(Unicode C) Find Contact Having Email Address

Demonstrates how to fetch the Google Contact for a given email address.

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#include <C_CkJsonObjectW.h>
#include <C_CkAuthGoogleW.h>
#include <C_CkRestW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkXmlW.h>
#include <C_CkFileAccessW.h>

void ChilkatSample(void)
    {
    HCkJsonObjectW jsonToken;
    BOOL success;
    HCkAuthGoogleW gAuth;
    HCkRestW rest;
    BOOL bAutoReconnect;
    const wchar_t *emailAddressToFind;
    HCkStringBuilderW sbResponseBody;
    HCkXmlW xml;
    int totalResults;
    int startIndex;
    int itemsPerPage;
    HCkFileAccessW fac;
    int numEntries;
    int i;
    const wchar_t *idUrl;
    const wchar_t *contactId;
    const wchar_t *fullName;
    const wchar_t *emailAddress;

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

    // --------------------------------------------------------------------------------------------------------
    // Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
    // Once connected, the REST object may be re-used for many REST API calls.
    // (It's a good idea to put the connection setup code in a separate function/subroutine.)
    // --------------------------------------------------------------------------------------------------------

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

    jsonToken = CkJsonObjectW_Create();
    success = CkJsonObjectW_LoadFile(jsonToken,L"qa_data/tokens/googleContacts.json");
    if (success != TRUE) {
        wprintf(L"Failed to load googleContacts.json\n");
        CkJsonObjectW_Dispose(jsonToken);
        return;
    }

    gAuth = CkAuthGoogleW_Create();
    CkAuthGoogleW_putAccessToken(gAuth,CkJsonObjectW_stringOf(jsonToken,L"access_token"));

    rest = CkRestW_Create();

    // Connect using TLS.
    bAutoReconnect = TRUE;
    success = CkRestW_Connect(rest,L"www.google.com",443,TRUE,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access token)
    CkRestW_SetAuthGoogle(rest,gAuth);

    // ----------------------------------------------
    // OK, the REST connection setup is completed..
    // ----------------------------------------------

    // To retrieve the contacts, we need to send the following:

    // 	GET /m8/feeds/contacts/default/full?q=<emailAddress>
    // 	GData-Version: 3.0

    // Get the contact (or contacts) with this email address:
    emailAddressToFind = L"admin@chilkatsoft.com";

    CkRestW_AddHeader(rest,L"GData-Version",L"3.0");
    CkRestW_AddQueryParam(rest,L"q",emailAddressToFind);

    sbResponseBody = CkStringBuilderW_Create();
    success = CkRestW_FullRequestNoBodySb(rest,L"GET",L"/m8/feeds/contacts/default/full",sbResponseBody);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkJsonObjectW_Dispose(jsonToken);
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body: %s\n",CkStringBuilderW_getAsString(sbResponseBody));
        CkJsonObjectW_Dispose(jsonToken);
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

    // If the 200 response was received, then the contacts XML is contained
    // in the response body.
    xml = CkXmlW_Create();
    CkXmlW_LoadSb(xml,sbResponseBody,FALSE);

    // See below for a sample response body.
    CkXmlW_SaveXml(xml,L"qa_output/google_contacts.xml");

    // Now let's parse the XML...

    // Get the the total number of results, the start index, and the items per page.
    // We'll likely NOT get the full list, but will instead get the 1st page.
    totalResults = CkXmlW_GetChildIntValue(xml,L"openSearch:totalResults");
    startIndex = CkXmlW_GetChildIntValue(xml,L"openSearch:startIndex");
    itemsPerPage = CkXmlW_GetChildIntValue(xml,L"openSearch:itemsPerPage");
    wprintf(L"totalResults = %d\n",totalResults);
    wprintf(L"startIndex = %d\n",startIndex);
    wprintf(L"itemsPerPage = %d\n",itemsPerPage);

    // We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop)
    fac = CkFileAccessW_Create();

    // Iterate over each contact.
    numEntries = CkXmlW_NumChildrenHavingTag(xml,L"entry");
    i = 0;
    while (i < numEntries) {
        CkXmlW_putI(xml,i);
        wprintf(L"%d ----\n",i + 1);
        wprintf(L"title: %s\n",CkXmlW_getChildContent(xml,L"entry[i]|title"));

        // The entry "id" child contains a URL having this format:
        // <id>http://www.google.com/m8/feeds/contacts/{userEmail}/base/{contactId}</id>
        // Let's get the URL and parse the contactId from it..
        idUrl = CkXmlW_getChildContent(xml,L"entry[i]|id");
        wprintf(L"id: %s\n",idUrl);

        // Use the parsing ability of GetFileName to get the contactId
        contactId = CkFileAccessW_getFileName(fac,idUrl);
        wprintf(L"contactId: %s\n",contactId);

        fullName = CkXmlW_chilkatPath(xml,L"entry[i]|gd:name|gd:fullName|*");
        if (CkXmlW_getLastMethodSuccess(xml) == TRUE) {
            wprintf(L"fullName: %s\n",fullName);
        }

        emailAddress = CkXmlW_chilkatPath(xml,L"entry[i]|gd:email|(address)");
        if (CkXmlW_getLastMethodSuccess(xml) == TRUE) {
            wprintf(L"email address: %s\n",emailAddress);
        }

        i = i + 1;
    }



    CkJsonObjectW_Dispose(jsonToken);
    CkAuthGoogleW_Dispose(gAuth);
    CkRestW_Dispose(rest);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkXmlW_Dispose(xml);
    CkFileAccessW_Dispose(fac);

    }