Separate each statistics pie chart into an independent component, fixes rendering crashes.

Aaru.Server.New/Components/Pages/Statistics/Versions.razor.cs

@@ -0,0 +1,60 @@
+using Aaru.CommonTypes.Metadata;
+using Blazorise.Charts;
+using Microsoft.EntityFrameworkCore;
+using DbContext = Aaru.Server.Database.DbContext;
+
+namespace Aaru.Server.New.Components.Pages.Statistics;
+
+public partial class Versions
+{
+    PieChart<long>?      _versionsChart;
+    List<long>           _versionsCounts = [];
+    string[]             _versionsLabels = [];
+    List<NameValueStats> VersionsList { get; set; } = [];
+
+    /// <inheritdoc />
+    protected override async Task OnInitializedAsync()
+    {
+        await base.OnInitializedAsync();
+
+        await using DbContext ctx = await DbContextFactory.CreateDbContextAsync();
+
+        VersionsList = (await ctx.Versions.Select(static nvs => new NameValueStats
+                                  {
+                                      name  = nvs.Name == "previous" ? "Previous than 3.4.99.0" : nvs.Name,
+                                      Value = nvs.Count
+                                  })
+                                 .ToListAsync()).OrderBy(static version => version.name)
+                                                .ToList();
+
+        _versionsLabels = await ctx.Versions.OrderByDescending(static o => o.Count)
+                                   .Take(10)
+                                   .Select(static v => v.Name == "previous" ? "Previous than 3.4.99.0" : v.Name)
+                                   .ToArrayAsync();
+
+        _versionsCounts = await ctx.Versions.OrderByDescending(static o => o.Count)
+                                   .Take(10)
+                                   .Select(static x => x.Count)
+                                   .ToListAsync();
+
+        if(_versionsLabels.Length >= 10)
+        {
+            _versionsLabels[9] = "Other";
+
+            _versionsCounts[9] = ctx.Versions.Sum(static o => o.Count) - _versionsCounts.Take(9).Sum();
+        }
+
+#pragma warning disable CS8604 // Possible null reference argument.
+        await Common.HandleRedraw(_versionsChart, _versionsLabels, GetVersionsChartDataset);
+#pragma warning restore CS8604 // Possible null reference argument.
+    }
+
+    PieChartDataset<long> GetVersionsChartDataset() => new()
+    {
+        Label           = $"Top {_versionsLabels.Length} Aaru versions",
+        Data            = _versionsCounts,
+        BackgroundColor = Common._backgroundColors,
+        BorderColor     = Common._borderColors,
+        BorderWidth     = 1
+    };
+}