/* 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.felix.sandbox.obr.plugin;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.maven.plugin.logging.Log;
import org.apache.maven.project.MavenProject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
 * this class describe all information by bundle.
 * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
 */
public class ResourcesBundle {
    /**
     * store the bundle symbolic name.
     */
    private String m_symbolicName;

    /**
     * store the bundle presentation name.
     */
    private String m_presentationName;

    /**
     * store the bundle version.
     */
    private String m_version;

    /**
     * store the bundle URI.
     */
    private String m_uri;

    /**
     * store the bundle description.
     */
    private String m_description;

    /**
     * store the bundle size.
     */
    private String m_size;

    /**
     * store the bundle documentation.
     */
    private String m_documentation;

    /**
     * store the bundle source.
     */
    private String m_source;

    /**
     * store the bundle license.
     */
    private String m_license;

    /**
     * store the bundle id.
     */
    private String m_id;

    /**
     * store the bundle categories.
     */
    private List m_category = new ArrayList();

    /**
     * store the bundle capabilities.
     */
    private List m_capability = new ArrayList();

    /**
     * store the bundle requirement.
     */
    private List m_require = new ArrayList();

    /**
     * get the plugin logger.
     */
    private Log m_logger;

    /**
     * initialize logger.
     * @param log log use by plugin
     */
    public ResourcesBundle(Log log) {
        m_logger = log;
    }

    public List getCapability() {
        return m_capability;
    }

    public void setCapability(List capability) {
        this.m_capability = capability;
    }

    public List getCategory() {
        return m_category;
    }

    public void setCategory(List category) {
        this.m_category = category;
    }

    public String getLicense() {
        return m_license;
    }

    public void setLicense(String license) {
        this.m_license = license;
    }

    public String getDescription() {
        return m_description;
    }

    public void setDescription(String description) {
        this.m_description = description;
    }

    public String getDocumentation() {
        return m_documentation;
    }

    public void setDocumentation(String documentation) {
        this.m_documentation = documentation;
    }

    public String getPresentationName() {
        return m_presentationName;
    }

    public void setPresentationName(String name) {
        m_presentationName = name;
    }

    public String getSize() {
        return m_size;
    }

    public void setSize(String size) {
        this.m_size = size;
    }

    public String getSymbolicName() {
        return m_symbolicName;
    }

    public void setSymbolicName(String name) {
        m_symbolicName = name;
    }

    public String getUri() {
        return m_uri;
    }

    public void setUri(String url) {
        this.m_uri = url;
    }

    public String getVersion() {
        return m_version;
    }

    public void setVersion(String version) {
        this.m_version = version;
    }

    public List getRequire() {
        return m_require;
    }

    public void setRequire(List require) {
        this.m_require = require;
    }

    public String getSource() {
        return m_source;
    }

    public void setSource(String source) {
        this.m_source = source;
    }

    public String getId() {
        return m_id;
    }

    public void setId(String id) {
        this.m_id = id;
    }

    /**
     * add a new capability for this bundle description.
     * @param capability the Capability to add
     */
    public void addCapability(Capability capability) {
        m_capability.add(capability);
    }

    /**
     * add a new requirement for this bundle description.
     * @param require th Require to add
     */
    public void addRequire(Require require) {
        m_require.add(require);
    }

    /**
     * add a new category for this bundle decription.
     * @param category the Category to add
     */
    public void addCategory(Category category) {
        m_category.add(category);
    }

    /**
     * transform this object to Node.
     * tranform all sub-object to node also
     * @param father father document for create Node
     * @return node
     */
    public Node getNode(Document father) {
        // return the complete resource tree
        if (!this.isValid() || this.getId() == null) {
            m_logger.error("those properties was not defined:" + this.getInvalidProperties());
            return null;
        }

