Add Archives page with pie chart and grid for archive formats statistics

Aaru.Server/Components/Pages/Statistics/Archives.razor

@@ -0,0 +1,25 @@
+@rendermode InteractiveServer
+
+@inject Microsoft.EntityFrameworkCore.IDbContextFactory<DbContext> DbContextFactory
+
+<PageTitle>Aaru: Statistics</PageTitle>
+
+@*
+    TODO: Group by datagrid
+*@
+
+<h1>
+    <p class="text-center" style="color: deeppink;">All archive formats found...</p>
+</h1>
+<PieChart @ref="_formatsChart" style="padding: 40px" TItem="long"/>
+<Grid Data="@ArchiveFormats" FixedHeader="true" PageSize="int.MaxValue" TItem="Archive" Responsive="true"
+      AllowSorting="true" Class="table table-hover table-bordered table-striped table-dark" style="width: 100%;">
+    <GridColumns>
+        <GridColumn TItem="Archive" HeaderText="Filter" PropertyName="@nameof(Archive.Name)">
+            @context.Name
+        </GridColumn>
+        <GridColumn TItem="Archive" HeaderText="Times found" PropertyName="@nameof(Archive.Count)">
+            @context.Count
+        </GridColumn>
+    </GridColumns>
+</Grid>

Aaru.Server/Components/Pages/Statistics/Archives.razor.cs

@@ -0,0 +1,76 @@
+using Aaru.Server.Database.Models;
+using BlazorBootstrap;
+using Microsoft.EntityFrameworkCore;
+using DbContext = Aaru.Server.Database.DbContext;
+
+namespace Aaru.Server.Components.Pages.Statistics;
+
+public partial class Archives
+{
+    PieChart          _formatsChart;
+    List<double?>     _formatsCounts = [];
+    List<string>      _formatsLabels = [];
+    bool              _isAlreadyInitialized;
+    List<Archive> ArchiveFormats { get; set; } = [];
+
+    /// <inheritdoc />
+    protected override async Task OnInitializedAsync()
+    {
+        await using DbContext ctx = await DbContextFactory.CreateDbContextAsync();
+
+        ArchiveFormats = await ctx.Archives.OrderBy(static format => format.Name).ToListAsync();
+
+        await base.OnInitializedAsync();
+    }
+
+    /// <inheritdoc />
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if(_isAlreadyInitialized) return;
+
+        _isAlreadyInitialized = true;
+        await using DbContext ctx = await DbContextFactory.CreateDbContextAsync();
+
+        _formatsLabels = await ctx.Archives.OrderByDescending(static o => o.Count)
+                                  .Take(10)
+                                  .Select(static v => v.Name)
+                                  .ToListAsync();
+
+        _formatsCounts = await ctx.Archives.OrderByDescending(static o => o.Count)
+                                  .Take(10)
+                                  .Select(static x => (double?)x.Count)
+                                  .ToListAsync();
+
+        if(_formatsLabels.Count >= 10)
+        {
+            _formatsLabels[9] = "Other";
+
+            _formatsCounts[9] = ctx.Archives.Sum(static o => o.Count) - _formatsCounts.Take(9).Sum();
+        }
+
+        PieChartOptions pieChartOptions = new()
+        {
+            Responsive = true
+        };
+
+        pieChartOptions.Plugins.Title.Text    = $"Top {_formatsLabels.Count} archive formats found";
+        pieChartOptions.Plugins.Title.Display = true;
+
+        var chartData = new ChartData
+        {
+            Labels = _formatsLabels,
+            Datasets =
+            [
+                new PieChartDataset
+                {
+                    Data            = _formatsCounts,
+                    BackgroundColor = Common.BackgroundColors,
+                    BorderColor     = Common.BorderColors,
+                    BorderWidth     = [1]
+                }
+            ]
+        };
+
+        await _formatsChart.InitializeAsync(chartData, pieChartOptions);
+    }
+}