package foundation.dao;

import java.util.Iterator;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import foundation.data.entity.Entity;
import foundation.data.object.DataObject;
import foundation.util.ID;
import foundation.util.MapList;
import foundation.util.Util;

public class DataPackageMeta implements Iterable<PackageItemMeta> {

	protected static Logger logger;
	public static final String PreFix = "pkg_";
	private String id; 
	private String name;
	private String hostName;
	private String remark;
	private MapList<String, PackageItemMeta> items;
	private PackageItemMeta masterMeta;
	private DataObject masterDataObject;
	private HostLimit hostLimit;
	
	static {
		logger = LogManager.getLogger(DataPackageMeta.class);
	}
	
	public DataPackageMeta() {
		items = new MapList<String, PackageItemMeta>();
	}
	
	public DataPackageMeta(DataObject dataObject) {
		//1. package meta
		id = PreFix + ID.newValue();
		name = dataObject.getDataName();
		remark = "系统自动创建";
		items = new MapList<String, PackageItemMeta>();
		
		//2. package master detail meta
        PackageItemMeta itemMeta = new PackageItemMeta(dataObject);
        itemMeta.setType(PackageItemType.Master);
        loadOneDetail(itemMeta);
	}
	
	public DataPackageMeta(PackageItemMeta itemMeta) {
		//1. package meta
		id = PreFix + ID.newValue();
		name = itemMeta.getName();
		remark = "系统自动创建";
		items = new MapList<String, PackageItemMeta>();
		
		//2. package master detail meta
        loadOneDetail(itemMeta);
        
        //3.
		masterMeta = itemMeta;
		masterDataObject = itemMeta.getDataObject();
	}

	public static DataPackageMeta getInstance(String dataName) {
		DataPackageMetaContainer container = DataPackageMetaContainer.getInstance();
		return container.get(dataName);
	}
	
	public void load(Entity entity) throws ClassNotFoundException {
		id = entity.getString("id");
		name = entity.getString("name");
		hostName = entity.getString("host_name");
		remark = entity.getString("remark");
		
		if (Util.isEmpty(id)) {
			id = name;
		}
	}
	
	public void loadOneDetail(PackageItemMeta itemMeta) {
		//1. add to items
		String key = itemMeta.getName();
		items.add(key, itemMeta);
		
		//2. set master data object
		PackageItemType type = itemMeta.getType();
		
		if (PackageItemType.Master == type) {
			masterMeta = itemMeta;
			masterDataObject = itemMeta.getDataObject();
		}
	}
	
	@Override
	public Iterator<PackageItemMeta> iterator() {
		return items.iterator();
	}
	
	public PackageItemMeta getItem(String name) {
		return items.get(name);
	}
	
	public String getId() {
		return id;
	}

	public String getName() {
		return name;
	}
	
	public String getRemark() {
		return remark;
	}
	
	public DataObject getMasterDataObject() {
		return masterDataObject;
	}

	public PackageItemMeta getMasterMeta() {
		return masterMeta;
	}

	public String getHostName() {
		return hostName;
	}
	
	public int getItemCount() {
		return items.size();
	}

	public void setHostLimit(HostLimit hostLimit) {
		this.hostLimit = hostLimit;
	}

	public HostLimit getHostLimit() {
		return hostLimit;
	}

	public boolean containsHostItemLimits() {
		return hostLimit != null;
	}
	
	public Set<String> getHostItemLimits(String typeCode, boolean includeReadOnly) {
		if (hostLimit == null) {
			return null;
		}
		
		return hostLimit.itemLimits(typeCode, includeReadOnly);
	}

}