chore: fixed the relevant tank finding algorithm

WotBlitzStatisticsPro.Blazor/Helpers/TanksHelper.cs

@@ -0,0 +1,81 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using WotBlitzStatisticsPro.Blazor.GraphQl;
+
+namespace WotBlitzStatisticsPro.Blazor.Helpers
+{
+    public static class TanksHelper
+    {
+        public static ITank FindMostRelevantTank(this IReadOnlyList<ITank> allTanks)
+        {
+            const int topTanksToMerge = 6;
+            if (allTanks.Count == 1)
+            {
+                return allTanks.First();
+            }
+
+            // Merge 6 tanks with max battles with 6 tanks with max Wn7, then with 6 tanks with max AvgDamage then with 6 tanks with Max Win rate. And sort result by max AvgXp and take first
+            
+            var topByBattles = allTanks
+                .OrderByDescending(t => t.Battles)
+                .Take(topTanksToMerge)
+                .Select(t => t.TankId)
+                .ToList();
+            var topByWn7 = allTanks
+                .Where(t => topByBattles.Contains(t.TankId))
+                .OrderByDescending(t => t.Wn7)
+                .Take(topTanksToMerge)
+                .Select(t => t.TankId)
+                .ToList();
+            var topByDamage = allTanks
+                .Where(t => topByBattles.Contains(t.TankId))
+                .OrderByDescending(t => t.AvgDamage)
+                .Take(topTanksToMerge)
+                .Select(t => t.TankId)
+                .ToList();
+            var topByWinRate = allTanks
+                .Where(t => topByBattles.Contains(t.TankId))
+                .OrderByDescending(t => t.WinRate)
+                .Take(topTanksToMerge)
+                .Select(t => t.TankId)
+                .ToList();
+
+            var firstIntersection = topByBattles.Intersect(topByWn7).ToList();
+            if (!firstIntersection.Any())
+            {
+                return allTanks.First(t => t.TankId == topByBattles.First());
+            }
+            if(firstIntersection.Count() == 1)
+            {
+                return allTanks.First(t => t.TankId == firstIntersection.First());
+            }
+
+            var secondIntersection = topByDamage.Intersect(firstIntersection).ToList();
+            if (!secondIntersection.Any())
+            {
+                return allTanks.First(t => t.TankId == firstIntersection.First());
+            }
+            if (secondIntersection.Count() == 1)
+            {
+                return allTanks.First(t => t.TankId == secondIntersection.First());
+            }
+
+            var thirdIntersection = topByWinRate.Intersect(secondIntersection).ToList();
+            if (!thirdIntersection.Any())
+            {
+                return allTanks.First(t => t.TankId == secondIntersection.First());
+            }
+            if (thirdIntersection.Count() == 1)
+            {
+                return allTanks.First(t => t.TankId == thirdIntersection.First());
+            }
+
+            return allTanks
+                .Where(t => thirdIntersection.Contains(t.TankId))
+                .OrderByDescending(t => t.AvgXp)
+                .First();
+        }
+
+    }
+}

WotBlitzStatisticsPro.Blazor/Pages/PlayerInfoOverview.razor

@@ -76,7 +76,7 @@
 
     protected override void OnInitialized()
     {
-        MostRelevantTank = AccountInfo?.Tanks?.Where(t => t.Battles > 50).OrderByDescending(t => t.Wn7).FirstOrDefault();
+        MostRelevantTank = AccountInfo?.Tanks?.FindMostRelevantTank();
         MaxXpTank = AccountInfo?.Tanks?.FirstOrDefault(t => t.TankId == AccountInfo.MaxXpTankId);
         MaxFragsTank = AccountInfo?.Tanks?.FirstOrDefault(t => t.TankId == AccountInfo.MaxFragsTankId);
     }