feat: add mini ordering catalog and order APIs

src/Api/TakeoutSaaS.MiniApi/Controllers/CatalogController.cs

@@ -0,0 +1,113 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using TakeoutSaaS.Application.App.Mini;
+using TakeoutSaaS.Application.App.Mini.Contracts;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Results;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+using TakeoutSaaS.Shared.Web.Api;
+
+namespace TakeoutSaaS.MiniApi.Controllers;
+
+/// <summary>
+/// 小程序商品与门店查询接口。
+/// </summary>
+[ApiVersion("1.0")]
+[Route("api/mini/v{version:apiVersion}")]
+public sealed class CatalogController(IMiniAppService miniAppService, ITenantProvider tenantProvider) : BaseApiController
+{
+    /// <summary>
+    /// 获取当前租户下可用门店列表。
+    /// </summary>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>门店摘要列表。</returns>
+    [HttpGet("stores")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MiniStoreSummaryDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<MiniStoreSummaryDto>>> GetStoresAsync(CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetStoresAsync(tenantProvider.GetCurrentTenantId(), cancellationToken);
+        return ApiResponse<IReadOnlyList<MiniStoreSummaryDto>>.Ok(data);
+    }
+
+    /// <summary>
+    /// 获取指定门店在当前履约场景下的商品分类。
+    /// </summary>
+    /// <param name="storeId">门店编号。</param>
+    /// <param name="scene">履约场景。</param>
+    /// <param name="channel">访问渠道。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>分类列表。</returns>
+    [HttpGet("categories")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MiniCategoryDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<MiniCategoryDto>>> GetCategoriesAsync([FromQuery] string storeId, [FromQuery] string scene, [FromQuery] string channel, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetCategoriesAsync(tenantProvider.GetCurrentTenantId(), storeId, scene, channel, cancellationToken);
+        return ApiResponse<IReadOnlyList<MiniCategoryDto>>.Ok(data);
+    }
+
+    /// <summary>
+    /// 获取指定门店的菜单分组与商品列表。
+    /// </summary>
+    /// <param name="storeId">门店编号。</param>
+    /// <param name="scene">履约场景。</param>
+    /// <param name="channel">访问渠道。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>菜单分组列表。</returns>
+    [HttpGet("menus/{storeId}")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MiniMenuSectionDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<MiniMenuSectionDto>>> GetMenuAsync([FromRoute] string storeId, [FromQuery] string scene, [FromQuery] string channel, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetMenuAsync(tenantProvider.GetCurrentTenantId(), storeId, scene, channel, cancellationToken);
+        return ApiResponse<IReadOnlyList<MiniMenuSectionDto>>.Ok(data);
+    }
+
+    /// <summary>
+    /// 获取商品详情与可选规格信息。
+    /// </summary>
+    /// <param name="productId">商品编号。</param>
+    /// <param name="scene">履约场景。</param>
+    /// <param name="channel">访问渠道。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>商品详情。</returns>
+    [HttpGet("products/{productId}")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniProductDetailDto>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniProductDetailDto>> GetProductDetailAsync([FromRoute] string productId, [FromQuery] string scene, [FromQuery] string channel, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetProductDetailAsync(tenantProvider.GetCurrentTenantId(), productId, scene, channel, cancellationToken);
+        return data == null ? ApiResponse<MiniProductDetailDto>.Error(ErrorCodes.NotFound, "商品不存在") : ApiResponse<MiniProductDetailDto>.Ok(data);
+    }
+
+    /// <summary>
+    /// 试算购物车金额。
+    /// </summary>
+    /// <param name="request">试算请求。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>金额试算结果。</returns>
+    [HttpPost("products/price-estimate")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniPriceEstimateResponse>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniPriceEstimateResponse>> EstimatePriceAsync([FromBody] MiniPriceEstimateRequest request, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.EstimatePriceAsync(tenantProvider.GetCurrentTenantId(), request, cancellationToken);
+        return ApiResponse<MiniPriceEstimateResponse>.Ok(data);
+    }
+
+    /// <summary>
+    /// 下单前校验商品与价格是否有效。
+    /// </summary>
+    /// <param name="request">结算校验请求。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>结算校验结果。</returns>
+    [HttpPost("products/checkout-validate")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniCheckoutValidationResponse>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniCheckoutValidationResponse>> CheckoutValidateAsync([FromBody] MiniCheckoutValidationRequest request, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.ValidateCheckoutAsync(tenantProvider.GetCurrentTenantId(), request, cancellationToken);
+        return ApiResponse<MiniCheckoutValidationResponse>.Ok(data);
+    }
+}

