feat(tpos): add BFF data endpoints with Npgsql + Dapper

- Add Npgsql 9.0.3 and Dapper 2.1.66 packages to Server project
- Create BffDataController with read-only endpoints:
  GET /api/bff/shops
  GET /api/bff/shops/{shopId}/products
  GET /api/bff/shops/{shopId}/categories
  GET /api/bff/shops/{shopId}/tables
  GET /api/bff/shops/{shopId}/appointments
  GET /api/bff/shops/{shopId}/resources
- Register MVC controllers in Program.cs (AddControllers + MapControllers)

Co-authored-by: Velik <hongochai10@users.noreply.github.com>

apps/web-client-tpos-net/src/WebClientTpos.Server/Controllers/BffDataController.cs

@@ -0,0 +1,107 @@
+using Microsoft.AspNetCore.Mvc;
+using Npgsql;
+using Dapper;
+
+namespace WebClientTpos.Server.Controllers;
+
+[ApiController]
+[Route("api/bff")]
+public class BffDataController : ControllerBase
+{
+    private static string ConnStr(string db) =>
+        $"Host=localhost;Port=5432;Database={db};Username=goodgo;Password=goodgo_dev_2024";
+
+    [HttpGet("shops")]
+    public async Task<IActionResult> GetShops()
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("merchant_service"));
+        var shops = await conn.QueryAsync<dynamic>(
+            @"SELECT s.id, s.name, s.slug, s.description, s.phone, s.email,
+                     s.open_time, s.close_time, s.features_config,
+                     bc.name as category, st.name as status
+              FROM shops s
+              JOIN business_categories bc ON s.category_id = bc.id
+              JOIN shop_statuses st ON s.status_id = st.id
+              WHERE s.is_deleted = false
+              ORDER BY s.name");
+        return Ok(shops);
+    }
+
+    [HttpGet("shops/{shopId}/products")]
+    public async Task<IActionResult> GetProducts(Guid shopId)
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("catalog_service"));
+        var products = await conn.QueryAsync<dynamic>(
+            @"SELECT id, name, price, sku, description, image_url, is_active,
+                     attributes->>'category' as category,
+                     (attributes->>'duration')::int as duration_minutes
+              FROM products
+              WHERE shop_id = @ShopId AND is_active = true
+              ORDER BY name",
+            new { ShopId = shopId });
+        return Ok(products);
+    }
+
+    [HttpGet("shops/{shopId}/categories")]
+    public async Task<IActionResult> GetCategories(Guid shopId)
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("catalog_service"));
+        var categories = await conn.QueryAsync<dynamic>(
+            @"SELECT id, name, description, display_order
+              FROM categories
+              WHERE shop_id = @ShopId AND is_active = true
+              ORDER BY display_order",
+            new { ShopId = shopId });
+        return Ok(categories);
+    }
+
+    [HttpGet("shops/{shopId}/tables")]
+    public async Task<IActionResult> GetTables(Guid shopId)
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("fnb_engine"));
+        var tables = await conn.QueryAsync<dynamic>(
+            @"SELECT t.id, t.table_number, t.capacity, t.zone,
+                     CASE t.status_id
+                       WHEN 1 THEN 'available'
+                       WHEN 2 THEN 'occupied'
+                       WHEN 3 THEN 'reserved'
+                       WHEN 4 THEN 'cleaning'
+                     END as status,
+                     s.id as session_id, s.guest_count, s.started_at
+              FROM tables t
+              LEFT JOIN sessions s ON s.table_id = t.id AND s.status = 'Active'
+              WHERE t.shop_id = @ShopId
+              ORDER BY t.table_number",
+            new { ShopId = shopId });
+        return Ok(tables);
+    }
+
+    [HttpGet("shops/{shopId}/appointments")]
+    public async Task<IActionResult> GetAppointments(Guid shopId)
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("booking_service"));
+        var appointments = await conn.QueryAsync<dynamic>(
+            @"SELECT a.id, a.customer_id, a.staff_id, a.resource_id,
+                     a.service_id, a.start_time, a.end_time, a.status,
+                     r.name as resource_name
+              FROM appointments a
+              LEFT JOIN resources r ON a.resource_id = r.id
+              WHERE a.shop_id = @ShopId
+              ORDER BY a.start_time",
+            new { ShopId = shopId });
+        return Ok(appointments);
+    }
+
+    [HttpGet("shops/{shopId}/resources")]
+    public async Task<IActionResult> GetResources(Guid shopId)
+    {
+        await using var conn = new NpgsqlConnection(ConnStr("booking_service"));
+        var resources = await conn.QueryAsync<dynamic>(
+            @"SELECT id, name, resource_type, capacity, is_active
+              FROM resources
+              WHERE shop_id = @ShopId AND is_active = true
+              ORDER BY name",
+            new { ShopId = shopId });
+        return Ok(resources);
+    }
+}

apps/web-client-tpos-net/src/WebClientTpos.Server/Program.cs

@@ -41,6 +41,10 @@ builder.Services.AddCors(options =>
 // VI: Thêm health checks
 builder.Services.AddHealthChecks();
 
+// EN: Add MVC controllers for BFF data endpoints
+// VI: Thêm MVC controllers cho BFF data endpoints
+builder.Services.AddControllers();
+
 var app = builder.Build();
 
 // ═══════════════════════════════════════════════════════════════════════════════
@@ -116,6 +120,10 @@ app.Map("{culture:regex(^(en-US|vi-VN)$)}/{**slug}", async (string culture, Http
     return Results.Content(modifiedHtml, "text/html");
 });
 
+// EN: Map BFF API controllers
+// VI: Map BFF API controllers
+app.MapControllers();
+
 // EN: Fallback to index.html for SPA routing (default culture)
 // VI: Fallback đến index.html cho SPA routing (ngôn ngữ mặc định)
 app.MapFallbackToFile("index.html");

apps/web-client-tpos-net/src/WebClientTpos.Server/WebClientTpos.Server.csproj

@@ -7,8 +7,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.1.66" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.1" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="10.0.1" />
+    <PackageReference Include="Npgsql" Version="9.0.3" />
     <PackageReference Include="Yarp.ReverseProxy" Version="2.3.0" />
   </ItemGroup>