/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */

package org.mule.runtime.module.deployment.impl.internal.plugin;

import static java.lang.String.format;
import static org.mule.runtime.api.util.Preconditions.checkArgument;
import static org.mule.runtime.core.api.config.bootstrap.ArtifactType.PLUGIN;
import static org.mule.runtime.core.internal.util.JarUtils.loadFileContentFrom;
import static org.mule.runtime.deployment.model.api.plugin.ArtifactPluginDescriptor.MULE_ARTIFACT_PATH_INSIDE_JAR;
import static org.mule.runtime.module.artifact.api.descriptor.ArtifactDescriptor.MULE_ARTIFACT_JSON_DESCRIPTOR;
import org.mule.runtime.api.deployment.meta.MulePluginModel;
import org.mule.runtime.api.deployment.persistence.AbstractMuleArtifactModelJsonSerializer;
import org.mule.runtime.api.deployment.persistence.MulePluginModelJsonSerializer;
import org.mule.runtime.core.api.config.bootstrap.ArtifactType;
import org.mule.runtime.core.api.registry.SpiServiceRegistry;
import org.mule.runtime.deployment.model.api.plugin.ArtifactPluginDescriptor;
import org.mule.runtime.deployment.model.api.plugin.LoaderDescriber;
import org.mule.runtime.module.artifact.api.descriptor.ArtifactDescriptorCreateException;
import org.mule.runtime.module.artifact.api.descriptor.ClassLoaderModelLoader;
import org.mule.runtime.module.artifact.api.descriptor.DescriptorLoaderRepository;
import org.mule.runtime.module.artifact.api.descriptor.AbstractArtifactDescriptorFactory;
import org.mule.runtime.module.deployment.impl.internal.artifact.ServiceRegistryDescriptorLoaderRepository;

import java.io.File;
import java.io.IOException;
import java.util.Optional;

/**
 * Creates {@link ArtifactPluginDescriptor} instances
 */
public class ArtifactPluginDescriptorFactory
    extends AbstractArtifactDescriptorFactory<MulePluginModel, ArtifactPluginDescriptor> {

  /**
   * Creates a default factory
   */
  public ArtifactPluginDescriptorFactory() {
    this(new ServiceRegistryDescriptorLoaderRepository(new SpiServiceRegistry()));
  }

  /**
   * Creates a custom factory
   * 
   * @param descriptorLoaderRepository contains all the {@link ClassLoaderModelLoader} registered on the container. Non null
   */
  public ArtifactPluginDescriptorFactory(DescriptorLoaderRepository descriptorLoaderRepository) {
    super(descriptorLoaderRepository);
  }

  @Override
  public ArtifactPluginDescriptor create(File pluginJarFile) throws ArtifactDescriptorCreateException {
    try {
      checkArgument(pluginJarFile.isDirectory() || pluginJarFile.getName().endsWith(".jar"),
                    "provided file is not a plugin: " + pluginJarFile.getAbsolutePath());
      // Use / instead of File.separator as the file is going to be accessed inside the jar as a URL
      String mulePluginJsonPathInsideJarFile = MULE_ARTIFACT_PATH_INSIDE_JAR + "/" + MULE_ARTIFACT_JSON_DESCRIPTOR;
      Optional<byte[]> jsonDescriptorContentOptional = loadFileContentFrom(pluginJarFile, mulePluginJsonPathInsideJarFile);
      return jsonDescriptorContentOptional
          .map(jsonDescriptorContent -> loadFromJsonDescriptor(pluginJarFile,
                                                               loadModelFromJson(new String(jsonDescriptorContent))))
          .orElseThrow(() -> new ArtifactDescriptorCreateException(pluginDescriptorNotFound(pluginJarFile,
                                                                                            mulePluginJsonPathInsideJarFile)));
    } catch (ArtifactDescriptorCreateException e) {
      throw e;
    } catch (IOException e) {
      throw new ArtifactDescriptorCreateException(e);
    }
  }

  @Override
  protected ArtifactType getArtifactType() {
    return PLUGIN;
  }

  @Override
  protected void doDescriptorConfig(MulePluginModel artifactModel, ArtifactPluginDescriptor descriptor, File artifactLocation) {
    artifactModel.getExtensionModelLoaderDescriptor().ifPresent(extensionModelDescriptor -> {
      final LoaderDescriber loaderDescriber = new LoaderDescriber(extensionModelDescriptor.getId());
      loaderDescriber.addAttributes(extensionModelDescriptor.getAttributes());
      descriptor.setExtensionModelDescriptorProperty(loaderDescriber);
    });
  }

  @Override
  protected ArtifactPluginDescriptor createArtifactDescriptor(File artifactLocation, String name) {
    return new ArtifactPluginDescriptor(name);
  }

  private static String pluginDescriptorNotFound(File pluginFile, String mulePluginJsonPathInsideJarFile) {
    return format("The plugin descriptor '%s' on plugin file '%s' is not present", mulePluginJsonPathInsideJarFile, pluginFile);
  }

  @Override
  protected AbstractMuleArtifactModelJsonSerializer<MulePluginModel> getMuleArtifactModelJsonSerializer() {
    return new MulePluginModelJsonSerializer();
  }
}
