/**
 * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.controller.sal.rest.impl.test.providers;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.io.File;
import java.io.InputStream;
import java.net.URI;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Collection;
import javax.ws.rs.core.MediaType;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opendaylight.controller.md.sal.rest.common.TestRestconfUtils;
import org.opendaylight.netconf.sal.restconf.impl.NormalizedNodeContext;
import org.opendaylight.restconf.jersey.providers.XmlNormalizedNodeBodyReader;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.common.QNameModule;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import com.google.common.collect.Sets;

public class Draft17XmlBodyReaderTest extends Draft17AbstractBodyReaderTest {

    private final XmlNormalizedNodeBodyReader xmlBodyReader;
    private static SchemaContext schemaContext;
    private static final QNameModule INSTANCE_IDENTIFIER_MODULE_QNAME = initializeInstanceIdentifierModule();

    private static QNameModule initializeInstanceIdentifierModule() {
        try {
            return QNameModule.create(URI.create("instance:identifier:module"),
                    new SimpleDateFormat("yyyy-MM-dd").parse("2014-01-17"));
        } catch (final ParseException e) {
            throw new Error(e);
        }
    }

    public Draft17XmlBodyReaderTest() throws NoSuchFieldException, SecurityException {
        super();
        this.xmlBodyReader = new XmlNormalizedNodeBodyReader();
    }

    @Override
    protected MediaType getMediaType() {
        return new MediaType(MediaType.APPLICATION_XML, null);
    }

    @BeforeClass
    public static void initialization() throws Exception {
        final Collection<File> testFiles = TestRestconfUtils.loadFiles("/instanceidentifier/yang");
        testFiles.addAll(TestRestconfUtils.loadFiles("/modules"));
        testFiles.addAll(TestRestconfUtils.loadFiles("/invoke-rpc"));
        schemaContext = TestRestconfUtils.parseYangSources(testFiles);
        controllerContext.setSchemas(schemaContext);
    }

    @Test
    public void moduleDataTest() throws Exception {
        final DataSchemaNode dataSchemaNode = schemaContext
                .getDataChildByName(QName.create(INSTANCE_IDENTIFIER_MODULE_QNAME, "cont"));
        final YangInstanceIdentifier dataII = YangInstanceIdentifier.of(dataSchemaNode.getQName());
        final String uri = "instance-identifier-module:cont";
        mockBodyReader(uri, this.xmlBodyReader, false);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xmldata.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);
        checkNormalizedNodeContext(returnValue);
        checkExpectValueNormalizeNodeContext(dataSchemaNode, returnValue, dataII);
    }

    @Test
    public void moduleSubContainerDataPutTest() throws Exception {
        final DataSchemaNode dataSchemaNode = schemaContext
                .getDataChildByName(QName.create(INSTANCE_IDENTIFIER_MODULE_QNAME, "cont"));
        final QName cont1QName = QName.create(dataSchemaNode.getQName(), "cont1");
        final YangInstanceIdentifier dataII = YangInstanceIdentifier.of(dataSchemaNode.getQName()).node(cont1QName);
        final DataSchemaNode dataSchemaNodeOnPath = ((DataNodeContainer) dataSchemaNode).getDataChildByName(cont1QName);
        final String uri = "instance-identifier-module:cont/cont1";
        mockBodyReader(uri, this.xmlBodyReader, false);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xml_sub_container.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);
        checkNormalizedNodeContext(returnValue);
        checkExpectValueNormalizeNodeContext(dataSchemaNodeOnPath, returnValue, dataII);
    }

    @Test
    public void moduleSubContainerDataPostTest() throws Exception {
        final DataSchemaNode dataSchemaNode = schemaContext
                .getDataChildByName(QName.create(INSTANCE_IDENTIFIER_MODULE_QNAME, "cont"));
        final QName cont1QName = QName.create(dataSchemaNode.getQName(), "cont1");
        final YangInstanceIdentifier dataII = YangInstanceIdentifier.of(dataSchemaNode.getQName()).node(cont1QName);
        final String uri = "instance-identifier-module:cont";
        mockBodyReader(uri, this.xmlBodyReader, true);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xml_sub_container.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);
        checkNormalizedNodeContext(returnValue);
        checkExpectValueNormalizeNodeContext(dataSchemaNode, returnValue, dataII);
    }

