public async Task <PayPalPaymentExecutedResponse> ExecutePayment(string paymentId, string payerId)
{
try
{
HttpClient http = GetPaypalHttpClient();
PaypalAccessToken accessToken = await GetPaypalAccessTokenAsync(http);
return(await ExecutePaypalPaymentAsync(http, accessToken, paymentId, payerId));
}
catch (Exception ex)
{
Debug.WriteLine(ex, "No se pudo iniciar sesión en PayPal");
return(null);
}
}
public async Task <string> GetRedirectUrlToPaypal(double total, string currency)
{
try
{
HttpClient http = GetPaypalHttpClient();
PaypalAccessToken accessToken = await GetPaypalAccessTokenAsync(http);
PaypalPaymentCreateResponce paypalPaymentCreateResponce = await CreatePaypalPaymentAsync(http, accessToken, total, currency);
return(paypalPaymentCreateResponce.links.First(x => x.rel == "approval_url").href);
}
catch (Exception ex)
{
Debug.WriteLine(ex, "No se pudo iniciar sesión en PayPal");
return(null);
}
}
public async Task <PaypalAccessToken> GetPaypalAccessTokenAsync(HttpClient http)
{
byte[] bytes = Encoding.GetEncoding("iso-8859-1").GetBytes($"{configuration["Paypal:ClientID"]}:{configuration["Paypal:Secret"]}");
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "/v1/oauth2/token");
request.Headers.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(bytes));
var form = new Dictionary <string, string>
{
["grant_type"] = "client_credentials"
};
request.Content = new FormUrlEncodedContent(form);
HttpResponseMessage response = await http.SendAsync(request);
string content = await response.Content.ReadAsStringAsync();
PaypalAccessToken accessToken = JsonConvert.DeserializeObject <PaypalAccessToken>(content);
return(accessToken);
}
public async Task <PaypalPaymentCreateResponce> CreatePaypalPaymentAsync(HttpClient httpclient, PaypalAccessToken accessToken, double total, string currency)
{
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "/v1/payments/payment/");//--/v1/checkout/orders/ /v2/checkout/orders/
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken.access_token);
var payment = JObject.FromObject(new
{
intent = "sale",
redirect_urls = new
{
return_url = configuration["Paypal:returnURL"],
cancel_url = configuration["Paypal:cancelURL"]
},
payer = new { payment_method = "paypal" },
transactions = JArray.FromObject(new[]
{
new
{
amount = new
{
total = total,
currency = currency
}
}
})
});
request.Content = new StringContent(JsonConvert.SerializeObject(payment), Encoding.UTF8, "application/json");
HttpResponseMessage response = await httpclient.SendAsync(request);
string content = await response.Content.ReadAsStringAsync();
PaypalPaymentCreateResponce payPalPaymentExecutedResponse = JsonConvert.DeserializeObject <PaypalPaymentCreateResponce>(content);
return(payPalPaymentExecutedResponse);
}
public async Task <PayPalPaymentExecutedResponse> ExecutePaypalPaymentAsync(HttpClient httpClient, PaypalAccessToken paypalAccessToken, string paymentId, string payerId)
{
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, $"/v1/payments/payment/{paymentId}/execute");
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", paypalAccessToken.access_token);
var payment = JObject.FromObject(new
{
payer_id = payerId
});
request.Content = new StringContent(JsonConvert.SerializeObject(payment), Encoding.UTF8, "application/json");
HttpResponseMessage response = await httpClient.SendAsync(request);
string content = await response.Content.ReadAsStringAsync();
PayPalPaymentExecutedResponse payPalPaymentExecutedResponse = JsonConvert.DeserializeObject <PayPalPaymentExecutedResponse>(content);
return(payPalPaymentExecutedResponse);
}
