ibms-dome/Backend/Controllers/OAuthController.cs

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using Autodesk.Forge;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
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using System;
using System.Threading.Tasks;
namespace forgeSample.Controllers
{
[ApiController]
public class OAuthController : ControllerBase
{
// As both internal & public tokens are used for all visitors
// we don't need to request a new token on every request, so let's
// cache them using static variables. Note we still need to refresh
// them after the expires_in time (in seconds)
private static dynamic InternalToken { get; set; }
private static dynamic PublicToken { get; set; }
private static IConfiguration _configuration;
public OAuthController(IConfiguration configuration) { _configuration = configuration; }
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/// <summary>
/// Get access token with public (viewables:read) scope
/// </summary>
[HttpGet]
[Route("api/forge/oauth/token")]
public async Task<dynamic> GetPublicAsync()
{
if (PublicToken == null || PublicToken.ExpiresAt < DateTime.UtcNow)
{
PublicToken = await Get2LeggedTokenAsync(_configuration, new Scope[] { Scope.ViewablesRead });
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PublicToken.ExpiresAt = DateTime.UtcNow.AddSeconds(PublicToken.expires_in);
}
return PublicToken;
}
/// <summary>
/// Get access token with internal (write) scope
/// </summary>
public static async Task<dynamic> GetInternalAsync(IConfiguration Configuration)
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{
if (InternalToken == null || InternalToken.ExpiresAt < DateTime.UtcNow)
{
InternalToken = await Get2LeggedTokenAsync(Configuration, new Scope[] { Scope.BucketCreate, Scope.BucketRead, Scope.BucketDelete, Scope.DataRead, Scope.DataWrite, Scope.DataCreate, Scope.CodeAll });
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InternalToken.ExpiresAt = DateTime.UtcNow.AddSeconds(InternalToken.expires_in);
}
return InternalToken;
}
/// <summary>
/// Get the access token from Autodesk
/// </summary>
private static async Task<dynamic> Get2LeggedTokenAsync(IConfiguration Configuration, Scope[] scopes)
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{
TwoLeggedApi oauth = new TwoLeggedApi();
string grantType = "client_credentials";
dynamic bearer = await oauth.AuthenticateAsync(
GetAppSetting(Configuration, "Forge:CLIENT_ID"),
GetAppSetting(Configuration, "Forge:CLIENT_SECRET"),
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grantType,
scopes);
return bearer;
}
/// <summary>
/// Reads appsettings from web.config
/// </summary>
public static string GetAppSetting(IConfiguration Configuration, string settingKey)
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{
return Configuration.GetValue<string>(settingKey).Trim();
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}
}
}