package com.eden.room.service.impl;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Collections;
import java.util.stream.Collectors;

import com.eden.room.domain.Project;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.eden.common.exception.ServiceException;
import com.eden.room.domain.Building;
import com.eden.room.mapper.BuildingMapper;
import com.eden.room.service.IBuildingService;

/**
 * 楼宇信息服务实现类
 */
@Service
public class BuildingServiceImpl implements IBuildingService {

    @Autowired
    private BuildingMapper buildingMapper;

    /**
     * 查询楼宇信息列表
     * 
     * @param building 楼宇信息查询条件
     * @return 楼宇信息集合
     */
    @Override
    public List<Building> selectBuildingList(Building building) {
        return buildingMapper.selectBuildingList(building);
    }

    /**
     * 根据楼宇ID查询楼宇信息
     * 
     * @param id 楼宇ID
     * @return 楼宇信息
     */
    @Override
    public Building selectBuildingById(Long id) {
        return buildingMapper.selectBuildingById(id);
    }

    /**
     * 新增楼宇信息
     * 
     * @param building 楼宇信息
     * @return 结果
     */
    @Override
    public int insertBuilding(Building building) {
        // 检查楼宇名称是否唯一
        if (checkBuildingNameExists(building)) {
            throw new ServiceException("楼宇名称'" + building.getBuildingName() + "'已存在");
        }
        
        // 检查楼宇编码是否唯一
        if (checkBuildingCodeExists(building)) {
            throw new ServiceException("楼宇编码'" + building.getBuildingCode() + "'已存在");
        }
        
        return buildingMapper.insertBuilding(building);
    }

    /**
     * 修改楼宇信息
     * 
     * @param building 楼宇信息
     * @return 结果
     */
    @Override
    public int updateBuilding(Building building) {
//        // 检查楼宇名称是否唯一
//        if (checkBuildingNameExists(building)) {
//            throw new ServiceException("楼宇名称'" + building.getBuildingName() + "'已存在");
//        }
//
//        // 检查楼宇编码是否唯一
//        if (checkBuildingCodeExists(building)) {
//            throw new ServiceException("楼宇编码'" + building.getBuildingCode() + "'已存在");
//        }
        
        return buildingMapper.updateBuilding(building);
    }

    /**
     * 批量删除楼宇信息
     * 
     * @param ids 需要删除的楼宇ID数组
     * @return 结果
     */
    @Override
    public int deleteBuildingByIds(List<Long> ids) {
        for (Long id : ids) {
            if (buildingMapper.checkBuildingHasFloors(id)) {
                throw new ServiceException("楼宇下存在楼层信息，不允许删除");
            }
        }
        return buildingMapper.deleteBuildingByIds(ids);
    }

    /**
     * 删除楼宇信息
     * 
     * @param id 楼宇ID
     * @return 结果
     */
    @Override
    public int deleteBuildingById(Long id) {
        if (buildingMapper.checkBuildingHasFloors(id)) {
            throw new ServiceException("楼宇下存在楼层信息，不允许删除");
        }
        return buildingMapper.deleteBuildingById(id);
    }
    
    /**
     * 楼宇统计信息
     * 
     * @param id 楼宇ID
     * @return 楼宇信息
     */
    @Override
    public Building selectBuildingStatistics(Long id) {
        return buildingMapper.selectBuildingStatistics(id);
    }
    
    /**
     * 检查楼宇名称是否存在
     * 
     * @param building 楼宇信息
     * @return 结果
     */
    public boolean checkBuildingNameExists(Building building) {
        return buildingMapper.checkBuildingNameExists(building) > 0;
    }

    @Override
    public List<Building> getBuildByIds(List<String> ids) {
        return buildingMapper.getBuildByIds(ids);
    }

    /**
     * 检查楼宇编码是否存在
     * 
     * @param building 楼宇信息
     * @return 结果
     */
    private boolean checkBuildingCodeExists(Building building) {
        return buildingMapper.checkBuildingCodeExists(building) > 0;
    }

    @Override
    public Map<String, Long> getBuildingIdsByNames(String projectId, Set<String> buildingNames) {
        if (projectId == null || buildingNames == null || buildingNames.isEmpty()) {
            return Collections.emptyMap();
        }
        
        List<Building> buildings = buildingMapper.selectBuildingListByNames(projectId, buildingNames);
        return buildings.stream()
                .collect(Collectors.toMap(
                    Building::getBuildingName,
                    Building::getId,
                    (existing, replacement) -> existing
                ));
    }
}