(C++) Shippo Generate a Return Label

Demonstrates how to generate a pay-on-use return label.

For more information, see https://goshippo.com/docs/return-labels/

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#include <CkHttp.h>
#include <CkHttpRequest.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>

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

    CkHttp http;
    bool success;

    // Implements the following CURL command:

    // curl https://api.goshippo.com/shipments/ \
    //     -H "Authorization: ShippoToken <API_Token>" \
    //     -d address_from="d799c2679e644279b59fe661ac8fa488" \
    //     -d address_to="42236bcf36214f62bcc6d7f12f02a849" \
    //     -d parcels=["7df2ecf8b4224763ab7c71fae7ec8274"] \
    //     -d shipment_date="2013-12-03T12:00:00.000Z" \
    //     -d extra='{ "is_return": true}' \
    //     -d async=false

    CkHttpRequest req;
    req.put_HttpVerb("POST");
    req.put_Path("/shipments/");
    req.put_ContentType("application/x-www-form-urlencoded");
    req.AddParam("address_from","d799c2679e644279b59fe661ac8fa488");
    req.AddParam("address_to","42236bcf36214f62bcc6d7f12f02a849");
    req.AddParam("parcels","[\"7df2ecf8b4224763ab7c71fae7ec8274\"]");
    req.AddParam("shipment_date","2013-12-03T12:00:00.000Z");
    req.AddParam("extra","'{ \"is_return\": true}'");
    req.AddParam("async","false");

    req.AddHeader("Authorization","ShippoToken <API_Token>");

    CkHttpResponse *resp = http.PostUrlEncoded("https://api.goshippo.com/shipments/",req);
    if (http.get_LastMethodSuccess() == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp->get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp->header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        delete resp;
        return;
    }

    delete resp;

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

    // {}

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

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.
    }