(C) Simple REST Example

Demonstrates a very simple RESTful API call to get a stock time series daily (quotes) from Alpha Vantage.

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#include <C_CkRest.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    BOOL success;
    const char *responseJson;

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

    rest = CkRest_Create();

    // Connect to the REST server.
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"www.alphavantage.co",port,bTls,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        return;
    }

    // Get a stock quote:
    // Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
    success = CkRest_AddQueryParam(rest,"function","TIME_SERIES_DAILY");
    success = CkRest_AddQueryParam(rest,"symbol","AAPL");
    success = CkRest_AddQueryParam(rest,"apikey","my_api_key");
    responseJson = CkRest_fullRequestNoBody(rest,"GET","/query");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        return;
    }

    printf("%s\n",responseJson);

    // Sample response:
    // {
    //     "Meta Data": {
    //         "1. Information": "Daily Prices (open, high, low, close) and Volumes",
    //         "2. Symbol": "AAPL",
    //         "3. Last Refreshed": "2019-12-06",
    //         "4. Output Size": "Compact",
    //         "5. Time Zone": "US/Eastern"
    //     },
    //     "Time Series (Daily)": {
    //         "2019-12-06": {
    //             "1. open": "267.4800",
    //             "2. high": "271.0000",
    //             "3. low": "267.3000",
    //             "4. close": "270.7100",
    //             "5. volume": "25447644"
    //         },
    //         "2019-12-05": {
    //             "1. open": "263.7900",
    //             "2. high": "265.8900",
    //             "3. low": "262.7300",
    //             "4. close": "265.5800",
    //             "5. volume": "18661343"
    //         },
    //         "2019-12-04": {
    //             "1. open": "261.0700",
    //             "2. high": "263.3100",
    //             "3. low": "260.6800",
    //             "4. close": "261.7400",
    //             "5. volume": "16810388"
    //         },
    // ...
    //         "2019-07-18": {
    //             "1. open": "204.0000",
    //             "2. high": "205.8800",
    //             "3. low": "203.7000",
    //             "4. close": "205.6600",
    //             "5. volume": "18582161"
    //         }
    //     }
    // }


    CkRest_Dispose(rest);

    }