(Objective-C) DocuSign Send a Draft Envelope

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Demonstrates how to send a DocuSign draft envelope.

For more information, see https://developers.docusign.com/docs/esign-rest-api/reference/envelopes/envelopes/update/

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#import <CkoHttp.h>
#import <CkoJsonObject.h>
#import <CkoStringBuilder.h>
#import <NSString.h>
#import <CkoHttpResponse.h>

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

CkoHttp *http = [[CkoHttp alloc] init];

// Load a previously obtained OAuth2 access token.
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/docusign.json"];
if (success == NO) {
    NSLog(@"%@",jsonToken.LastErrorText);
    return;
}

// Adds the "Authorization: Bearer eyJ0eXAi.....UE8Kl_V8KroQ" header.
http.AuthToken = [jsonToken StringOf: @"access_token"];

// Send the following request.
// Make sure to use your own account ID (obtained from Get Docusign User Account Information)

// PUT https://demo.docusign.net/restapi/v2.1/accounts/<account ID>/envelopes/<envelope ID> HTTP/1.1
// Accept: application/json
// Cache-Control: no-cache
// Authorization: Bearer eyJ0eX...
// Content-Length: ...
// Content-Type: application/json
// 
// {
//   "status": "sent"
// }

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"status" value: @"sent"];

CkoStringBuilder *sbJson = [[CkoStringBuilder alloc] init];
json.EmitCompact = NO;
[json EmitSb: sbJson];

[http SetRequestHeader: @"Cache-Control" value: @"no-cache"];
[http SetRequestHeader: @"Accept" value: @"application/json"];

// Use your own account ID here.
[http SetUrlVar: @"accountId" value: @"7f3f65ed-5e87-418d-94c1-92499ddc8252"];
// Use the envelope ID returned by DocuSign when creating the draft envelope).
[http SetUrlVar: @"envelopeId" value: @"cee4191c-f94e-4089-9d7c-8033685cbc1a"];

NSString *url = @"https://demo.docusign.net/restapi/v2.1/accounts/{$accountId}/envelopes/{$envelopeId}";
CkoHttpResponse *resp = [http PTextSb: @"PUT" url: url textData: sbJson charset: @"utf-8" contentType: @"application/json" md5: NO gzip: NO];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp Load: resp.BodyStr];
jResp.EmitCompact = NO;

NSLog(@"%@",@"Response Body:");
NSLog(@"%@",[jResp Emit]);

// If you get a 401 response status code, it's likely you need to refresh the DocuSign OAuth2 token).
int respStatusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
if (respStatusCode >= 400) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",resp.Header);
    NSLog(@"%@",@"Failed.");

    return;
}

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// If the envelope you're trying to send is not yet completed, you'll get an error such as this:
// {
//   "errorCode": "ENVELOPE_IS_INCOMPLETE",
//   "message": "The Envelope is not Complete. A Complete Envelope Requires Documents, Recipients, Tabs, and a Subject Line."
// }

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