(Mono C#) Zoom API - Create JWT to Authenticate API Requests

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Creates a JWT for the Zoom API.

For more information, see https://marketplace.zoom.us/docs/api-reference/using-zoom-apis#using-jwt

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

// Use your API key and secret here...
string apiKey = "o9rw6Gq0RnqlkfaSqtCMOA";
string apiSecret = "UslmE23Kjh7at9z3If1xAHEyLmPDNxvxQrjR";

// Create a JWT to authenticate Zoom API requests.
Chilkat.Jwt jwt = new Chilkat.Jwt();

Chilkat.JsonObject jose = new Chilkat.JsonObject();
bool success = jose.UpdateString("alg","HS256");
success = jose.UpdateString("typ","JWT");

// Build claims to look like this:
// {"aud":null,"iss":"o9rw6Gq0RnqlkfaSqtCMOA","exp":1627651762,"iat":1627646363}
Chilkat.JsonObject claims = new Chilkat.JsonObject();
success = claims.UpdateString("iss",apiKey);
success = claims.UpdateNull("aud");

// Set the timestamp of when the JWT was created to now.
int curDateTime = jwt.GenNumericDate(0);
success = claims.AddIntAt(-1,"iat",curDateTime);

// Set the timestamp defining an expiration time (end time) for the token
// to be now + 1 month(3600 * 24 * 30 seconds)
int oneMonth = 3600 * 24 * 30;
success = claims.AddIntAt(-1,"exp",curDateTime + oneMonth);

// Produce the smallest possible JWT:
jwt.AutoCompact = true;

string strJwt = jwt.CreateJwt(jose.Emit(),claims.Emit(),apiSecret);

Debug.WriteLine(strJwt);

// Let's test the JWT to by sending the following request:

// curl --request GET \
//   --url 'https://api.zoom.us/v2/users?status=active&page_size=30&page_number=1' \
//   --header 'authorization: Bearer { your_token }' \
//   --header 'content-type: application/json

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

// Implements the following CURL command:

// curl --request GET \
//   --url 'https://api.zoom.us/v2/users?status=active&page_size=30&page_number=1' \
//   --header 'authorization: Bearer { your_token }' \
//   --header 'content-type: application/json

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

http.SetRequestHeader("content-type","application/json");
// Adds the "Authorization: Bearer { your_token }" header.
http.AuthToken = strJwt;

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = http.QuickGetSb("https://api.zoom.us/v2/users?status=active&page_size=30&page_number=1",sbResponseBody);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

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

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

int respStatusCode = http.LastStatus;
Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
if (respStatusCode >= 400) {
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(http.LastHeader);
    Debug.WriteLine("Failed.");
    return;
}

// Sample output:

// {
//   "page_count": 1,
//   "page_number": 1,
//   "page_size": 30,
//   "total_records": 1,
//   "users": [
//     {
//       "id": "s8uAiMJiRmS_-eu1yOhKlg",
//       "first_name": "Joe",
//       "last_name": "Example",
//       "email": "joe@example.com",
//       "type": 1,
//       "pmi": 5224934114,
//       "timezone": "America/Chicago",
//       "verified": 1,
//       "created_at": "2021-07-30T11:56:37Z",
//       "last_login_time": "2021-07-30T11:56:37Z",
//       "language": "en-US",
//       "phone_number": "",
//       "status": "active",
//       "role_id": "0"
//     }
//   ]
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

string id;
string first_name;
string last_name;
string email;
int v_type;
int pmi;
string timezone;
int verified;
string created_at;
string last_login_time;
string language;
string phone_number;
string status;
string role_id;

int page_count = jResp.IntOf("page_count");
int page_number = jResp.IntOf("page_number");
int page_size = jResp.IntOf("page_size");
int total_records = jResp.IntOf("total_records");
int i = 0;
int count_i = jResp.SizeOfArray("users");
while (i < count_i) {
    jResp.I = i;
    id = jResp.StringOf("users[i].id");
    first_name = jResp.StringOf("users[i].first_name");
    last_name = jResp.StringOf("users[i].last_name");
    email = jResp.StringOf("users[i].email");
    v_type = jResp.IntOf("users[i].type");
    pmi = jResp.IntOf("users[i].pmi");
    timezone = jResp.StringOf("users[i].timezone");
    verified = jResp.IntOf("users[i].verified");
    created_at = jResp.StringOf("users[i].created_at");
    last_login_time = jResp.StringOf("users[i].last_login_time");
    language = jResp.StringOf("users[i].language");
    phone_number = jResp.StringOf("users[i].phone_number");
    status = jResp.StringOf("users[i].status");
    role_id = jResp.StringOf("users[i].role_id");
    i = i + 1;
}