/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package io.seata.server.storage;

import io.seata.common.util.CollectionUtils;
import io.seata.common.util.StringUtils;
import io.seata.core.model.BranchStatus;
import io.seata.core.model.BranchType;
import io.seata.core.model.GlobalStatus;
import io.seata.core.store.BranchTransactionDO;
import io.seata.core.store.GlobalTransactionDO;
import io.seata.server.console.vo.BranchSessionVO;
import io.seata.server.console.vo.GlobalSessionVO;
import io.seata.server.session.BranchSession;
import io.seata.server.session.GlobalSession;
import io.seata.server.store.SessionStorable;
import org.springframework.beans.BeanUtils;

import java.util.*;

/**
 * The session converter
 *
 * @author wangzhongxiang
 * @author doubleDimple
 */
public class SessionConverter {

	public static GlobalSession convertGlobalSession(GlobalTransactionDO globalTransactionDO, boolean lazyLoadBranch) {
		if (globalTransactionDO == null) {
			return null;
		}
		GlobalSession session = new GlobalSession(globalTransactionDO.getApplicationId(),
				globalTransactionDO.getTransactionServiceGroup(), globalTransactionDO.getTransactionName(),
				globalTransactionDO.getTimeout(), lazyLoadBranch);
		session.setXid(globalTransactionDO.getXid());
		session.setTransactionId(globalTransactionDO.getTransactionId());
		session.setStatus(GlobalStatus.get(globalTransactionDO.getStatus()));
		session.setApplicationData(globalTransactionDO.getApplicationData());
		session.setBeginTime(globalTransactionDO.getBeginTime());
		return session;
	}

	public static GlobalSession convertGlobalSession(GlobalTransactionDO globalTransactionDO) {
		return convertGlobalSession(globalTransactionDO, false);
	}

	public static BranchSession convertBranchSession(BranchTransactionDO branchTransactionDO) {
		if (branchTransactionDO == null) {
			return null;
		}
		BranchSession branchSession = new BranchSession();
		branchSession.setXid(branchTransactionDO.getXid());
		branchSession.setTransactionId(branchTransactionDO.getTransactionId());
		branchSession.setApplicationData(branchTransactionDO.getApplicationData());
		branchSession.setBranchId(branchTransactionDO.getBranchId());
		branchSession.setBranchType(BranchType.valueOf(branchTransactionDO.getBranchType()));
		branchSession.setResourceId(branchTransactionDO.getResourceId());
		branchSession.setClientId(branchTransactionDO.getClientId());
		branchSession.setResourceGroupId(branchTransactionDO.getResourceGroupId());
		branchSession.setStatus(BranchStatus.get(branchTransactionDO.getStatus()));
		return branchSession;
	}

	public static GlobalTransactionDO convertGlobalTransactionDO(SessionStorable session) {
		if (session == null || !(session instanceof GlobalSession)) {
			throw new IllegalArgumentException("The parameter of SessionStorable is not available, SessionStorable:"
					+ StringUtils.toString(session));
		}
		GlobalSession globalSession = (GlobalSession) session;

		GlobalTransactionDO globalTransactionDO = new GlobalTransactionDO();
		globalTransactionDO.setXid(globalSession.getXid());
		globalTransactionDO.setStatus(globalSession.getStatus().getCode());
		globalTransactionDO.setApplicationId(globalSession.getApplicationId());
		globalTransactionDO.setBeginTime(globalSession.getBeginTime());
		globalTransactionDO.setTimeout(globalSession.getTimeout());
		globalTransactionDO.setTransactionId(globalSession.getTransactionId());
		globalTransactionDO.setTransactionName(globalSession.getTransactionName());
		globalTransactionDO.setTransactionServiceGroup(globalSession.getTransactionServiceGroup());
		globalTransactionDO.setApplicationData(globalSession.getApplicationData());
		return globalTransactionDO;
	}