src/Api/TakeoutSaaS.MiniApi/Controllers/OrdersController.cs

@@ -0,0 +1,87 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using TakeoutSaaS.Application.App.Mini;
+using TakeoutSaaS.Application.App.Mini.Contracts;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Results;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+using TakeoutSaaS.Shared.Web.Api;
+
+namespace TakeoutSaaS.MiniApi.Controllers;
+
+/// <summary>
+/// 小程序订单接口。
+/// </summary>
+[ApiVersion("1.0")]
+[Route("api/mini/v{version:apiVersion}/orders")]
+public sealed class OrdersController(IMiniAppService miniAppService, ITenantProvider tenantProvider) : BaseApiController
+{
+    /// <summary>
+    /// 获取当前顾客的订单列表。
+    /// </summary>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>订单摘要列表。</returns>
+    [HttpGet]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MiniOrderSummaryDto>>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<IReadOnlyList<MiniOrderSummaryDto>>> GetOrdersAsync(CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetOrdersAsync(tenantProvider.GetCurrentTenantId(), ResolveCustomerPhone(), cancellationToken);
+        return ApiResponse<IReadOnlyList<MiniOrderSummaryDto>>.Ok(data);
+    }
+
+    /// <summary>
+    /// 获取指定订单详情。
+    /// </summary>
+    /// <param name="orderId">订单编号。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>订单详情。</returns>
+    [HttpGet("{orderId}")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniOrderDetailDto>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniOrderDetailDto>> GetOrderDetailAsync([FromRoute] string orderId, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.GetOrderDetailAsync(tenantProvider.GetCurrentTenantId(), orderId, ResolveCustomerPhone(), cancellationToken);
+        return data == null ? ApiResponse<MiniOrderDetailDto>.Error(ErrorCodes.NotFound, "订单不存在") : ApiResponse<MiniOrderDetailDto>.Ok(data);
+    }
+
+    /// <summary>
+    /// 创建订单。
+    /// </summary>
+    /// <param name="request">下单请求。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>创建结果。</returns>
+    [HttpPost]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniCreateOrderResponse>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniCreateOrderResponse>> CreateOrderAsync([FromBody] MiniCreateOrderRequest request, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.CreateOrderAsync(tenantProvider.GetCurrentTenantId(), ResolveCustomerName(), ResolveCustomerPhone(), request, cancellationToken);
+        return ApiResponse<MiniCreateOrderResponse>.Ok(data);
+    }
+
+    /// <summary>
+    /// 模拟支付指定订单。
+    /// </summary>
+    /// <param name="orderId">订单编号。</param>
+    /// <param name="cancellationToken">请求取消令牌。</param>
+    /// <returns>模拟支付结果。</returns>
+    [HttpPost("{orderId}/mock-pay")]
+    [AllowAnonymous]
+    [ProducesResponseType(typeof(ApiResponse<MiniMockPayResponse>), StatusCodes.Status200OK)]
+    public async Task<ApiResponse<MiniMockPayResponse>> MockPayAsync([FromRoute] string orderId, CancellationToken cancellationToken)
+    {
+        var data = await miniAppService.MockPayAsync(tenantProvider.GetCurrentTenantId(), orderId, ResolveCustomerPhone(), cancellationToken);
+        return ApiResponse<MiniMockPayResponse>.Ok(data);
+    }
+
+    private string ResolveCustomerPhone()
+    {
+        return Request.Headers.TryGetValue("X-Mini-Customer-Phone", out var phone) ? phone.FirstOrDefault()?.Trim() ?? string.Empty : string.Empty;
+    }
+
+    private string ResolveCustomerName()
+    {
+        return Request.Headers.TryGetValue("X-Mini-Customer-Name", out var name) ? name.FirstOrDefault()?.Trim() ?? string.Empty : string.Empty;
+    }
+}

src/Api/TakeoutSaaS.MiniApi/appsettings.Development.json

@@ -1,9 +1,17 @@
 {
-  "Cors": {
+  "Database": {
-    "Mini": []
+    "DataSources": {
+      "AppDatabase": {
+        "Write": "Host=120.53.222.17;Port=5432;Database=takeout_app_db;Username=app_user;Password=AppUser112233;Pooling=true;Minimum Pool Size=5;Maximum Pool Size=50",
+        "Reads": [
+          "Host=120.53.222.17;Port=5432;Database=takeout_app_db;Username=app_user;Password=AppUser112233;Pooling=true;Minimum Pool Size=5;Maximum Pool Size=50"
+        ],
+        "CommandTimeoutSeconds": 30,
+        "MaxRetryCount": 3,
+        "MaxRetryDelaySeconds": 5
+      }
+    }
   },
-  "Otel": {
+  "Cors": { "Mini": [] },
-    "Endpoint": "",
+  "Otel": { "Endpoint": "", "UseConsoleExporter": true }
-    "UseConsoleExporter": true
-  }
 }

src/Api/TakeoutSaaS.MiniApi/appsettings.Production.json

@@ -1,9 +1,17 @@
 {
-  "Cors": {
+  "Database": {
-    "Mini": []
+    "DataSources": {
+      "AppDatabase": {
+        "Write": "Host=120.53.222.17;Port=5432;Database=takeout_app_db;Username=app_user;Password=AppUser112233;Pooling=true;Minimum Pool Size=5;Maximum Pool Size=50",
+        "Reads": [
+          "Host=120.53.222.17;Port=5432;Database=takeout_app_db;Username=app_user;Password=AppUser112233;Pooling=true;Minimum Pool Size=5;Maximum Pool Size=50"
+        ],
+        "CommandTimeoutSeconds": 30,
+        "MaxRetryCount": 3,
+        "MaxRetryDelaySeconds": 5
+      }
+    }
   },
-  "Otel": {
+  "Cors": { "Mini": [] },
-    "Endpoint": "",
+  "Otel": { "Endpoint": "", "UseConsoleExporter": false }
-    "UseConsoleExporter": false
-  }
 }

