/*
 * #%L
 * Image processing operations for SciJava Ops.
 * %%
 * Copyright (C) 2014 - 2024 SciJava developers.
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 * modification, are permitted provided that the following conditions are met:
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package org.scijava.ops.image.copy;

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.junit.jupiter.api.Test;
import org.scijava.util.MersenneTwisterFast;

import org.scijava.ops.image.AbstractOpTest;
import net.imglib2.Cursor;
import net.imglib2.RandomAccess;
import net.imglib2.RandomAccessibleInterval;
import net.imglib2.img.Img;
import net.imglib2.img.array.ArrayImgFactory;
import net.imglib2.img.cell.CellImgFactory;
import net.imglib2.img.planar.PlanarImgFactory;
import net.imglib2.type.numeric.RealType;
import net.imglib2.type.numeric.integer.UnsignedByteType;

/**
 * Test copying of various Image types
 *
 * @author Christian Dietz (University of Konstanz)
 */
public class CopyImgsTest extends AbstractOpTest {

	private <T extends RealType<T>> void populateData(Img<T> data) {
		final MersenneTwisterFast r = new MersenneTwisterFast(System
			.currentTimeMillis());
		final Cursor<T> inc = data.cursor();
		while (inc.hasNext()) {
			inc.next().setReal(r.nextDouble() * 255);
		}
	}

	@Test
	public void testCopyArrayImgNoOutput() {
		var data = new ArrayImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		@SuppressWarnings("unchecked")
		final RandomAccessibleInterval<UnsignedByteType> output =
			(RandomAccessibleInterval<UnsignedByteType>) ops.op("copy.img").input(
				data).apply();

		final Cursor<UnsignedByteType> inc = data.localizingCursor();
		final RandomAccess<UnsignedByteType> outRA = output.randomAccess();

		while (inc.hasNext()) {
			inc.fwd();
			outRA.setPosition(inc);
			assertEquals(inc.get().get(), outRA.get().get());
		}
	}

	@Test
	public void testCopyArrayImgWithOutput() {
		var data = new ArrayImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		final Img<UnsignedByteType> output = data.factory().create(data
			.dimensionsAsLongArray());

		ops.op("copy.img").input(data).output(output).compute();

		final Cursor<UnsignedByteType> inc = data.cursor();
		final Cursor<UnsignedByteType> outc = output.cursor();

		while (inc.hasNext()) {
			assertEquals(outc.next(), inc.next());
		}
	}

	@Test
	public void testCopyPlanarImgNoOutput() {
		var data = new PlanarImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		@SuppressWarnings("unchecked")
		final RandomAccessibleInterval<UnsignedByteType> output =
			(RandomAccessibleInterval<UnsignedByteType>) ops.op("copy.img").input(
				data).apply();

		final Cursor<UnsignedByteType> inc = data.localizingCursor();
		final RandomAccess<UnsignedByteType> outRA = output.randomAccess();

		while (inc.hasNext()) {
			inc.fwd();
			outRA.setPosition(inc);
			assertEquals(inc.get().get(), outRA.get().get());
		}
	}

	@Test
	public void testCopyPlanarImgWithOutput() {
		var data = new PlanarImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		final Img<UnsignedByteType> output = data.factory().create(data
			.dimensionsAsLongArray());

		ops.op("copy.img").input(data).output(output).compute();

		final Cursor<UnsignedByteType> inc = data.cursor();
		final Cursor<UnsignedByteType> outc = output.cursor();

		while (inc.hasNext()) {
			assertEquals(outc.next(), inc.next());
		}
	}

	@Test
	public void testCopyCellImgNoOutput() {
		var data = new CellImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		@SuppressWarnings("unchecked")
		final RandomAccessibleInterval<UnsignedByteType> output =
			(RandomAccessibleInterval<UnsignedByteType>) ops.op("copy.img").input(
				data).apply();

		final Cursor<UnsignedByteType> inc = data.localizingCursor();
		final RandomAccess<UnsignedByteType> outRA = output.randomAccess();

		while (inc.hasNext()) {
			inc.fwd();
			outRA.setPosition(inc);
			assertEquals(inc.get().get(), outRA.get().get());
		}
	}

	@Test
	public void testCopyCellImgWithOutput() {
		var data = new CellImgFactory<>(new UnsignedByteType()).create(10, 10);
		populateData(data);
		final Img<UnsignedByteType> output = data.factory().create(data
			.dimensionsAsLongArray());

		ops.op("copy.img").input(data).output(output).compute();

		final Cursor<UnsignedByteType> inc = data.cursor();
		final Cursor<UnsignedByteType> outc = output.cursor();

		while (inc.hasNext()) {
			assertEquals(outc.next(), inc.next());
		}
	}
}
