/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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.argeo.slc.execution;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import org.argeo.slc.SlcException;
  import org.argeo.slc.deploy.ModuleDescriptor;
  
  /** Describes the information required to launch a flow */
  public class ExecutionModuleDescriptor extends ModuleDescriptor {
  	/** Metadata header identifying an SLC execution module */
  	public final static String SLC_EXECUTION_MODULE = "SLC-ExecutionModule";
  
  	private static final long serialVersionUID = -2394473464513029512L;
  	private List<ExecutionSpec> executionSpecs = new ArrayList<ExecutionSpec>();
  	private List<ExecutionFlowDescriptor> executionFlows = new ArrayList<ExecutionFlowDescriptor>();
  
  	public List<ExecutionSpec> getExecutionSpecs() {
  		return executionSpecs;
  	}
  
  	public List<ExecutionFlowDescriptor> getExecutionFlows() {
  		return executionFlows;
  	}
  
  	/**
  	 * Returns a new {@link ExecutionModuleDescriptor} that can be used to build
  	 * a {@link RealizedFlow}.
  	 */
  	public ExecutionFlowDescriptor cloneFlowDescriptor(String name) {
  		ExecutionFlowDescriptor res = null;
  		for (ExecutionFlowDescriptor efd : executionFlows) {
  			if (efd.getName().equals(name)
  					|| ("/" + efd.getName()).equals(name)) {
  				try {
  					res = (ExecutionFlowDescriptor) efd.clone();
  				} catch (CloneNotSupportedException e) {
  					throw new SlcException("Cannot clone " + efd, e);
  				}
  			}
  		}
  		if (res == null)
  			throw new SlcException("Flow " + name + " not found.");
  		return res;
  	}
  
  	public RealizedFlow asRealizedFlow(String flow, Map<String, Object> values) {
  		RealizedFlow realizedFlow = new RealizedFlow();
  		realizedFlow.setFlowDescriptor(cloneFlowDescriptor(flow));
  		realizedFlow.setModuleName(getName());
  		realizedFlow.setModuleVersion(getVersion());
  		realizedFlow.getFlowDescriptor().getValues().putAll(values);
  		return realizedFlow;
  	}
  
  	public void setExecutionSpecs(List<ExecutionSpec> executionSpecs) {
  		this.executionSpecs = executionSpecs;
  	}
  
  	public void setExecutionFlows(List<ExecutionFlowDescriptor> executionFlows) {
  		this.executionFlows = executionFlows;
  	}
  }