/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sysds.test.functions.lineage;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.junit.Test;
import org.apache.sysds.runtime.controlprogram.caching.MatrixObject;
import org.apache.sysds.runtime.instructions.cp.Data;
import org.apache.sysds.runtime.instructions.cp.ScalarObject;
import org.apache.sysds.runtime.lineage.Lineage;
import org.apache.sysds.runtime.lineage.LineageItem;
import org.apache.sysds.runtime.lineage.LineageItemUtils;
import org.apache.sysds.runtime.lineage.LineageParser;
import org.apache.sysds.runtime.matrix.data.MatrixBlock;
import org.apache.sysds.runtime.matrix.data.MatrixValue.CellIndex;
import org.apache.sysds.test.AutomatedTestBase;
import org.apache.sysds.test.TestConfiguration;
import org.apache.sysds.test.TestUtils;

public class LineageTraceExecTest extends AutomatedTestBase {
	
	protected static final String TEST_DIR = "functions/lineage/";
	protected static final String TEST_NAME1 = "LineageTraceExec1"; //rand - matrix result
	protected static final String TEST_NAME2 = "LineageTraceExec2"; //rand - scalar result
	protected static final String TEST_NAME3 = "LineageTraceExec3"; //read - matrix result
	protected static final String TEST_NAME4 = "LineageTraceExec4"; //rand - matrix result - unspecified seed
	protected static final String TEST_NAME5 = "LineageTraceExec5"; //rand - scalar result - unspecified seed
	protected static final String TEST_NAME6 = "LineageTraceExec6"; //nary rbind
	
	protected String TEST_CLASS_DIR = TEST_DIR + LineageTraceExecTest.class.getSimpleName() + "/";
	
	protected static final int numRecords = 10;
	protected static final int numFeatures = 5;
	
	public LineageTraceExecTest() {
		
	}
	
	@Override
	public void setUp() {
		TestUtils.clearAssertionInformation();
		addTestConfiguration( TEST_NAME1, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME1, new String[] {"R"}) );
		addTestConfiguration( TEST_NAME2, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME2, new String[] {"R"}) );
		addTestConfiguration( TEST_NAME3, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME3, new String[] {"R"}) );
		addTestConfiguration( TEST_NAME4, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME4, new String[] {"R"}) );
		addTestConfiguration( TEST_NAME5, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME5, new String[] {"R"}) );
		addTestConfiguration( TEST_NAME6, new TestConfiguration(TEST_CLASS_DIR, TEST_NAME6, new String[] {"R"}) );
	}
	
	@Test
	public void testLineageTraceExec1() {
		testLineageTraceExec(TEST_NAME1);
	}
	
	@Test
	public void testLineageTraceExec2() {
		testLineageTraceExec(TEST_NAME2);
	}
	
	@Test
	public void testLineageTraceExec3() {
		testLineageTraceExec(TEST_NAME3);
	}
	
	@Test
	public void testLineageTraceExec4() {
		testLineageTraceExec(TEST_NAME4);
	}
	
	@Test
	public void testLineageTraceExec5() {
		testLineageTraceExec(TEST_NAME5);
	}
	
	@Test
	public void testLineageTraceExec6() {
		testLineageTraceExec(TEST_NAME6);
	}
	
	private void testLineageTraceExec(String testname) {
		System.out.println("------------ BEGIN " + testname + "------------");
		
		getAndLoadTestConfiguration(testname);
		List<String> proArgs = new ArrayList<>();
		
		proArgs.add("-lineage");
		proArgs.add("-args");
		proArgs.add(input("X"));
		proArgs.add(output("R"));
		proArgs.add(String.valueOf(numRecords));
		proArgs.add(String.valueOf(numFeatures));
		programArgs = proArgs.toArray(new String[proArgs.size()]);
		fullDMLScriptName = getScript();
		
		if( testname.equals(TEST_NAME3) || testname.equals(TEST_NAME6) ) {
			double[][] X = getRandomMatrix(numRecords, numFeatures, 0, 1, 0.8, -1);
			writeInputMatrixWithMTD("X", X, true);
		}
		
		Lineage.resetInternalState();
		//run the test
		runTest(true, EXCEPTION_NOT_EXPECTED, null, -1);
		
		//get lineage and generate program
		String Rtrace = readDMLLineageFromHDFS("R");
		LineageItem R = LineageParser.parseLineageTrace(Rtrace);
		Data ret = LineageItemUtils.computeByLineage(R);
		
		if( testname.equals(TEST_NAME2) || testname.equals(TEST_NAME5)) {
			double val1 = readDMLScalarFromHDFS("R").get(new CellIndex(1,1));
			double val2 = ((ScalarObject)ret).getDoubleValue();
			TestUtils.compareScalars(val1, val2, 1e-6);
		}
		else {
			HashMap<CellIndex, Double> dmlfile = readDMLMatrixFromHDFS("R");
			MatrixBlock tmp = ((MatrixObject)ret).acquireReadAndRelease();
			TestUtils.compareMatrices(dmlfile, tmp, 1e-6);
		}
	}
}