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniCategoryDto.cs

@@ -0,0 +1,12 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 分类摘要。
+/// </summary>
+public sealed class MiniCategoryDto
+{
+    public string Id { get; init; } = string.Empty;
+    public string Name { get; init; } = string.Empty;
+    public int Sort { get; init; }
+    public int ProductCount { get; init; }
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniCheckoutValidationRequest.cs

@@ -0,0 +1,12 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 结算校验请求。
+/// </summary>
+public sealed class MiniCheckoutValidationRequest
+{
+    public string StoreId { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public string Channel { get; init; } = string.Empty;
+    public IReadOnlyList<MiniOrderLineInput> Items { get; init; } = [];
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniCheckoutValidationResponse.cs

@@ -0,0 +1,10 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 结算校验结果。
+/// </summary>
+public sealed class MiniCheckoutValidationResponse
+{
+    public bool Valid { get; init; }
+    public string Message { get; init; } = string.Empty;
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniCreateOrderRequest.cs

@@ -0,0 +1,14 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 创建订单请求。
+/// </summary>
+public sealed class MiniCreateOrderRequest
+{
+    public string StoreId { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public string Channel { get; init; } = string.Empty;
+    public string? Remark { get; init; }
+    public string? TableNo { get; init; }
+    public IReadOnlyList<MiniOrderLineInput> Items { get; init; } = [];
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniCreateOrderResponse.cs

@@ -0,0 +1,15 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 创建订单结果。
+/// </summary>
+public sealed class MiniCreateOrderResponse
+{
+    public string OrderId { get; init; } = string.Empty;
+    public string OrderNo { get; init; } = string.Empty;
+    public string StatusText { get; init; } = string.Empty;
+    public string PaymentStatusText { get; init; } = string.Empty;
+    public decimal PayableAmount { get; init; }
+    public string PayableAmountText { get; init; } = "0.00";
+    public bool MockPayAvailable { get; init; }
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniMenuSectionDto.cs

@@ -0,0 +1,30 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 菜单分组。
+/// </summary>
+public sealed class MiniMenuSectionDto
+{
+    public string CategoryId { get; init; } = string.Empty;
+    public string CategoryName { get; init; } = string.Empty;
+    public IReadOnlyList<MiniMenuProductDto> Products { get; init; } = [];
+
+    /// <summary>
+    /// 菜单商品卡片。
+    /// </summary>
+    public sealed class MiniMenuProductDto
+    {
+        public string Id { get; init; } = string.Empty;
+        public string Name { get; init; } = string.Empty;
+        public string Description { get; init; } = string.Empty;
+        public string CoverImageUrl { get; init; } = string.Empty;
+        public decimal Price { get; init; }
+        public string PriceText { get; init; } = "0.00";
+        public decimal? OriginalPrice { get; init; }
+        public string? OriginalPriceText { get; init; }
+        public string SalesText { get; init; } = string.Empty;
+        public IReadOnlyList<string> TagTexts { get; init; } = [];
+        public bool SoldOut { get; init; }
+        public bool HasOptions { get; init; }
+    }
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniMockPayResponse.cs

@@ -0,0 +1,14 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 模拟支付结果。
+/// </summary>
+public sealed class MiniMockPayResponse
+{
+    public string OrderId { get; init; } = string.Empty;
+    public string StatusText { get; init; } = string.Empty;
+    public string PaymentStatusText { get; init; } = string.Empty;
+    public decimal PaidAmount { get; init; }
+    public string PaidAmountText { get; init; } = "0.00";
+    public string SuccessTip { get; init; } = string.Empty;
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniOrderDetailDto.cs

@@ -0,0 +1,59 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 订单详情。
+/// </summary>
+public sealed class MiniOrderDetailDto
+{
+    public string Id { get; init; } = string.Empty;
+    public string OrderNo { get; init; } = string.Empty;
+    public string StoreId { get; init; } = string.Empty;
+    public string StoreName { get; init; } = string.Empty;
+    public string StatusText { get; init; } = string.Empty;
+    public string PaymentStatusText { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public string CustomerName { get; init; } = string.Empty;
+    public string CustomerPhone { get; init; } = string.Empty;
+    public string TableNo { get; init; } = string.Empty;
+    public string Remark { get; init; } = string.Empty;
+    public decimal ItemsAmount { get; init; }
+    public decimal PackagingFee { get; init; }
+    public decimal DeliveryFee { get; init; }
+    public decimal DiscountAmount { get; init; }
+    public decimal PayableAmount { get; init; }
+    public decimal PaidAmount { get; init; }
+    public string ItemSummary { get; init; } = string.Empty;
+    public string CreatedAt { get; init; } = string.Empty;
+    public string? PaidAt { get; init; }
+    public string ActionText { get; init; } = string.Empty;
+    public IReadOnlyList<MiniOrderItemDto> Items { get; init; } = [];
+    public IReadOnlyList<MiniOrderTimelineDto> Timeline { get; init; } = [];
+
+    /// <summary>
+    /// 订单商品明细。
+    /// </summary>
+    public sealed class MiniOrderItemDto
+    {
+        public string Id { get; init; } = string.Empty;
+        public string ProductId { get; init; } = string.Empty;
+        public string ProductName { get; init; } = string.Empty;
+        public string SkuName { get; init; } = string.Empty;
+        public string Unit { get; init; } = string.Empty;
+        public int Quantity { get; init; }
+        public decimal UnitPrice { get; init; }
+        public string UnitPriceText { get; init; } = "0.00";
+        public decimal SubTotal { get; init; }
+        public string SubTotalText { get; init; } = "0.00";
+    }
+
+    /// <summary>
+    /// 订单时间线。
+    /// </summary>
+    public sealed class MiniOrderTimelineDto
+    {
+        public int Status { get; init; }
+        public string StatusText { get; init; } = string.Empty;
+        public string Notes { get; init; } = string.Empty;
+        public string OccurredAt { get; init; } = string.Empty;
+    }
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniOrderLineInput.cs

