Http.hpp

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#pragma once
 
#include <memory>
 
#include <HttpStatusCodes_C++11.h>
#include <curl/curl.h>
 
constexpr int HTTP_TIMEOUT_MS = 1000;
 
struct curlMemory {
    std::string data;
};
 
struct HTTPStats {
    size_t uploadBytes;
    size_t downloadBytes;
    size_t headerBytes;
    size_t requestBytes;
    long uploadSpeed;
    long downloadSpeed;
    long connectionTime;
    long nameLookupTime;
    long preTransferTime;
    long redirectTime;
    long startTransferTime;
    long totalTime;
};
 
class HTTP {
  private:
    CURL *_curl = curl_easy_init();
    std::unique_ptr<curlMemory> _data = std::make_unique<curlMemory>();
    std::string _hostAddr;
 
    void setCommonFields(const std::string &fullURL, CURLoption method);
 
    void setCommonFields(const std::string &fullURL, CURLoption method, const std::string &payload);
 
    static size_t writeDataCallback(const char *contents, size_t size, size_t nmemb, std::string *userp);
 
    CURLcode performRequest(HttpStatus::Code &statusCode, std::string &receivedData);
 
  public:
    explicit HTTP(std::string addr, int timeoutInMs = HTTP_TIMEOUT_MS);
 
    HTTP(const HTTP & /*unused*/) = delete;
 
    HTTP(HTTP && /*unused*/) = delete;
 
    HTTP &operator=(HTTP /*unused*/) = delete;
 
    HTTP &operator=(HTTP && /*unused*/) = delete;
 
    template <typename T> bool setOption(CURLoption option, T value)
    {
        return curl_easy_setopt(_curl, option, value) == CURLE_OK;
    }
 
    [[nodiscard]] const std::string &getHostAddress() const { return _hostAddr; }
 
    CURLcode sendGETRequest(const std::string &index, std::string &receivedData, HttpStatus::Code &statusCode);
 
    CURLcode sendHEADRequest(const std::string &index, std::string &receivedData, HttpStatus::Code &statusCode);
 
    CURLcode sendPOSTRequest(const std::string &index, const std::string &payload, std::string &receivedData,
                             HttpStatus::Code &statusCode);
 
    CURLcode sendPUTRequest(const std::string &index, const std::string &payload, std::string &receivedData,
                            HttpStatus::Code &statusCode);
 
    HTTPStats getStats();
 
    ~HTTP();
};