From 4efbbe8a4e452539c1272fac2ba5c5ca12343be7 Mon Sep 17 00:00:00 2001
From: Pat Hartl <pat@pathar.tl>
Date: Fri, 17 Feb 2023 00:33:32 -0600
Subject: [PATCH] Added basic dashboard

---
 LANCommander/LANCommander.csproj            |   1 +
 LANCommander/Models/PerformanceChartData.cs |  35 +++++
 LANCommander/Pages/Dashboard.razor          | 146 ++++++++++++++++++++
 3 files changed, 182 insertions(+)
 create mode 100644 LANCommander/Models/PerformanceChartData.cs
 create mode 100644 LANCommander/Pages/Dashboard.razor

diff --git a/LANCommander/LANCommander.csproj b/LANCommander/LANCommander.csproj
index 05532e1..e041303 100644
--- a/LANCommander/LANCommander.csproj
+++ b/LANCommander/LANCommander.csproj
@@ -43,6 +43,7 @@
     <PackageReference Include="rix0rrr.BeaconLib" Version="1.0.2" />
     <PackageReference Include="swashbuckle" Version="5.6.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.3.0" />
+    <PackageReference Include="System.Diagnostics.PerformanceCounter" Version="7.0.0" />
     <PackageReference Include="YamlDotNet" Version="12.3.1" />
   </ItemGroup>
 
