refactoring

src/Yavsc.Server/Services/BillingService.cs

@@ -0,0 +1,48 @@
+using System.Reflection;
+using Microsoft.EntityFrameworkCore;
+using Yavsc.Abstract.Workflow;
+using Yavsc.Models;
+
+namespace Yavsc.Services
+{
+    public class BillingService : IBillingService
+    {
+        public ApplicationDbContext DbContext { get; private set; }
+        public static Dictionary<string,Func<ApplicationDbContext,long,IDecidableQuery>> Billing =
+        new Dictionary<string,Func<ApplicationDbContext,long,IDecidableQuery>> ();
+        public static List<PropertyInfo> UserSettings = new List<PropertyInfo>();
+        
+        public static Dictionary<string,string> GlobalBillingMap =
+          new Dictionary<string,string>();
+
+        public Dictionary<string,string> BillingMap {
+          get { return GlobalBillingMap; }
+        }
+
+        public BillingService(ApplicationDbContext dbContext)
+        {
+            DbContext = dbContext;
+        }
+
+        public Task<IDecidableQuery> GetBillAsync(string billingCode, long queryId)
+        {
+            return Task.FromResult(GetBillable(DbContext,billingCode,queryId));
+        }
+
+        public static IDecidableQuery GetBillable(ApplicationDbContext context, string billingCode, long queryId ) =>  Billing[billingCode](context, queryId);
+        public async Task<ISpecializationSettings> GetPerformerSettingsAsync(string activityCode, string userId)
+        {
+            return (await  GetPerformersSettingsAsync(activityCode)).SingleOrDefault(s=> s.UserId == userId);
+        }
+
+        public async Task<IEnumerable<ISpecializationSettings>> GetPerformersSettingsAsync(string activityCode)
+        {
+            var activity = await DbContext.Activities.SingleAsync(a=>a.Code == activityCode);
+           
+            if (activity.SettingsClassName==null) return null;
+
+            return UserSettings.Where(s => s.PropertyType.GenericTypeArguments[0].FullName == activity.SettingsClassName)
+            .Cast<ISpecializationSettings>();
+        }
+    }
+}