package net.minecraft.util.debugchart;

public class LocalSampleLogger extends AbstractSampleLogger implements SampleStorage {
	public static final int CAPACITY = 240;
	private final long[][] samples;
	private int start;
	private int size;

	public LocalSampleLogger(final int dimensions) {
		this(dimensions, new long[dimensions]);
	}

	public LocalSampleLogger(final int dimensions, final long[] defaults) {
		super(dimensions, defaults);
		this.samples = new long[240][dimensions];
	}

	@Override
	protected void useSample() {
		int nextIndex = this.wrapIndex(this.start + this.size);
		System.arraycopy(this.sample, 0, this.samples[nextIndex], 0, this.sample.length);
		if (this.size < 240) {
			this.size++;
		} else {
			this.start = this.wrapIndex(this.start + 1);
		}
	}

	@Override
	public int capacity() {
		return this.samples.length;
	}

	@Override
	public int size() {
		return this.size;
	}

	@Override
	public long get(final int index) {
		return this.get(index, 0);
	}

	@Override
	public long get(final int index, final int dimension) {
		if (index >= 0 && index < this.size) {
			long[] sampleArray = this.samples[this.wrapIndex(this.start + index)];
			if (dimension >= 0 && dimension < sampleArray.length) {
				return sampleArray[dimension];
			} else {
				throw new IndexOutOfBoundsException(dimension + " out of bounds for dimensions " + sampleArray.length);
			}
		} else {
			throw new IndexOutOfBoundsException(index + " out of bounds for length " + this.size);
		}
	}

	private int wrapIndex(final int index) {
		return index % 240;
	}

	@Override
	public void reset() {
		this.start = 0;
		this.size = 0;
	}
}