    @Test
    public void moduleSubContainerAugmentDataPostTest() throws Exception {
        final DataSchemaNode dataSchemaNode = schemaContext
                .getDataChildByName(QName.create(INSTANCE_IDENTIFIER_MODULE_QNAME, "cont"));
        final Module augmentModule = schemaContext.findModuleByNamespace(new URI("augment:module")).iterator().next();
        final QName contAugmentQName = QName.create(augmentModule.getQNameModule(), "cont-augment");
        final YangInstanceIdentifier.AugmentationIdentifier augII = new YangInstanceIdentifier.AugmentationIdentifier(
                Sets.newHashSet(contAugmentQName));
        final YangInstanceIdentifier dataII = YangInstanceIdentifier.of(dataSchemaNode.getQName()).node(augII)
                .node(contAugmentQName);
        final String uri = "instance-identifier-module:cont";
        mockBodyReader(uri, this.xmlBodyReader, true);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xml_augment_container.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);
        checkNormalizedNodeContext(returnValue);
        checkExpectValueNormalizeNodeContext(dataSchemaNode, returnValue, dataII);
    }

    @Test
    public void moduleSubContainerChoiceAugmentDataPostTest() throws Exception {
        final DataSchemaNode dataSchemaNode = schemaContext
                .getDataChildByName(QName.create(INSTANCE_IDENTIFIER_MODULE_QNAME, "cont"));
        final Module augmentModule = schemaContext.findModuleByNamespace(new URI("augment:module")).iterator().next();
        final QName augmentChoice1QName = QName.create(augmentModule.getQNameModule(), "augment-choice1");
        final QName augmentChoice2QName = QName.create(augmentChoice1QName, "augment-choice2");
        final QName containerQName = QName.create(augmentChoice1QName, "case-choice-case-container1");
        final YangInstanceIdentifier.AugmentationIdentifier augChoice1II = new YangInstanceIdentifier.AugmentationIdentifier(
                Sets.newHashSet(augmentChoice1QName));
        final YangInstanceIdentifier.AugmentationIdentifier augChoice2II = new YangInstanceIdentifier.AugmentationIdentifier(
                Sets.newHashSet(augmentChoice2QName));
        final YangInstanceIdentifier dataII = YangInstanceIdentifier.of(dataSchemaNode.getQName()).node(augChoice1II)
                .node(augmentChoice1QName).node(augChoice2II).node(augmentChoice2QName).node(containerQName);
        final String uri = "instance-identifier-module:cont";
        mockBodyReader(uri, this.xmlBodyReader, true);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xml_augment_choice_container.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);
        checkNormalizedNodeContext(returnValue);
        checkExpectValueNormalizeNodeContext(dataSchemaNode, returnValue, dataII);
    }

    private void checkExpectValueNormalizeNodeContext(final DataSchemaNode dataSchemaNode,
            final NormalizedNodeContext nnContext, final YangInstanceIdentifier dataNodeIdent) {
        assertEquals(dataSchemaNode, nnContext.getInstanceIdentifierContext().getSchemaNode());
        assertEquals(dataNodeIdent, nnContext.getInstanceIdentifierContext().getInstanceIdentifier());
        assertNotNull(NormalizedNodes.findNode(nnContext.getData(), dataNodeIdent));
    }

    /**
     * Test when container with the same name is placed in two modules
     * (foo-module and bar-module). Namespace must be used to distinguish
     * between them to find correct one. Check if container was found not only
     * according to its name but also by correct namespace used in payload.
     */
    @Test
    public void findFooContainerUsingNamespaceTest() throws Exception {
        mockBodyReader("", this.xmlBodyReader, true);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xmlDataFindFooContainer.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);

        // check return value
        checkNormalizedNodeContext(returnValue);
        // check if container was found both according to its name and namespace
        assertEquals("Not correct container found, name was ignored", "foo-bar-container",
                returnValue.getData().getNodeType().getLocalName());
        assertEquals("Not correct container found, namespace was ignored", "foo:module",
                returnValue.getData().getNodeType().getNamespace().toString());
    }

    /**
     * Test when container with the same name is placed in two modules
     * (foo-module and bar-module). Namespace must be used to distinguish
     * between them to find correct one. Check if container was found not only
     * according to its name but also by correct namespace used in payload.
     */
    @Test
    public void findBarContainerUsingNamespaceTest() throws Exception {
        mockBodyReader("", this.xmlBodyReader, true);
        final InputStream inputStream = Draft17XmlBodyReaderTest.class
                .getResourceAsStream("/instanceidentifier/xml/xmlDataFindBarContainer.xml");
        final NormalizedNodeContext returnValue = this.xmlBodyReader.readFrom(null, null, null, this.mediaType, null,
                inputStream);

        // check return value
        checkNormalizedNodeContext(returnValue);
        // check if container was found both according to its name and namespace
        assertEquals("Not correct container found, name was ignored", "foo-bar-container",
                returnValue.getData().getNodeType().getLocalName());
        assertEquals("Not correct container found, namespace was ignored", "bar:module",
                returnValue.getData().getNodeType().getNamespace().toString());
    }
}