public async Task <string> GetRedirectURLToPayPal(double total, string currency)
{
try
{
return(Task.Run(async() =>
{
HttpClient httpClient = GetPayPalHttpClient();
PayPalAccessToken accessToken = await GetPayPalAccessTokenAsync(httpClient);
PayPalPaymentCreatedResponse createdResponse = await CreatePayPalPaymentAsync(httpClient, accessToken, total, currency);
return createdResponse.links.First(x => x.rel == "approval_url").href;
}).Result);
}
catch (Exception ex)
{
Debug.WriteLine(ex, "Failed to login to PayPal");
return(null);
}
}
public async Task <PayPalPaymentCreatedResponse> CreatePayPalPaymentAsync(HttpClient httpClient,
PayPalAccessToken accessToken,
double total,
string currency)
{
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "/v1/payments/payment");
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();
PayPalPaymentCreatedResponse payPalPaymentCreated = JsonConvert.DeserializeObject <PayPalPaymentCreatedResponse>(content);
return(payPalPaymentCreated);
}