#pragma once

#include <string>
#include <vector>

namespace ExternalEditor {

// $VISUAL, then $EDITOR, then the first of nano/vim/vi found on PATH.
// Empty if nothing was found.
std::string defaultCommand();

// Is the first word of `command` an executable we can find?
bool commandExists(const std::string& command);

// Well-known editors that are installed (used for tab completion).
std::vector<std::string> installedEditors();

// Opens `initialText` in the editor and returns the edited text.
// Throws std::runtime_error if the editor cannot be run or exits with an error.
std::string edit(const std::string& command, const std::string& initialText);

}  // namespace ExternalEditor