package org.argeo.osgi.a2;
   
   import java.util.Collections;
   import java.util.Map;
   import java.util.TreeMap;
   
   /**
    * A category grouping a set of {@link A2Component}, typically based on the
    * provider of these components. This is the equivalent of Maven's group Id.
   */
  public class A2Contribution implements Comparable<A2Contribution> {
  	final static String BOOT = "boot";
  	final static String RUNTIME = "runtime";
  	final static String CLASSPATH = "classpath";
  
  	private final ProvisioningSource source;
  	private final String id;
  
  	final Map<String, A2Component> components = Collections.synchronizedSortedMap(new TreeMap<>());
  
  	/**
  	 * The contribution must be added to the source. Rather use
  	 * {@link AbstractProvisioningSource#getOrAddContribution(String)} than this
  	 * contructor directly.
  	 */
  	public A2Contribution(ProvisioningSource context, String id) {
  		this.source = context;
  		this.id = id;
  //		if (context != null)
  //			context.contributions.put(id, this);
  	}
  
  	A2Component getOrAddComponent(String componentId) {
  		if (components.containsKey(componentId))
  			return components.get(componentId);
  		else
  			return new A2Component(this, componentId);
  	}
  
  	public ProvisioningSource getSource() {
  		return source;
  	}
  
  	public String getId() {
  		return id;
  	}
  
  	@Override
  	public int compareTo(A2Contribution o) {
  		return id.compareTo(o.id);
  	}
  
  	@Override
  	public int hashCode() {
  		return id.hashCode();
  	}
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj instanceof A2Contribution) {
  			A2Contribution o = (A2Contribution) obj;
  			return id.equals(o.id);
  		} else
  			return false;
  	}
  
  	@Override
  	public String toString() {
  		return id;
  	}
  
  	void asTree(String prefix, StringBuffer buf) {
  		if (prefix == null)
  			prefix = "";
  		for (String componentId : components.keySet()) {
  			buf.append(prefix);
  			buf.append(componentId);
  			A2Component component = components.get(componentId);
  			component.asTree(prefix, buf);
  			buf.append('\n');
  		}
  	}
  
  }