@@ -0,0 +1,12 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 结算行项目输入。
+/// </summary>
+public sealed class MiniOrderLineInput
+{
+    public string ProductId { get; init; } = string.Empty;
+    public string? SkuId { get; init; }
+    public int Quantity { get; init; }
+    public IReadOnlyList<string> AddonItemIds { get; init; } = [];
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniOrderSummaryDto.cs

@@ -0,0 +1,19 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 订单摘要。
+/// </summary>
+public sealed class MiniOrderSummaryDto
+{
+    public string Id { get; init; } = string.Empty;
+    public string OrderNo { get; init; } = string.Empty;
+    public string StoreName { get; init; } = string.Empty;
+    public string StatusText { get; init; } = string.Empty;
+    public string PaymentStatusText { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public string ItemSummary { get; init; } = string.Empty;
+    public decimal TotalAmount { get; init; }
+    public string TotalAmountText { get; init; } = "0.00";
+    public string CreatedAt { get; init; } = string.Empty;
+    public string ActionText { get; init; } = string.Empty;
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniPriceEstimateRequest.cs

@@ -0,0 +1,12 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 金额试算请求。
+/// </summary>
+public sealed class MiniPriceEstimateRequest
+{
+    public string StoreId { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public string Channel { get; init; } = string.Empty;
+    public IReadOnlyList<MiniOrderLineInput> Items { get; init; } = [];
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniPriceEstimateResponse.cs

@@ -0,0 +1,21 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 金额试算结果。
+/// </summary>
+public sealed class MiniPriceEstimateResponse
+{
+    public string StoreId { get; init; } = string.Empty;
+    public string Scene { get; init; } = string.Empty;
+    public int TotalCount { get; init; }
+    public decimal OriginalAmount { get; init; }
+    public string OriginalAmountText { get; init; } = "0.00";
+    public decimal PackagingFee { get; init; }
+    public string PackagingFeeText { get; init; } = "0.00";
+    public decimal DeliveryFee { get; init; }
+    public string DeliveryFeeText { get; init; } = "0.00";
+    public decimal DiscountAmount { get; init; }
+    public string DiscountAmountText { get; init; } = "0.00";
+    public decimal PayableAmount { get; init; }
+    public string PayableAmountText { get; init; } = "0.00";
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniProductDetailDto.cs

@@ -0,0 +1,69 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 商品详情。
+/// </summary>
+public sealed class MiniProductDetailDto
+{
+    public string Id { get; init; } = string.Empty;
+    public string StoreId { get; init; } = string.Empty;
+    public string CategoryId { get; init; } = string.Empty;
+    public string Name { get; init; } = string.Empty;
+    public string Subtitle { get; init; } = string.Empty;
+    public string Description { get; init; } = string.Empty;
+    public string CoverImageUrl { get; init; } = string.Empty;
+    public IReadOnlyList<string> GalleryImages { get; init; } = [];
+    public string Unit { get; init; } = string.Empty;
+    public decimal BasePrice { get; init; }
+    public string BasePriceText { get; init; } = "0.00";
+    public decimal? OriginalPrice { get; init; }
+    public string? OriginalPriceText { get; init; }
+    public bool SoldOut { get; init; }
+    public int MonthlySales { get; init; }
+    public IReadOnlyList<string> TagTexts { get; init; } = [];
+    public string? DefaultSkuId { get; init; }
+    public IReadOnlyList<MiniProductSkuDto> Skus { get; init; } = [];
+    public IReadOnlyList<MiniProductOptionGroupDto> OptionGroups { get; init; } = [];
+
+    /// <summary>
+    /// 商品 SKU。
+    /// </summary>
+    public sealed class MiniProductSkuDto
+    {
+        public string Id { get; init; } = string.Empty;
+        public decimal Price { get; init; }
+        public string PriceText { get; init; } = "0.00";
+        public decimal? OriginalPrice { get; init; }
+        public string? OriginalPriceText { get; init; }
+        public int? StockQuantity { get; init; }
+        public bool SoldOut { get; init; }
+        public IReadOnlyList<string> SelectedOptionIds { get; init; } = [];
+    }
+
+    /// <summary>
+    /// 商品选项分组。
+    /// </summary>
+    public sealed class MiniProductOptionGroupDto
+    {
+        public string Id { get; init; } = string.Empty;
+        public string Name { get; init; } = string.Empty;
+        public string GroupType { get; init; } = string.Empty;
+        public string SelectionType { get; init; } = string.Empty;
+        public bool Required { get; init; }
+        public int MinSelect { get; init; }
+        public int MaxSelect { get; init; }
+        public IReadOnlyList<MiniProductOptionDto> Options { get; init; } = [];
+    }
+
+    /// <summary>
+    /// 商品选项。
+    /// </summary>
+    public sealed class MiniProductOptionDto
+    {
+        public string Id { get; init; } = string.Empty;
+        public string Name { get; init; } = string.Empty;
+        public decimal ExtraPrice { get; init; }
+        public string ExtraPriceText { get; init; } = "0.00";
+        public bool SoldOut { get; init; }
+    }
+}

src/Application/TakeoutSaaS.Application/App/Mini/Contracts/MiniStoreSummaryDto.cs

