Chore: Some API fixes

WotBlitzStatisticsPro.Common/Model/AccountInfoResponse.cs

@@ -148,6 +148,16 @@ namespace WotBlitzStatisticsPro.Common.Model
 		/// </summary>
         public decimal AvgXp => Battles == 0 ? 0m : (decimal)Xp / Battles;
 
+        /// <summary>
+        /// Damage coefficient
+        /// </summary>
+        public decimal DamageCoefficient => DamageReceived == 0 ? 0m : (decimal) DamageDealt / DamageReceived;
+
+        /// <summary>
+        /// Rate of survival
+        /// </summary>
+        public decimal SurvivalRate => Battles == 0 ? 0m : (decimal) 100 * SurvivedBattles / Battles;
+
 		/// <summary>
 		/// All player's tanks
 		/// </summary>

WotBlitzStatisticsPro.Common/Model/TankInfoResponse.cs

@@ -147,6 +147,17 @@ namespace WotBlitzStatisticsPro.Common.Model
         /// </summary>
         public decimal AvgXp => (decimal) Xp / Battles;
 
+        /// <summary>
+        /// Damage coefficient
+        /// </summary>
+        public decimal DamageCoefficient => DamageReceived == 0 ? 0m : (decimal)DamageDealt / DamageReceived;
+
+        /// <summary>
+        /// Rate of survival
+        /// </summary>
+        public decimal SurvivalRate => (decimal)100 * SurvivedBattles / Battles;
+
+
         /// <summary>
         /// Tank name
         /// </summary>

WotBlitzStatisticsPro.Logic/AccountInformationPipeline/AccountInformationPipelineContextData.cs

@@ -18,5 +18,7 @@ namespace WotBlitzStatisticsPro.Logic.AccountInformationPipeline
 
         public AccountInfo? DbAccountInfo { get; set; }
 
+        // ToDo: In the future, there should be the way to skip some operations in the pipe. Now we use this dummy flag...
+        public bool NeedToSaveData { get; set; }
     }
 }

WotBlitzStatisticsPro.Logic/AccountInformationPipeline/Operations/CheckLAstBattleDateOperation.cs

@@ -19,13 +19,10 @@ namespace WotBlitzStatisticsPro.Logic.AccountInformationPipeline.Operations
         {
             var contextData = context.Get<AccountInformationPipelineContextData>();
 
-            if (contextData.DbAccountInfo == null ||
+            contextData.NeedToSaveData = contextData.DbAccountInfo == null ||
-                contextData.DbAccountInfo.LastBattleTime < contextData.AccountInfo?.LastBattleTime)
+                                         contextData.DbAccountInfo.LastBattleTime <
-            {
+                                         contextData.AccountInfo?.LastBattleTime;
-                if (next != null) return next.Invoke(context);
+            return next != null ? next.Invoke(context) : Task.CompletedTask;
-            }
-            _logger.LogInformation($"Exiting without saving. Db LastBattleTime: {contextData.DbAccountInfo?.LastBattleTime}, WG LastBattleTime: {contextData.AccountInfo?.LastBattleTime}");
-            return Task.CompletedTask;
         }
     }
 }

WotBlitzStatisticsPro.Logic/AccountInformationPipeline/Operations/SaveAccountAndTanksOperation.cs

@@ -26,6 +26,13 @@ namespace WotBlitzStatisticsPro.Logic.AccountInformationPipeline.Operations
         {
             var contextData = context.Get<AccountInformationPipelineContextData>();
 
+            if (!contextData.NeedToSaveData)
+            {
+                _logger.LogInformation($"Proceeding without saving. Db LastBattleTime: {contextData.DbAccountInfo?.LastBattleTime}, WG LastBattleTime: {contextData.AccountInfo?.LastBattleTime}");
+                if (next != null) await next.Invoke(context);
+                return;
+            }
+
             if (contextData?.AccountInfo == null ||
                 contextData?.AccountInfoHistory == null ||
                 contextData?.Tanks == null ||