	public static BranchTransactionDO convertBranchTransactionDO(SessionStorable session) {
		if (session == null || !(session instanceof BranchSession)) {
			throw new IllegalArgumentException("The parameter of SessionStorable is not available, SessionStorable:"
					+ StringUtils.toString(session));
		}
		BranchSession branchSession = (BranchSession) session;
		BranchTransactionDO branchTransactionDO = new BranchTransactionDO();
		branchTransactionDO.setXid(branchSession.getXid());
		branchTransactionDO.setBranchId(branchSession.getBranchId());
		branchTransactionDO.setBranchType(branchSession.getBranchType().name());
		branchTransactionDO.setClientId(branchSession.getClientId());
		branchTransactionDO.setResourceGroupId(branchSession.getResourceGroupId());
		branchTransactionDO.setTransactionId(branchSession.getTransactionId());
		branchTransactionDO.setApplicationData(branchSession.getApplicationData());
		branchTransactionDO.setResourceId(branchSession.getResourceId());
		branchTransactionDO.setStatus(branchSession.getStatus().getCode());
		return branchTransactionDO;
	}

	public static void convertToGlobalSessionVo(List<GlobalSessionVO> result, List<GlobalSession> globalSessions) {
		if (CollectionUtils.isNotEmpty(globalSessions)) {
			for (GlobalSession globalSession : globalSessions) {
				GlobalSessionVO globalSessionVO = new GlobalSessionVO();
				BeanUtils.copyProperties(globalSession, globalSessionVO);
				globalSessionVO.setStatus(globalSession.getStatus().getCode());
				globalSessionVO.setTimeout(Long.valueOf(globalSession.getTimeout()));
				globalSessionVO.setBranchSessionVOs(converToBranchSession(globalSession.getBranchSessions()));
				result.add(globalSessionVO);
			}
		}
	}

	public static Set<BranchSessionVO> converToBranchSession(List<BranchSession> branchSessions) {
		Set<BranchSessionVO> branchSessionVOs = new HashSet<>(branchSessions.size());
		if (CollectionUtils.isNotEmpty(branchSessions)) {
			for (BranchSession branchSession : branchSessions) {
				BranchSessionVO branchSessionVONew = new BranchSessionVO();
				BeanUtils.copyProperties(branchSession, branchSessionVONew);

				branchSessionVONew.setBranchType(branchSession.getBranchType().name());
				branchSessionVONew.setStatus(branchSession.getStatus().getCode());
				branchSessionVOs.add(branchSessionVONew);
			}
		}
		return branchSessionVOs;
	}

	/**
	 * convert GlobalSession to GlobalSessionVO
	 * @param filteredSessions the GlobalSession list
	 * @return the GlobalSessionVO list
	 */
	public static List<GlobalSessionVO> convertGlobalSession(List<GlobalSession> filteredSessions) {

		if (CollectionUtils.isEmpty(filteredSessions)) {
			return Collections.emptyList();
		}

		final ArrayList<GlobalSessionVO> result = new ArrayList<>(filteredSessions.size());

		for (GlobalSession session : filteredSessions) {
			result.add(new GlobalSessionVO(session.getXid(), session.getTransactionId(), session.getStatus().getCode(),
					session.getApplicationId(), session.getTransactionServiceGroup(), session.getTransactionName(),
					(long) session.getTimeout(), session.getBeginTime(), session.getApplicationData(),
					convertBranchSession(session.getBranchSessions())));
		}
		return result;
	}

	/**
	 * convert BranchSession to BranchSessionVO
	 * @param branchSessions the BranchSession list
	 * @return the BranchSessionVO list
	 */
	public static Set<BranchSessionVO> convertBranchSession(List<BranchSession> branchSessions) {

		if (CollectionUtils.isEmpty(branchSessions)) {
			return Collections.emptySet();
		}

		final Set<BranchSessionVO> result = new HashSet<>(branchSessions.size());

		for (BranchSession session : branchSessions) {
			result.add(new BranchSessionVO(session.getXid(), session.getTransactionId(), session.getBranchId(),
					session.getResourceGroupId(), session.getResourceId(), session.getBranchType().name(),
					session.getStatus().getCode(), session.getClientId(), session.getApplicationData()));
		}
		return result;
	}

}
