@page "/"
@using System.Text;

@inject NavigationManager navigator

<PageTitle>Code</PageTitle>

<MudText Typo="Typo.h3" GutterBottom="true">Here's your code</MudText>
@* <MudText Typo="Typo.subtitle1">IMPORTANT: Take only 17 charecters from anywhere in the code!</MudText>*@
<MudPaper Class="pa-4" >
    <MudText Class="mb-8 flex-wrap" Typo="Typo.body1" Style="word-wrap:break-word;">@authCode</MudText>
</MudPaper>

@if (verified) 
{
    <MudText Typo="Typo.body2"> Verified!</MudText>
}

@code {
    string authCode = "";
    bool verified = false;

    protected override async Task OnInitializedAsync()
    {
        string semiCode = GetCode();
        string guess = semiCode.Skip(15).Take(17).ToString();

        if (authCode.Contains(guess))
            verified = true;

        await Task.Delay(30000);

        navigator.NavigateTo("", true);
    }

    public string GetCode()
    {
        var time = DateTime.Now;
        Random random = new Random(time.Hour);

        var sb = new StringBuilder();
        for (int i = 0; i < 100; i++)
        {
            string salt = (i + random.NextDouble()).ToString();
            sb.AppendLine(salt);
        }

        string semicode = Base64Encode(time.ToString("HH") + sb.ToString());
        semicode = semicode.Trim('=');
        authCode = semicode;

        return semicode;
    }

    public static string Base64Encode(string plainText)
    {
        var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
        return System.Convert.ToBase64String(plainTextBytes);
    }
}