/**
 * ============LICENSE_START====================================================
 * org.onap.aaf
 * ===========================================================================
 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
 * ===========================================================================
 * Licensed 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.
 * ============LICENSE_END====================================================
 */

package org.onap.aaf.cadi.util.test;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;

import javax.xml.ws.Holder;

import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.onap.aaf.cadi.CadiException;
import org.onap.aaf.cadi.util.CSV;
import org.onap.aaf.cadi.util.CSV.Visitor;
import org.onap.aaf.cadi.util.CSV.Writer;

public class JU_CSV {

	private String filename;
	private File file;
	private static ArrayList<Object> expected;

	@Before
	public void start() {
		filename = "Sample.csv";
		file = new File(filename);
	}
	
	@After
	public void end() {
		if(file!=null) {
			file.delete();
		}
	}

	@BeforeClass
	public static void before() {
		expected = new ArrayList<>();
	}
	
	@Test
	public void test() throws IOException, CadiException {
		CSV csv = new CSV(file);
		// Can't visit for file that doesn't exist
		try {
			csv.visit(new Visitor() {
				@Override
				public void visit(List<String> row) {
				}});
		} catch(IOException e) {
			Assert.assertTrue("CSV correctly created exception",true);
		}
		
		Writer writer = csv.writer();
		try {
			writer.row(add("\"hello\""));
			writer.comment("Ignore Comments");
			writer.row(add("dXNlcjpwYXNzd29yZA=="),add("dXNlckBzb21ldGhpbmcub3JnOm90aGVyUGFzc3dvcmQ="));
			writer.row(); // no output
			writer.row(add("There is, but one thing to say"), add(" and that is"), add("\"All the best\""));
		} finally {
			writer.close();
		}
		
		PrintStream garbage = new PrintStream(new FileOutputStream(file, true));
		try {
			garbage.println("# Ignore empty spaces, etc");
			garbage.println("   ");
			garbage.println("# Ignore blank lines");
			garbage.println();
		} finally {
			garbage.close();
		}

	
	//////////// 
	// Tests
	////////////
		final Holder<Integer> hi = new Holder<>(0);
		csv.visit(new CSV.Visitor() {
			@Override
			public void visit(List<String> row) {
				for(String s: row) {
//					System.out.println(hi.value + ") " + s);
					Assert.assertEquals(expected.get(hi.value++),s);
				}
			}
		});

	}

	private String add(String s) {
		expected.add(s);
		return s;
	}

}