#include "common.h"

#include <string>
#include <memory>

#include "Cookie.h"
#include "WrDiskCacheEntry.h"
#include "GroupId.h"

namespace aria2 {

class MessageDigest;
class RequestGroupMan;
class RequestGroup;
class Option;
struct DownloadResult;

void createFile(const std::string& filename, size_t length);

std::string readFile(const std::string& path);

class CookieSorter {
public:
  bool operator()(const Cookie* lhs, const Cookie* rhs) const
  {
    if(lhs->getDomain() == rhs->getDomain()) {
      return lhs->getName() < rhs->getName();
    } else {
      return lhs->getDomain() < rhs->getDomain();
    }
  }
};

std::unique_ptr<Cookie> createCookie
(const std::string& name,
 const std::string& value,
 const std::string& domain,
 bool hostOnly,
 const std::string& path,
 bool secure);

std::unique_ptr<Cookie> createCookie
(const std::string& name,
 const std::string& value,
 time_t expiryTime,
 const std::string& domain,
 bool hostOnly,
 const std::string& path,
 bool secure);

std::string fromHex(const std::string& s);

// Returns hex digest of contents of file denoted by filename.
std::string fileHexDigest(MessageDigest* ctx, const std::string& filename);

WrDiskCacheEntry::DataCell* createDataCell(int64_t goff,
                                           const char* data,
                                           size_t offset = 0);

std::shared_ptr<RequestGroup> findReservedGroup
(RequestGroupMan* rgman, a2_gid_t gid);

std::shared_ptr<RequestGroup> getReservedGroup
(RequestGroupMan* rgman, size_t index);

std::shared_ptr<RequestGroup> createRequestGroup(int32_t pieceLength,
                                              int64_t totalLength,
                                              const std::string& path,
                                              const std::string& uri,
                                              const std::shared_ptr<Option>& opt);

std::shared_ptr<DownloadResult> createDownloadResult
(error_code::Value result, const std::string& uri);

namespace {
template<typename V, typename T>
bool derefFind(const V& v, const T& t)
{
  for(auto i : v) {
    if(*i == *t) {
      return true;
    }
  }
  return false;
}
} // namespace

} // namespace aria2