/***********************************************************************---------------------------------------------------------------------------*
 * PROGRAM: assignment2.cpp                                                                                                                         *
 *    This is a menu driven calendar schedule program application
 *    that alows the user to create up to 31 days of storage for an event.
 *	  Users can create a new event by adding a new day, time, and event.  ******CHANGE ALL OF THISSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS****
 *	  The user has the option to see all events scheduled.
 *	  The user has the option to see all the events scheduled in a given range.
 *
 * AUTHOR: Jonathan Sell
 * Date: 01/25/2012
 ***********************************************************************/
#include <iostream>
#include <string.h>

using namespace std;
/***********************************************************************
 * NAME: calandarSchedule
 * INPUT: None.
 * OUTPUT: None.
 * FUNCTION:  Creates the struct of type calendarSchedule
 ***********************************************************************/
 class Calendar {

 public:

    int dayNumberChoice;
    int time;       //time is stored in mins from midnight
    char eventNameChoice[6];
    };



class linkedListClass {

public:

  linkedListClass(int newvalue) {
    myCalendar = newvalue;
    next = NULL;
  }

  linkedListClass(int newvalue, linkedListClass *newNext) {
    myCalendar = newvalue;
    next = newNext;
  }

  int getdvalue() {
    return (myCalendar);
  }

  void addAfter(int newvalue) {
    linkedListClass *newnode = new linkedListClass(newvalue);

    newnode -> next = next;
    next = newnode;
  }

  void printlist() {
    cout << "\tcurrent node is " << myCalendar << endl;
    if (next != NULL)
      next->printlist();
  }

private:
  ;
  Calendar myCalendar;
  linkedListClass *next;

};

class realList {
public:
  realList() {
    first = NULL;
  }

  realList(int nodevalue) {
    first = new linkedListClass(nodevalue);
  }

  void addbehind(int newvalue) {

    if (first == NULL)
      first = new linkedListClass(newvalue);
    else
      first->addAfter(newvalue);
  }

  void addinfront(int newvalue) {
    linkedListClass *newnode;

    if (first == NULL)
      first =  new linkedListClass(newvalue);
    else {
      newnode =  new linkedListClass(newvalue, first);
      first = newnode;
    }
  }

  int getdvalue() {
    if (first == NULL)
      return -1;
    else
      return(first->getdvalue());
  }

  void printlist() {
    if (first == NULL)
      cout << "The List is currently empty.\n";
    else {
      cout << "\nHere is the current list: \n";
      first->printlist();
    }
  }

private:

  linkedListClass *first;
};



    void processMenuChoiceTwo();
	void processMenuChoiceThree();
    void printTime(int time);
    int dayNumber, menuChoice, startDay, endDay, eventSched = 0;
 /***********************************************************************
 * NAME: main
 * INPUT: User enters a menu choice and/or additional entries depending on menu choice.
		  Including a day number, time, and event.
 * OUTPUT: All scheduled events: Day, Time, Event.
 * FUNCTION:  Gives the user a menu to choose which operation to execute.
			  User can store 1 event per day, with 31 days of storage.
			  Event is stored in the following format: Day, Time 00:00, and Event Name
 ***********************************************************************/
    int main()
    {

      cout << "Welcome to my calendar program!\n";

      do
      {
            cout << "Please select an option:" << endl;
            cout << " 1. Add a new event" << endl;
            cout << " 2. Display all scheduled events" << endl;
            cout << " 3. Display events within range" << endl;
            cout << " 4. Quit program" << endl;
            cin >> menuChoice;


        if(menuChoice == 1)
        {  cout <<"Please enter the day number:" << endl;
                    cin >> dayNumber;

					 if(dayNumber >=1 && dayNumber <=31)
					{
                        char input[4];
                        int mins, hours;

                       dayNumberChoice = dayNumber;
                        cout << "Please enter the time in 24 hour notation:" << endl;
                        cin >> input;

                        sscanf (input,"%i:%i",&hours,&mins); // parses the hours and minutes

						if(hours < 01 || hours > 24 || mins < 0 || mins > 59)
						{
							cout << "Please enter a valid time in 24 hour format 00:00." << endl;
							cout << "Hour values: 00-24, Minute values: 00-59" << endl;

						}


						else
						{Test[dayNumber].time = (hours*60)+mins; // converts 24 hour time format to minutes from midnight
						}

                        cout << "Please enter the name of the event:" << endl;
                        cin >> Test[dayNumber].eventNameChoice;

                        eventSched++;
                    }
                    else
                    {
					  cout << "Please enter a valid day between 1-31" << endl;
                    }

      }
                    else if(menuChoice == 2)
					{ processMenuChoiceTwo();
                    }
                   else if(menuChoice == 3)
                    { processMenuChoiceThree();
					}
                    else if(menuChoice == 4)
                    { cout << "Good Bye!" << endl;
                    }
                    else
                    { cout << "You chose an invalid entry." << endl;
                    }

             }while(menuChoice!=4);
	}



	void processMenuChoiceTwo()
	{
		 if( eventSched == 0)
         {cout << "There are no scheduled events." << endl;
         }
         else
         {
			 for(int i = 1; i <= 31; i++)
			 {
			  if(Test[i].time)
			  {cout << "Day " << Test[i].dayNumberChoice << " Time: " << Test[i].time << " Event: " << Test[i].eventNameChoice << endl;
              }

             }

		 }
	}

	void processMenuChoiceThree()
	{
		cout << "Please enter the start day:" << endl;
        cin >> startDay;

		if(startDay <=0 || startDay > 31)
		{	cout << "Please enter a valid day 1-31." << endl;
		}
		else
		{cout << "Please enter the end day:" << endl;
		 cin >> endDay;
		}
		if(endDay <= 0 || endDay > 31)
		{cout << "Please enter a valid day 1-31" << endl;
		}
		else
		{
			for(int i = startDay; i <= endDay; i++)
			{
				if(Test[i].time)
				{cout << "Day " << i << " Time: ";
				 printTime(Test[i].time);
				 cout << " Event: " << Test[i].eventNameChoice << endl;
			    }
			}
		}
	}

 /***********************************************************************
 * NAME: printTime
 * INPUT: Minutes from Midnight variable time.
 * OUTPUT: The time in 24 hour notation.
 * FUNCTION:  This method converts the variable time, which is stored as minutes from midnight, back to it's original 24 hour format 00:00
 ***********************************************************************/

    void printTime(int time)
    {
            char out[6];
            int mins;
            int hours;

            mins =  time%60;
            hours = time/60;
            sprintf (out, "%02d:%02d", hours, mins);
            cout << out;
    }