Unicode C

Google Maps Geolocation Request

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Demonstrates how make a Google Maps Geolocation REST API request. Unicode C

#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkJsonArrayW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRestW rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkJsonObjectW json;
    HCkJsonArrayW aCellTowers;
    HCkJsonObjectW oCellTower;
    HCkJsonArrayW aWifi;
    HCkJsonObjectW oPoint;
    const wchar_t *responseJson;
    HCkJsonObjectW jsonResp;
    HCkJsonObjectW jsonLoc;
    const wchar_t *latitude;
    const wchar_t *longitude;
    const wchar_t *accuracy;

    success = FALSE;

    // This example duplicates the following CURL request:
    // curl -d @your_filename.json -H "Content-Type: application/json" -i "https://www.googleapis.com/geolocation/v1/geolocate?key=YOUR_API_KEY"

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

    rest = CkRestW_Create();

    // Connect to the Google API REST server.
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRestW_Connect(rest,L"www.googleapis.com",port,bTls,bAutoReconnect);

    // Add the Content-Type request header.
    CkRestW_AddHeader(rest,L"Content-Type",L"application/json");

    // Add your API key as a query parameter
    CkRestW_AddQueryParam(rest,L"key",L"YOUR_API_KEY");

    // The JSON query is contained in the body of the HTTP POST.
    // This is a sample query (which we'll dynamically build in this example)
    // { 
    //  "homeMobileCountryCode": 310,
    //  "homeMobileNetworkCode": 260,
    //  "radioType": "gsm",
    //  "carrier": "T-Mobile",
    //  "cellTowers": [
    //   {
    //    "cellId": 39627456,
    //    "locationAreaCode": 40495,
    //    "mobileCountryCode": 310,
    //    "mobileNetworkCode": 260,
    //    "age": 0,
    //    "signalStrength": -95
    //   }
    //  ],
    //  "wifiAccessPoints": [
    //   { 
    //    "macAddress": "01:23:45:67:89:AB",
    //    "signalStrength": 8,
    //    "age": 0,
    //    "signalToNoiseRatio": -65,
    //    "channel": 8
    //   },
    //   { 
    //    "macAddress": "01:23:45:67:89:AC",
    //    "signalStrength": 4,
    //    "age": 0
    //   }
    //  ]
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_AppendInt(json,L"homeMobileCountryCode",310);
    CkJsonObjectW_AppendInt(json,L"homeMobileNetworkCode",260);
    CkJsonObjectW_AppendString(json,L"radioType",L"gsm");
    CkJsonObjectW_AppendString(json,L"carrier",L"T-Mobile");

    aCellTowers = CkJsonArrayW_Create();
    CkJsonObjectW_AppendArray2(json,L"cellTowers",aCellTowers);

    oCellTower = CkJsonObjectW_Create();
    CkJsonArrayW_AddObjectAt2(aCellTowers,0,oCellTower);
    CkJsonObjectW_AppendInt(oCellTower,L"cellId",39627456);
    CkJsonObjectW_AppendInt(oCellTower,L"locationAreaCode",40495);
    CkJsonObjectW_AppendInt(oCellTower,L"mobileCountryCode",310);
    CkJsonObjectW_AppendInt(oCellTower,L"mobileNetworkCode",260);
    CkJsonObjectW_AppendInt(oCellTower,L"age",0);
    CkJsonObjectW_AppendInt(oCellTower,L"signalStrength",-95);

    aWifi = CkJsonArrayW_Create();
    CkJsonObjectW_AppendArray2(json,L"wifiAccessPoints",aWifi);

    oPoint = CkJsonObjectW_Create();
    CkJsonArrayW_AddObjectAt2(aWifi,0,oPoint);
    CkJsonObjectW_AppendString(oPoint,L"macAddress",L"01:23:45:67:89:AB");
    CkJsonObjectW_AppendInt(oPoint,L"signalStrength",8);
    CkJsonObjectW_AppendInt(oPoint,L"age",0);
    CkJsonObjectW_AppendInt(oPoint,L"signalToNoiseRatio",-65);
    CkJsonObjectW_AppendInt(oPoint,L"channel",8);

    CkJsonArrayW_AddObjectAt2(aWifi,1,oPoint);
    CkJsonObjectW_AppendString(oPoint,L"macAddress",L"01:23:45:67:89:AC");
    CkJsonObjectW_AppendInt(oPoint,L"signalStrength",4);
    CkJsonObjectW_AppendInt(oPoint,L"age",0);

    responseJson = CkRestW_fullRequestString(rest,L"POST",L"/geolocation/v1/geolocate",CkJsonObjectW_emit(json));
    if (CkRestW_getLastMethodSuccess(rest) == FALSE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkJsonArrayW_Dispose(aCellTowers);
        CkJsonObjectW_Dispose(oCellTower);
        CkJsonArrayW_Dispose(aWifi);
        CkJsonObjectW_Dispose(oPoint);
        return;
    }

    // When successful, the response code is 200.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        // Examine the request/response to see what happened.
        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 JSON: %s\n",responseJson);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkJsonArrayW_Dispose(aCellTowers);
        CkJsonObjectW_Dispose(oCellTower);
        CkJsonArrayW_Dispose(aWifi);
        CkJsonObjectW_Dispose(oPoint);
        return;
    }

    CkJsonObjectW_putEmitCompact(json,FALSE);
    wprintf(L"JSON request body: %s\n",CkJsonObjectW_emit(json));

    // The JSON response should look like this:
    // { 
    //  "location": {
    //   "lat": 37.4248297,
    //   "lng": -122.07346549999998
    //  },
    //  "accuracy": 1145.0
    // }

    wprintf(L"JSON response: %s\n",responseJson);

    jsonResp = CkJsonObjectW_Create();
    CkJsonObjectW_Load(jsonResp,responseJson);

    jsonLoc = CkJsonObjectW_Create();
    CkJsonObjectW_ObjectOf2(jsonResp,L"location",jsonLoc);

    // Any JSON value can be obtained as a string..
    latitude = CkJsonObjectW_stringOf(jsonLoc,L"lat");
    wprintf(L"latitude = %s\n",latitude);
    longitude = CkJsonObjectW_stringOf(jsonLoc,L"lng");
    wprintf(L"longitude = %s\n",longitude);

    accuracy = CkJsonObjectW_stringOf(jsonResp,L"accuracy");
    wprintf(L"accuracy = %s\n",accuracy);


    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);
    CkJsonArrayW_Dispose(aCellTowers);
    CkJsonObjectW_Dispose(oCellTower);
    CkJsonArrayW_Dispose(aWifi);
    CkJsonObjectW_Dispose(oPoint);
    CkJsonObjectW_Dispose(jsonResp);
    CkJsonObjectW_Dispose(jsonLoc);

    }