#ifndef FTXUI_COMPONENT_TERMINAL_INPUT_PARSER
#define FTXUI_COMPONENT_TERMINAL_INPUT_PARSER

#include "ftxui/component/event.hpp"
#include "ftxui/component/receiver.hpp"

#include <string>

namespace ftxui {

// Parse a sequence of |char| accross |time|. Produces |Event|.
class TerminalInputParser {
 public:
  TerminalInputParser(Sender<Event> out);
  void Timeout(int time);
  void Add(char c);

 private:
  unsigned char Current();
  bool Eat();

  enum Type {
    UNCOMPLETED,
    DROP,
    CHARACTER,
    SPECIAL,
    MOUSE_UP,
    MOUSE_MOVE,
    MOUSE_LEFT_DOWN,
    MOUSE_LEFT_MOVE,
    MOUSE_RIGHT_DOWN,
    MOUSE_RIGHT_MOVE,
  };

  struct Mouse {
    int x;
    int y;
    Mouse(int x, int y) : x(x), y(y) {}
  };

  struct Output {
    Type type;
    union {
      Mouse mouse;
    };

    Output(Type type) : type(type) {}
    Output(Type type, int x, int y) : type(type), mouse(x, y) {}
  };

  void Send(Output type);
  Output Parse();
  Output ParseUTF8();
  Output ParseESC();
  Output ParseDCS();
  Output ParseCSI();
  Output ParseOSC();
  Output ParseMouse(std::vector<int> arguments);

  Sender<Event> out_;
  int position_ = -1;
  int timeout_ = 0;
  std::string pending_;
};

}  // namespace ftxui

#endif /* end of include guard: FTXUI_COMPONENT_TERMINAL_INPUT_PARSER */

// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.