/** 
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017 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=========================================================
 *
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */

package org.onap.aai.edges;

import static org.junit.Assert.*;

import java.io.InputStream;
import java.util.List;
import java.util.Scanner;

import org.junit.Before;
import org.junit.Test;
import org.onap.aai.edges.enums.EdgeType;

import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.JsonPath;

public class EdgeRuleQueryTest {
	private DocumentContext testRules;
	private String readStart = "$.rules.[?]";
	
	/* **** DATA SETUP **** */
	@Before
	public void setup() {
		InputStream is = getClass().getResourceAsStream("/edgeRules/test.json");

		Scanner scanner = new Scanner(is);
		String json = scanner.useDelimiter("\\Z").next();
		scanner.close();
		
		this.testRules = JsonPath.parse(json);
	}

	/* **** TESTS **** */
	@Test
	public void testFromToSingle() {
		//rule defined from quux to foo
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("quux", "foo").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		
		assertTrue(results.size() == 1);
	}

	@Test
	public void testToFromSingle() {
		//rule defined from quux to foo, this is flipped
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo", "quux").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		
		assertTrue(results.size() == 1);
	}
	
	@Test
	public void testFromToMultiple() {
		//rules have two from foo to bar
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo", "bar").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		assertTrue(results.size() == 2);
	}
	
	@Test
	public void testToFromMultiple() {
		//rules have two from foo to bar
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("bar", "foo").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		
		assertTrue(results.size() == 2);
		assertTrue(!(results.get(0).toString().equals(results.get(1).toString())));
	}
	
	@Test
	public void testJustFrom() {
		//there are 4 foo rules (foo>bar, foo>bar, foo>baz, quux>foo)
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		assertTrue(results.size() == 4);
		
		//there are 2 bar rules
		EdgeRuleQuery q2 = new EdgeRuleQuery.Builder("bar").build();
		List<Object> results2 = testRules.read(readStart, q2.getFilter());
		assertTrue(results2.size() == 2);
	}
	
	@Test
	public void testWithLabel() {
		//there are foo >eats> bar and foo >eatz> bar
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo","bar").label("eatz").build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		assertTrue(results.size() == 1);
		assertTrue(results.get(0).toString().contains("eatz"));
	}
	
	@Test
	public void testCousin() {
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo").edgeType(EdgeType.COUSIN).build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		assertTrue(results.size() == 2);
		
		EdgeRuleQuery q2 = new EdgeRuleQuery.Builder("foo", "bar").edgeType(EdgeType.COUSIN).label("eats").build();
		List<Object> results2 = testRules.read(readStart, q2.getFilter());
		assertTrue(results2.size() == 1);
		assertTrue(results2.get(0).toString().contains("eats"));
		
		EdgeRuleQuery q3 = new EdgeRuleQuery.Builder("foo","quux").edgeType(EdgeType.COUSIN).build();
		List<Object> results3 = testRules.read(readStart, q3.getFilter());
		assertTrue(results3.isEmpty());
	}
	
	@Test
	public void testTree() {
		EdgeRuleQuery q = new EdgeRuleQuery.Builder("foo").edgeType(EdgeType.TREE).build();
		List<Object> results = testRules.read(readStart, q.getFilter());
		assertTrue(results.size() == 2);
	}
}