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#pragma once
#include "../std/stdint.hpp"
#include "../std/function.hpp"
#include "../std/string.hpp"
#include "../std/vector.hpp"
#include "../std/utility.hpp"
namespace downloader
{
/// Request in progress will be canceled on delete
class HttpRequest
{
public:
enum StatusT
{
EInProgress,
ECompleted,
EFailed
};
/// <current, total>, total can be -1 if size is unknown
typedef pair<int64_t, int64_t> ProgressT;
typedef function<void (HttpRequest &)> CallbackT;
protected:
StatusT m_status;
ProgressT m_progress;
CallbackT m_onFinish;
CallbackT m_onProgress;
explicit HttpRequest(CallbackT const & onFinish, CallbackT const & onProgress);
public:
virtual ~HttpRequest() = 0;
StatusT Status() const { return m_status; }
ProgressT Progress() const { return m_progress; }
/// Either file path (for chunks) or downloaded data
virtual string const & Data() const = 0;
/// Response saved to memory buffer and retrieved with Data()
static HttpRequest * Get(string const & url,
CallbackT const & onFinish,
CallbackT const & onProgress = CallbackT());
/// Content-type for request is always "application/json"
static HttpRequest * PostJson(string const & url, string const & postData,
CallbackT const & onFinish,
CallbackT const & onProgress = CallbackT());
/// Download file to filePath.
/// @param[in] fileSize Correct file size (needed for resuming and reserving).
static HttpRequest * GetFile(vector<string> const & urls,
string const & filePath, int64_t fileSize,
CallbackT const & onFinish,
CallbackT const & onProgress = CallbackT(),
int64_t chunkSize = 512 * 1024,
bool doCleanOnCancel = true);
};
} // namespace downloader
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