feat(api): .NET 10 multi-tenant REST API

Full backend implementation: - Multi-tenant cafe/restaurant management (menus, orders, tables, staff) - POS order flow with ZarinPal and Snappfood payment integration - OTP authentication via Kavenegar SMS - QR digital menu with public discover/finder endpoints - Customer loyalty, coupons, CRM - PostgreSQL via EF Core, Redis for caching/sessions - Background jobs, webhook handlers - Full migration history Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-05-27 21:33:48 +03:30
parent 03376b3ea1
commit ef15fd6247
472 changed files with 120358 additions and 0 deletions
@@ -0,0 +1,120 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using Meezi.API.Models.Printing;
+using Meezi.Infrastructure.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace Meezi.API.Services;
+
+public record PosDeviceResult(bool Success, bool Skipped, string? ErrorCode, string? Detail = null)
+{
+    public static PosDeviceResult Ok() => new(true, false, null);
+    public static PosDeviceResult SkippedNotConfigured() => new(true, true, null);
+    public static PosDeviceResult Fail(string code, string? detail = null) => new(false, false, code, detail);
+}
+
+public interface IPosDeviceService
+{
+    Task<PosDeviceResult> SendPaymentRequestAsync(
+        string cafeId,
+        string branchId,
+        PosPaymentRequest request,
+        CancellationToken ct = default);
+}
+
+public class PosDeviceService : IPosDeviceService
+{
+    private const int DefaultPort = 8088;
+    private static readonly TimeSpan RequestTimeout = TimeSpan.FromSeconds(90);
+
+    private readonly AppDbContext _db;
+    private readonly IHttpClientFactory _httpClientFactory;
+    private readonly ILogger<PosDeviceService> _logger;
+
+    public PosDeviceService(
+        AppDbContext db,
+        IHttpClientFactory httpClientFactory,
+        ILogger<PosDeviceService> logger)
+    {
+        _db = db;
+        _httpClientFactory = httpClientFactory;
+        _logger = logger;
+    }
+
+    public async Task<PosDeviceResult> SendPaymentRequestAsync(
+        string cafeId,
+        string branchId,
+        PosPaymentRequest request,
+        CancellationToken ct = default)
+    {
+        if (request.Amount <= 0)
+            return PosDeviceResult.Fail("INVALID_AMOUNT");
+
+        var branch = await _db.Branches
+            .AsNoTracking()
+            .FirstOrDefaultAsync(b => b.Id == branchId && b.CafeId == cafeId, ct);
+
+        if (branch is null)
+            return PosDeviceResult.Fail("BRANCH_NOT_FOUND");
+
+        if (string.IsNullOrWhiteSpace(branch.PosDeviceIp))
+            return PosDeviceResult.SkippedNotConfigured();
+
+        var port = branch.PosDevicePort is > 0 and <= 65535
+            ? branch.PosDevicePort.Value
+            : DefaultPort;
+
+        var order = await _db.Orders
+            .AsNoTracking()
+            .FirstOrDefaultAsync(o => o.Id == request.OrderId && o.CafeId == cafeId, ct);
+
+        if (order is null)
+            return PosDeviceResult.Fail("ORDER_NOT_FOUND");
+
+        var payload = new
+        {
+            amount = (long)Math.Round(request.Amount, 0, MidpointRounding.AwayFromZero),
+            orderId = request.OrderId,
+            branchId,
+        };
+
+        var url = $"http://{branch.PosDeviceIp!.Trim()}:{port}/pay";
+
+        try
+        {
+            var client = _httpClientFactory.CreateClient(nameof(PosDeviceService));
+            client.Timeout = RequestTimeout;
+
+            using var response = await client.PostAsJsonAsync(url, payload, ct);
+
+            if (!response.IsSuccessStatusCode)
+            {
+                var body = await response.Content.ReadAsStringAsync(ct);
+                _logger.LogWarning(
+                    "POS device returned {Status} for {Url}: {Body}",
+                    (int)response.StatusCode,
+                    url,
+                    body.Length > 200 ? body[..200] : body);
+                return PosDeviceResult.Fail(
+                    "POS_DEVICE_REJECTED",
+                    $"HTTP {(int)response.StatusCode}");
+            }
+
+            return PosDeviceResult.Ok();
+        }
+        catch (TaskCanceledException) when (!ct.IsCancellationRequested)
+        {
+            return PosDeviceResult.Fail("POS_DEVICE_TIMEOUT");
+        }
+        catch (HttpRequestException ex)
+        {
+            _logger.LogWarning(ex, "POS device connection failed for {Url}", url);
+            return PosDeviceResult.Fail("POS_DEVICE_CONNECTION_FAILED", ex.Message);
+        }
+        catch (JsonException ex)
+        {
+            _logger.LogWarning(ex, "POS device response invalid for {Url}", url);
+            return PosDeviceResult.Fail("POS_DEVICE_CONNECTION_FAILED", ex.Message);
+        }
+    }
+}