package org.traccar.reports;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collection;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.StreamingOutput;

import org.traccar.Context;

public final class ReportUtils {

    private ReportUtils() {
    }

    public static Collection<Long> getReportedDevices(Collection<Long> deviceIds, Collection<Long> groupIds) {
        Collection<Long> result = new ArrayList<>();
        result.addAll(deviceIds);
        for (long groupId : groupIds) {
            result.addAll(Context.getPermissionsManager().getGroupDevices(groupId));
        }
        return result;
    }

    public static StreamingOutput getOut(final byte[] csvBytes) {
        return new StreamingOutput() {
            @Override
            public void write(OutputStream out) throws IOException, WebApplicationException {
                out.write(csvBytes);
            }
        };
    }
}