(Mono C#) Refresh WiX Access Token

Request a new access token each time you call a WiX API. Use the refresh token together with your secret key, to request refresh tokens

For more information, see https://dev.wix.com/api/rest/authorization/oauth-2/refresh-an-access-token

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

// Implements the following CURL command:

// curl -X POST \
//   https://www.wix.com/oauth/access \
//   -H 'Content-Type: application/json' \
//   -d '{
//     "grant_type": "refresh_token",
//     "client_id": <CLIENT_ID>,
//     "client_secret": <CLIENT_SECRET>,
//     "refresh_token": <REFRESH_TOKEN>
// }'

// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file 
// saved by this example: Get WiX OAuth2 Access Token

Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
bool success = jsonToken.LoadFile("qa_data/tokens/wix.json");
if (success != true) {
    Debug.WriteLine("Failed to load square.json");
    return;
}

// Get the "refresh_token"
string refreshToken = jsonToken.StringOf("refresh_token");

// The following JSON is sent in the request body.

// {
//   "grant_type": "refresh_token",
//   "client_id": <APP_ID>,
//   "client_secret": <APP_SECRET>,
//   "refresh_token": <REFRESH_TOKEN>
// }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("grant_type","refresh_token");
json.UpdateString("client_id","CLIENT_ID");
json.UpdateString("client_secret","CLIENT_SECRET");
json.UpdateString("refresh_token",refreshToken);

http.SetRequestHeader("Content-Type","application/json");

Chilkat.HttpResponse resp = http.PostJson3("https://www.wix.com/oauth/access","application/json",json);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
resp.GetBodySb(sbResponseBody);
Chilkat.JsonObject jResp = new Chilkat.JsonObject();
jResp.LoadSb(sbResponseBody);
jResp.EmitCompact = false;

Debug.WriteLine("Response Body:");
Debug.WriteLine(jResp.Emit());

int respStatusCode = resp.StatusCode;
Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
if (respStatusCode >= 400) {
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(resp.Header);
    Debug.WriteLine("Failed.");

    return;
}

// Sample JSON response:

// {
//   "refresh_token": "OAUTH2.eyJraWQ ... vnB4cQ",
//   "access_token": "OAUTH2.eyJra ... la18lrw"
// }

string refresh_token = jResp.StringOf("refresh_token");
string access_token = jResp.StringOf("access_token");

// Save the new JSON access token response to a file.
sbResponseBody.WriteFile("qa_data/tokens/wix.json","utf-8",false);