.cs

@@ -1,4 +1,3 @@
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 
 namespace FinancialApi.Application.Models;

wolverine/a-frame-architecture/FinancialApi.Application/Models/TransferContext.cs

@@ -1,4 +1,3 @@
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 
 namespace FinancialApi.Application.Models;

wolverine/a-frame-architecture/FinancialApi.Domain/FinancialResult.cs

@@ -0,0 +1,221 @@
+namespace FinancialApi.Domain;
+
+public interface IFinancialError
+{
+    int ErrorCode { get; }
+    string Message { get; }
+    Exception? Exception { get; }
+}
+
+public sealed class FinancialError : IFinancialError
+{
+    public FinancialError(int errorCode, string message, Exception? exception = null)
+    {
+        ArgumentOutOfRangeException.ThrowIfNegativeOrZero(errorCode);
+
+        ErrorCode = errorCode;
+        Message = message ?? throw new ArgumentNullException(nameof(message));
+        Exception = exception;
+    }
+
+    public int ErrorCode { get; }
+
+    public string Message { get; }
+
+    public Exception? Exception { get; }
+
+    public override string ToString() => $"Error: {ErrorCode} - {Message}{(Exception == null ? "" : $"\n{Exception}")}";
+}
+
+public sealed class FinancialResult<T>
+{
+    private readonly T? _resultValue;
+    private readonly FinancialError? _resultError;
+
+    public FinancialResult(T resultValue)
+    {
+        IsError = false;
+        _resultValue = resultValue;
+        _resultError = null;
+    }
+
+    public FinancialResult(FinancialError resultError)
+    {
+        IsError = true;
+        _resultValue = default;
+        _resultError = resultError;
+    }
+
+    public bool IsError { get; }
+
+    /// <summary>
+    /// Error indicator
+    /// </summary>
+    public bool IsSuccess => !IsError;
+
+    /// <summary>
+    /// Result Values
+    /// </summary>
+    public T? Value => _resultValue;
+
+    public FinancialError? Error => _resultError;
+
+    public static implicit operator FinancialResult<T>(T resultValue) => new(resultValue);
+
+    public static implicit operator FinancialResult<T>(FinancialError resultError) => new(resultError);
+
+    public static FinancialResult<T> Success(T successValue)
+    {
+        return new FinancialResult<T>(successValue);
+    }
+
+    public static FinancialResult<T> Failure(FinancialError failureValue)
+    {
+        return new FinancialResult<T>(failureValue);
+    }
+
+    public TResult Match<TResult>(
+        Func<T, TResult> success,
+        Func<FinancialError, TResult> failure,
+        Func<TResult> nullValue
+    )
+    {
+        return IsError switch
+        {
+            false when _resultValue == null => nullValue(),
+            true => failure(_resultError!),
+            _ => success(_resultValue)
+        };
+    }
+
+    public TResult Match<TResult>(Func<T, TResult> success, Func<FinancialError, TResult> failure)
+    {
+        return IsError switch
+        {
+            true => failure(_resultError!),
+            _ => success(_resultValue!)
+        };
+    }
+
+    public TResult? Match<TResult>(Func<T, TResult> success)
+    {
+        return IsError switch
+        {
+            true => default,
+            _ => success(_resultValue!)
+        };
+    }
+
+    public void Match(Action<T> success, Action<FinancialError> failure, Action nullValue)
+    {
+        switch (IsError)
+        {
+            case false when _resultValue == null:
+                nullValue.Invoke();
+                return;
+            case true:
+                failure.Invoke(_resultError!);
+                return;
+            default:
+                success(_resultValue);
+                break;
+        }
+    }
+
+    public void Match(Action<T> success, Action<FinancialError> failure)
+    {
+        switch (IsError)
+        {
+            case true:
+                failure.Invoke(_resultError!);
+                return;
+            default:
+                success(_resultValue!);
+                break;
+        }
+    }
+
+    public void Match(Action<T> success)
+    {
+        if (IsError)
+        {
+            return;
+        }
+
+        success(_resultValue!);
+    }
+
+    public async Task<TResult> MatchAsync<TResult>(
+        Func<T, Task<TResult>> success,
+        Func<FinancialError, Task<TResult>> failure,
+        Func<Task<TResult>> nullValue
+    )
+    {
+        return IsError switch
+        {
+            false when _resultValue == null => await nullValue(),
+            true => await failure(_resultError!),
+            _ => await success(_resultValue)
+        };
+    }
+
+    public async Task<TResult> MatchAsync<TResult>(
+        Func<T, Task<TResult>> success,
+        Func<FinancialError, Task<TResult>> failure
+    )
+    {
+        return IsError switch
+        {
+            true => await failure(_resultError!),
+            _ => await success(_resultValue!)
+        };
+    }
+
+    public async Task<TResult?> MatchAsync<TResult>(Func<T, Task<TResult>> success)
+    {
+        return IsError switch
+        {
+            true => default,
+            _ => await success(_resultValue!)
+        };
+    }
+
+    public async Task MatchAsync(Func<T, Task> success, Func<FinancialError, Task> failure, Func<Task> nullValue)
+    {
+        switch (IsError)
+        {
+            case false when _resultValue == null:
+                await nullValue.Invoke();
+                return;
+            case true:
+                await failure.Invoke(_resultError!);
+                return;
+            default:
+                await success(_resultValue!);
+                break;
+        }
+    }
+
+    public async Task MatchAsync(Func<T, Task> success, Func<FinancialError, Task> failure)
+    {
+        switch (IsError)
+        {
+            case true:
+                await failure.Invoke(_resultError!);
+                return;
+            default:
+                await success(_resultValue!);
+                break;
+        }
+    }
+
+    public async Task MatchAsync(Func<T, Task> success)
+    {
+        if (IsError)
+        {
+            return;
+        }
+
+        await success(_resultValue!);
+    }
+}

