view API/Objects/Requirement/RequirementHandler.cs @ 363:506af4cbe3f5

Fixes #33: Add centralised requirement checker * Implement validation with messages for adding (Other features added under #27 and not separately marked)
author IBBoard <dev@ibboard.co.uk>
date Sun, 01 May 2011 19:16:23 +0000
parents 8781e53c59bb
children 676f5ce04176
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// This file (RequirementHandler.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 IBBoard
// 
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
using System;
using System.Collections.Generic;

namespace IBBoard.WarFoundry.API.Objects.Requirement
{
	/// <summary>
	/// The requirement handler that tests the validity of armies.
	/// </summary>
	public class RequirementHandler
	{
		private RequirementHandler()
		{
		}


		public static Validation ValidateArmy(Army army)
		{
			ICollection<string> ignored;
			return ValidateArmy(army, out ignored);
		}

		public static Validation ValidateArmy(Army army, out ICollection<string> failureMessages)
		{
			Validation result = Validation.Passed;
			failureMessages = new List<string>();

			foreach (IRequirement requirement in army.GetRequirements())
			{
				if (!Validates.AsOkay(requirement.ValidatesArmy(army)))
				{
					result = Validation.Failed;
					failureMessages.Add(requirement.GetValidationMessage(army));
				}
			}

			return result;
		}

		public static Validation AllowsAdding(UnitType unitType, Army army)
		{
			ICollection<string> ignored;
			return AllowsAdding(unitType, army, out ignored);
		}

		public static Validation AllowsAdding(UnitType unitType, Army army, out ICollection<string> failureMessages)
		{
			Validation result = Validation.Passed;
			failureMessages = new List<string>();
			
			foreach (IRequirement requirement in army.GetRequirements())
			{
				if (!Validates.AsOkay(requirement.AllowsAdding(unitType, army)))
				{
					result = Validation.Failed;
					failureMessages.Add(requirement.GetAllowsAddingMessage(unitType, army));
				}
			}

			return result;
		}
	}
}