Add backend structure with Docker support and initial configuration files

Signed-off-by: Dmitrii <computer@yawaflua.tech>

Took 4 hours 25 minutes

backend/SpMega.Backend/Controllers/v1/TransactionsController.cs

@@ -0,0 +1,132 @@
+using System.Net.Http.Headers;
+using System.Text;
+using System.Text.Json;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SpMega.Backend.Persistent.Database;
+using SpMega.Backend.Persistent.Models.Transactions;
+using SpMega.Backend.Persistent.Models.Users;
+using SPWorldsApi;
+
+namespace SpMega.Backend.Controllers.v1;
+
+[Route("api/v1/transactions")]
+[ApiController]
+public class TransactionsController(AppDbContext context, ILogger<TransactionsController> logger, IConfiguration config) : ControllerBase
+{
+   private const string BASE_URL = "https://spworlds.ru/api/public";
+
+   [HttpGet("{billId}")]
+   public async Task<IActionResult> GetBill(string billId)
+   {
+      var transaction = await context.Transactions
+         .FirstOrDefaultAsync(t => t.ShortId == billId);
+
+      if (transaction == null)
+      {
+         if (billId == "00000000")
+         {
+            return Ok(new Transaction
+            {
+               Id = Guid.Empty,
+               ShortId = "00000000",
+               ReceiverName = "yawaflua",
+               ReceiverCardNumber = "00000",
+               Sender = new User
+               {
+                  Id = default,
+                  Username = "yawaflua",
+                  Token = "123",
+               },
+               SenderCardNumber = "010101",
+               Amount = 42,
+               Comment = "API FIRST",
+               TransactionDate = DateTime.UtcNow
+            });
+         }
+         return NotFound(new { error = "Transaction not found" });
+      }
+
+      return Ok(transaction);
+   }
+
+   [HttpPut()]
+   [Authorize]
+   public async Task<ActionResult<Transaction>> CreateTransaction([FromBody] CreateTransactionBody body)
+   {
+      var BearerToken = $"{body.cardToUse.Id}:{body.cardToUse.Token}";
+      string Base64BearerToken = Convert.ToBase64String(Encoding.UTF8.GetBytes(BearerToken));
+
+      
+      var shortId = Program.GenerateRandomString(8);
+      var transaction = new Transaction
+      {
+         ReceiverName = body.receiverName,
+         ShortId = shortId,
+         ReceiverCardNumber = body.receiverCard,
+         Sender = HttpContext.Items["@me"] as User,
+         SenderCardNumber = body.cardToUse.SpworldsID,
+         Amount = body.amount,
+         Comment = body.comment,
+      };
+      try
+      {
+         var uri = new Uri(new Uri(config["Url"] ?? "https://spmega.yawaflua.tech"), "/" + shortId);
+         var transitionInfo = new Dictionary<string, object>
+         {
+            { "receiver", body.receiverCard },
+            { "amount", body.amount },
+            { "comment", "Чек: "+ uri }
+         };
+
+         await SendRequest(endpoint: "transactions", body: transitionInfo, AuthHeader:new("Bearer", Base64BearerToken));
+
+      } catch (Exception exception)
+      {
+         logger.LogError(exception, "Error creating transaction");
+         return BadRequest(new { error = "Failed to create transaction" });
+      }
+      await context.AddAsync(transaction);
+      await context.SaveChangesAsync();
+
+      return Ok(new Transaction
+      {
+         Id = transaction.Id,
+         ReceiverName = transaction.ReceiverName,
+      });
+   }
+
+   [HttpGet()]
+   [Authorize]
+   public async Task<ActionResult<List<Transaction>>> GetAllTransactions()
+   {
+      return Ok(await context.Transactions.Where(k => k.Sender.Id == ((User)HttpContext.Items["@me"]).Id).ToListAsync());
+   }
+   
+   internal async Task<string> SendRequest(string endpoint, AuthenticationHeaderValue AuthHeader, HttpMethod method = null, object body = null)
+   {
+      method ??= body == null ? HttpMethod.Get : HttpMethod.Post;
+
+      HttpResponseMessage message;
+      var client = new System.Net.Http.HttpClient();
+
+      using (var requestMessage = new HttpRequestMessage(method, BASE_URL + endpoint))
+      {
+         requestMessage.Content = new StringContent(
+            JsonSerializer.Serialize(body),
+            Encoding.UTF8, "application/json"
+         );
+
+         requestMessage.Headers.Authorization = AuthHeader;
+
+         message = await client.SendAsync(requestMessage);
+
+      }
+
+      client.Dispose();
+
+      return await message.Content.ReadAsStringAsync();
+   }
+}
+public record CreateTransactionBody(Card cardToUse, string receiverCard, string receiverName, string comment, int amount);