package gregtech.api.interfaces;

public interface ICondition<O> {
	public boolean isTrue(O aObject);
	
	// Utility Classes for adding relations between Conditions.
	
	public static class Not<O> implements ICondition<O> {
		private final ICondition<O> mCondition;
		
		public Not(ICondition<O> aCondition) {
			mCondition = aCondition;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			return !mCondition.isTrue(aObject);
		}
	}
	
	public static class Or<O> implements ICondition<O> {
		private final ICondition<O>[] mConditions;
		
		public Or(ICondition<O>... aConditions) {
			mConditions = aConditions;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			for (ICondition<O> tCondition : mConditions) if (tCondition.isTrue(aObject)) return true;
			return false;
		}
	}
	
	public static class Nor<O> implements ICondition<O> {
		private final ICondition<O>[] mConditions;
		
		public Nor(ICondition<O>... aConditions) {
			mConditions = aConditions;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			for (ICondition<O> tCondition : mConditions) if (tCondition.isTrue(aObject)) return false;
			return true;
		}
	}
	
	public static class And<O> implements ICondition<O> {
		private final ICondition<O>[] mConditions;
		
		public And(ICondition<O>... aConditions) {
			mConditions = aConditions;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			for (ICondition<O> tCondition : mConditions) if (!tCondition.isTrue(aObject)) return false;
			return true;
		}
	}
	
	public static class Nand<O> implements ICondition<O> {
		private final ICondition<O>[] mConditions;
		
		public Nand(ICondition<O>... aConditions) {
			mConditions = aConditions;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			for (ICondition<O> tCondition : mConditions) if (!tCondition.isTrue(aObject)) return true;
			return false;
		}
	}
	
	public static class Xor<O> implements ICondition<O> {
		private final ICondition<O> mCondition1, mCondition2;
		
		public Xor(ICondition<O> aCondition1, ICondition<O> aCondition2) {
			mCondition1 = aCondition1;
			mCondition2 = aCondition2;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			return mCondition1.isTrue(aObject) != mCondition2.isTrue(aObject);
		}
	}
	
	public static class Equal<O> implements ICondition<O> {
		private final ICondition<O> mCondition1, mCondition2;
		
		public Equal(ICondition<O> aCondition1, ICondition<O> aCondition2) {
			mCondition1 = aCondition1;
			mCondition2 = aCondition2;
		}
		
		@Override
		public boolean isTrue(O aObject) {
			return mCondition1.isTrue(aObject) == mCondition2.isTrue(aObject);
		}
	}
}