package org.argeo.osgi.a2;
   
   import java.util.Collections;
   import java.util.SortedMap;
   import java.util.TreeMap;
   
   import org.osgi.framework.Version;
   
   /**
   * The logical name of a software package. In OSGi's case this is
   * <code>Bundle-SymbolicName</code>. This is the equivalent of Maven's artifact
   * id.
   */
  public class A2Component implements Comparable<A2Component> {
  	private final A2Contribution contribution;
  	private final String id;
  
  	final SortedMap<String, A2Branch> branches = Collections.synchronizedSortedMap(new TreeMap<>());
  
  	public A2Component(A2Contribution contribution, String id) {
  		this.contribution = contribution;
  		this.id = id;
  		contribution.components.put(id, this);
  	}
  
  	A2Branch getOrAddBranch(String branchId) {
  		if (branches.containsKey(branchId))
  			return branches.get(branchId);
  		else
  			return new A2Branch(this, branchId);
  	}
  
  	A2Module getOrAddModule(Version version, Object locator) {
  		A2Branch branch = getOrAddBranch(A2Branch.versionToBranchId(version));
  		A2Module module = branch.getOrAddModule(version, locator);
  		return module;
  	}
  
  	A2Branch last() {
  		return branches.get(branches.lastKey());
  	}
  
  	A2Contribution getContribution() {
  		return contribution;
  	}
  
  	String getId() {
  		return id;
  	}
  
  	@Override
  	public int compareTo(A2Component o) {
  		return id.compareTo(o.id);
  	}
  
  	@Override
  	public int hashCode() {
  		return id.hashCode();
  	}
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj instanceof A2Component) {
  			A2Component o = (A2Component) obj;
  			return contribution.equals(o.contribution) && id.equals(o.id);
  		} else
  			return false;
  	}
  
  	@Override
  	public String toString() {
  		return contribution.getId() + ":" + id;
  	}
  
  	void asTree(String prefix, StringBuffer buf) {
  		if (prefix == null)
  			prefix = "";
  		A2Branch lastBranch = last();
  		SortedMap<String, A2Branch> displayMap = new TreeMap<>(Collections.reverseOrder());
  		displayMap.putAll(branches);
  		for (String branchId : displayMap.keySet()) {
  			A2Branch branch = displayMap.get(branchId);
  			if (!lastBranch.equals(branch)) {
  				buf.append('\n');
  				buf.append(prefix);
  			} else {
  				buf.append(" -");
  			}
  			buf.append(prefix);
  			buf.append(branchId);
  			A2Module first = branch.first();
  			A2Module last = branch.last();
  			buf.append(" (").append(last.getVersion());
  			if (!first.equals(last))
  				buf.append(" ... ").append(first.getVersion());
  			buf.append(')');
  		}
  	}
  
 }