private async Task <T> GetMpesaResponseAsync <T, U>(string uri, U model, Models.Request.OAuth oAuth)
{
//Get the access token
var accessTokenModel = await GenerateAccessToken(oAuth);
//serialize request model
var serializedObject = JsonConvert.SerializeObject(model);
//set the content
var content = new StringContent(serializedObject, Encoding.UTF8, "application/json");
//Remove initial authorization header
_httpClient.DefaultRequestHeaders.Remove("Authorization");
//Set current authorization header
_httpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + accessTokenModel.AccessToken);
//send request
var response = await _httpClient.PostAsync(uri, content);
//ensure success
response.EnsureSuccessStatusCode();
//stringify content
var resultContent = await response.Content.ReadAsStringAsync();
//deserialize object
var result = JsonConvert.DeserializeObject <T>(resultContent);
return(result);
}
public async Task <Models.Response.OAuth> GenerateAccessToken(Models.Request.OAuth model)
{
//get key secret
var keySecret = model.ConsumerKey + ":" + model.ConsumerSecret;
//get base64 encoding of the keySecret(consumerKey:consumerSecret)
var encodedKeySecret = Convert.ToBase64String(Encoding.UTF8.GetBytes(keySecret));
//set Authorization header
_httpClient.DefaultRequestHeaders.Add("Authorization", "Basic " + encodedKeySecret);
//send request
var response = await _httpClient.GetAsync(SystemTransactionEndpoint.OAuth);
//ensure success
response.EnsureSuccessStatusCode();
//stringify content
var resultContent = await response.Content.ReadAsStringAsync();
//deserialize object
var result = JsonConvert.DeserializeObject <Models.Response.OAuth>(resultContent);
return(result);
}
/// <summary>
/// This API enables you to register the callback URLs via which you shall receive payment notifications for payments to your paybill/till number.
/// </summary>
/// <param name="model">RegisterUrl model</param>
/// <param name="oAuth">OAth model</param>
/// <returns>RegisterUrlResponse model</returns>
public async Task <Models.Response.RegisterUrl> RegisterUrl(Models.Request.RegisterUrl model, Models.Request.OAuth oAuth)
{
var result = await GetMpesaResponseAsync <Models.Response.RegisterUrl, object>(SystemTransactionEndpoint.C2BRegisterUrl, model, oAuth);
return(result);
}
/// <summary>
/// Use this API to check the status of a Lipa Na M-Pesa Online Payment.
/// </summary>
/// <param name="model">LipaNaMpesaQuery model</param>
/// <param name="oAuth">OAuth model</param>
/// <returns>LipaNaMpesaQueryResponse model</returns>
public async Task <Models.Response.LipaNaMpesaQuery> LipaNaMpesaQuery(Models.Request.LipaNaMpesaQuery model, Models.Request.OAuth oAuth)
{
var result = await GetMpesaResponseAsync <Models.Response.LipaNaMpesaQuery, object>(SystemTransactionEndpoint.LipaNaMpesaQuery, model, oAuth);
return(result);
}
/// <summary>
/// Also known as the Bulk Payment API, the Business to Consumer (B2C) API enables a Business or Organization to pay their customers for a variety of reasons.
/// </summary>
/// <param name="model">B2C model</param>
/// <param name="oAuth">OAuth model</param>
/// <returns>B2CResponse model</returns>
public async Task <Models.Response.B2C> B2C(Models.Request.B2C model, Models.Request.OAuth oAuth)
{
var result = await GetMpesaResponseAsync <Models.Response.B2C, object>(SystemTransactionEndpoint.B2C, model, oAuth);
return(result);
}
/// <summary>
/// This API is used to simulate payment requests from clients and to your API.
/// It basically simulates a payment made from the client phone's STK/SIM Toolkit menu, and enables you to receive the payment requests in real time.
/// </summary>
/// <param name="model">C2B model</param>
/// <param name="oAuth">OAuth model</param>
/// <returns>C2BResponse model</returns>
public async Task <Models.Response.C2B> C2B(Models.Request.C2B model, Models.Request.OAuth oAuth)
{
var result = await GetMpesaResponseAsync <Models.Response.C2B, object>(SystemTransactionEndpoint.C2BSimulateTransaction, model, oAuth);
return(result);
}