/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package net.sourceforge.phpdt.internal.core.builder;

import java.util.ArrayList;

import net.sourceforge.phpdt.core.JavaCore;
import net.sourceforge.phpdt.internal.core.util.Util;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceProxy;
import org.eclipse.core.resources.IResourceProxyVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;

public class BatchImageBuilder extends AbstractImageBuilder {

	protected BatchImageBuilder(PHPBuilder javaBuilder) {
		super(javaBuilder);
		this.nameEnvironment.isIncrementalBuild = false;
	}

	public void build() {
		if (PHPBuilder.DEBUG)
			System.out.println("FULL build"); //$NON-NLS-1$

		try {
			notifier.subTask(Util.bind("build.cleaningOutput")); //$NON-NLS-1$
			PHPBuilder.removeProblemsAndTasksFor(javaBuilder.currentProject);
			// cleanOutputFolders(true);
			notifier.updateProgressDelta(0.1f);

			notifier.subTask(Util.bind("build.analyzingSources")); //$NON-NLS-1$
			ArrayList sourceFiles = new ArrayList(33);
			addAllSourceFiles(sourceFiles);
			notifier.updateProgressDelta(0.15f);

			if (sourceFiles.size() > 0) {
				SourceFile[] allSourceFiles = new SourceFile[sourceFiles.size()];
				sourceFiles.toArray(allSourceFiles);

				notifier
						.setProgressPerCompilationUnit(0.75f / allSourceFiles.length);
				workQueue.addAll(allSourceFiles);
				compile(allSourceFiles);
			}

			if (javaBuilder.javaProject.hasCycleMarker())
				javaBuilder.mustPropagateStructuralChanges();

		} catch (CoreException e) {
			throw internalException(e);
		} finally {
			cleanUp();
		}
	}

	protected void addAllSourceFiles(final ArrayList sourceFiles)
			throws CoreException {

		for (int i = 0, l = sourceLocations.length; i < l; i++) {
			final ClasspathMultiDirectory sourceLocation = sourceLocations[i];
			final char[][] exclusionPatterns = sourceLocation.exclusionPatterns;
			final boolean isAlsoProject = sourceLocation.sourceFolder
					.equals(javaBuilder.currentProject);
			sourceLocation.sourceFolder.accept(new IResourceProxyVisitor() {
				public boolean visit(IResourceProxy proxy) throws CoreException {
					IResource resource = null;
					if (exclusionPatterns != null) {
						resource = proxy.requestResource();
						if (Util.isExcluded(resource, exclusionPatterns))
							return false;
					}
					switch (proxy.getType()) {
					case IResource.FILE:
						if (net.sourceforge.phpdt.internal.compiler.util.Util
								.isJavaFileName(proxy.getName())) {
							if (resource == null)
								resource = proxy.requestResource();
							sourceFiles.add(new SourceFile((IFile) resource,
									sourceLocation, ((IFile) resource).getCharset()));
						}
						return false;
					case IResource.FOLDER:
						if (isAlsoProject
								&& isExcludedFromProject(proxy
										.requestFullPath()))
							return false;
					}
					return true;
				}
			}, IResource.NONE);
			notifier.checkCancel();
		}
	}

	protected void cleanOutputFolders() throws CoreException {
		boolean deleteAll = JavaCore.CLEAN.equals(javaBuilder.javaProject
				.getOption(JavaCore.CORE_JAVA_BUILD_CLEAN_OUTPUT_FOLDER, true));
		if (deleteAll) {
			ArrayList visited = new ArrayList(sourceLocations.length);
			for (int i = 0, l = sourceLocations.length; i < l; i++) {
				notifier.subTask(Util.bind("build.cleaningOutput")); //$NON-NLS-1$
				ClasspathMultiDirectory sourceLocation = sourceLocations[i];
				if (sourceLocation.hasIndependentOutputFolder) {
					IContainer outputFolder = sourceLocation.binaryFolder;
					if (!visited.contains(outputFolder)) {
						visited.add(outputFolder);
						IResource[] members = outputFolder.members();
						for (int j = 0, m = members.length; j < m; j++)
							members[j].delete(IResource.FORCE, null);
					}
					notifier.checkCancel();
					copyExtraResourcesBack(sourceLocation, deleteAll);
				} else {
					boolean isOutputFolder = sourceLocation.sourceFolder
							.equals(sourceLocation.binaryFolder);
					final char[][] exclusionPatterns = isOutputFolder ? sourceLocation.exclusionPatterns
							: null; // ignore exclusionPatterns if output folder
									// == another source folder... not this one
					sourceLocation.binaryFolder.accept(
							new IResourceProxyVisitor() {
								public boolean visit(IResourceProxy proxy)
										throws CoreException {
									IResource resource = null;
									if (exclusionPatterns != null) {
										resource = proxy.requestResource();
										if (Util.isExcluded(resource,
												exclusionPatterns))
											return false;
									}
									if (proxy.getType() == IResource.FILE) {
										// if
										// (ProjectPrefUtil.isClassFileName(proxy.getName()))
										// {
										// if (resource == null)
										// resource = proxy.requestResource();
										// resource.delete(IResource.FORCE,
										// null);
										// }
										return false;
									}
									notifier.checkCancel();
									return true;
								}
							}, IResource.NONE);
					if (!isOutputFolder) {
						notifier.checkCancel();
						copyPackages(sourceLocation);
					}
				}
				notifier.checkCancel();
			}
		} else {
			for (int i = 0, l = sourceLocations.length; i < l; i++) {
				ClasspathMultiDirectory sourceLocation = sourceLocations[i];
				if (sourceLocation.hasIndependentOutputFolder)
					copyExtraResourcesBack(sourceLocation, deleteAll);
				else if (!sourceLocation.sourceFolder
						.equals(sourceLocation.binaryFolder))
					copyPackages(sourceLocation); // output folder is
													// different from source
													// folder
				notifier.checkCancel();
			}
		}
	}

