Setup wallet and transaction retrieval, better swagger docs, and proper dtos

src/IO.Swagger/Repositories/TransactionRepository.cs

@@ -0,0 +1,35 @@
+using IO.Swagger.Models.db;
+using IO.Swagger.Services;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace IO.Swagger.Repositories
+{
+    public class TransactionRepository : ITransactionRepository
+    {
+        BankDbContext context;
+
+        public TransactionRepository(BankDbContext context)
+        {
+            this.context = context ?? throw new ArgumentNullException(nameof(context));
+        }
+
+        public async Task<List<Transaction>> GetTransactionsForUser(int userId)
+        {
+            var transactions = await context.Transactions.Where(t => t.ToUserId == userId || t.FromUserId == userId)
+                .Include(t => t.Currency)
+                .Include(t => t.FromUser)
+                .Include(t => t.ToUser)
+                .OrderByDescending(t => t.TransactionTime)
+                .ToListAsync();
+
+            foreach (var t in transactions)
+                if (t.ToUserId != t.FromUserId && t.FromUserId == userId)
+                    t.Amount *= -1;
+            return transactions;
+        }
+    }
+}