(Unicode C++) DocuSign Add One Document to a Draft Envelope

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Demonstrates how to add one document to a DocuSign draft envelope.

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

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#include <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkBinDataW.h>
#include <CkStringBuilderW.h>
#include <CkHttpResponseW.h>

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

    CkHttpW http;

    // Load a previously obtained OAuth2 access token.
    CkJsonObjectW jsonToken;
    bool success = jsonToken.LoadFile(L"qa_data/tokens/docusign.json");
    if (success == false) {
        wprintf(L"%s\n",jsonToken.lastErrorText());
        return;
    }

    // Adds the "Authorization: Bearer eyJ0eXAi.....UE8Kl_V8KroQ" header.
    http.put_AuthToken(jsonToken.stringOf(L"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>/documents HTTP/1.1
    // Expect: 100-continue
    // Accept: application/json
    // Cache-Control: no-cache
    // Authorization: Bearer eyJ0eX...
    // Content-Length: ...
    // Content-Type: application/json
    // 
    // {
    // 	"documents": [
    // 		{
    // 		"documentId": "1",
    // 		"name": "project_xyz.pdf",
    // 		"pages": "1",
    // 		"documentBase64": "<insert base64 content here>"
    // 		}
    // 	]
    // }

    CkBinDataW bd1;
    success = bd1.LoadFile(L"qa_data/pdf/project_xyz.pdf");

    CkJsonObjectW json;
    json.UpdateString(L"documents[0].documentId",L"1");
    json.UpdateString(L"documents[0].name",L"project_xyz.pdf");
    json.UpdateString(L"documents[0].pages",L"1");
    json.UpdateString(L"documents[0].documentBase64",bd1.getEncoded(L"base64"));

    CkStringBuilderW sbJson;
    json.put_EmitCompact(false);
    json.EmitSb(sbJson);

    http.SetRequestHeader(L"Expect",L"100-continue");
    http.SetRequestHeader(L"Cache-Control",L"no-cache");
    http.SetRequestHeader(L"Accept",L"application/json");

    // Use your own account ID here.
    http.SetUrlVar(L"accountId",L"7f3f65ed-5e87-418d-94c1-92499ddc8252");
    // Use the envelope ID returned by DocuSign when creating the draft envelope).
    http.SetUrlVar(L"envelopeId",L"0b437b95-cc50-475f-8dec-65bae9f27d09");

    const wchar_t *url = L"https://demo.docusign.net/restapi/v2.1/accounts/{$accountId}/envelopes/{$envelopeId}/documents";
    CkHttpResponseW *resp = http.PTextSb(L"PUT",url,sbJson,L"utf-8",L"application/json",false,false);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkJsonObjectW jResp;
    jResp.Load(resp->bodyStr());
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    // If you get a 401 response status code, it's likely you need to refresh the DocuSign OAuth2 token).
    int respStatusCode = resp->get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp->header());
        wprintf(L"Failed.\n");
        delete resp;
        return;
    }

    delete resp;

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

    // {
    //   "envelopeId": "da9fb811-e6a4-48c0-a9fb-81ed18b989af",
    //   "envelopeDocuments": [
    //     {
    //       "documentId": "1",
    //       "documentIdGuid": "38e919fc-0a77-4b0c-9da0-e3530f4e6fc7",
    //       "name": "project_xyz.pdf",
    //       "type": "content",
    //       "uri": "/envelopes/da9fb811-e6a4-48c0-a9fb-81ed18b989af/documents/1",
    //       "order": "3",
    //       "containsPdfFormFields": "false",
    //       "templateRequired": "false",
    //       "authoritativeCopy": "false"
    //     }
    //   ]
    // }

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

    const wchar_t *documentId = 0;
    const wchar_t *documentIdGuid = 0;
    const wchar_t *name = 0;
    const wchar_t *v_type = 0;
    const wchar_t *uri = 0;
    const wchar_t *order = 0;
    const wchar_t *containsPdfFormFields = 0;
    const wchar_t *templateRequired = 0;
    const wchar_t *authoritativeCopy = 0;

    const wchar_t *envelopeId = jResp.stringOf(L"envelopeId");
    int i = 0;
    int count_i = jResp.SizeOfArray(L"envelopeDocuments");
    while (i < count_i) {
        jResp.put_I(i);
        documentId = jResp.stringOf(L"envelopeDocuments[i].documentId");
        documentIdGuid = jResp.stringOf(L"envelopeDocuments[i].documentIdGuid");
        name = jResp.stringOf(L"envelopeDocuments[i].name");
        v_type = jResp.stringOf(L"envelopeDocuments[i].type");
        uri = jResp.stringOf(L"envelopeDocuments[i].uri");
        order = jResp.stringOf(L"envelopeDocuments[i].order");
        containsPdfFormFields = jResp.stringOf(L"envelopeDocuments[i].containsPdfFormFields");
        templateRequired = jResp.stringOf(L"envelopeDocuments[i].templateRequired");
        authoritativeCopy = jResp.stringOf(L"envelopeDocuments[i].authoritativeCopy");
        i = i + 1;
    }
    }