package me.zhengjie.modules.monitor.service.impl;

import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSONObject;
import me.zhengjie.modules.monitor.domain.Server;
import me.zhengjie.modules.monitor.repository.ServerRepository;
import me.zhengjie.modules.monitor.service.ServerService;
import me.zhengjie.modules.monitor.service.dto.ServerDTO;
import me.zhengjie.modules.monitor.service.dto.ServerQueryCriteria;
import me.zhengjie.modules.monitor.service.mapper.ServerMapper;
import me.zhengjie.utils.PageUtil;
import me.zhengjie.utils.QueryHelp;
import me.zhengjie.utils.ValidationUtil;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
import java.util.Map;

/**
* @author Zhang houying
* @date 2019-11-03
*/
@Service
@Transactional(propagation = Propagation.SUPPORTS, readOnly = true, rollbackFor = Exception.class)
public class ServerServiceImpl implements ServerService {

    private final ServerRepository serverRepository;

    private final ServerMapper serverMapper;

    public ServerServiceImpl(ServerRepository serverRepository, ServerMapper serverMapper) {
        this.serverRepository = serverRepository;
        this.serverMapper = serverMapper;
    }

    @Override
    public Map<String,Object> queryAll(ServerQueryCriteria criteria, Pageable pageable){
        Page<Server> page = serverRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
        page.forEach(server -> {
			try {
				server.setState("1");
				String url = String.format("http://%s:%d/api/serverMonitor",server.getAddress(),server.getPort());
				String res = HttpUtil.get(url,1000);
				JSONObject obj = JSONObject.parseObject(res);
				server.setCpuRate(obj.getDouble("cpuRate"));
				server.setCpuCore(obj.getInteger("cpuCore"));
				server.setMemTotal(obj.getDouble("memTotal"));
				server.setMemUsed(obj.getDouble("memUsed"));
				server.setDiskTotal(obj.getDouble("diskTotal"));
				server.setDiskUsed(obj.getDouble("diskUsed"));
				server.setSwapTotal(obj.getDouble("swapTotal"));
				server.setSwapUsed(obj.getDouble("swapUsed"));
			} catch (Exception e) {
				server.setState("0");
				e.printStackTrace();
			}
		});

        return PageUtil.toPage(page.map(serverMapper::toDto));
    }

    @Override
    public List<ServerDTO> queryAll(ServerQueryCriteria criteria){
        return serverMapper.toDto(serverRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder)));
    }

    @Override
    public ServerDTO findById(Integer id) {
        Server server = serverRepository.findById(id).orElseGet(Server::new);
        ValidationUtil.isNull(server.getId(),"Server","id",id);
        return serverMapper.toDto(server);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public ServerDTO create(Server resources) {
        return serverMapper.toDto(serverRepository.save(resources));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(Server resources) {
        Server server = serverRepository.findById(resources.getId()).orElseGet(Server::new);
        ValidationUtil.isNull( server.getId(),"Server","id",resources.getId());
        server.copy(resources);
        serverRepository.save(server);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void delete(Integer id) {
        serverRepository.deleteById(id);
    }

}
