/*********************************************************************
 * Copyright (c) 2009, 2012 SpringSource, a division of VMware, Inc.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
**********************************************************************/

package org.eclipse.virgo.ide.bundlor.internal.core;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.Properties;

import org.eclipse.virgo.bundlor.EntryScannerListener;
import org.eclipse.virgo.bundlor.ManifestGenerator;
import org.eclipse.virgo.bundlor.support.ArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.ManifestGeneratorContributors;
import org.eclipse.virgo.bundlor.support.ManifestModifier;
import org.eclipse.virgo.bundlor.support.ManifestTemplateModifier;
import org.eclipse.virgo.bundlor.support.StandardManifestGenerator;
import org.eclipse.virgo.bundlor.support.contributors.BundleClassPathArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.ExcludedImportAndExportPartialManifestModifier;
import org.eclipse.virgo.bundlor.support.contributors.IgnoredExistingHeadersManifestModifier;
import org.eclipse.virgo.bundlor.support.contributors.JspArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.ManifestTemplateDirectiveMigrator;
import org.eclipse.virgo.bundlor.support.contributors.OsgiProfileManifestTemplateModifier;
import org.eclipse.virgo.bundlor.support.contributors.StaticResourceArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.ToolStampManifestModifier;
import org.eclipse.virgo.bundlor.support.contributors.xml.BlueprintArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.xml.HibernateMappingArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.xml.JpaPersistenceArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.xml.Log4JXmlArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.xml.SpringApplicationContextArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.contributors.xml.WebApplicationArtifactAnalyzer;
import org.eclipse.virgo.bundlor.support.partialmanifest.ReadablePartialManifest;
import org.eclipse.virgo.bundlor.support.partialmanifest.StandardPartialManifestResolver;
import org.eclipse.virgo.bundlor.support.partialmanifest.StandardReadablePartialManifest;
import org.eclipse.virgo.bundlor.support.properties.PropertiesSource;
import org.eclipse.virgo.bundlor.support.propertysubstitution.PlaceholderManifestAndTemplateModifier;
import org.eclipse.virgo.util.parser.manifest.ManifestContents;

/**
 * Factory to create {@link ManifestGenerator}.
 *
 * @author Christian Dupuis
 * @since 2.3.0
 */
class ManifestGeneratorFactory {

    public static ManifestGenerator create(ReadablePartialManifest partialManifest, ArtifactAnalyzer artifactAnalyzer,
        PropertiesSource... properties) {
        ManifestGeneratorContributors contributors = create(artifactAnalyzer, properties);

        // Remove custom headers
        contributors.addManifestModifier(new HeaderRemovingManifestModifier());
        contributors.addManifestTemplateModifier(new HeaderRemovingTemplateManifestModifier());

        // Add partial manifest model
        contributors.setReadablePartialManifest(partialManifest);

        if (partialManifest instanceof EntryScannerListener) {
            contributors.addEntryScannerListener((EntryScannerListener) partialManifest);
        }

        return new StandardManifestGenerator(contributors);
    }

    private static ManifestGeneratorContributors create(ArtifactAnalyzer artifactAnalyzer, PropertiesSource... propertiesSources) {
        ManifestGeneratorContributors contributors = new ManifestGeneratorContributors();

        Properties properties = combineProperties(propertiesSources);

        BlueprintArtifactAnalyzer blueprintArtifactAnalyzer = new BlueprintArtifactAnalyzer();
        IgnoredExistingHeadersManifestModifier ignoredExistingHeadersManifestModifier = new IgnoredExistingHeadersManifestModifier();
        ExcludedImportAndExportPartialManifestModifier excludedImportAndExportPartialManifestModifier = new ExcludedImportAndExportPartialManifestModifier();
        PlaceholderManifestAndTemplateModifier placeholderManifestAndTemplateModifier = new PlaceholderManifestAndTemplateModifier(properties);
        ManifestTemplateDirectiveMigrator manifestTemplateDirectiveMigrator = new ManifestTemplateDirectiveMigrator();
        StandardPartialManifestResolver partialManifestResolver = new StandardPartialManifestResolver();

