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path: root/src/main/java/gregtech/api/util/GT_ExoticEnergyInputHelper.java
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package gregtech.api.util;

import gregtech.api.interfaces.metatileentity.IMetaTileEntity;
import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import static gregtech.api.metatileentity.implementations.GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity;

public class GT_ExoticEnergyInputHelper {
	/**
	 * The Valid Types of TecTech Hatch List.
	 */
	private static final List<Class<? extends GT_MetaTileEntity_Hatch>> sExoticEnergyHatchType = new ArrayList<>();

	static {
		tryRegister("com.github.technus.tectech.thing.metaTileEntity.hatch.GT_MetaTileEntity_Hatch_EnergyMulti");
		tryRegister("com.github.technus.tectech.thing.metaTileEntity.hatch.GT_MetaTileEntity_Hatch_EnergyTunnel");
	}

	public static void register(Class<? extends GT_MetaTileEntity_Hatch> clazz) {
		if (!GT_MetaTileEntity_Hatch.class.isAssignableFrom(clazz))
			throw new IllegalArgumentException(clazz.getName() + " is not a subclass of " + GT_MetaTileEntity_Hatch.class.getName());
		sExoticEnergyHatchType.add(clazz);
	}

	@SuppressWarnings("unchecked")
    public static void tryRegister(String className) {
		Class<?> clazz;
		try {
			clazz = Class.forName(className);
		} catch (ClassNotFoundException e) {
			return;
		}
		if (!GT_MetaTileEntity_Hatch.class.isAssignableFrom(clazz))
			throw new IllegalArgumentException(clazz.getName() + " is not a subclass of " + GT_MetaTileEntity_Hatch.class.getName());
		sExoticEnergyHatchType.add((Class<? extends GT_MetaTileEntity_Hatch>) clazz);
	}

	public static boolean drainEnergy(long aEU, Collection<? extends GT_MetaTileEntity_Hatch> hatches) {
		for (GT_MetaTileEntity_Hatch tHatch : hatches) {
			long tDrain = Math.min(tHatch.getBaseMetaTileEntity().getStoredEU(), aEU);
			tHatch.getBaseMetaTileEntity().decreaseStoredEnergyUnits(tDrain, false);
			aEU -= tDrain;
		}
		return aEU <= 0;
	}

	public static boolean isExoticEnergyInput(IMetaTileEntity aHatch) {
		for (Class<?> clazz : sExoticEnergyHatchType) {
			if (clazz.isInstance(aHatch))
				return true;
		}
		return false;
	}

	public static long getMaxInputVoltageMulti(Collection<? extends GT_MetaTileEntity_Hatch> hatches) {
		long rVoltage = 0;
		for (GT_MetaTileEntity_Hatch tHatch : hatches)
			if (isValidMetaTileEntity(tHatch)) rVoltage += tHatch.getBaseMetaTileEntity().getInputVoltage();
		return rVoltage;
	}

	public static long getMaxInputAmpsMulti(Collection<? extends GT_MetaTileEntity_Hatch> hatches) {
		long rAmp = 0;
		for (GT_MetaTileEntity_Hatch tHatch : hatches)
			if (isValidMetaTileEntity(tHatch)) rAmp += tHatch.getBaseMetaTileEntity().getInputAmperage();
		return rAmp;
	}

    public static List<Class<? extends GT_MetaTileEntity_Hatch>> getAllClasses() {
        return Collections.unmodifiableList(sExoticEnergyHatchType);
    }
}