/*
 *  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.ivy.plugins.conflict;

import org.apache.ivy.Ivy;
import org.apache.ivy.core.module.id.ModuleRevisionId;
import org.apache.ivy.core.report.ConfigurationResolveReport;
import org.apache.ivy.core.report.ResolveReport;
import org.apache.ivy.core.resolve.IvyNode;
import org.apache.ivy.core.resolve.ResolveOptions;
import org.apache.ivy.util.FileUtil;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.File;
import java.util.Iterator;
import java.util.List;

import static org.junit.Assert.assertEquals;

public class LatestConflictManagerTest {

    private Ivy ivy;

    private File cache;

    @Before
    public void setUp() throws Exception {
        ivy = new Ivy();
        ivy.configure(LatestConflictManagerTest.class.getResource("ivysettings-latest.xml"));
        cache = new File("build/cache");
        cache.mkdirs();
    }

    @After
    public void tearDown() {
        FileUtil.forceDelete(cache);
    }

    /**
     * Test case for IVY-388.
     *
     * @throws Exception if something goes wrong
     * @see <a href="https://issues.apache.org/jira/browse/IVY-388">IVY-388</a>
     */
    @Test
    public void testIvy388() throws Exception {
        ResolveReport report = ivy.resolve(
            LatestConflictManagerTest.class.getResource("ivy-388.xml"), getResolveOptions());

        List<IvyNode> deps = report.getDependencies();
        Iterator<IvyNode> dependencies = deps.iterator();
        String[] confs = report.getConfigurations();
        while (dependencies.hasNext()) {
            IvyNode node = dependencies.next();
            for (String conf : confs) {
                if (!node.isEvicted(conf)) {
                    boolean flag1 = report.getConfigurationReport(conf).getDependency(
                        node.getResolvedId()) != null;
                    boolean flag2 = report.getConfigurationReport(conf).getModuleRevisionIds()
                            .contains(node.getResolvedId());
                    assertEquals("Inconsistent data for node " + node + " in conf " + conf, flag1,
                        flag2);
                }
            }
        }
    }

    /**
     * Test case for IVY-383.
     *
     * @throws Exception if something goes wrong
     * @see <a href="https://issues.apache.org/jira/browse/IVY-383">IVY-383</a>
     */
    @Test
    public void testIvy383() throws Exception {
        ResolveReport report = ivy.resolve(
            LatestConflictManagerTest.class.getResource("ivy-383.xml"), getResolveOptions());
        ConfigurationResolveReport defaultReport = report.getConfigurationReport("default");
        for (ModuleRevisionId mrid : defaultReport.getModuleRevisionIds()) {
            if (mrid.getName().equals("mod1.1")) {
                assertEquals("1.0", mrid.getRevision());
            } else if (mrid.getName().equals("mod1.2")) {
                assertEquals("2.2", mrid.getRevision());
            }
        }
    }

    /**
     * Test case for IVY-407.
     *
     * @throws Exception if something goes wrong
     * @see <a href="https://issues.apache.org/jira/browse/IVY-407">IVY-407</a>
     */
    @Test
    public void testLatestTime1() throws Exception {
        ivy = new Ivy();
        ivy.configure(LatestConflictManagerTest.class.getResource("ivysettings-latest-time.xml"));
        ivy.getSettings().setVariable("ivy.log.conflict.resolution", "true", true);

        // set timestamps, because svn is not preserving this information,
        // and the latest time strategy is relying on it
        long time = System.currentTimeMillis() - 10000;
        new File("test/repositories/1/org1/mod1.2/jars/mod1.2-2.0.jar").setLastModified(time);
        new File("test/repositories/1/org1/mod1.2/jars/mod1.2-2.2.jar")
                .setLastModified(time + 2000);

        ResolveReport report = ivy.resolve(
            LatestConflictManagerTest.class.getResource("ivy-latest-time-1.xml"),
            getResolveOptions());
        ConfigurationResolveReport defaultReport = report.getConfigurationReport("default");
        for (ModuleRevisionId mrid : defaultReport.getModuleRevisionIds()) {
            if (mrid.getName().equals("mod1.1")) {
                assertEquals("1.0", mrid.getRevision());
            } else if (mrid.getName().equals("mod1.2")) {
                assertEquals("2.2", mrid.getRevision());
            }
        }
    }

    @Test
    public void testLatestTime2() throws Exception {
        ivy = new Ivy();
        ivy.configure(LatestConflictManagerTest.class.getResource("ivysettings-latest-time.xml"));
        ivy.getSettings().setVariable("ivy.log.conflict.resolution", "true", true);

