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package org.netbeans.modules.websvc.jaxwsmodel.project;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

import org.netbeans.api.java.project.JavaProjectConstants;
import org.netbeans.api.project.Project;
import org.netbeans.api.project.ProjectManager;
import org.netbeans.api.project.ProjectUtils;
import org.netbeans.api.project.SourceGroup;
import org.netbeans.api.project.ant.AntBuildExtender;
import org.netbeans.modules.websvc.api.jaxws.project.JaxWsBuildScriptExtensionProvider;
import org.netbeans.modules.websvc.api.jaxws.project.WSUtils;
import org.netbeans.spi.project.ProjectServiceProvider;
import org.netbeans.spi.project.support.ant.AntProjectHelper;
import org.netbeans.spi.project.ui.ProjectOpenedHook;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;

/**
 *
 * @author mkuchtiak
 */
@ProjectServiceProvider(service=ProjectOpenedHook.class, projectType="org-netbeans-modules-java-j2seproject")
public class J2seJaxWsOpenHook extends ProjectOpenedHook {
    Project prj;

    /** Creates a new instance of J2seJaxWsOpenHook */
    public J2seJaxWsOpenHook(Project prj) {
        this.prj = prj;
        try {
            Class.forName(WSUtils.class.getName());
        }
        catch (ClassNotFoundException e) {
            assert false;
        }
    }
    
    @Override
    protected void projectOpened() {
        AntBuildExtender ext = prj.getLookup().lookup(AntBuildExtender.class);
        final JaxWsBuildScriptExtensionProvider extProvider = prj.getLookup().lookup(JaxWsBuildScriptExtensionProvider.class);
        if (ext != null && extProvider != null) {
            FileObject jaxws_build = prj.getProjectDirectory().getFileObject(TransformerUtils.JAXWS_BUILD_XML_PATH);
            try {
                AntBuildExtender.Extension extension = ext.getExtension(JaxWsBuildScriptExtensionProvider.JAXWS_EXTENSION);
                FileObject jaxWsFo = WSUtils.findJaxWsFileObject(prj);
                if (jaxws_build==null || extension == null) {
                    if (jaxWsFo != null && WSUtils.hasClients(jaxWsFo)) {
                        // generate nbproject/jaxws-build.xml
                        // add jaxws extension
                        extProvider.addJaxWsExtension(ext);
                        addJaxWsApiEndorsed(prj);
                    }
                } else if (jaxWsFo == null || !WSUtils.hasClients(jaxWsFo)) {
                    // remove nbproject/jaxws-build.xml
                    // remove the jaxws extension
                    extProvider.removeJaxWsExtension(ext);
                } else {
                    // remove compile dependencies, and re-generate build-script if needed
                    FileObject project_xml = prj.getProjectDirectory().getFileObject(AntProjectHelper.PROJECT_XML_PATH);
                    if (project_xml != null) {
                        removeCompileDependencies(prj, project_xml, ext);
                    }
                    addJaxWsApiEndorsed(prj);
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }

    @Override
    protected void projectClosed() {
    }
    
    /** make old project backward compatible with new projects
     *
     */
    private void removeCompileDependencies (
                        Project prj,
                        FileObject project_xml,
                        final AntBuildExtender ext) throws IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader( 
                new FileInputStream(FileUtil.toFile(project_xml)),
                    Charset.forName("UTF-8")));                         // NOI18N
        String line = null;
        boolean isOldVersion = false;
        while ((line = br.readLine()) != null) {
            if (line.contains("wsimport-client-compile")) { //NOI18N
                isOldVersion = true;
                break;
            }
        }
        br.close();
        if (isOldVersion) {
            TransformerUtils.transformClients(prj.getProjectDirectory(), J2seBuildScriptExtensionProvider.JAX_WS_STYLESHEET_RESOURCE);
            AntBuildExtender.Extension extension = ext.getExtension(JaxWsBuildScriptExtensionProvider.JAXWS_EXTENSION);
            if (extension!=null) {
                extension.removeDependency("-do-compile", "wsimport-client-compile"); //NOI18N
                extension.removeDependency("-do-compile-single", "wsimport-client-compile"); //NOI18N
                ProjectManager.getDefault().saveProject(prj);
            }
        }

    }

    private void addJaxWsApiEndorsed(Project prj) throws IOException {
        SourceGroup[] sourceGroups = ProjectUtils.getSources(prj).getSourceGroups(
        JavaProjectConstants.SOURCES_TYPE_JAVA);
        if (sourceGroups!=null && sourceGroups.length>0) {
            WSUtils.addJaxWsApiEndorsed(prj, sourceGroups[0].getRootFolder());
        }
    }
}