	protected void copyExtraResourcesBack(
			ClasspathMultiDirectory sourceLocation, final boolean deletedAll)
			throws CoreException {
		// When, if ever, does a builder need to copy resources files (not .java
		// or .class) into the output folder?
		// If we wipe the output folder at the beginning of the build then all
		// 'extra' resources must be copied to the output folder.

		notifier.subTask(Util.bind("build.copyingResources")); //$NON-NLS-1$
		final int segmentCount = sourceLocation.sourceFolder.getFullPath()
				.segmentCount();
		final char[][] exclusionPatterns = sourceLocation.exclusionPatterns;
		final IContainer outputFolder = sourceLocation.binaryFolder;
		final boolean isAlsoProject = sourceLocation.sourceFolder
				.equals(javaBuilder.currentProject);
		sourceLocation.sourceFolder.accept(new IResourceProxyVisitor() {
			public boolean visit(IResourceProxy proxy) throws CoreException {
				IResource resource = null;
				switch (proxy.getType()) {
				case IResource.FILE:
					if (net.sourceforge.phpdt.internal.compiler.util.Util
							.isJavaFileName(proxy.getName()))
						return false;// ||
										// ProjectPrefUtil.isClassFileName(proxy.getName()))
										// return false;

					resource = proxy.requestResource();
					if (javaBuilder.filterExtraResource(resource))
						return false;
					if (exclusionPatterns != null
							&& Util.isExcluded(resource, exclusionPatterns))
						return false;

					IPath partialPath = resource.getFullPath()
							.removeFirstSegments(segmentCount);
					IResource copiedResource = outputFolder
							.getFile(partialPath);
					if (copiedResource.exists()) {
						if (deletedAll) {
							createErrorFor(resource, Util
									.bind("build.duplicateResource")); //$NON-NLS-1$
							return false;
						}
						copiedResource.delete(IResource.FORCE, null); // last
																		// one
																		// wins
					}
					resource.copy(copiedResource.getFullPath(),
							IResource.FORCE, null);
					copiedResource.setDerived(true);
					return false;
				case IResource.FOLDER:
					resource = proxy.requestResource();
					if (javaBuilder.filterExtraResource(resource))
						return false;
					if (exclusionPatterns != null
							&& Util.isExcluded(resource, exclusionPatterns))
						return false;

					IPath folderPath = resource.getFullPath();
					if (isAlsoProject && isExcludedFromProject(folderPath))
						return false; // the sourceFolder == project
						// createFolder(folderPath.removeFirstSegments(segmentCount),
						// outputFolder);
				}
				return true;
			}
		}, IResource.NONE);
	}

	protected void copyPackages(ClasspathMultiDirectory sourceLocation)
			throws CoreException {
//		final int segmentCount = sourceLocation.sourceFolder.getFullPath()
//				.segmentCount();
		final char[][] exclusionPatterns = sourceLocation.exclusionPatterns;
		//final IContainer outputFolder = sourceLocation.binaryFolder;
		final boolean isAlsoProject = sourceLocation.sourceFolder
				.equals(javaBuilder.currentProject);
		sourceLocation.sourceFolder.accept(new IResourceProxyVisitor() {
			public boolean visit(IResourceProxy proxy) throws CoreException {
				switch (proxy.getType()) {
				case IResource.FILE:
					return false;
				case IResource.FOLDER:
					IResource resource = proxy.requestResource();
					if (javaBuilder.filterExtraResource(resource))
						return false;
					if (exclusionPatterns != null
							&& Util.isExcluded(resource, exclusionPatterns))
						return false;

					IPath folderPath = resource.getFullPath();
					if (isAlsoProject && isExcludedFromProject(folderPath))
						return false; // the sourceFolder == project
						// createFolder(folderPath.removeFirstSegments(segmentCount),
						// outputFolder);
				}
				return true;
			}
		}, IResource.NONE);
	}

	public String toString() {
		return "batch image builder for:\n\tnew state: " + newState; //$NON-NLS-1$
	}
}