dApp Backend

Implementation

Example code

using System;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;

public class CloudWalletController
{
    private readonly IConfiguration _configuration;
    private readonly HttpClient _httpClient;

    public CloudWalletController(IConfiguration configuration)
    {
        _configuration = configuration;
        _httpClient = new HttpClient();
    }

    [HttpPost("sdk-token")]
    public async Task<IActionResult> GetSDKSingleUseToken([FromBody] TokenRequest request)
    {
        try
        {
            // Extract client_id from the request body or use default from config
            var clientId = request.ClientId ?? _configuration["MyCloudWallet:ClientId"];

            if (string.IsNullOrEmpty(clientId))
            {
                return BadRequest(new { error = "client_id is required" });
            }

            // Prepare the payload
            var payload = new
            {
                client_id = clientId,
                client_secret = _configuration["MyCloudWallet:ClientSecret"]
            };

            // Construct the swap token endpoint URL
            var sdkAuthorizationEndpoint = _configuration["MyCloudWallet:SdkAuthorizationEndpoint"];
            var endpoint = $"{sdkAuthorizationEndpoint}/dapp-sdk/sut/{clientId}";

            // Make the POST request
            var content = new StringContent(
                JsonSerializer.Serialize(payload),
                Encoding.UTF8,
                "application/json"
            );

            var response = await _httpClient.PostAsync(endpoint, content);
            var responseContent = await response.Content.ReadAsStringAsync();

            if (!response.IsSuccessStatusCode)
            {
                return StatusCode((int)response.StatusCode, JsonSerializer.Deserialize<object>(responseContent));
            }

            return Ok(JsonSerializer.Deserialize<object>(responseContent));
        }
        catch (Exception ex)
        {
            return StatusCode(500, new { error = "An internal server error occurred" });
        }
    }
}

public class TokenRequest
{
    public string ClientId { get; set; }
}

Configuration

{
  "MyCloudWallet": {
    "SdkAuthorizationEndpoint": "https://login-api.mycloudwallet.com/v1/wcw", // Base API URL
    "ClientSecret": "your-client-secret", // Client secret
    "ClientId": "your-client-id" // Optional: Default client ID if not provided in request
  }
}

dApp SDK API Key

1. Access My Cloud Wallet - Developer Settings
2. Requesting for SDK - Authorization
3. Filling SDK Authorization Request Form
4. Authorized Callback URL: URL of your DApp Backend
5. Input 2FA Code (setup one if you didn't setup yet)
6. Pending for approval
7. Once Approval/ Deny , there will be a notification appear on top header, right corner
8. Once request is approved, click on the request item again to view the secret key. plz aware that secret key can be viewed only once!