/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2017 wcm.io
    * %%
    * 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.
   * #L%
   */
  package io.wcm.tooling.commons.packmgr.install;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.Collection;
  
  import org.apache.http.client.protocol.HttpClientContext;
  import org.apache.http.impl.client.CloseableHttpClient;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import io.wcm.tooling.commons.packmgr.PackageManagerException;
  import io.wcm.tooling.commons.packmgr.PackageManagerHelper;
  import io.wcm.tooling.commons.packmgr.PackageManagerProperties;
  
  /**
   * Installs a list of AEM content packages via Package Manager.
   */
  public final class PackageInstaller {
  
    private final PackageManagerProperties props;
    private final PackageManagerHelper pkgmgr;
  
    private boolean replicate;
  
    private static final Logger log = LoggerFactory.getLogger(PackageInstaller.class);
  
    /**
     * @param props Package manager configuration properties.
     */
    public PackageInstaller(PackageManagerProperties props) {
      this.props = props;
      this.pkgmgr = new PackageManagerHelper(props);
    }
  
    /**
     * @param replicate Whether to replicate the package after upload.
     */
    public void setReplicate(boolean replicate) {
      this.replicate = replicate;
    }
  
    /**
     * Deploy files via package manager.
     * @param packageFiles AEM content packages
     */
    public void installFiles(Collection<PackageFile> packageFiles) {
      try (CloseableHttpClient httpClient = pkgmgr.getHttpClient()) {
        HttpClientContext packageManagerHttpClientContext = pkgmgr.getPackageManagerHttpClientContext();
        HttpClientContext consoleHttpClientContext = pkgmgr.getConsoleHttpClientContext();
  
        for (PackageFile packageFile : packageFiles) {
          installFile(packageFile, httpClient, packageManagerHttpClientContext, consoleHttpClientContext);
        }
      }
      catch (IOException ex) {
        throw new PackageManagerException("Install operation failed.", ex);
      }
    }
  
    /**
     * Deploy file via package manager.
     * @param packageFile AEM content package
     */
    public void installFile(PackageFile packageFile) {
      try (CloseableHttpClient httpClient = pkgmgr.getHttpClient()) {
        HttpClientContext packageManagerHttpClientContext = pkgmgr.getPackageManagerHttpClientContext();
        HttpClientContext consoleHttpClientContext = pkgmgr.getConsoleHttpClientContext();
  
        installFile(packageFile, httpClient, packageManagerHttpClientContext, consoleHttpClientContext);
      }
      catch (IOException ex) {
        throw new PackageManagerException("Install operation failed.", ex);
      }
    }
  
    private void installFile(PackageFile packageFile, CloseableHttpClient httpClient,
        HttpClientContext packageManagerHttpClientContext, HttpClientContext consoleHttpClientContext) throws IOException {
      File file = packageFile.getFile();
      if (!file.exists()) {
       throw new PackageManagerException("File does not exist: " + file.getAbsolutePath());
     }
 
     // before install: if bundles are still stopping/starting, wait for completion
     pkgmgr.waitForBundlesActivation(httpClient, consoleHttpClientContext);
     // before install: if packages are still installing, wait for completion
     pkgmgr.waitForPackageManagerInstallStatusFinished(httpClient, packageManagerHttpClientContext);
 
     if (packageFile.isInstall()) {
       log.info("Upload and install {}{} to {}", packageFile.isForce() ? "(force) " : "", file.getName(), props.getPackageManagerUrl());
     }
     else {
       log.info("Upload {} to {}", file.getName(), props.getPackageManagerUrl());
     }
 
     VendorPackageInstaller installer = VendorInstallerFactory.getPackageInstaller(props.getPackageManagerUrl());
     if (installer != null) {
       installer.installPackage(packageFile, replicate,
           pkgmgr, httpClient, packageManagerHttpClientContext, consoleHttpClientContext, props);
     }
   }
 
 }