#include "__IMAP_RENAME.h"
#include "IMAPArgs.h"
#include "IMAPServer.h"
#include <filesystem>

namespace mail {

   int __IMAP_RENAME::processCommand(coreutils::ZString &request, IMAPSession &session, IMAPServer &server) {
      if (session.state == IMAPSession::NOT_AUTHENTICATED) {
         session.out << session.tag << " NO Not authenticated" << CRLF;
         return 1;
      }

      coreutils::ZString fromArg = IMAPArgs::nextArgument(request);
      coreutils::ZString toArg = IMAPArgs::nextArgument(request);
      std::string fromName = IMAPArgs::normalizeFolderName(IMAPArgs::unwrap(fromArg));
      std::string toName = IMAPArgs::normalizeFolderName(IMAPArgs::unwrap(toArg));
      coreutils::ZString userNameZ(session.userName);

      if (!IMAPArgs::isValidFolderName(fromName) || !IMAPArgs::isValidFolderName(toName)) {
         session.out << session.tag << " BAD Invalid mailbox name" << CRLF;
         return 1;
      }
      if (fromName == "Inbox") {
         session.out << session.tag << " NO INBOX cannot be renamed" << CRLF;
         return 1;
      }
      if (!server.mailFileSystem.ifFolderExists(userNameZ, fromName)) {
         session.out << session.tag << " NO Mailbox does not exist" << CRLF;
         return 1;
      }
      if (server.mailFileSystem.ifFolderExists(userNameZ, toName)) {
         session.out << session.tag << " NO Destination mailbox already exists" << CRLF;
         return 1;
      }

      std::error_code errorCode;
      std::filesystem::rename(server.mailFileSystem.getFolderPath(userNameZ, fromName).str(),
                               server.mailFileSystem.getFolderPath(userNameZ, toName).str(), errorCode);
      if (errorCode) {
         session.out << session.tag << " NO RENAME failed" << CRLF;
         return 1;
      }

      if (session.state == IMAPSession::SELECTED && session.selectedFolderName == fromName)
         session.selectedFolderName = toName;

      session.out << session.tag << " OK RENAME completed" << CRLF;
      return 1;
   }

}