@@ -0,0 +1,14 @@
+namespace TakeoutSaaS.Application.App.Mini.Contracts;
+
+/// <summary>
+/// 门店摘要。
+/// </summary>
+public sealed class MiniStoreSummaryDto
+{
+    public string Id { get; init; } = string.Empty;
+    public string Name { get; init; } = string.Empty;
+    public string Address { get; init; } = string.Empty;
+    public string BusinessHours { get; init; } = string.Empty;
+    public IReadOnlyList<string> Supports { get; init; } = [];
+    public IReadOnlyList<string> TagTexts { get; init; } = [];
+}

src/Application/TakeoutSaaS.Application/App/Mini/IMiniAppService.cs

@@ -0,0 +1,50 @@
+using TakeoutSaaS.Application.App.Mini.Contracts;
+
+namespace TakeoutSaaS.Application.App.Mini;
+
+/// <summary>
+/// 小程序真实业务服务抽象。
+/// </summary>
+public interface IMiniAppService
+{
+    /// <summary>
+    /// 查询可选门店。
+    /// </summary>
+    Task<IReadOnlyList<MiniStoreSummaryDto>> GetStoresAsync(long tenantId, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询门店分类。
+    /// </summary>
+    Task<IReadOnlyList<MiniCategoryDto>> GetCategoriesAsync(long tenantId, string storeId, string scene, string channel, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询门店菜单。
+    /// </summary>
+    Task<IReadOnlyList<MiniMenuSectionDto>> GetMenuAsync(long tenantId, string storeId, string scene, string channel, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询商品详情。
+    /// </summary>
+    Task<MiniProductDetailDto?> GetProductDetailAsync(long tenantId, string productId, string scene, string channel, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 试算订单金额。
+    /// </summary>
+    Task<MiniPriceEstimateResponse> EstimatePriceAsync(long tenantId, MiniPriceEstimateRequest request, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 校验结算请求。
+    /// </summary>
+    Task<MiniCheckoutValidationResponse> ValidateCheckoutAsync(long tenantId, MiniCheckoutValidationRequest request, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询顾客订单列表。
+    /// </summary>
+    Task<IReadOnlyList<MiniOrderSummaryDto>> GetOrdersAsync(long tenantId, string customerPhone, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询顾客订单详情。
+    /// </summary>
+    Task<MiniOrderDetailDto?> GetOrderDetailAsync(long tenantId, string orderId, string customerPhone, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 创建订单。
+    /// </summary>
+    Task<MiniCreateOrderResponse> CreateOrderAsync(long tenantId, string customerName, string customerPhone, MiniCreateOrderRequest request, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 模拟支付。
+    /// </summary>
+    Task<MiniMockPayResponse> MockPayAsync(long tenantId, string orderId, string customerPhone, CancellationToken cancellationToken = default);
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/Order.cs

@@ -0,0 +1,92 @@
+using TakeoutSaaS.Domain.Orders.Enums;
+using TakeoutSaaS.Domain.Payments.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 小程序订单聚合根。
+/// </summary>
+public sealed class Order : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单号。
+    /// </summary>
+    public string OrderNo { get; set; } = string.Empty;
+    /// <summary>
+    /// 门店 ID。
+    /// </summary>
+    public long StoreId { get; set; }
+    /// <summary>
+    /// 下单渠道。
+    /// </summary>
+    public OrderChannel Channel { get; set; } = OrderChannel.MiniProgram;
+    /// <summary>
+    /// 履约方式。
+    /// </summary>
+    public DeliveryType DeliveryType { get; set; } = DeliveryType.Delivery;
+    /// <summary>
+    /// 订单状态。
+    /// </summary>
+    public OrderStatus Status { get; set; } = OrderStatus.PendingPayment;
+    /// <summary>
+    /// 支付状态。
+    /// </summary>
+    public PaymentStatus PaymentStatus { get; set; } = PaymentStatus.Unpaid;
+    /// <summary>
+    /// 顾客姓名。
+    /// </summary>
+    public string? CustomerName { get; set; }
+    /// <summary>
+    /// 顾客手机号。
+    /// </summary>
+    public string? CustomerPhone { get; set; }
+    /// <summary>
+    /// 桌号。
+    /// </summary>
+    public string? TableNo { get; set; }
+    /// <summary>
+    /// 排队号。
+    /// </summary>
+    public string? QueueNumber { get; set; }
+    /// <summary>
+    /// 预约 ID。
+    /// </summary>
+    public long? ReservationId { get; set; }
+    /// <summary>
+    /// 商品原价合计。
+    /// </summary>
+    public decimal ItemsAmount { get; set; }
+    /// <summary>
+    /// 优惠金额。
+    /// </summary>
+    public decimal DiscountAmount { get; set; }
+    /// <summary>
+    /// 应付金额。
+    /// </summary>
+    public decimal PayableAmount { get; set; }
+    /// <summary>
+    /// 实付金额。
+    /// </summary>
+    public decimal PaidAmount { get; set; }
+    /// <summary>
+    /// 支付时间。
+    /// </summary>
+    public DateTime? PaidAt { get; set; }
+    /// <summary>
+    /// 完成时间。
+    /// </summary>
+    public DateTime? FinishedAt { get; set; }
+    /// <summary>
+    /// 取消时间。
+    /// </summary>
+    public DateTime? CancelledAt { get; set; }
+    /// <summary>
+    /// 取消原因。
+    /// </summary>
+    public string? CancelReason { get; set; }
+    /// <summary>
+    /// 订单备注。
+    /// </summary>
+    public string? Remark { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/OrderItem.cs

