/**
 * Copyright 2017 ZTE Corporation.
 *
 * 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.
 */
package org.activiti.rest.conf.init;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.List;

import javax.annotation.PostConstruct;

import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

@Configuration
public class InitBaseProcessDefinition {

  protected static final Logger LOGGER = LoggerFactory.getLogger(InitBaseProcessDefinition.class);

  @Autowired
  protected RepositoryService repositoryService;

  @Autowired
  protected Environment environment;

  @PostConstruct
  public void init() {

    if (Boolean.valueOf(this.environment.getProperty("init.process.definitions", "true"))
        .booleanValue()) {
      LOGGER.info("Initializing base process definitions");
      initBaseProcessDefinitions();
    }
  }

  protected void initBaseProcessDefinitions() {
    String deploymentName = "base definitions";
    List deploymentList =
        this.repositoryService.createDeploymentQuery().deploymentName(deploymentName).list();

    if ((deploymentList == null) || (deploymentList.isEmpty())) {

      String classPath = this.getClass().getClassLoader().getResource("/").getPath();
      classPath = classPath.replaceAll("WEB-INF/classes", "baseProccessDefinition");

      File files = new File(classPath);
      DeploymentBuilder builder = this.repositoryService.createDeployment().name(deploymentName);
      File flist[] = files.listFiles();
      if (flist != null && flist.length != 0) {
        for (File f : flist) {

          String fileName = f.getName();
          if (fileName != null && fileName.endsWith("bpmn20.xml")) {
            try {
              builder.addInputStream(fileName, new FileInputStream(f));
              LOGGER.info("deploy success: {}", fileName);
            } catch (FileNotFoundException e) {
              LOGGER.info("deploy failed: {}", fileName);
            }
          }
        }
        builder.deploy();
      }
    }
  }
}