(C++) OpenAI (ChatGTP) Retrieve File Content

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Demonstrate how to retrieve the content of a file from OpenAI. Shows how to download to a file, or instead download to a string in memory.

For more information, see https://platform.openai.com/docs/api-reference/files/retrieve-content

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#include <CkHttp.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;
    bool success;

    // Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
    // This is NOT a real key.  Change the "sk-vi...." to your own key.
    http.put_AuthToken("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");

    const char *file_id = "file-1H4vJq0H775gQVrjWY5jpp15";

    // Download to local file.
    const char *url = "https://api.openai.com/v1/files/{$file_id}/content";
    http.SetUrlVar("file_id",file_id);

    // Note: Free accounts are not able to download files.
    // If using a free account, you'll receive an error response:  "To help mitigate abuse, downloading of fine-tune training files is disabled for free accounts."
    success = http.Download(url,"c:/aaworkarea/mydata.jsonl");
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        std::cout << "Failed" << "\r\n";
        return;
    }

    std::cout << "Downloaded OpenAI file to a local file." << "\r\n";

    // Alternatively, download into a StringBuilder
    CkStringBuilder sbData;
    success = http.DownloadSb(url,sbData,"utf-8");
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        std::cout << "Failed" << "\r\n";
        return;
    }

    std::cout << "Downloaded OpenAI file to a StringBuilder" << "\r\n";

    std::cout << "file content:" << "\r\n";
    std::cout << sbData.getAsString() << "\r\n";
    }