// D V D    I N V E N T O R Y    W O R K F L O W
//===================================================================================
// DVDInventory.txt
//===================================================================================
// Copyright (C) 2007 TrackerRealm Corporation
// This file is part of Jetfire.    http://jetfire.ca
// 
// Jetfire is open software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License.
// 
// Jetfire is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License along with Jetfire.  If not, see http://www.gnu.org/licenses.
// REMOVAL OF THIS NOTICE IS VIOLATION OF THE COPYRIGHT.
//===================================================================================
//
namespace JetfireApps
{
	public workflow DVD
	{
		string onLoanTo;
		DateTime loanedOnDateTime;
		DateTime returnedOnDateTime;
		DateTime lostDateTime;
		string instructions;
		List tags;
		
		// Constructor
		public DVD()
		{
			enterstate this.DVDAtHome();
			this.onLoanTo = "";
			this.tags = new List();
			this.instructions = "Enter the name of the person who borrowed the DVD; Remove the name of the borrower when the DVD is returned";
			this.instructions.Set("Enter zee neme-a ooff zee persun vhu burrooed zee DFD; Remufe-a zee neme-a ooff zee burrooer vhee zee DFD is retoorned", "sw-CH");
		}
		public DVD(string subject)
		{
			this.Subject = subject;
			enterstate this.DVDAtHome();
			this.onLoanTo = "";
			this.tags = new List();
			this.instructions = "Enter the name of the person who borrowed the DVD; Remove the name of the borrower when the DVD is returned";
			this.instructions.Set("Enter zee neme-a ooff zee persun vhu burrooed zee DFD; Remufe-a zee neme-a ooff zee burrooer vhee zee DFD is retoorned", "sw-CH");
		}
		// S T A T E    M E T H O D S
		// State Transition        Command       Comment
		// New -> DVDAtHome        -             The workflow enters the DVDAtHome state when instantiated
		// DVDAtHome -> DVDOnLoan  Borrow        Someone borrows the DVD
		// DVDOnLoan -> DVDAtHome  Return        Someone returns the DVD
		// DVDAtHome -> DVDLost    Lost          Owner 'misplaces' the DVD
		// DVDOnLoan -> DVDLost    Lost			 Borrowed LOST the DVD
		// DVDAtHome -> DVDDead    Broke		 Something BAD happened
		// DVDOnLoan -> DVDDead    Broke		 Something BAD happened
		
		public DVDAtHome()
		{
		}
		public DVDOnLoan()
		{
		}
		public DVDLost()
		{
		}
		public DVDDead()
		{
		}
		// C O M M A N D S
		private void Borrow()
		{
			this.ResetDateTimes();
			this.loanedOnDateTime = DateTime.Now;
			enterstate this.DVDOnLoan();	
		}
		private void Return()
		{
			this.ResetDateTimes();
			this.returnedOnDateTime = DateTime.Now;
			enterstate this.DVDAtHome();
		}
		public void Lost() : states(DVDAtHome, DVDOnLoan)
		{
			this.lostDateTime = DateTime.Now;
			enterstate DVDLost();
		}
		public void Found() : states(DVDLost)
		{
			this.lostDateTime = DateTime.NoDateOrTime;
			if (this.onLoanTo.Length == 0)
			{	this.Return();	}
			if (this.onLoanTo.Length > 0)
			{	this.Borrow();	}
		}
		public void Broke() : states(DVDAtHome, DVDOnLoan)
		{
			enterstate DVDDead();
		}
		private void ResetDateTimes()
		{
			this.returnedOnDateTime = DateTime.NoDateOrTime;
			this.loanedOnDateTime = DateTime.NoDateOrTime;
			this.lostDateTime = DateTime.NoDateOrTime;
		}
		// P R O P E R T I E S
		public string OnLoanTo : states(DVDAtHome, DVDOnLoan)
		{
			get { return this.onLoanTo;		}
			set 
			{
				this.onLoanTo = value;
				if (this.onLoanTo.Length == 0)
				{	this.Return();	}
				if (this.onLoanTo.Length > 0)
				{	this.Borrow();	}
			}
		}
		public DateTime LoanedOnDateTime
		{
			get { return this.loanedOnDateTime;	}
		}
		public DateTime ReturnedOnDateTime
		{
			get { return this.returnedOnDateTime;	}
		}
		public DateTime LostDateTime
		{
			get { return this.lostDateTime;		}
		}
		public string Instructions
		{
			get { return this.instructions;		}
		}
		public List Tags
		{
			get { return this.tags;				}
		}
	}
}