/*
 * Copyright (c) 2012-2015 iWave Software LLC
 * All Rights Reserved
 */
package com.emc.sa.service.vipr.block;

import java.net.URI;
import java.util.List;

import com.emc.sa.engine.bind.Bindable;
import com.emc.sa.engine.bind.BindingUtils;
import com.emc.sa.engine.service.Service;
import com.emc.sa.service.vipr.ViPRService;
import com.emc.sa.service.vipr.block.BlockStorageUtils.HostVolumeParams;
import com.emc.sa.service.vipr.block.BlockStorageUtils.VolumeTable;
import com.google.common.collect.Lists;

@Service("CreateBlockStorageForHost")
public class CreateBlockStorageForHostService extends ViPRService {
    
    @Bindable(itemType = VolumeTable.class)
    protected VolumeTable[] volumeTable;

    @Bindable
    protected HostVolumeParams hostVolumeParams = new HostVolumeParams();
    
    protected List<CreateBlockVolumeForHostHelper> createBlockVolumeHelpers = Lists.newArrayList();

    @Override
    public void init() throws Exception {
        super.init();

        // for each pair of volume name and size, create a createBlockVolumeHelper
        for (VolumeTable volumes : volumeTable) {
            CreateBlockVolumeForHostHelper createBlockVolumeForHostHelper = new CreateBlockVolumeForHostHelper();
            BindingUtils.bind(createBlockVolumeForHostHelper, BlockStorageUtils.createParam(volumes, hostVolumeParams));
            createBlockVolumeHelpers.add(createBlockVolumeForHostHelper);
        }
    }
    
    @Override
    public void precheck() {
        for (CreateBlockVolumeForHostHelper helper : createBlockVolumeHelpers) {
            helper.precheck();
        }
        BlockStorageUtils.checkVolumeLimit(getClient(), hostVolumeParams.project);
    }

    @Override
    public void execute() {
        if (!createBlockVolumeHelpers.isEmpty()) {
            List<URI> volumeIds = Lists.newArrayList();
            volumeIds.addAll(BlockStorageUtils.createMultipleVolumes(createBlockVolumeHelpers));
            createBlockVolumeHelpers.get(0).exportVolumes(volumeIds);
        }
    }
}