package com.ots.project.system.dept.service;
import com.ots.common.constant.UserConstants;
import com.ots.common.exception.BusinessException;
import com.ots.common.utils.StringUtils;
import com.ots.common.utils.security.ShiroUtils;
import com.ots.framework.aspectj.lang.annotation.DataScope;
import com.ots.framework.web.domain.Ztree;
import com.ots.project.system.dept.domain.Dept;
import com.ots.project.system.dept.mapper.DeptMapper;
import com.ots.project.system.role.domain.Role;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList;
import java.util.List;

@Service
public class DeptServiceImpl implements IDeptService {
    @Autowired
    private DeptMapper deptMapper;
    
    @Override
    @DataScope(deptAlias = "d")
    public List<Dept> selectDeptList(Dept dept) {
        return deptMapper.selectDeptList(dept);
    }
    
    @Override
    @DataScope(deptAlias = "d")
    public List<Ztree> selectDeptTree(Dept dept) {
        List<Dept> deptList = deptMapper.selectDeptList(dept);
        List<Ztree> ztrees = initZtree(deptList);
        return ztrees;
    }
    
    @Override
    public List<Ztree> roleDeptTreeData(Role role) {
        Long roleId = role.getRoleId();
        List<Ztree> ztrees = new ArrayList<Ztree>();
        List<Dept> deptList = selectDeptList(new Dept());
        if (StringUtils.isNotNull(roleId)) {
            List<String> roleDeptList = deptMapper.selectRoleDeptTree(roleId);
            ztrees = initZtree(deptList, roleDeptList);
        } else {
            ztrees = initZtree(deptList);
        }
        return ztrees;
    }
    
    public List<Ztree> initZtree(List<Dept> deptList) {
        return initZtree(deptList, null);
    }
    
    public List<Ztree> initZtree(List<Dept> deptList, List<String> roleDeptList) {
        List<Ztree> ztrees = new ArrayList<Ztree>();
        boolean isCheck = StringUtils.isNotNull(roleDeptList);
        for (Dept dept : deptList) {
            if (UserConstants.DEPT_NORMAL.equals(dept.getStatus())) {
                Ztree ztree = new Ztree();
                ztree.setId(dept.getDeptId());
                ztree.setpId(dept.getParentId());
                ztree.setName(dept.getDeptName());
                ztree.setTitle(dept.getDeptName());
                if (isCheck) {
                    ztree.setChecked(roleDeptList.contains(dept.getDeptId() + dept.getDeptName()));
                }
                ztrees.add(ztree);
            }
        }
        return ztrees;
    }
    
    @Override
    public int selectDeptCount(Long parentId) {
        Dept dept = new Dept();
        dept.setParentId(parentId);
        return deptMapper.selectDeptCount(dept);
    }
    
    @Override
    public boolean checkDeptExistUser(Long deptId) {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0 ? true : false;
    }
    
    @Override
    public int deleteDeptById(Long deptId) {
        return deptMapper.deleteDeptById(deptId);
    }
    
    @Override
    public int insertDept(Dept dept) {
        Dept info = deptMapper.selectDeptById(dept.getParentId());
        
        if (!UserConstants.DEPT_NORMAL.equals(info.getStatus())) {
            throw new BusinessException("部门停用，不允许新增");
        }
        dept.setCreateBy(ShiroUtils.getLoginName());
        dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        return deptMapper.insertDept(dept);
    }
    
    @Override
    @Transactional
    public int updateDept(Dept dept) {
        Dept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        Dept oldDept = selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept)) {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        dept.setUpdateBy(ShiroUtils.getLoginName());
        int result = deptMapper.updateDept(dept);
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus())) {
            
            updateParentDeptStatus(dept);
        }
        return result;
    }
    
    private void updateParentDeptStatus(Dept dept) {
        String updateBy = dept.getUpdateBy();
        dept = deptMapper.selectDeptById(dept.getDeptId());
        dept.setUpdateBy(updateBy);
        deptMapper.updateDeptStatus(dept);
    }
    
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors) {
        List<Dept> children = deptMapper.selectChildrenDeptById(deptId);
        for (Dept child : children) {
            child.setAncestors(child.getAncestors().replace(oldAncestors, newAncestors));
        }
        if (children.size() > 0) {
            deptMapper.updateDeptChildren(children);
        }
    }
    
    public void updateDeptChildren(Long deptId, String ancestors) {
        Dept dept = new Dept();
        dept.setParentId(deptId);
        List<Dept> childrens = deptMapper.selectDeptList(dept);
        for (Dept children : childrens) {
            children.setAncestors(ancestors + "," + dept.getParentId());
        }
        if (childrens.size() > 0) {
            deptMapper.updateDeptChildren(childrens);
        }
    }
    
    @Override
    public Dept selectDeptById(Long deptId) {
        return deptMapper.selectDeptById(deptId);
    }
    
    @Override
    public String checkDeptNameUnique(Dept dept) {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        Dept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue()) {
            return UserConstants.DEPT_NAME_NOT_UNIQUE;
        }
        return UserConstants.DEPT_NAME_UNIQUE;
    }
}