/** Driver.java for schedule program.
 *  Read the class schedlue, and create a list of rooms.
 *  For each room, keep track of when it is used between 8 and 2.
 *  I'm looking to see which rooms are available during which hours
 *    on any day.  For example, I need to find a room that is always
 *    empty at 10am.
 */
import  java.io.*;
import java.util.*;

public class Driver
{
  public static void main(String [] args) throws IOException
  {
    BufferedReader in = new BufferedReader(new FileReader("spr07.txt"));
    PrintWriter out = new PrintWriter(new FileWriter("spr07.out"));
    ArrayList<Room> roomList = new ArrayList<Room>();

    // Read input.
    while (true)
    {
      String line = in.readLine();
      if (line == null)
        break;
      if (line.equals(""))
        continue;
      if (line.charAt(0) == ' ')
        continue;

      // course section [8,21) variable size "CS-12-A"
      // begin time [61,68)    fixed size "10:00AM"
      // end time [72,79)      fixed size "10:50AM"
      // room location [89,99) variable size "RLY 1000"
      String section = line.substring(8,21).trim();
      String begin = line.substring(61,68);
      String end = line.substring(72,79);
      String location = line.substring(89,99).trim();

      // Some classes are missing a time and/or location.
      // To be helpful, I need to know both time & place.
      if (begin.length() == 0 || location.length() == 0 ||
          begin.charAt(0) == ' ' || location.charAt(0) == ' ')
        continue;

      //System.out.println(section + "," + begin + "," + end + "," + location);

      // To make this easier, let's assume discrete hours.  If a class 
      // meets 10:15 to 11:30, let's say it occupies the 10 and 11 hours.
      // I'm only interested in the 6 hours 8,9,10,11,12,1.
      // When we read a line of section info (section, begin, end, location)
      // 1.  See if room already exists.  If not, create a new room.
      // 2.  Add this section to the room's time reservations.  The section
      //     string needs to be inserted into the room's array of times.
      //     Usually a class occupies one time slot, but it could be more.
      //     And it's possible for 2 classes to be in same slot (on diff days),
      //     so it needs to be an append if there is already a class scheduled
      //     in that room at that time.
      //     * One minor difficulty is the AM/PM switch and 1:00 = 13:00
      // When done reading in, print all rooms (row), 
      //   and sections by hour (column)
      //   This can be done by room's toString().

      Room r = null;
      for (int i = 0; i < roomList.size(); ++i)
        if (roomList.get(i).getName().equals(location))
        {
          r = roomList.get(i);
          break;
        }
      if (r == null)
      {
        r = new Room(location);
        roomList.add(r);
      }

      int beginHour = Integer.parseInt(begin.substring(0,2));
      if (beginHour == 1)
        beginHour = 13;
      int endHour = Integer.parseInt(end.substring(0,2));
      if (endHour == 1)
        endHour = 13;

      // Ignore all hours outside the 6-hour 8-1 inclusive.
      for (int i = beginHour; i <= endHour; ++i)
      {
        if (i < 8 || i > 13)
          continue;
        r.addClass(section, i);
      }
    }

    // Alphabetize rooms.
    Collections.sort(roomList, new RoomComparator());

    // output
    out.println("Room      8:00       9:00      10:00      11:00      12:00       1:00");
    out.println("------------------------------------------------------------------------");
    for (int i = 0; i < roomList.size(); ++i)
      out.println(roomList.get(i));

    in.close();
    out.close();
  }
}