#ifndef DISPATCHERS_H
#define DISPATCHERS_H

#include <map>
#include <memory>
#include <string>

#include "director.h"
#include "session_common.h"

/*
Item of the day:
class Result {
    // holds unique_ptr or shared_ptr to the "dispatcher"
    // when I'm done -- delete the result, cleaning up
    // the dispatcher

}

 How does this call another?
 How does it return a result?

possibly:  io_service::post( DONE );  !

 */

class Dispatch {
 protected:
  Director &director;
  notifyFunc notify_;

 public:
 std::string name;
  Dispatch(Director &, const char * called=nullptr);
  virtual ~Dispatch();
  bool aborted;
  
  void setNotify(notifyFunc nf);
  void notify(void);

  virtual void activate(void) = 0;
  virtual void deactivate(void);

  const std::string &get_prompt(void);
  void to_server(const std::string &send);
  void to_client(const std::string &send);

  void activate_chain(std::shared_ptr<Dispatch> new_chain);

  // default to chain calls
  void chain_client_input(const std::string &input);
  void chain_server_line(const std::string &line, const std::string &raw_line);
  void chain_server_prompt(const std::string &prompt);
  virtual void client_input(const std::string &input);
  virtual void server_line(const std::string &line, const std::string &raw_line);
  virtual void server_prompt(const std::string &prompt);
};

/*
 * Some options for input:
 *
 * numeric only
 *
 */
class InputDispatch : public Dispatch {
 private:
 public:
  InputDispatch(Director &, const char * called=nullptr);
  ~InputDispatch();

  std::string prompt;
  size_t max_length;
  std::string input;
  bool numeric;
  
  void activate(void) override;
  void deactivate(void) override;

  // optional here
  void server_line(const std::string &line,
                   const std::string &raw_line) override;
  // void server_prompt(const std::string &prompt);
  void client_input(const std::string &cinput) override;
};

class MenuDispatch : public Dispatch {
 private:
  void help(void);
  void menubox(void);
  size_t max_width;
  size_t max_option_width;
  bool instant = false;
  void calculate_widths(void);
  std::string centered(int length, const std::string &);

 public:
  MenuDispatch(Director &, const char * called=nullptr);
  ~MenuDispatch();

  std::string menu_box_color;
  std::string menu_text_color;
  std::string menu_title;
  std::string menu_options_color;
  std::string menu_prompt;
  bool lazy = true;
  std::map<std::string, std::string> menu;
  bool case_sensitive = false;
  std::string input;
  int choice;

  void activate(void) override;
  void deactivate(void) override;

  // optional here
  void server_line(const std::string &line, const std::string &raw_line) override;
  // void server_prompt(const std::string &prompt);
  void client_input(const std::string &cinput) override;
};

class CIMDispatch : public Dispatch {
 public:
  CIMDispatch(Director &, const char * called=nullptr);
  int count;
  
  void activate(void) override;
  void deactivate(void) override;
  void server_line(const std::string &line, const std::string &raw_line) override;
};

class MoveDispatch : public Dispatch {
 public:
  MoveDispatch(Director &, const char * called=nullptr);
  ~MoveDispatch();
  
  sector_type move_to;
  sector_type starting;
  int state;
  int success;
  int warp_pos;
  bool use_express;
  std::string why_failed;
  std::string at_destination;
  std::vector<int> warp_lane;

  void activate(void) override;
  void deactivate(void) override;

  // optional here
  void server_line(const std::string &line, const std::string &raw_line) override;
  void server_prompt(const std::string &prompt) override;
  void client_input(const std::string &input) override;
 private:
  //bool density_clear(density d); // int sector, int density);  
};

class TraderDispatch : public Dispatch {
 private:
 public:
  TraderDispatch(Director &, const char * called=nullptr);
  ~TraderDispatch();

  char foe[4] = "foe";
  bool trade_end_empty;

  // success / failure ?
  bool success;
  std::string why_failed;
  
  /**
   * internal state
   *
   * 1 = <Info> query.
   * 2 = move to active port
   * 3 = trade
   * 4 = if (burnt), stop, otherwise toggle active_port and state = 2
   *
   * NEW: set port[1] to 0 for buy-only ability.
   * Percent 20 doesn't work with Cargo Trans' 250 holds.
   * Maybe look at the amount instead?  If < holds = burnt.
   */
  int state;
  float percent;
  bool buying;
  int initial_offer;
  int last_offer;
  int final_offer;
  int product; // product we are buying/selling 0,1,2 foe.
  int stop_percent;
  bool try_again;
  
  // should this be 0/1 ?  right now it is the port's sector number.
  int active_port;  // port trading with
  // information from the find_best_trades function + others.
  int port[2];
  int active;
  // I don't care about trade type, just trades.
  int type;
  
  buysell trades;
  buysell port_buysell[2];

  void activate(void) override;
  void deactivate(void) override;

  void server_line(const std::string &line,
                   const std::string &raw_line) override;
  void server_prompt(const std::string &prompt) override;
  void client_input(const std::string &cinput) override;
};



class CoreDispatch : public Dispatch {
 public:
  CoreDispatch(Director &, const char * called=nullptr);

  void activate(void) override;
  void deactivate(void) override;

  // optional here
  void server_line(const std::string &line, const std::string &raw_line) override;
  void server_prompt(const std::string &prompt) override;
  void client_input(const std::string &input) override;
};

#endif