Hastlayer-SDK

using Hast.Layer;
using System;

namespace Hast.Vitis.Models;

public class AzureAttestationConfiguration : AzureStorageConfiguration
{
    /// <summary>
    /// Gets or sets the Azure function URL for blob attestation submission.
    /// </summary>
    public Uri StartFunctionUrl { get; set; } = new("https://fpga-attestation.azurewebsites.net/api/ComputeFPGA_HttpStart");

    /// <summary>
    /// Gets or sets the Azure function URL for polling the status of the attestation process.
    /// </summary>
    public Uri PollFunctionUrl { get; set; } = new("https://fpga-attestation.azurewebsites.net/api/ComputeFPGA_HttpGetStatus");

    /// <summary>
    ///     <para>
    ///         Gets or sets the ID of the user hosting the storage blob. You can retrieve it using:
    ///     </para>
    ///     <code>
    ///         az account show --output tsv --query id
    ///     </code>
    /// </summary>
    public string ClientSubscriptionId { get; set; }

    /// <summary>
    ///     <para>
    ///         Gets or sets the ID of the tenant hosting the storage blob. You can retrieve it using:
    ///     </para>
    ///     <code>
    ///         az account show --output tsv --query tenantId
    ///     </code>
    /// </summary>
    public string ClientTenantId { get; set; }

    public AzureAttestationConfiguration Verify()
    {
        if (StartFunctionUrl == null) ThrowMissing(nameof(StartFunctionUrl));
        if (PollFunctionUrl == null) ThrowMissing(nameof(PollFunctionUrl));
        if (string.IsNullOrEmpty(StorageAccountName)) ThrowMissing(nameof(StorageAccountName));
        if (string.IsNullOrEmpty(ClientTenantId)) ThrowMissing(nameof(ClientTenantId));
        if (string.IsNullOrEmpty(ClientSubscriptionId)) ThrowMissing(nameof(ClientSubscriptionId));

        return this;
    }

    private static void ThrowMissing(string name) =>
        throw new InvalidOperationException(
            $"The property \"{name}\" is missing or empty. It is required to use the attestation service. Please " +
            $"specify it in the appsettings.json or otherwise set the {nameof(IHardwareGenerationConfiguration)}. " +
            $"See the Readme of the Hast.Vitis library for further details.");
}