Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.foldertree;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import com.google.gwt.http.client.Header;

import com.google.gwt.http.client.Response;

import com.google.gwt.http.client.URL;

import com.google.gwt.i18n.client.DateTimeFormat;

import com.google.gwt.i18n.client.NumberFormat;

import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;

import com.google.gwt.json.client.JSONObject;

import com.google.gwt.json.client.JSONValue;

public class File extends Resource {

    private String name;

    private String hash;

    private int version;

    private long bytes;

    private String contentType;

    private Date lastModified;

    private String modifiedBy;

    private Date versionTimestamp;

    private String path;

    private String owner;

    private String container;

    private Folder parent;

    private Map<String, String> meta = new HashMap<String, String>();

    private boolean published;

    private String publicUri;

    private Map<String, Boolean[]> permissions = new HashMap<String, Boolean[]>();

    private String inheritedPermissionsFrom;

    public String getContentType() {

        return contentType;

    }

    public String getHash() {

        return hash;

    }

    @Override

        public Date getLastModified() {

        return lastModified;

    }

    public String getModifiedBy() {

        return modifiedBy;

    }

    public String getName() {

        return name;

    }

    public int getVersion() {

        return version;

    }

    public Date getVersionTimestamp() {

        return versionTimestamp;

    }

    public String getUri() {

        return "/" + container + "/" + path;

    }

    public String getOwner() {

        return owner;

    }

    public String getPath() {

        return path;

    }

    public long getBytes() {

        return bytes;

    }

    public String getSizeAsString() {

        NumberFormat nf = NumberFormat.getFormat("######.#");

        if (bytes < 1024)

            return String.valueOf(bytes) + " B";

        else if (bytes < 1024 * 1024)

            return nf.format(Double.valueOf(bytes)/(1024)) + " KB";

        else if (bytes < 1024 * 1024 * 1024)

            return nf.format(Double.valueOf(bytes)/(1024 * 1024)) + " MB";

        return nf.format(Double.valueOf(bytes)/(1024 * 1024 * 1024)) + " GB";

    }

    public boolean isShared() {

        return !permissions.isEmpty() || published;

    }

    public void populate(Folder _parent, JSONObject o, String _owner, String _container) {

        this.parent = _parent;

        path = unmarshallString(o, "name");

        if (parent != null && parent.getPrefix().length() > 0)

                name = path.substring(parent.getPrefix().length() + 1);

        else

            name = path;

        this.owner = _owner;

        hash = unmarshallString(o, "hash");

        bytes = unmarshallLong(o, "bytes");

        version = unmarshallInt(o, "version");

        contentType = unmarshallString(o, "content_type");

        lastModified = unmarshallDate(o, "last_modified");

        modifiedBy = unmarshallString(o, "modified_by");

        versionTimestamp = unmarshallDate(o, "version_timestamp");

        published = o.containsKey("x_object_public") ? true : false;

        publicUri = unmarshallString(o, "x_object_public");

        this.container = _container;

        inheritedPermissionsFrom = unmarshallString(o, "x_object_shared_by");

        String rawPermissions = unmarshallString(o, "x_object_sharing");

        if (rawPermissions != null)

            parsePermissions(rawPermissions);

        JSONValue metaValue = o.get("x_object_meta");

        if (metaValue != null) {

                JSONObject metaObj = metaValue.isObject();

                if (metaObj != null) {

                        for (String key: metaObj.keySet()) {

                    meta.put(key, unmarshallString(metaObj, key));

                        }

                }

        }

    }

    private void parsePermissions(String rawPermissions) {

        String[] readwrite = rawPermissions.split(";");

        for (String s : readwrite) {

            String[] part = s.split("=");

            String perm = part[0].trim();

            String[] users = part[1].split(",");

            for (String u : users) {

                String user = u.trim();

                Boolean[] userPerm = permissions.get(u);

                if (userPerm == null) {

                    userPerm = new Boolean[2];

                    permissions.put(user, userPerm);

                }

                if (perm.equals("read")) {

                    userPerm[0] = Boolean.TRUE;

                }

                else if (perm.equals("write")) {

                    userPerm[1] = Boolean.TRUE;

                }

            }

        }

    }

    @Override

        public boolean equals(Object other) {

        if (other instanceof File) {

            File o = (File) other;

            return name.equals(o.getName());

        }

        return false;

    }

    @Override

        public int hashCode() {

        return name.hashCode();

    }

    public String getContainer() {

        return container;

    }

    public static File createFromResponse(String owner, Response response, File result) {

        result.populate(owner, response);

        return result;

    }

    private void populate(String _owner, Response response) {

        this.owner = _owner;

        published = false;

        publicUri = null;

        permissions.clear();

        for (Header h : response.getHeaders()) {

                if (h == null)

                        continue; //IE bug. h cannot be null in the general case

            String header = h.getName();

            if (header.startsWith("X-Object-Meta-"))

                meta.put(URL.decodePathSegment(header.substring("X-Object-Meta-".length())), URL.decodePathSegment(h.getValue()));

            else if (header.equals("X-Object-Sharing")) {

                String rawPermissions = h.getValue();

                parsePermissions(URL.decodePathSegment(rawPermissions));

            }

            else if (header.equals("X-Object-Shared-By")) {

                inheritedPermissionsFrom = URL.decodePathSegment(h.getValue());

            }

            else if (header.equals("Content-Length")) {

                bytes = Long.parseLong(h.getValue());

            }

            else if (header.equals("Content-Type")) {

                    contentType = h.getValue();

            }

            else if (header.equals("Last-Modified")) {

                    lastModified = DateTimeFormat.getFormat(PredefinedFormat.RFC_2822).parse(h.getValue());

            }

            else if (header.equals("X-Object-Public")) {

                    published = true;

                    publicUri = h.getValue();

            }

        }

    }

    public Folder getParent() {

        return parent;

    }

    public Map<String, String> getMeta() {

        return meta;

    }

    public boolean isPublished() {

        return published;

    }

    public String getPublicUri() {

        return publicUri;

    }

    public Map<String, Boolean[]> getPermissions() {

        return permissions;

    }

    public String getInheritedPermissionsFrom() {

        return inheritedPermissionsFrom;

    }

}