(C) Emoji Tweet

Demonstrates posting a status update that includes an emoji character.

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#include <C_CkJsonObject.h>
#include <C_CkRest.h>
#include <C_CkOAuth1.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkJsonObject json;
    BOOL success;
    HCkRest rest;
    HCkOAuth1 oauth1;
    BOOL bAutoReconnect;
    HCkStringBuilder sbText;
    const char *resp;
    HCkJsonObject jsonResponse;

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

    // ----------------------------------------------------------------------
    // This initial setup, which involves setting the OAuth1 properties and connecting
    // to api.twitter.com, is only required once at the beginning.  Once connected, the same
    // object instance may be re-used, and if necessary, it will automatically reconnect
    // as needed.

    // Assume we've previously obtained an access token and saved it to a JSON file..
    json = CkJsonObject_Create();
    success = CkJsonObject_LoadFile(json,"qa_data/tokens/twitter.json");

    rest = CkRest_Create();
    oauth1 = CkOAuth1_Create();

    CkOAuth1_putConsumerKey(oauth1,"TWITTER_CONSUMER_KEY");
    CkOAuth1_putConsumerSecret(oauth1,"TWITTER_CONSUMER_SECRET");
    CkOAuth1_putToken(oauth1,CkJsonObject_stringOf(json,"oauth_token"));
    CkOAuth1_putTokenSecret(oauth1,CkJsonObject_stringOf(json,"oauth_token_secret"));
    CkOAuth1_putSignatureMethod(oauth1,"HMAC-SHA1");
    CkOAuth1_GenNonce(oauth1,16);

    CkRest_SetAuthOAuth1(rest,oauth1,FALSE);

    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"api.twitter.com",443,TRUE,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkJsonObject_Dispose(json);
        CkRest_Dispose(rest);
        CkOAuth1_Dispose(oauth1);
        return;
    }

    // This ends the initial setup...
    // ----------------------------------------------------------------------

    // For this example, I've pre-created a text file containing two emoji
    // characters (the "ghost" emoji, and a "face savouring delicious food" emoji).  
    // This text file was saved using the utf-8 encoding.

    // The utf-8 bytes for the ghost emoji are 0x9f 0x91 0xbb.  (Note: This is the utf-8
    // representation that does not use surrogate pairs.)
    // 
    // The utf-8 bytes for the "face savouring delicious food" emoji are \xF0\x9F\x98\x8B.

    sbText = CkStringBuilder_Create();
    CkStringBuilder_LoadFile(sbText,"qa_data/txt/ghost_emoji.txt","utf-8");
    CkStringBuilder_Prepend(sbText,"Test tweet using two emoji chars: ");

    // Send a tweet...
    CkRest_ClearAllQueryParams(rest);
    CkRest_AddQueryParam(rest,"status",CkStringBuilder_getAsString(sbText));
    resp = CkRest_fullRequestFormUrlEncoded(rest,"POST","/1.1/statuses/update.json");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkJsonObject_Dispose(json);
        CkRest_Dispose(rest);
        CkOAuth1_Dispose(oauth1);
        CkStringBuilder_Dispose(sbText);
        return;
    }

    jsonResponse = CkJsonObject_Create();
    CkJsonObject_putEmitCompact(jsonResponse,FALSE);
    CkJsonObject_Load(jsonResponse,resp);

    if (CkRest_getResponseStatusCode(rest) != 200) {
        printf("%s\n",CkJsonObject_emit(jsonResponse));
        CkJsonObject_Dispose(json);
        CkRest_Dispose(rest);
        CkOAuth1_Dispose(oauth1);
        CkStringBuilder_Dispose(sbText);
        CkJsonObject_Dispose(jsonResponse);
        return;
    }

    // Show the successful response:
    printf("%s\n",CkJsonObject_emit(jsonResponse));
    printf("Success.\n");


    CkJsonObject_Dispose(json);
    CkRest_Dispose(rest);
    CkOAuth1_Dispose(oauth1);
    CkStringBuilder_Dispose(sbText);
    CkJsonObject_Dispose(jsonResponse);

    }