wolverine/a-frame-architecture/FinancialApi.Infrastructure/AccountDbContext.cs

@@ -1,5 +1,4 @@
-using FinancialApi.Domain;
-using FinancialApi.Domain.Entities;
+using FinancialApi.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
 
 namespace FinancialApi.Infrastructure;

wolverine/a-frame-architecture/FinancialApi.Infrastructure/AccountQuery.cs

@@ -1,5 +1,4 @@
 using FinancialApi.Application.Interfaces;
-using FinancialApi.Domain;
 using FinancialApi.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
 

wolverine/a-frame-architecture/FinancialApi.Infrastructure/ReversalQuery.cs

@@ -1,14 +1,12 @@
-using FinancialApi.Application.Commands;
-using FinancialApi.Application.Handlers;
 using FinancialApi.Application.Interfaces;
-using FinancialApi.Application.Models;
+using FinancialApi.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
 
 namespace FinancialApi.Infrastructure;
 
-public class ReversalQuery(AccountDbContext db, TimeProvider timeProvider) : IReversalQuery
+public class ReversalQuery(AccountDbContext db) : IReversalQuery
 {
-    public async Task<JournalReversalContext?> GetReversalDataAsync(Guid journalEntryId)
+    public async Task<(JournalEntry?, List<Account>?)> GetReversalDataAsync(Guid journalEntryId)
     {
         var entry = await db.JournalEntries.Include(x => x.Lines)
             .AsNoTracking()
@@ -16,7 +14,7 @@ public class ReversalQuery(AccountDbContext db, TimeProvider timeProvider) : IRe
 
         if (entry == null)
         {
-            return null;
+            return (null, null);
         }
 
         var accountIds = entry.Lines.Select(l => l.AccountId)
@@ -27,6 +25,6 @@ public class ReversalQuery(AccountDbContext db, TimeProvider timeProvider) : IRe
             .Where(a => accountIds.Contains(a.Id))
             .ToListAsync();
 
-        return new JournalReversalContext(entry, accounts, timeProvider.GetUtcNow());
+        return (entry, accounts);
     }
 }

wolverine/a-frame-architecture/a-frame-architecture.sln.DotSettings.user

@@ -1,8 +1,11 @@
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wolverine/a-frame-architecture/mise.toml

@@ -1,4 +1,4 @@
-[tools]
+[tools]
 dotnet = "10"
 
 [tasks.restore]
@@ -12,3 +12,9 @@ run = "dotnet build"
 
 [tasks.clean]
 run = "fd -I \"bin|obj\" -td -X rm -r && dotnet clean"
+
+[tasks.migrate]
+usage = '''
+arg "<name>" help="Migration Name"
+'''
+run = "dotnet ef migrations add \"${name?}\" --startup-project FinancialApi --project FinancialApi.Infrastructure"