/*-
 * ============LICENSE_START=======================================================
 * ONAP Policy Engine
 * ================================================================================
 * Copyright (C) 2018-2019 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.policy.brms.api;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import javax.persistence.TypedQuery;

import org.apache.maven.model.Dependency;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.onap.policy.api.PolicyException;
import org.onap.policy.utils.BackUpHandler;
import org.onap.policy.utils.BackUpMonitor;
import org.onap.policy.utils.BackUpMonitorException;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
public class BrmsPushTest {
    @Rule
    public ExpectedException thrown = ExpectedException.none();

    @PrepareForTest({Persistence.class, BackUpMonitor.class})
    @Test
    public void testPush() throws BackUpMonitorException, PolicyException {
        // Mock emf, persistence, and query
        final EntityManagerFactory emf = Mockito.mock(EntityManagerFactory.class);
        final EntityManager em = Mockito.mock(EntityManager.class);
        Mockito.when(emf.createEntityManager()).thenReturn(em);
        PowerMockito.mockStatic(Persistence.class);
        PowerMockito.when(Persistence.createEntityManagerFactory(Mockito.any(), Mockito.any())).thenReturn(emf);
        final EntityTransaction et = Mockito.mock(EntityTransaction.class);
        Mockito.when(em.getTransaction()).thenReturn(et);
        final TypedQuery<?> query = Mockito.mock(TypedQuery.class);
        Mockito.when(em.createQuery(Mockito.anyString(), Mockito.any())).thenReturn((TypedQuery<Object>) query);

        // Mock backup monitor
        PowerMockito.mockStatic(BackUpMonitor.class);
        final BackUpMonitor monitor = Mockito.mock(BackUpMonitor.class);
        PowerMockito.when(BackUpMonitor.getInstance(any(), any(), any(), any())).thenReturn(monitor);

        // Test constructor
        final String propFile = "config.properties";
        final BackUpHandler handler = Mockito.mock(BackUpHandler.class);
        final BrmsPush push = new BrmsPush(propFile, handler);
        assertNotNull(push);

        final String name = "testName";
        try {
            // Test initiate
            push.initiate(true);

            // Test reset
            push.resetDs();

            // Test add
            final String rule = "testRule";
            final Map<String, String> responseAttributes = new HashMap<String, String>();
            responseAttributes.put("$controller:", "{\n\"testKey\": \"testVal\"\n}\n");
            responseAttributes.put("$dependency$", "[a,b]");
            push.addRule(name, rule, responseAttributes);
        } catch (final Exception ex) {
            fail("Not expecting an exception: " + ex);
        }

        try {
            // Test remove
            push.removeRule(name);
        } catch (final Exception ex) {
            fail("Not expecting an exception: " + ex);

        }

        // Test misc methods
        final String controllerName = "testController";
        final List<Dependency> deps = push.defaultDependencies(controllerName);
        assertEquals(deps.size(), 6);
        assertNotNull(BrmsPush.getBackUpMonitor());
        assertEquals(push.urlListSize(), 1);

        try {
            push.rotateUrls();
        } catch (final Exception ex) {
            fail("Not expecting an exception: " + ex);
        }

        // Test push
        thrown.expect(PolicyException.class);
        push.pushRules();
    }
}