        // set timestamps, because svn is not preserving this information,
        // and the latest time strategy is relying on it
        long time = System.currentTimeMillis() - 10000;
        new File("test/repositories/1/org1/mod1.2/jars/mod1.2-2.0.jar").setLastModified(time);
        new File("test/repositories/1/org1/mod1.2/jars/mod1.2-2.2.jar")
                .setLastModified(time + 2000);

        ResolveReport report = ivy.resolve(
            LatestConflictManagerTest.class.getResource("ivy-latest-time-2.xml"),
            getResolveOptions());
        ConfigurationResolveReport defaultReport = report.getConfigurationReport("default");
        for (ModuleRevisionId mrid : defaultReport.getModuleRevisionIds()) {
            if (mrid.getName().equals("mod1.1")) {
                assertEquals("1.0", mrid.getRevision());
            } else if (mrid.getName().equals("mod1.2")) {
                assertEquals("2.2", mrid.getRevision());
            }
        }
    }

    /**
     * Test case for IVY-407 (with transitivity). There are 5 modules A, B, C, D and E.
     * <ol>
     * <li>publish C-1.0.0, C-1.0.1 and C-1.0.2</li>
     * <li>B needs C-1.0.0 : retrieve ok and publish B-1.0.0</li>
     * <li>A needs B-1.0.0 and C-1.0.2 : retrieve ok and publish A-1.0.0</li>
     * <li>D needs C-1.0.1 : retrieve ok and publish D-1.0.0</li>
     * <li>E needs D-1.0.0 and A-1.0.0 (D before A in ivy file) :
     * retrieve failed to get C-1.0.2 from A (get apparently C-1.0.1 from D)</li>
     * </ol>
     *
     * @throws Exception if something goes wrong
     * @see <a href="https://issues.apache.org/jira/browse/IVY-407">IVY-407</a>
     */
    @Test
    public void testLatestTimeTransitivity() throws Exception {
        ivy = new Ivy();
        ivy.configure(LatestConflictManagerTest.class
                .getResource("ivysettings-latest-time-transitivity.xml"));
        ivy.getSettings().setVariable("ivy.log.conflict.resolution", "true", true);

        // set timestamps, because svn is not preserving this information,
        // and the latest time strategy is relying on it
        long time = System.currentTimeMillis() - 10000;
        new File("test/repositories/IVY-407/MyCompany/C/ivy-1.0.0.xml").setLastModified(time);
        new File("test/repositories/IVY-407/MyCompany/C/ivy-1.0.1.xml")
                .setLastModified(time + 2000);
        new File("test/repositories/IVY-407/MyCompany/C/ivy-1.0.2.xml")
                .setLastModified(time + 4000);

        ResolveReport report = ivy.resolve(
            LatestConflictManagerTest.class.getResource("ivy-latest-time-transitivity.xml"),
            getResolveOptions());
        ConfigurationResolveReport defaultReport = report.getConfigurationReport("default");
        for (ModuleRevisionId mrid : defaultReport.getModuleRevisionIds()) {
            switch (mrid.getName()) {
                case "A":
                    assertEquals("A revision should be 1.0.0", "1.0.0", mrid.getRevision());
                    break;
                case "B":
                    // by transitivity
                    assertEquals("B revision should be 1.0.0", "1.0.0", mrid.getRevision());
                    break;
                case "C":
                    assertEquals("C revision should be 1.0.2", "1.0.2", mrid.getRevision());
                    break;
                case "D":
                    assertEquals("D revision should be 1.0.0", "1.0.0", mrid.getRevision());
                    break;
            }
        }
    }

    /**
     * Test case for IVY-1399.
     * Dependency tree:
     * <pre>
     * Mycompany#target;1
     *     MyCompany#A;1
     *         conflicting-dependency#dep;1
     *         OtherCompany#prefers-later;1
     *             conflicting-dependency#dep;2
     *     MyCompany#B;1
     *         MyCompany#A;1
     *             ...
     *         OtherCompany#prefers-later;1
     *             ...
     *         MyCompany#C;1
     *             conflicting-dependency#dep;1
     * </pre>
     *
     * @throws Exception if something goes wrong
     * @see <a href="https://issues.apache.org/jira/browse/IVY-1399">IVY-1399</a>
     */
    @Test
    public void testEvictedModules() throws Exception {
        ivy.configure(LatestConflictManagerTest.class
                .getResource("ivysettings-evicted.xml"));

        ivy.getSettings().setVariable("ivy.log.conflict.resolution", "true", true);
        ResolveReport report = ivy.resolve(
                new File("test/repositories/IVY-1399/MyCompany/target/ivy-1.xml"),
                getResolveOptions());
        report.getConfigurationReport("all");
    }

    private ResolveOptions getResolveOptions() {
        return new ResolveOptions().setValidate(false);
    }
}