@@ -0,0 +1,50 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 订单明细。
+/// </summary>
+public sealed class OrderItem : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单 ID。
+    /// </summary>
+    public long OrderId { get; set; }
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; set; }
+    /// <summary>
+    /// 商品名称。
+    /// </summary>
+    public string ProductName { get; set; } = string.Empty;
+    /// <summary>
+    /// SKU 名称。
+    /// </summary>
+    public string? SkuName { get; set; }
+    /// <summary>
+    /// 单位。
+    /// </summary>
+    public string? Unit { get; set; }
+    /// <summary>
+    /// 数量。
+    /// </summary>
+    public int Quantity { get; set; }
+    /// <summary>
+    /// 单价。
+    /// </summary>
+    public decimal UnitPrice { get; set; }
+    /// <summary>
+    /// 优惠金额。
+    /// </summary>
+    public decimal DiscountAmount { get; set; }
+    /// <summary>
+    /// 小计。
+    /// </summary>
+    public decimal SubTotal { get; set; }
+    /// <summary>
+    /// 属性 JSON。
+    /// </summary>
+    public string? AttributesJson { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/OrderStatusHistory.cs

@@ -0,0 +1,31 @@
+using TakeoutSaaS.Domain.Orders.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 订单状态流转记录。
+/// </summary>
+public sealed class OrderStatusHistory : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单 ID。
+    /// </summary>
+    public long OrderId { get; set; }
+    /// <summary>
+    /// 变更后的状态。
+    /// </summary>
+    public OrderStatus Status { get; set; }
+    /// <summary>
+    /// 操作人 ID。
+    /// </summary>
+    public long? OperatorId { get; set; }
+    /// <summary>
+    /// 备注。
+    /// </summary>
+    public string? Notes { get; set; }
+    /// <summary>
+    /// 发生时间。
+    /// </summary>
+    public DateTime OccurredAt { get; set; } = DateTime.UtcNow;
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/DeliveryType.cs

@@ -0,0 +1,20 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 履约方式。
+/// </summary>
+public enum DeliveryType
+{
+    /// <summary>
+    /// 堂食。
+    /// </summary>
+    DineIn = 0,
+    /// <summary>
+    /// 自提。
+    /// </summary>
+    Pickup = 1,
+    /// <summary>
+    /// 配送。
+    /// </summary>
+    Delivery = 2
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/OrderChannel.cs

@@ -0,0 +1,20 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 下单渠道。
+/// </summary>
+public enum OrderChannel
+{
+    /// <summary>
+    /// 未知渠道。
+    /// </summary>
+    Unknown = 0,
+    /// <summary>
+    /// 小程序。
+    /// </summary>
+    MiniProgram = 1,
+    /// <summary>
+    /// 扫码点餐。
+    /// </summary>
+    ScanToOrder = 2
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/OrderStatus.cs

@@ -0,0 +1,32 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 订单状态。
+/// </summary>
+public enum OrderStatus
+{
+    /// <summary>
+    /// 待付款。
+    /// </summary>
+    PendingPayment = 0,
+    /// <summary>
+    /// 已付款待制作。
+    /// </summary>
+    AwaitingPreparation = 1,
+    /// <summary>
+    /// 制作中。
+    /// </summary>
+    InProgress = 2,
+    /// <summary>
+    /// 待取餐或待送达。
+    /// </summary>
+    Ready = 3,
+    /// <summary>
+    /// 已完成。
+    /// </summary>
+    Completed = 4,
+    /// <summary>
+    /// 已取消。
+    /// </summary>
+    Cancelled = 5
+}

src/Domain/TakeoutSaaS.Domain/Orders/Repositories/IOrderRepository.cs

@@ -0,0 +1,30 @@
+using TakeoutSaaS.Domain.Orders.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Repositories;
+
+/// <summary>
+/// 订单写仓储。
+/// </summary>
+public interface IOrderRepository
+{
+    /// <summary>
+    /// 新增订单。
+    /// </summary>
+    Task AddAsync(Order order, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 批量新增订单明细。
+    /// </summary>
+    Task AddItemsAsync(IReadOnlyCollection<OrderItem> items, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 新增状态流转记录。
+    /// </summary>
+    Task AddStatusHistoryAsync(OrderStatusHistory history, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 查询可写订单。
+    /// </summary>
+    Task<Order?> FindAsync(long tenantId, long orderId, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// 保存变更。
+    /// </summary>
+    Task SaveChangesAsync(CancellationToken cancellationToken = default);
+}

src/Domain/TakeoutSaaS.Domain/Payments/Enums/PaymentStatus.cs

@@ -0,0 +1,28 @@
+namespace TakeoutSaaS.Domain.Payments.Enums;
+
+/// <summary>
+/// 支付状态。
+/// </summary>
+public enum PaymentStatus
+{
+    /// <summary>
+    /// 未支付。
+    /// </summary>
+    Unpaid = 0,
+    /// <summary>
+    /// 支付中。
+    /// </summary>
+    Paying = 1,
+    /// <summary>
+    /// 已支付。
+    /// </summary>
+    Paid = 2,
+    /// <summary>
+    /// 支付失败。
+    /// </summary>
+    Failed = 3,
+    /// <summary>
+    /// 已退款。
+    /// </summary>
+    Refunded = 4
+}

src/Infrastructure/TakeoutSaaS.Infrastructure/App/Extensions/AppServiceCollectionExtensions.cs

