/* Copyright c 2005-2012.
* Licensed under GNU LESSER General Public License, Version 3.
* http://www.gnu.org/licenses
*/
package org.beangle.ems.avatar.service;
import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.beangle.commons.collection.CollectUtils;
import org.beangle.commons.collection.page.Page;
import org.beangle.commons.collection.page.PageLimit;
import org.beangle.commons.collection.page.PagedList;
import org.beangle.commons.collection.page.Pages;
import org.beangle.commons.property.PropertyConfig;
import org.beangle.commons.property.PropertyConfigEvent;
import org.beangle.commons.property.PropertyConfigListener;
import org.beangle.ems.avatar.Avatar;
import org.beangle.ems.avatar.model.FileAvatar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 基于文件系统的照片库
*
* @author chaostone
*/
public class FileSystemAvatarBase extends AbstractAvatarBase implements PropertyConfigListener {
private static final Logger logger = LoggerFactory.getLogger(FileSystemAvatarBase.class);
// 照片路径
private String avatarDir;
public Page<String> getAvatarNames(PageLimit limit) {
if (null == avatarDir) {
logger.error("avatar dir property not config properly");
return Pages.emptyPage();
}
File file = new File(avatarDir);
if (!file.exists()) { return Pages.emptyPage(); }
String[] names = file.list();
List<String> fileNames = CollectUtils.newArrayList();
for (int i = 0; i < names.length; i++) {
String name = StringUtils.substringBefore(names[i], ".");
String ext = StringUtils.substringAfter(names[i], ".");
if (StringUtils.isNotBlank(name) && containType(ext)) {
fileNames.add(name);
}
}
Collections.sort(fileNames);
return new PagedList<String>(fileNames, limit);
}
/**
* 根据名称和类型得到文件绝对路径
*
* @param name
* @param type
* @return
*/
public String getAbsoluteAvatarPath(String name, String type) {
StringBuilder sb = new StringBuilder(avatarDir);
sb.append(name).append('.').append(type.toLowerCase());
return sb.toString();
}
public Avatar getAvatar(String name) {
if (StringUtils.contains(name, '.')) {
File file = new File(avatarDir + name);
if (file.exists()) { return new FileAvatar(file); }
} else {
for (int i = 0; i < typeList.size(); i++) {
StringBuilder sb = new StringBuilder(avatarDir);
sb.append(name).append('.').append(typeList.get(i));
File file = new File(sb.toString());
if (file.exists()) { return new FileAvatar(file); }
}
}
return null;
}
public String getAvatarDir() {
return avatarDir;
}
public void setAvatarDir(String avatarDir) {
if (null != avatarDir) {
if (!avatarDir.endsWith(File.separator)) {
this.avatarDir = avatarDir + File.separator;
} else {
this.avatarDir = avatarDir;
}
} else {
this.avatarDir = null;
}
}
public String getDescription() {
return "路径:" + avatarDir + " <br><em>如需改变该位置,请配置系统参数:fileSystemAvatarBase.avatarDir.</em>";
}
public void setPropertyConfig(PropertyConfig config) {
if (null != config) {
config.addConfigListener(this);
setAvatarDir(config.get(String.class, "fileSystemAvatarBase.avatarDir"));
}
}
public void onConfigEvent(PropertyConfigEvent event) {
setAvatarDir(event.getSource().get(String.class, "fileSystemAvatarBase.avatarDir"));
}
public boolean updateAvatar(String name, File avatar, String type) {
try {
FileUtils.copyFile(avatar, new File(getAbsoluteAvatarPath(name, type)));
} catch (IOException e) {
logger.error("copy avator error", e);
return false;
}
return true;
}
}