feat: implement commission calculation strategy with ORM and SP options

src/CMSMicroservice.Infrastructure/Services/Commission/CommissionCalculationStrategyFactory.cs

@@ -0,0 +1,63 @@
+using CMSMicroservice.Application.Common.Interfaces;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace CMSMicroservice.Infrastructure.Services.Commission;
+
+/// <summary>
+/// Factory برای ایجاد Strategy مناسب براساس Config
+/// </summary>
+public class CommissionCalculationStrategyFactory : ICommissionCalculationStrategyFactory
+{
+    private readonly IApplicationDbContext _context;
+    private readonly IWeekDefinitionRepository _weekRepository;
+    private readonly IServiceProvider _serviceProvider;
+
+    /// <summary>
+    /// کلید Config برای انتخاب استراتژی
+    /// مقدار: "ORM" یا "SP"
+    /// پیش‌فرض: "ORM"
+    /// </summary>
+    private const string ConfigKey = "Commission.CalculationStrategy";
+
+    public CommissionCalculationStrategyFactory(
+        IApplicationDbContext context,
+        IWeekDefinitionRepository weekRepository,
+        IServiceProvider serviceProvider)
+    {
+        _context = context;
+        _weekRepository = weekRepository;
+        _serviceProvider = serviceProvider;
+    }
+
+    /// <inheritdoc />
+    public async Task<ICommissionCalculationStrategy> CreateStrategyAsync(CancellationToken cancellationToken = default)
+    {
+        // خواندن Config از دیتابیس
+        var config = await _context.SystemConfigurations
+            .FirstOrDefaultAsync(x => x.Key == ConfigKey && x.IsActive, cancellationToken);
+
+        var strategyValue = config?.Value?.ToUpperInvariant() ?? "ORM";
+
+        var strategyType = strategyValue switch
+        {
+            "SP" or "STOREDPROCEDURE" or "STORED_PROCEDURE" => CommissionCalculationStrategyType.StoredProcedure,
+            _ => CommissionCalculationStrategyType.Orm
+        };
+
+        return CreateStrategy(strategyType);
+    }
+
+    /// <inheritdoc />
+    public ICommissionCalculationStrategy CreateStrategy(CommissionCalculationStrategyType strategyType)
+    {
+        return strategyType switch
+        {
+            CommissionCalculationStrategyType.StoredProcedure => 
+                new StoredProcedureCommissionCalculationStrategy(_context),
+            
+            _ => // Orm is default
+                new OrmCommissionCalculationStrategy(_context, _weekRepository)
+        };
+    }
+}