Add variant collections system and enhance ProductVariant with weight/stock tracking

This commit introduces a comprehensive variant management system and enhances the existing ProductVariant model with per-variant weight overrides and stock tracking, integrated across Admin Panel and TeleBot. Features Added: - Variant Collections: Reusable variant templates (e.g., "Standard Sizes") - Admin UI for managing variant collections (CRUD operations) - Dynamic variant editor with JavaScript-based UI - Per-variant weight and weight unit overrides - Per-variant stock level tracking - SalesLedger model for financial tracking ProductVariant Enhancements: - Added Weight (decimal, nullable) field for variant-specific weights - Added WeightUnit (enum, nullable) field for variant-specific units - Maintains backward compatibility with product-level weights TeleBot Integration: - Enhanced variant selection UI to display stock levels - Shows weight information with proper unit conversion (µg, g, oz, lb, ml, L) - Compact button format: "Medium (15 in stock, 350g)" - Real-time stock availability display Database Migrations: - 20250928014850_AddVariantCollectionsAndSalesLedger - 20250928155814_AddWeightToProductVariants Technical Changes: - Updated Product model to support VariantCollectionId and VariantsJson - Extended ProductService with variant collection operations - Enhanced OrderService to handle variant-specific pricing and weights - Updated LittleShop.Client DTOs to match server models - Added JavaScript dynamic variant form builder Files Modified: 15 Files Added: 17 Lines Changed: ~2000 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-09-28 17:03:09 +01:00
parent 191a9f27f2
commit eb87148c63
32 changed files with 5884 additions and 102 deletions
--- a/LittleShop/Services/VariantCollectionService.cs
+++ b/LittleShop/Services/VariantCollectionService.cs
@@ -0,0 +1,112 @@
+using Microsoft.EntityFrameworkCore;
+using LittleShop.Data;
+using LittleShop.Models;
+using LittleShop.DTOs;
+
+namespace LittleShop.Services;
+
+public class VariantCollectionService : IVariantCollectionService
+{
+    private readonly LittleShopContext _context;
+
+    public VariantCollectionService(LittleShopContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<IEnumerable<VariantCollectionDto>> GetAllVariantCollectionsAsync()
+    {
+        return await _context.VariantCollections
+            .OrderByDescending(vc => vc.CreatedAt)
+            .Select(vc => new VariantCollectionDto
+            {
+                Id = vc.Id,
+                Name = vc.Name,
+                PropertiesJson = vc.PropertiesJson,
+                IsActive = vc.IsActive,
+                CreatedAt = vc.CreatedAt,
+                UpdatedAt = vc.UpdatedAt
+            })
+            .ToListAsync();
+    }
+
+    public async Task<VariantCollectionDto?> GetVariantCollectionByIdAsync(Guid id)
+    {
+        var collection = await _context.VariantCollections
+            .FirstOrDefaultAsync(vc => vc.Id == id);
+
+        if (collection == null) return null;
+
+        return new VariantCollectionDto
+        {
+            Id = collection.Id,
+            Name = collection.Name,
+            PropertiesJson = collection.PropertiesJson,
+            IsActive = collection.IsActive,
+            CreatedAt = collection.CreatedAt,
+            UpdatedAt = collection.UpdatedAt
+        };
+    }
+
+    public async Task<VariantCollectionDto> CreateVariantCollectionAsync(CreateVariantCollectionDto createDto)
+    {
+        var collection = new VariantCollection
+        {
+            Id = Guid.NewGuid(),
+            Name = createDto.Name,
+            PropertiesJson = string.IsNullOrWhiteSpace(createDto.PropertiesJson) ? "[]" : createDto.PropertiesJson,
+            IsActive = true,
+            CreatedAt = DateTime.UtcNow,
+            UpdatedAt = DateTime.UtcNow
+        };
+
+        _context.VariantCollections.Add(collection);
+        await _context.SaveChangesAsync();
+
+        return new VariantCollectionDto
+        {
+            Id = collection.Id,
+            Name = collection.Name,
+            PropertiesJson = collection.PropertiesJson,
+            IsActive = collection.IsActive,
+            CreatedAt = collection.CreatedAt,
+            UpdatedAt = collection.UpdatedAt
+        };
+    }
+
+    public async Task<bool> UpdateVariantCollectionAsync(Guid id, UpdateVariantCollectionDto updateDto)
+    {
+        var collection = await _context.VariantCollections.FindAsync(id);
+        if (collection == null) return false;
+
+        if (!string.IsNullOrEmpty(updateDto.Name))
+        {
+            collection.Name = updateDto.Name;
+        }
+
+        if (updateDto.PropertiesJson != null)
+        {
+            collection.PropertiesJson = string.IsNullOrWhiteSpace(updateDto.PropertiesJson) ? "[]" : updateDto.PropertiesJson;
+        }
+
+        if (updateDto.IsActive.HasValue)
+        {
+            collection.IsActive = updateDto.IsActive.Value;
+        }
+
+        collection.UpdatedAt = DateTime.UtcNow;
+        await _context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<bool> DeleteVariantCollectionAsync(Guid id)
+    {
+        var collection = await _context.VariantCollections.FindAsync(id);
+        if (collection == null) return false;
+
+        collection.IsActive = false;
+        collection.UpdatedAt = DateTime.UtcNow;
+        await _context.SaveChangesAsync();
+        return true;
+    }
+}