package org.openslx.dozmod.permissions;

import org.apache.log4j.Logger;
import org.openslx.bwlp.thrift.iface.ImageDetailsRead;
import org.openslx.bwlp.thrift.iface.ImagePermissions;
import org.openslx.dozmod.thrift.Session;

/**
 * Class for checking, whether user can edit given image
 */
public class ImagePerms {

	private final static Logger LOGGER = Logger.getLogger(ImagePerms.class);

	public static boolean canEdit(final ImageDetailsRead image){
		// check if we are the owner of the image
		if(image.getOwnerId().equals(Session.getUserId())) 
			return true;
		// we are not, lets see which permissions we have
		ImagePermissions perms = image.getUserPermissions();
		if(perms != null) {
			LOGGER.debug("You can: " + perms);
		} else {
			// no user specific permissions, check defaults
			perms = image.getDefaultPermissions();
			if (perms != null) {
				LOGGER.debug("Everybody can: " + perms);
			}
		}
		return perms != null && (perms.admin || perms.edit);
	}
}