@@ -1,5 +1,12 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.EntityFrameworkCore;
+using TakeoutSaaS.Application.App.Mini;
+using TakeoutSaaS.Domain.Orders.Repositories;
+using TakeoutSaaS.Infrastructure.App.Persistence;
+using TakeoutSaaS.Infrastructure.App.Repositories;
+using TakeoutSaaS.Infrastructure.App.Tenancy;
+using TakeoutSaaS.Module.Tenancy;
 
 namespace TakeoutSaaS.Infrastructure.App.Extensions;
 
@@ -9,14 +16,21 @@ namespace TakeoutSaaS.Infrastructure.App.Extensions;
 public static class AppServiceCollectionExtensions
 {
     /// <summary>
-    /// 注册骨架所需的基础设施能力。
+    /// 注册小程序端基础设施能力。
     /// </summary>
-    /// <param name="services">服务集合。</param>
-    /// <param name="configuration">配置源。</param>
-    /// <returns>服务集合。</returns>
     public static IServiceCollection AddAppInfrastructure(this IServiceCollection services, IConfiguration configuration)
     {
-        _ = configuration;
+        var writeConnectionString = configuration["Database:DataSources:AppDatabase:Write"];
+        if (string.IsNullOrWhiteSpace(writeConnectionString))
+        {
+            throw new InvalidOperationException("缺少 Database:DataSources:AppDatabase:Write 配置。");
+        }
+
+        services.AddDbContext<MiniOrderDbContext>(options => options.UseNpgsql(writeConnectionString));
+        services.AddScoped<IOrderRepository, EfOrderRepository>();
+        services.AddScoped<IMiniAppService, MiniAppService>();
+        services.AddScoped<ITenantCodeResolver, DatabaseTenantCodeResolver>();
         return services;
     }
 }
+

src/Infrastructure/TakeoutSaaS.Infrastructure/App/Persistence/MiniOrderDbContext.cs

@@ -0,0 +1,64 @@
+using Microsoft.EntityFrameworkCore;
+using TakeoutSaaS.Domain.Orders.Entities;
+
+namespace TakeoutSaaS.Infrastructure.App.Persistence;
+
+/// <summary>
+/// 小程序订单写库上下文。
+/// </summary>
+public sealed class MiniOrderDbContext(DbContextOptions<MiniOrderDbContext> options) : DbContext(options)
+{
+    public DbSet<Order> Orders => Set<Order>();
+    public DbSet<OrderItem> OrderItems => Set<OrderItem>();
+    public DbSet<OrderStatusHistory> OrderStatusHistories => Set<OrderStatusHistory>();
+
+    /// <summary>
+    /// 模型配置。
+    /// </summary>
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        var orderBuilder = modelBuilder.Entity<Order>();
+        orderBuilder.ToTable("orders");
+        orderBuilder.HasKey(x => x.Id);
+        orderBuilder.Property(x => x.OrderNo).HasMaxLength(64).IsRequired();
+        orderBuilder.Property(x => x.Channel).HasConversion<int>();
+        orderBuilder.Property(x => x.DeliveryType).HasConversion<int>();
+        orderBuilder.Property(x => x.Status).HasConversion<int>();
+        orderBuilder.Property(x => x.PaymentStatus).HasConversion<int>();
+        orderBuilder.Property(x => x.ItemsAmount).HasPrecision(18, 2);
+        orderBuilder.Property(x => x.DiscountAmount).HasPrecision(18, 2);
+        orderBuilder.Property(x => x.PayableAmount).HasPrecision(18, 2);
+        orderBuilder.Property(x => x.PaidAmount).HasPrecision(18, 2);
+        orderBuilder.Property(x => x.CustomerName).HasMaxLength(64);
+        orderBuilder.Property(x => x.CustomerPhone).HasMaxLength(32);
+        orderBuilder.Property(x => x.TableNo).HasMaxLength(64);
+        orderBuilder.Property(x => x.QueueNumber).HasMaxLength(64);
+        orderBuilder.Property(x => x.CancelReason).HasMaxLength(256);
+        orderBuilder.Property(x => x.Remark).HasMaxLength(512);
+
+        var itemBuilder = modelBuilder.Entity<OrderItem>();
+        itemBuilder.ToTable("order_items");
+        itemBuilder.HasKey(x => x.Id);
+        itemBuilder.Property(x => x.ProductName).HasMaxLength(128).IsRequired();
+        itemBuilder.Property(x => x.SkuName).HasMaxLength(256);
+        itemBuilder.Property(x => x.Unit).HasMaxLength(32);
+        itemBuilder.Property(x => x.UnitPrice).HasPrecision(18, 2);
+        itemBuilder.Property(x => x.DiscountAmount).HasPrecision(18, 2);
+        itemBuilder.Property(x => x.SubTotal).HasPrecision(18, 2);
+        itemBuilder.Property(x => x.AttributesJson).HasColumnType("text");
+        itemBuilder.HasOne<Order>()
+            .WithMany()
+            .HasForeignKey(x => x.OrderId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        var historyBuilder = modelBuilder.Entity<OrderStatusHistory>();
+        historyBuilder.ToTable("order_status_histories");
+        historyBuilder.HasKey(x => x.Id);
+        historyBuilder.Property(x => x.Status).HasConversion<int>();
+        historyBuilder.Property(x => x.Notes).HasMaxLength(256);
+        historyBuilder.HasOne<Order>()
+            .WithMany()
+            .HasForeignKey(x => x.OrderId)
+            .OnDelete(DeleteBehavior.Cascade);
+    }
+}

