@page "/mva"
@using Esiur.Analysis.Queueing
@using Blazor.Extensions
@using Blazor.Extensions.Canvas
@using Blazor.Extensions.Canvas.Canvas2D
@using Esiur.Analysis.Graph
@using static Esiur.Analysis.Queueing.MeanValueAnalysis
@inject IJSRuntime JsRuntime;

<h1>
    Topic 3: Mean Value Analysis
</h1>
<h3>
    Prof. Dr. Emad Al-Hemiary - Al-Nahrain University
</h3>

<PageTitle>Topic 3: Mean Value Analysis</PageTitle>

<img src="img/mva.png" />

<table>
</table>

Customers:
<input @bind="customers" type="number" />

<button @onclick="Process">
    Compute
</button>


<table class="table-results">
    <thead>
        <tr>
            <td>Service Center</td>
            @foreach (var n in mva.Nodes)
            {
                <td>#@(n.Label)</td>
            }
        </tr>
    </thead>

    <tbody>
        <tr>
            <td>Mean Number of Customers L(i)</td>
            @foreach (var r in results)
            {
                <td>
                    @(r.MeanNumberOfCustomers.ToString("N4"))
                </td>
            }
        </tr>
        <tr>
            <td>Mean Response Time R(i)</td>
            @foreach (var r in results)
            {
                <td>@(r.MeanResponseTime.ToString("N4"))</td>
            }

        </tr>
        <tr>
            <td>Throughput X(i)</td>
            @foreach (var r in results)
            {
                <td>
                    @(r.Throughput.ToString("N4"))
                </td>
            }
        </tr>
        <tr>
            <td>Normalization Constant</td>
            <td>
                @(results.Length == 0 ? 0 : results[0].NormalizationConstant.ToString("N6"))
            </td>
        </tr>
    </tbody>
</table>

@code {
    private Esiur.Analysis.Queueing.MeanValueAnalysis mva;

    private int customers = 1;

    private MVAResult[] results = new MVAResult[0];

    protected override void OnInitialized()
    {
        var queues = new Queue[] { new Queue() {  ServiceRate = 2, VisitRatio = 1 , Label = "1"},
                                     new Queue() { Servers = 1 , ServiceRate = 1, VisitRatio = 0.2, Label = "2" },
                                     new Queue(){Servers = 1, ServiceRate = 2, VisitRatio = 0.3, Label = "3" },
                                     new Queue(){Servers = 1, ServiceRate = 4, VisitRatio = 0.5, Label = "4"}};

        mva = new Esiur.Analysis.Queueing.MeanValueAnalysis(queues);


        base.OnInitialized();
    }

    private void Process()
    {
        results = mva.Process(customers++);
    }
}