(Unicode C) Finnhub API - Get Stock Quote

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Note: This example requires Chilkat v11.4.0 or greater.

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#include <C_CkHttpW.h>
#include <C_CkHttpRequestW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    const wchar_t *apiKey;
    const wchar_t *symbol;
    HCkHttpW http;
    const wchar_t *urlWithoutParams;
    HCkHttpRequestW req;
    HCkHttpResponseW resp;
    HCkJsonObjectW json;
    int statusCode;

    success = FALSE;

    // Replace with your actual Finnhub API key.
    apiKey = L"YOUR_FINNHUB_API_KEY";
    symbol = L"AAPL";

    http = CkHttpW_Create();

    // This is the URL without params.
    urlWithoutParams = L"https://finnhub.io/api/v1/quote";

    req = CkHttpRequestW_Create();

    // Add params that will be sent in the URL.
    CkHttpRequestW_AddParam(req,L"symbol",symbol);
    CkHttpRequestW_AddParam(req,L"token",apiKey);

    CkHttpRequestW_putHttpVerb(req,L"GET");

    // Send the request to get the JSON response.
    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpReq(http,urlWithoutParams,req,resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    json = CkJsonObjectW_Create();
    CkHttpResponseW_GetBodyJson(resp,json);

    statusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"response status code: %d\n",statusCode);

    CkJsonObjectW_putEmitCompact(json,FALSE);
    wprintf(L"%s\n",CkJsonObjectW_emit(json));

    // Sample result:

    // {
    //   "c": 248.8,
    //   "d": -4.09,
    //   "dp": -1.6173,
    //   "h": 255.493,
    //   "l": 248.07,
    //   "o": 253.9,
    //   "pc": 252.89,
    //   "t": 1774641600
    // }

    if (statusCode == 200) {
        // Add the symbol to the top of the result.
        CkJsonObjectW_AddStringAt(json,0,L"symbol",symbol);

        // Rename members for clarification.
        CkJsonObjectW_Rename(json,L"c",L"currentPrice");
        CkJsonObjectW_Rename(json,L"d",L"change");
        CkJsonObjectW_Rename(json,L"dp",L"percentChange");
        CkJsonObjectW_Rename(json,L"h",L"high");
        CkJsonObjectW_Rename(json,L"l",L"low");
        CkJsonObjectW_Rename(json,L"o",L"open");
        CkJsonObjectW_Rename(json,L"pc",L"prevClose");
        CkJsonObjectW_Rename(json,L"t",L"unixTime");

        wprintf(L"%s\n",CkJsonObjectW_emit(json));

    }
    else {
        wprintf(L"Failed\n");
    }



    CkHttpW_Dispose(http);
    CkHttpRequestW_Dispose(req);
    CkHttpResponseW_Dispose(resp);
    CkJsonObjectW_Dispose(json);

    }