diff --git a/LANCommander/Models/PerformanceChartData.cs b/LANCommander/Models/PerformanceChartData.cs
new file mode 100644
index 0000000..10984d6
--- /dev/null
+++ b/LANCommander/Models/PerformanceChartData.cs
@@ -0,0 +1,35 @@
+using MudBlazor;
+using System.Diagnostics;
+
+namespace LANCommander.Models
+{
+    public class PerformanceChartData
+    {
+        public PerformanceCounterData ProcessorUtilization { get; set; }
+        public Dictionary<string, PerformanceCounterData> NetworkUploadRate { get; set; }
+        public Dictionary<string, PerformanceCounterData> NetworkDownloadRate { get; set; }
+    }
+
+    public class PerformanceCounterData
+    {
+        public PerformanceCounter PerformanceCounter { get; set; }
+        public double[] Data { get; set; }
+
+        public ChartSeries ToSeries(string name)
+        {
+            return new ChartSeries
+            {
+                Name = name,
+                Data = Data
+            };
+        }
+
+        public List<ChartSeries> ToSeriesList(string name)
+        {
+            return new List<ChartSeries>
+            {
+                ToSeries(name)
+            };
+        }
+    }
+}
diff --git a/LANCommander/Pages/Dashboard.razor b/LANCommander/Pages/Dashboard.razor
new file mode 100644
index 0000000..0eb02b5
--- /dev/null
+++ b/LANCommander/Pages/Dashboard.razor
@@ -0,0 +1,146 @@
+@page "/Dashboard"
+
+@using System.Diagnostics;
+@using LANCommander.Models;
+
+<MudGrid Justify="Justify.Center">
+    <MudItem>
+        <MudCard>
+            <MudCardHeader>
+                <CardHeaderContent>
+                    <MudText Typo="Typo.h6">CPU Utilization (%)</MudText>
+                </CardHeaderContent>
+            </MudCardHeader>
+            <MudCardContent>
+                @if (PerformanceChartData.ProcessorUtilization != null && PerformanceChartData.ProcessorUtilization.PerformanceCounter != null)
+                {
+                    <MudChart ChartType="ChartType.Line" ChartSeries="@(PerformanceChartData.ProcessorUtilization.ToSeriesList("CPU %"))" Width="100%" Height="250px"></MudChart>
+                }
+            </MudCardContent>
+        </MudCard>
+    </MudItem>
+
+    <MudItem>
+        <MudCard>
+            <MudCardHeader>
+                <CardHeaderContent>
+                    <MudText Typo="Typo.h6">Upload Rate (MB/s)</MudText>
+                </CardHeaderContent>
+            </MudCardHeader>
+            <MudCardContent>
+                <MudChart ChartType="ChartType.Line" ChartSeries="@PerformanceChartData.NetworkUploadRate.Select(x => x.Value.ToSeries(x.Key)).ToList()" Width="100%" Height="250px"></MudChart>
+            </MudCardContent>
+        </MudCard>
+    </MudItem>
+
+    <MudItem>
+        <MudCard>
+            <MudCardHeader>
+                <CardHeaderContent>
+                    <MudText Typo="Typo.h6">Download Rate (MB/s)</MudText>
+                </CardHeaderContent>
+            </MudCardHeader>
+            <MudCardContent>
+                <MudChart ChartType="ChartType.Line" ChartSeries="@PerformanceChartData.NetworkDownloadRate.Select(x => x.Value.ToSeries(x.Key)).ToList()" Width="100%" Height="250px"></MudChart>
+            </MudCardContent>
+        </MudCard>
+    </MudItem>
+</MudGrid>
+
+@code {
+    int cpuTime = 0;
+
+    int RecordTime = 60;
+
+    private PerformanceChartData PerformanceChartData = new PerformanceChartData()
+    {
+        ProcessorUtilization = new PerformanceCounterData(),
+        NetworkUploadRate = new Dictionary<string, PerformanceCounterData>(),
+        NetworkDownloadRate = new Dictionary<string, PerformanceCounterData>()
+    };
+
+    protected override async Task OnInitializedAsync()
+    {
+        var timer = new System.Timers.Timer();
+
+        timer.Interval = 1000;
+
+        timer.Elapsed += async (s, e) =>
+        {
+            RefreshLiveData();
+
+            await InvokeAsync(StateHasChanged);
+        };
+
+        timer.Start();
+    }
+
+    private void RefreshLiveData()
+    {
+        RefreshProcessorUtilization();
+        RefreshNetworkUsage();
+    }
+
+    private void RefreshProcessorUtilization()
+    {
+        if (PerformanceChartData.ProcessorUtilization.PerformanceCounter == null)
+            PerformanceChartData.ProcessorUtilization.PerformanceCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total");
+
+        PerformanceChartData.ProcessorUtilization.Data = ShiftArrayAndInsert<double>(PerformanceChartData.ProcessorUtilization.Data, PerformanceChartData.ProcessorUtilization.PerformanceCounter.NextValue());
+    }
+
+    private void RefreshNetworkUsage()
+    {
+        var category = new PerformanceCounterCategory("Network Interface");
+
+        foreach (var instance in category.GetInstanceNames())
+        {
+            if (!PerformanceChartData.NetworkUploadRate.ContainsKey(instance))
+                PerformanceChartData.NetworkUploadRate[instance] = new PerformanceCounterData()
+                {
+                    PerformanceCounter = new PerformanceCounter("Network Interface", "Bytes Sent/sec", instance),
+                    Data = new double[RecordTime]
+                };
+
+            if (!PerformanceChartData.NetworkDownloadRate.ContainsKey(instance))
+                PerformanceChartData.NetworkDownloadRate[instance] = new PerformanceCounterData()
+                {
+                    PerformanceCounter = new PerformanceCounter("Network Interface", "Bytes Received/sec", instance),
+                        Data = new double[RecordTime]
+                };
+
+            PerformanceChartData.NetworkUploadRate[instance].Data = ShiftArrayAndInsert<double>(PerformanceChartData.NetworkUploadRate[instance].Data, (double)PerformanceChartData.NetworkUploadRate[instance].PerformanceCounter.NextValue() / (1024 * 1024));
+            PerformanceChartData.NetworkDownloadRate[instance].Data = ShiftArrayAndInsert<double>(PerformanceChartData.NetworkDownloadRate[instance].Data, (double)PerformanceChartData.NetworkDownloadRate[instance].PerformanceCounter.NextValue() / (1024 * 1024));
+        }
+    }
+
+    private T[] ShiftArrayAndInsert<T>(T[] array, T input)
+    {
+        if (array == null || array.Length < RecordTime)
+        {
+            array = new T[RecordTime];
+        }
+
+        Array.Copy(array, 1, array, 0, array.Length - 1);
+
+        array[array.Length - 1] = input;
+
+        return array;
+    }
+
+    private PerformanceCounter[] GetCounters(string categoryName)
+    {
+        try
+        {
+            var category = PerformanceCounterCategory.GetCategories().First(c => c.CategoryName == categoryName);
+
+            var instanceName = Process.GetCurrentProcess().ProcessName;
+
+            return category.GetCounters(instanceName);   
+        }
+        catch
+        {
+            return new PerformanceCounter[] { };
+        }
+    }
+}