        Element resource = father.createElement("resource");
        Element description = father.createElement("description");
        Element size = father.createElement("size");
        Element documentation = father.createElement("documentation");
        Element source = father.createElement("source");
        Element license = father.createElement("license");

        resource.setAttribute("id", this.getId());
        resource.setAttribute("symbolicname", this.getSymbolicName());
        resource.setAttribute("presentationname", this.getPresentationName());
        resource.setAttribute("uri", this.getUri());
        resource.setAttribute("version", this.getVersion());

        XmlHelper.setTextContent(description,this.getDescription());
        resource.appendChild(description);

        XmlHelper.setTextContent(size,this.getSize());
        resource.appendChild(size);

        if (this.getDocumentation() != null) {
            XmlHelper.setTextContent(documentation,this.getDocumentation());
            resource.appendChild(documentation);
        }

        if (this.getSource() != null) {
            XmlHelper.setTextContent(source,this.getSource());
            resource.appendChild(source);
        }

        if (this.getLicense() != null) {
            XmlHelper.setTextContent(license, this.getLicense());
            resource.appendChild(license);
        }

        List list = (ArrayList) this.getNodeCategories(father);
        for (int i = 0; i < list.size(); i++) {
            resource.appendChild((Node) list.get(i));
        }

        list = (ArrayList) this.getNodeCapabilities(father);
        for (int i = 0; i < list.size(); i++) {
            resource.appendChild((Node) list.get(i));
        }

        list = (ArrayList) this.getNodeRequirement(father);
        for (int i = 0; i < list.size(); i++) {
            resource.appendChild((Node) list.get(i));
        }

        return resource;
    }

    /**
     * this method gets information form pom.xml to complete missing data from those given by user.
     * @param project project information given by maven
     * @param ebi bundle information extracted from bindex
     * @return true
     */
    public boolean construct(MavenProject project, ExtractBindexInfo ebi) {

        if (ebi.getPresentationName() != null) {
            this.setPresentationName(ebi.getPresentationName());
            if (project.getName() != null) { m_logger.warn("pom property override:<presentationname> " + project.getName()); }
        } else {
            this.setPresentationName(project.getName());
        }

        if (ebi.getSymbolicName() != null) {
            this.setSymbolicName(ebi.getSymbolicName());
            if (project.getArtifactId() != null) { m_logger.warn("pom property override:<symbolicname> " + project.getArtifactId()); }
        } else {
            this.setSymbolicName(project.getArtifactId());
        }

        if (ebi.getVersion() != null) {
            this.setVersion(ebi.getVersion());
            if (project.getVersion() != null) { m_logger.warn("pom property override:<version> " + project.getVersion()); }
        } else {
            this.setVersion(project.getVersion());
        }

        if (ebi.getDescription() != null) {
            this.setDescription(ebi.getDescription());
            if (project.getDescription() != null) { m_logger.warn("pom property override:<description> " + project.getDescription()); }
        } else {
            this.setDescription(project.getDescription());
        }

        if (ebi.getDocumentation() != null) {
            this.setDocumentation(ebi.getDocumentation());
            if (project.getUrl() != null) { m_logger.warn("pom property override:<documentation> " + project.getUrl()); }
        } else {
            this.setDocumentation(project.getUrl());
        }

        if (ebi.getSource() != null) {
            this.setSource(ebi.getSource());
            if (project.getScm() != null) { m_logger.warn("pom property override:<source> " + project.getScm()); }
        } else {
            String src = null;
            if (project.getScm() != null) { src = project.getScm().getUrl(); }
            this.setSource(src);
        }

        if (ebi.getLicense() != null) {
            this.setLicense(ebi.getLicense());
            String lic = null;
            List l = project.getLicenses();
            Iterator it = l.iterator();
            while (it.hasNext()) {
                if (it.next() != null) {
                    m_logger.warn("pom property override:<source> " + lic);
                    break;
                }
            }
        } else {
            String lic = null;
            List l = project.getLicenses();
            Iterator it = l.iterator();
            while (it.hasNext()) {
                lic = it.next() + ";";
            }

            this.setLicense(lic);
        }

        // create the first capability (ie : bundle)
        Capability capability = new Capability();
        capability.setName("bundle");
        PElement p = new PElement();
        p.setN("manifestversion");
        p.setV("2");
        capability.addP(p);

        p = new PElement();
        p.setN("presentationname");
        p.setV(this.getPresentationName());
        capability.addP(p);

        p = new PElement();
        p.setN("symbolicname");
        p.setV(this.getSymbolicName());
        capability.addP(p);

        p = new PElement();
        p.setN("version");
        p.setT("version");
        p.setV(this.getVersion());
        capability.addP(p);

        this.addCapability(capability);

