初始化

backend/HardwarePerformance.Infrastructure/Data/SimpleAppDbContext.cs

@@ -1,6 +1,7 @@
 using System.Data;
 using MySql.Data.MySqlClient;
 using HardwarePerformance.Core.Entities;
+using Microsoft.Extensions.Configuration;
 
 namespace HardwarePerformance.Infrastructure.Data;
 
@@ -202,4 +203,63 @@ public class SimpleAppDbContext
         cmd.CommandText = insertSpecifications;
         await cmd.ExecuteNonQueryAsync();
     }
+    
+    public async Task<List<object>> GetCategoriesAsync()
+    {
+        var categories = new List<object>();
+        
+        using var connection = new MySqlConnection(_connectionString);
+        await connection.OpenAsync();
+        
+        using var cmd = new MySqlCommand("SELECT * FROM Categories", connection);
+        using var reader = await cmd.ExecuteReaderAsync();
+        
+        while (await reader.ReadAsync())
+        {
+            categories.Add(new
+            {
+                Id = reader.GetInt32("Id"),
+                Name = reader.GetString("Name"),
+                Description = reader.IsDBNull("Description") ? null : reader.GetString("Description"),
+                CreatedAt = reader.GetDateTime("CreatedAt")
+            });
+        }
+        
+        return categories;
+    }
+    
+    public async Task<List<object>> GetProductsAsync(int categoryId = 0, int page = 1, int pageSize = 10)
+    {
+        var products = new List<object>();
+        
+        using var connection = new MySqlConnection(_connectionString);
+        await connection.OpenAsync();
+        
+        var offset = (page - 1) * pageSize;
+        var query = categoryId > 0 
+            ? $"SELECT p.*, c.Name as CategoryName FROM Products p LEFT JOIN Categories c ON p.CategoryId = c.Id WHERE p.CategoryId = {categoryId} LIMIT {pageSize} OFFSET {offset}"
+            : $"SELECT p.*, c.Name as CategoryName FROM Products p LEFT JOIN Categories c ON p.CategoryId = c.Id LIMIT {pageSize} OFFSET {offset}";
+        
+        using var cmd = new MySqlCommand(query, connection);
+        using var reader = await cmd.ExecuteReaderAsync();
+        
+        while (await reader.ReadAsync())
+        {
+            products.Add(new
+            {
+                Id = reader.GetInt32("Id"),
+                Name = reader.GetString("Name"),
+                Model = reader.IsDBNull("Model") ? null : reader.GetString("Model"),
+                Manufacturer = reader.IsDBNull("Manufacturer") ? null : reader.GetString("Manufacturer"),
+                ImageUrl = reader.IsDBNull("ImageUrl") ? null : reader.GetString("ImageUrl"),
+                ReleaseDate = reader.IsDBNull("ReleaseDate") ? (DateTime?)null : reader.GetDateTime("ReleaseDate"),
+                CategoryId = reader.IsDBNull("CategoryId") ? (int?)null : reader.GetInt32("CategoryId"),
+                CategoryName = reader.IsDBNull("CategoryName") ? null : reader.GetString("CategoryName"),
+                CurrentRank = reader.IsDBNull("CurrentRank") ? (int?)null : reader.GetInt32("CurrentRank"),
+                CreatedAt = reader.GetDateTime("CreatedAt")
+            });
+        }
+        
+        return products;
+    }
 }