#include <iostream>
#include <vector>

#include <saga/saga.hpp>

#include "joblist.hpp"

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

    // the directory we operate on
    std::string                 home_;
    saga::name_space::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_touch         (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 = "");

    // logical_file related
    void c_log_find      (std::string = "");
    void c_log_list      (std::string = "");
    void c_log_add       (std::string = "");
    void c_log_remove    (std::string = "");
    void c_log_update    (std::string = "");
    void c_log_replicate (std::string = "");
    

    // job related
    void c_run           (std::string = "");
    void c_run2          (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 = "", bool is_error = true);

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

    // helper
    std::string 
         state_to_string (saga::job::state state);
    void usleep          (long int usec);

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

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