        List<ArtifactAnalyzer> analyzers = new ArrayList<ArtifactAnalyzer>();
        BundleClassPathArtifactAnalyzer bundleClassPathArtifactAnalyzer = new BundleClassPathArtifactAnalyzer(analyzers);

        contributors //
        .addArtifactAnalyzer(artifactAnalyzer)
        // .addArtifactAnalyzer(new AsmTypeArtefactAnalyser()) //
        .addArtifactAnalyzer(new StaticResourceArtifactAnalyzer()) //
        .addArtifactAnalyzer(new HibernateMappingArtifactAnalyzer()) //
        .addArtifactAnalyzer(new JpaPersistenceArtifactAnalyzer()) //
        .addArtifactAnalyzer(new Log4JXmlArtifactAnalyzer()) //
        .addArtifactAnalyzer(new SpringApplicationContextArtifactAnalyzer()) //
        .addArtifactAnalyzer(blueprintArtifactAnalyzer) //
        .addArtifactAnalyzer(new WebApplicationArtifactAnalyzer()) //
        .addArtifactAnalyzer(bundleClassPathArtifactAnalyzer) //
        .addArtifactAnalyzer(new JspArtifactAnalyzer());

        analyzers.add(artifactAnalyzer);
        analyzers.add(new StaticResourceArtifactAnalyzer());
        analyzers.add(new HibernateMappingArtifactAnalyzer());
        analyzers.add(new JpaPersistenceArtifactAnalyzer());
        analyzers.add(new Log4JXmlArtifactAnalyzer());
        analyzers.add(new SpringApplicationContextArtifactAnalyzer());
        analyzers.add(blueprintArtifactAnalyzer);
        analyzers.add(new WebApplicationArtifactAnalyzer());
        analyzers.add(bundleClassPathArtifactAnalyzer);
        analyzers.add(new JspArtifactAnalyzer());

        contributors //
        .addManifestReader(excludedImportAndExportPartialManifestModifier) //
        .addManifestReader(ignoredExistingHeadersManifestModifier) //
        .addManifestReader(blueprintArtifactAnalyzer);

        contributors //
        .addManifestModifier(placeholderManifestAndTemplateModifier) //
        .addManifestModifier(ignoredExistingHeadersManifestModifier) //
        .addManifestModifier(new ToolStampManifestModifier());

        contributors //
        .addManifestTemplateModifier(manifestTemplateDirectiveMigrator) //
        .addManifestTemplateModifier(placeholderManifestAndTemplateModifier) //
        .addManifestTemplateModifier(new OsgiProfileManifestTemplateModifier(properties));

        contributors //
        .addManifestContributor(bundleClassPathArtifactAnalyzer);

        contributors //
        .addPartialManifestModifier(manifestTemplateDirectiveMigrator) //
        .addPartialManifestModifier(excludedImportAndExportPartialManifestModifier);

        contributors //
        .addTemplateHeaderReader(excludedImportAndExportPartialManifestModifier) //
        .addTemplateHeaderReader(ignoredExistingHeadersManifestModifier) //
        .addTemplateHeaderReader(placeholderManifestAndTemplateModifier) //
        .addTemplateHeaderReader(partialManifestResolver);

        contributors //
        .setReadablePartialManifest(new StandardReadablePartialManifest());

        contributors //
        .setPartialManifestResolver(partialManifestResolver);

        return contributors;
    }

    private static Properties combineProperties(PropertiesSource... propertiesSources) {
        PropertiesSource[] sortedPropertiesSources = new PropertiesSource[propertiesSources.length];
        System.arraycopy(propertiesSources, 0, sortedPropertiesSources, 0, propertiesSources.length);
        // Sort by priority so that sources with lower priority are added first
        // into the final
        // Properties instance to allow for overriding by later instances
        Arrays.sort(sortedPropertiesSources, new Comparator<PropertiesSource>() {

            public int compare(PropertiesSource o1, PropertiesSource o2) {
                if (o1.getPriority() == o2.getPriority()) {
                    return 0;
                } else if (o1.getPriority() > o2.getPriority()) {
                    return 1;
                }
                return -1;
            }
        });

        Properties properties = new Properties();
        for (PropertiesSource source : propertiesSources) {
            properties.putAll(source.getProperties());
        }
        return properties;
    }

    static class HeaderRemovingManifestModifier implements ManifestModifier {

        public void modify(ManifestContents manifest) {
            manifest.getMainAttributes().remove("Import-Library");
            manifest.getMainAttributes().remove("Import-Bundle");
            manifest.getMainAttributes().remove("Export-Template");
            manifest.getMainAttributes().remove("Import-Template");
            manifest.getMainAttributes().remove("Excluded-Exports");
            manifest.getMainAttributes().remove("Excluded-Imports");
            manifest.getMainAttributes().remove("Ignored-Existing-Headers");
            manifest.getMainAttributes().remove("Test-Import-Package");
            manifest.getMainAttributes().remove("Test-Import-Library");
            manifest.getMainAttributes().remove("Test-Import-Bundle");
            manifest.getMainAttributes().remove("Import-Package");
            manifest.getMainAttributes().remove("Export-Package");
        }

    }

    static class HeaderRemovingTemplateManifestModifier implements ManifestTemplateModifier {

        public void modify(ManifestContents manifest) {
            manifest.getMainAttributes().remove("Test-Import-Package");
            manifest.getMainAttributes().remove("Test-Import-Library");
            manifest.getMainAttributes().remove("Test-Import-Bundle");
        }
    }
}