#include <iostream>
#include <vector>

#include <saga/saga.hpp>

#include "joblist.hpp"

class shell 
{
  private:
    // the saga session we work in
    saga::session          session_;

    // the directory we operate on
    std::string                  home_;
    saga::filesystem::directory  cwd_;

    // the job management facility
    std::string            contact_;
    std::string            host_;
    saga::job::service     js_;

    // map of active job pids to saga job ids
    joblist jobs_;

    // the commands
    // - namespace related
    void c_pwd     (std::string = "");
    void c_cd      (std::string = "");
    void c_ls      (std::string = "");
    void c_cp      (std::string = "");
    void c_mv      (std::string = "");
    void c_rm      (std::string = "");
    void c_ln      (std::string = "");
    void c_mkdir   (std::string = "");
    void c_rmdir   (std::string = "");

    // file related
    void c_cat     (std::string = "");

    // job related
    void c_run     (std::string = "");
    void c_run_fg  (std::string = "");
    void c_run_bg  (std::string = "");
    void c_ps      (std::string = "");
    void c_suspend (std::string = "");
    void c_resume  (std::string = "");
    void c_kill    (std::string = "");
    void c_status  (std::string = "");

    void c_set     (std::string = "");
    void c_help    (std::string = "");


    // print shell prompt
    void prompt (std::string text   = "", 
                 std::string marker = "# ");

    // print an error message
    void carp (std::string text = "");

    // re-initialize some shell settings
    void init      (void);

    // helper
    std::string state_to_string 
                   (saga::job::state state);

  public:
    // c'tor/d'tor
    shell (void);
   ~shell (void) { };

    // the main event loop
    void run (void);
};