        List capabilities = (ArrayList) ebi.getCapabilities();
        for (int i = 0; i < capabilities.size(); i++) {
            this.addCapability((Capability) capabilities.get(i));
        }

        List requirement = (ArrayList) ebi.getRequirement();
        for (int i = 0; i < requirement.size(); i++) {
            this.addRequire((Require) requirement.get(i));
        }

        // we also add the goupId
        Category category = new Category();
        category.setId(project.getGroupId());
        this.addCategory(category);

        return true;
    }

    /**
     * return if the bundle resource is complete.
     * @return false if an information is missing, else true
     */
    public boolean isValid() {
        // we must verify require properties are present
        return this.getPresentationName() != null 
            && this.getSymbolicName() != null
            && this.getVersion() != null 
            && this.getUri() != null 
            && this.getSize() != null;
    }

    /**
     * test if this bundle has the same symbolicname, presentationname and version number.
     * @param symbolicName symbolicName to compare with current bundle
     * @param presentationName presentationName to compare with current bundlde
     * @param version version to compare with current bundle
     * @return true if the information are the same, else false
     */
    public boolean isSameBundleResource(String symbolicName, String presentationName, String version) {
        if (this.isValid()) {
            boolean result;
            result = (symbolicName.compareTo(this.getSymbolicName()) == 0) && (version.compareTo(this.getVersion()) == 0) && (presentationName.compareTo(this.getPresentationName()) == 0);
            return result;

        } else {
            return false;
        }

    }

    /**
     * return a list of categories transformed to node.
     * @param father father document to create node from same document
     * @return List of Node
     */
    private List getNodeCategories(Document father) {
        List listNode = new ArrayList();
        List listCategory = (ArrayList) this.getCategory();
        for (int i = 0; i < listCategory.size(); i++) {
            listNode.add(((Category) listCategory.get(i)).getNode(father));
        }
        return listNode;
    }

    /**
     * return a list of capabilities transformed to node.
     * @param father father document to create node from same document
     * @return List of Node
     */
    private List getNodeCapabilities(Document father) {
        List listNode = new ArrayList();
        List listCapability = (ArrayList) this.getCapability();
        for (int i = 0; i < listCapability.size(); i++) {
            listNode.add(((Capability) listCapability.get(i)).getNode(father));
        }
        return listNode;
    }

    /**
     * return a list of requirement transformed to node.
     * @param father father document to create node from same document
     * @return List of Node.
     */
    private List getNodeRequirement(Document father) {
        List listNode = new ArrayList();
        List listRequirement = (ArrayList) this.getRequire();
        for (int i = 0; i < listRequirement.size(); i++) {
            listNode.add(((Require) listRequirement.get(i)).getNode(father));
        }
        return listNode;
    }

    /**
     * return the list of properties not define in this bundle resource.
     * @return list of properties not define
     */
    private String getInvalidProperties() {
        if (this.isValid()) {
            if (this.getId() == null) {
                return "id";
            } else {
                return "";
            }
        }
        String result = "";
        if (this.getPresentationName() == null) { result = result + "presentationName;"; }
        if (this.getSymbolicName() == null) { result = result + "symbolicName;"; }
        if (this.getVersion() == null) { result = result + "version;"; }
        if (this.getUri() == null) { result = result + "Uri;"; }
        if (this.getSize() == null) { result = result + "Size"; }
        return result;
    }

}