package org.argeo.slc.ant;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.helper.ProjectHelperImpl;

import org.argeo.slc.core.structure.DefaultSRegistry;
import org.argeo.slc.core.structure.tree.TreeSElement;
import org.argeo.slc.core.structure.tree.TreeSPath;

/**
 * Custom implementation of a <code>ProjectHelper</code> binding a Spring
 * application context and a structure registry with the Ant project.
 */
public class SlcProjectHelper extends ProjectHelperImpl {
	public static String PROP_APPLICATION_CONTEXT = "org.argeo.slc.slcRootContext";
	// public static String PROP_REGISTRY_MODE =
	// "org.argeo.slc.slcRegistryMode";
	public static String REF_ROOT_CONTEXT = "slcApplicationContext";
	public static String REF_STRUCTURE_REGISTRY = "slcStructureRegistry";

	@Override
	public void parse(Project project, Object source) throws BuildException {
		stdOut("Entered SLC project helper");

		// init Spring application context
		String acPath = System.getProperty(PROP_APPLICATION_CONTEXT,
				"applicationContext.xml");
		ApplicationContext context = new FileSystemXmlApplicationContext(acPath);
		project.addReference(REF_ROOT_CONTEXT, context);

		// init structure register if it does not exist
		DefaultSRegistry registry = new DefaultSRegistry();
		project.addReference(REF_STRUCTURE_REGISTRY, registry);

		// call the underlying implementation to do the actual work
		super.parse(project, source);

		String projectDescription = project.getDescription() != null ? project
				.getDescription() : "Root";
		TreeSElement element = TreeSElement.createRootElelment(
				getProjectPathName(project), projectDescription);
		registry.register(element);
	}

	private static void stdOut(Object o) {
		System.out.println(o);
	}

	/** Get the path of a project (root).*/
	public static TreeSPath getProjectPath(Project project) {
		return TreeSPath.createChild(null, getProjectPathName(project));
	}

	private static String getProjectPathName(Project project) {
		String projectName = project.getName() != null ? project.getName()
				: "project";
		return projectName;
	}
}