src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfOrderRepository.cs

@@ -0,0 +1,52 @@
+using Microsoft.EntityFrameworkCore;
+using TakeoutSaaS.Domain.Orders.Entities;
+using TakeoutSaaS.Domain.Orders.Repositories;
+using TakeoutSaaS.Infrastructure.App.Persistence;
+
+namespace TakeoutSaaS.Infrastructure.App.Repositories;
+
+/// <summary>
+/// 订单写仓储 EF 实现。
+/// </summary>
+public sealed class EfOrderRepository(MiniOrderDbContext dbContext) : IOrderRepository
+{
+    /// <inheritdoc />
+    public Task AddAsync(Order order, CancellationToken cancellationToken = default)
+    {
+        _ = cancellationToken;
+        dbContext.Orders.Add(order);
+        return Task.CompletedTask;
+    }
+
+    /// <inheritdoc />
+    public Task AddItemsAsync(IReadOnlyCollection<OrderItem> items, CancellationToken cancellationToken = default)
+    {
+        _ = cancellationToken;
+        if (items.Count > 0)
+        {
+            dbContext.OrderItems.AddRange(items);
+        }
+
+        return Task.CompletedTask;
+    }
+
+    /// <inheritdoc />
+    public Task AddStatusHistoryAsync(OrderStatusHistory history, CancellationToken cancellationToken = default)
+    {
+        _ = cancellationToken;
+        dbContext.OrderStatusHistories.Add(history);
+        return Task.CompletedTask;
+    }
+
+    /// <inheritdoc />
+    public Task<Order?> FindAsync(long tenantId, long orderId, CancellationToken cancellationToken = default)
+    {
+        return dbContext.Orders.FirstOrDefaultAsync(x => x.TenantId == tenantId && x.Id == orderId && x.DeletedAt == null, cancellationToken);
+    }
+
+    /// <inheritdoc />
+    public Task SaveChangesAsync(CancellationToken cancellationToken = default)
+    {
+        return dbContext.SaveChangesAsync(cancellationToken);
+    }
+}

src/Infrastructure/TakeoutSaaS.Infrastructure/App/Tenancy/DatabaseTenantCodeResolver.cs

@@ -0,0 +1,44 @@
+using Microsoft.Extensions.Configuration;
+using Dapper;
+using Npgsql;
+using TakeoutSaaS.Module.Tenancy;
+
+namespace TakeoutSaaS.Infrastructure.App.Tenancy;
+
+/// <summary>
+/// 基于业务库的租户编码解析器。
+/// </summary>
+public sealed class DatabaseTenantCodeResolver(IConfiguration configuration) : ITenantCodeResolver
+{
+    /// <inheritdoc />
+    public async Task<long?> ResolveAsync(string code, CancellationToken cancellationToken = default)
+    {
+        if (string.IsNullOrWhiteSpace(code))
+        {
+            return null;
+        }
+
+        var connectionString = configuration["Database:DataSources:AppDatabase:Reads:0"]
+            ?? configuration["Database:DataSources:AppDatabase:Write"];
+
+        if (string.IsNullOrWhiteSpace(connectionString))
+        {
+            return null;
+        }
+
+        await using var connection = new NpgsqlConnection(connectionString);
+        const string sql = """
+select "Id"
+from public.tenants
+where "DeletedAt" is null
+  and "Code" = @Code
+limit 1;
+""";
+
+        return await connection.ExecuteScalarAsync<long?>(new CommandDefinition(
+            sql,
+            new { Code = code.Trim() },
+            cancellationToken: cancellationToken));
+    }
+}
+

src/Infrastructure/TakeoutSaaS.Infrastructure/TakeoutSaaS.Infrastructure.csproj

@@ -5,12 +5,18 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.1" />
+    <PackageReference Include="Dapper" Version="2.1.72" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.3" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.3" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.3" />
+    <PackageReference Include="Npgsql" Version="10.0.1" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Application\TakeoutSaaS.Application\TakeoutSaaS.Application.csproj" />
     <ProjectReference Include="..\..\Domain\TakeoutSaaS.Domain\TakeoutSaaS.Domain.csproj" />
+    <ProjectReference Include="..\..\Modules\TakeoutSaaS.Module.Tenancy\TakeoutSaaS.Module.Tenancy.csproj" />
     <ProjectReference Include="..\..\..\TakeoutSaaS.BuildingBlocks\src\Core\TakeoutSaaS.Shared.Abstractions\TakeoutSaaS.Shared.Abstractions.csproj" />
   </ItemGroup>
 </Project>
+