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#ifndef ELEVATOR_H

#define ELEVATOR_H

#include <cstdio>

#include <iostream>

#include <unistd.h>

#include <assert.h>

#include <vector>

#include <boost/thread/thread.hpp>

#include <boost/bind.hpp>

/* Custom #defines for just the elevator class */

#define MOVE_UP     0

#define MOVE_DOWN   1

#define IDLE        2

#define ELEVATOR_TIME_MOVE_AMOUNT   0.1

#define ELEVATOR_TIME_DELAY_USEC    500000

#define ELEVATOR_TIME_PAUSE_USEC    50000

class Elevator

{

    public:

        Elevator (int num_floors);

        ~Elevator ();

        // Service Functions

        int floors_above_current ();

        int floors_below_current ();

        void push_button (int floor);

        bool button_is_pushed (int floor);

        // Getters and Setters

        int get_direction ();

        float get_current_floor ();

        // Thread Functions

        void thread_start ();

        void thread_exit ();

        void thread_pause ();

        void thread_unpause ();

    private:

        // Private Functions

        bool near_a_floor ();

        bool near_floor (int floor);

        bool has_floors_to_stop_at ();

        bool should_stop_at_current_floor ();

        // Thread Functions

        void run_elevator_logic ();

        static void thread_entry (const Elevator *me);

        // Private Variables

        int num_floors;

        float current_floor;

        std::vector<bool> stop_at_floors;

        int direction;

        // Thread Variable

        bool terminate;

        bool pause;

};

#endif // ELEVATOR_H