// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using Microsoft.Extensions.Configuration;
 
namespace Microsoft.Extensions.AI.Evaluation.Integration.Tests;
 
public class Settings
{
    public bool Configured { get; }
    public string DeploymentName { get; }
    public string ModelName { get; }
    public string Endpoint { get; }
    public string StorageRootPath { get; }
    public string AzureSubscriptionId { get; }
    public string AzureResourceGroupName { get; }
    public string AzureAIProjectName { get; }
    public string AzureAIProjectEndpoint { get; }
 
    public Settings(IConfiguration config)
    {
#pragma warning disable CA2208 // Pass correct parameter name for ArgumentNullException.
        Configured = config.GetValue("Configured", false);
 
        DeploymentName =
            config.GetValue<string>("DeploymentName") ??
            throw new ArgumentNullException(nameof(DeploymentName));
 
        ModelName =
            config.GetValue<string>("ModelName") ??
            throw new ArgumentNullException(nameof(ModelName));
 
        Endpoint =
            config.GetValue<string>("Endpoint") ??
            throw new ArgumentNullException(nameof(Endpoint));
 
        StorageRootPath =
            config.GetValue<string>("StorageRootPath") ??
            throw new ArgumentNullException(nameof(StorageRootPath));
 
        AzureSubscriptionId =
            config.GetValue<string>("AzureSubscriptionId")
            ?? throw new ArgumentNullException(nameof(AzureSubscriptionId));
 
        AzureResourceGroupName =
            config.GetValue<string>("AzureResourceGroupName")
            ?? throw new ArgumentNullException(nameof(AzureResourceGroupName));
 
        AzureAIProjectName =
            config.GetValue<string>("AzureAIProjectName")
            ?? throw new ArgumentNullException(nameof(AzureAIProjectName));
 
        AzureAIProjectEndpoint =
            config.GetValue<string>("AzureAIProjectEndpoint")
            ?? throw new ArgumentNullException(nameof(AzureAIProjectEndpoint));
#pragma warning restore CA2208
    }
 
    public static Settings Current => field ??= GetCurrentSettings();
 
    private static Settings GetCurrentSettings()
    {
        IConfigurationRoot config = new ConfigurationBuilder()
            .SetBasePath(AppContext.BaseDirectory)
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: false)
            .AddJsonFile("appsettings.local.json", optional: true, reloadOnChange: false)
            .AddEnvironmentVariables()
            .Build();
 
        return new Settings(config);
    }
}