#include "shell.hpp"

// update a given replica location
void shell::c_log_update (std::string args)
{
  // split args into source and target
  std::string src  = args;
  std::string url1 = args;
  std::string url2 = args;

  size_t idx1 = args.find (" ");
  size_t idx2 = args.find (" ", idx1);

  if ( idx1 != 0  && idx1 != std::string::npos  &&
       idx2 != 0  && idx2 != std::string::npos  )
  {
    src.erase (idx1);
    url1.erase (0   , idx1 + 1);
    url2.erase (idx1, idx2 + 1);
  }
  else
  {
    carp ("format: log_add <logical_file> <old> <new>");
    return;
  }

  // sanity checks
  if ( ! cwd_.exists (src) )
  {
    carp ("No such logical file: " + src);
    return;
  }

  if ( cwd_.is_dir (src) )
  {
    carp ("Cannot update replica locations on a directory: " + src);
    return;
  }

  // open the current directory as logical dir
  saga::logical_file::logical_directory dir (cwd_.get_url ());

  // open the logical file
  saga::logical_file::logical_file lf = 
         dir.open (src, saga::logical_file::Write);

  // update the replica location
  lf.update_location (saga::url (url1), 
                      saga::url (url2));

  // logical file and dir close when going out of scope
  return;
}