package foundation.data.rule.exists;

import java.util.List;

import foundation.action.ActionContext;
import foundation.action.ActionProvider;
import foundation.dao.DataPackage;
import foundation.dao.DataSource;
import foundation.dao.PackageItem;
import foundation.data.entity.Entity;
import foundation.data.entity.EntitySet;
import foundation.data.object.DataObject;

public class ExistsValidator extends ActionProvider {
	
	@Override
	protected void publishMethod() {
		addMethod("checkExists");
		
	}
	
	public void checkExists() throws Exception {
		DataPackage dataPackage = dataReader.getDataPackage();
		boolean isCheck = dataReader.getBoolean("check_exists", true);
		String dataName = dataReader.getString("dataname");
		boolean existsResult = false;
		
		if(!isCheck) {
			logger.info("dataName: {}, do not check this time", dataReader.getString("dataname"));
			return ;
		}
		
		if (dataPackage == null ) {
			logger.info("datapackage is null, cannot check exists; dataName: " + dataName);
			return ;
		}
		
		// 1.检查主表
		DataObject dataObject = dataPackage.getMasterDataObject();
		Entity masterEntity = dataPackage.getMasterEntity();
		
		masterEntity = dataPackage.getMasterEntity();
		existsResult = dataObject.existsValidate(masterEntity);
				
		// 2.检查明细
		dataPackage.loadOneDataFromDB();
		List<PackageItem> slaveItems = dataPackage.getSlaveItems();
		
		for (PackageItem item: slaveItems){
			String itemName = item.getName();
			dataObject = DataObject.getInstance(itemName);
			EntitySet detailEntitySet = dataPackage.getItemEntitySet(itemName, DataSource.DB);
			
			if(dataObject.existsValidate(detailEntitySet)) {
				existsResult = true;
			}
		}

		if(existsResult) {
			task.terminate();
		}
	}
	
	public boolean checkExists(DataPackage dataPackage, ActionContext context) throws Exception {
		dataReader = context.getDataReader();
		boolean isCheck = dataReader.getBoolean("check_exists", true);
		String dataName = dataReader.getString("dataname");
		boolean existsResult = false;
		
		if(!isCheck) {
			logger.info("dataName: {}, do not check this time", dataReader.getString("dataname"));
			return false;
		}
		
		if (dataPackage == null ) {
			logger.info("datapackage is null, cannot check exists; dataName: " + dataName);
			return false;
		}
		
		// 1.检查主表
		DataObject dataObject = dataPackage.getMasterDataObject();
		Entity masterEntity = dataPackage.getMasterEntity(DataSource.Request);
		
		existsResult = dataObject.existsValidate(masterEntity);
				
		// 2.检查明细
		dataPackage.loadOneDataFromDB();
		List<PackageItem> slaveItems = dataPackage.getSlaveItems();
		
		for (PackageItem item: slaveItems){
			String itemName = item.getName();
			dataObject = DataObject.getInstance(itemName);
			EntitySet detailEntitySet = dataPackage.getItemEntitySet(itemName, DataSource.Request);
			
			if(dataObject.existsValidate(detailEntitySet)) {
				existsResult = true;
			}
		}

		return existsResult;
	}
}