Refactor sales pipeline: ShopPO, Invoice, SysConfig models

Major refactor replacing Sale/Order with ShopPO → Invoice → LoadingSheet flow. Removed legacy Sale/Order models and features; introduced ShopPO, ShopPOItem, Invoice, LoadingSheetOrder, and SysConfig models. Updated related entities, enums, repositories, and controllers. Added new migrations for schema changes and system config. Overhauled business logic and DI registrations. Updated documentation with migration plan.

Distribution/Features/Invoice/IInvoiceRepository.cs

@@ -0,0 +1,13 @@
+using Distribution.Models;
+
+namespace Distribution.Features.Invoice;
+
+public interface IInvoiceRepository
+{
+    Task<Models.Invoice?> GetByIdAsync(Guid id);
+    Task<Models.Invoice?> GetByShopPOIdAsync(Guid shopPOId);
+    Task<List<Models.Invoice>> GetAllAsync(Guid? agentId, Guid? routeId, Guid? shopId, InvoiceStatus? status, int page, int pageSize);
+    Task<int> GetCountAsync(Guid? agentId, Guid? routeId, Guid? shopId, InvoiceStatus? status);
+    Task AddAsync(Models.Invoice invoice);
+    void Update(Models.Invoice invoice);
+}

Distribution/Features/Invoice/InvoiceController.cs

@@ -0,0 +1,29 @@
+using Microsoft.AspNetCore.Mvc;
+using Distribution.Models;
+
+namespace Distribution.Features.Invoice;
+
+[ApiController]
+[Route("api/invoices")]
+public class InvoiceController(InvoiceService service) : ControllerBase
+{
+    [HttpGet]
+    public async Task<IActionResult> GetAll(
+        [FromQuery] Guid? agentId,
+        [FromQuery] Guid? routeId,
+        [FromQuery] Guid? shopId,
+        [FromQuery] InvoiceStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20)
+    {
+        var result = await service.GetAllAsync(agentId, routeId, shopId, status, page, pageSize);
+        return Ok(result);
+    }
+
+    [HttpGet("{id:guid}")]
+    public async Task<IActionResult> GetById(Guid id)
+    {
+        var result = await service.GetByIdAsync(id);
+        return result is null ? NotFound() : Ok(result);
+    }
+}

Distribution/Features/Invoice/InvoiceDTOs.cs

@@ -0,0 +1,22 @@
+using Distribution.Models;
+
+namespace Distribution.Features.Invoice;
+
+public record CreateInvoiceRequest(Guid ShopPOId);
+public record InvoiceItemAdjustment(Guid ShopPOItemId, int AdjustedQuantity, string? Note = null);
+public record FinalizeInvoiceRequest(List<InvoiceItemAdjustment> Adjustments);
+
+public record InvoiceResponse(
+    Guid Id,
+    Guid ShopPOId,
+    string StoreName,
+    InvoiceStatus Status,
+    PaymentStatus PaymentStatus,
+    Guid CreatedBy,
+    DateTime? PrintedAt,
+    Guid? PrintedBy,
+    DateTime? FinalizedAt,
+    Guid? FinalizedBy,
+    decimal TotalAmount,
+    bool IsActive,
+    DateTime CreatedAt);

Distribution/Features/Invoice/InvoiceRepository.cs

@@ -0,0 +1,47 @@
+using Distribution.Data;
+using Distribution.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace Distribution.Features.Invoice;
+
+public class InvoiceRepository(AppDBContext context) : IInvoiceRepository
+{
+    public async Task<Models.Invoice?> GetByIdAsync(Guid id) =>
+        await context.Invoices
+            .Include(i => i.ShopPO).ThenInclude(p => p.Store)
+            .Include(i => i.Payments.Where(p => p.IsActive))
+            .FirstOrDefaultAsync(i => i.Id == id && i.IsActive);
+
+    public async Task<Models.Invoice?> GetByShopPOIdAsync(Guid shopPOId) =>
+        await context.Invoices
+            .Include(i => i.ShopPO)
+            .FirstOrDefaultAsync(i => i.FK_ShopPOId == shopPOId && i.IsActive);
+
+    public async Task<List<Models.Invoice>> GetAllAsync(Guid? agentId, Guid? routeId, Guid? shopId, InvoiceStatus? status, int page, int pageSize) =>
+        await context.Invoices
+            .Include(i => i.ShopPO).ThenInclude(p => p.Store)
+            .Where(i => i.IsActive
+                && (agentId == null || i.ShopPO.RaisedById == agentId)
+                && (routeId == null || i.ShopPO.Store.FK_RouteId == routeId)
+                && (shopId == null || i.ShopPO.FK_StoreId == shopId)
+                && (status == null || i.Status == status))
+            .OrderByDescending(i => i.CreatedAt)
+            .Skip((page - 1) * pageSize)
+            .Take(pageSize)
+            .ToListAsync();
+
+    public async Task<int> GetCountAsync(Guid? agentId, Guid? routeId, Guid? shopId, InvoiceStatus? status) =>
+        await context.Invoices
+            .Include(i => i.ShopPO).ThenInclude(p => p.Store)
+            .CountAsync(i => i.IsActive
+                && (agentId == null || i.ShopPO.RaisedById == agentId)
+                && (routeId == null || i.ShopPO.Store.FK_RouteId == routeId)
+                && (shopId == null || i.ShopPO.FK_StoreId == shopId)
+                && (status == null || i.Status == status));
+
+    public async Task AddAsync(Models.Invoice invoice) =>
+        await context.Invoices.AddAsync(invoice);
+
+    public void Update(Models.Invoice invoice) =>
+        context.Invoices.Update(invoice);
+}

Distribution/Features/Invoice/InvoiceService.cs

@@ -0,0 +1,33 @@
+using Distribution.Features.Stock;
+using Distribution.Infra.Authorization;
+using Distribution.Infra.UoW;
+using Distribution.Models;
+
+namespace Distribution.Features.Invoice;
+
+public class InvoiceService(
+    IInvoiceRepository repo,
+    IUnitOfWork uow,
+    ICurrentUserService currentUser)
+{
+    private static InvoiceResponse ToResponse(Models.Invoice i) =>
+        new(i.Id, i.FK_ShopPOId,
+            i.ShopPO?.Store?.StoreName ?? string.Empty,
+            i.Status, i.PaymentStatus, i.CreatedBy,
+            i.PrintedAt, i.PrintedBy,
+            i.FinalizedAt, i.FinalizedBy,
+            i.TotalAmount, i.IsActive, i.CreatedAt);
+
+    public async Task<InvoiceResponse?> GetByIdAsync(Guid id)
+    {
+        var invoice = await repo.GetByIdAsync(id);
+        return invoice is null ? null : ToResponse(invoice);
+    }
+
+    public async Task<PagedResponse<InvoiceResponse>> GetAllAsync(Guid? agentId, Guid? routeId, Guid? shopId, InvoiceStatus? status, int page, int pageSize)
+    {
+        var total = await repo.GetCountAsync(agentId, routeId, shopId, status);
+        var items = await repo.GetAllAsync(agentId, routeId, shopId, status, page, pageSize);
+        return new PagedResponse<InvoiceResponse>(page, pageSize, total, items.Select(ToResponse).ToList());
+    }
+}