package com.yunhai.userhome.service.impl;

import com.yunhai.platform.apistd.BizException;
import com.yunhai.platform.utils.exception.ErrorCode;
import com.yunhai.userhome.entity.MenuBar;
import com.yunhai.userhome.entity.UserCurrentRole;
import com.yunhai.userhome.repository.MenuBarRepository;
import com.yunhai.userhome.service.IMenuBarService;
import com.yunhai.userhome.service.IUserCurrentRoleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

/**
 * 菜单栏服务（对齐旧 UserHome service.impl.MenuBarService）。
 */
@Service
public class MenuBarServiceImpl implements IMenuBarService {

    @Autowired
    private IUserCurrentRoleService userCurrentRoleService;

    @Autowired
    private MenuBarRepository menuBarRepository;

    @Override
    public List<MenuBar> getMenuBarList(Integer schId) {
        List<MenuBar> list;
        if (schId == 0)
            list = menuBarRepository.findBySchId(0);
        else
            list = menuBarRepository.findBySchIdIn(Arrays.asList(0, schId));
        list.forEach(x -> {
            Boolean isHide = x.getHideSchIds().contains(schId);
            x.setIsShow(!isHide);
            x.setIsEdit(x.getSchId().equals(schId));
        });
        list = list.stream().sorted(Comparator.comparing(MenuBar::getOrderNum, Comparator.nullsLast(Integer::compareTo))).collect(Collectors.toList());
        return list;
    }

    @Override
    public List<MenuBar> findMenuBarById(Integer userId) {
        UserCurrentRole userCurrentRole = userCurrentRoleService.findById(userId)
                .orElseThrow(() -> new BizException(ErrorCode.INTERNAL_SERVER_ERROR));
        List<MenuBar> list = getMenuBarList(userCurrentRole.getSchId());
        List<MenuBar> result = list.stream().filter(MenuBar::getIsShow).collect(Collectors.toList());
        result = result.stream().sorted(Comparator.comparing(MenuBar::getOrderNum, Comparator.nullsLast(Integer::compareTo))).collect(Collectors.toList());
        return result;
    }

    @Override
    public void saveMenuBar(MenuBar menuBar) {
        if (menuBar.getId() != null) {
            Optional<MenuBar> optional = menuBarRepository.findById(menuBar.getId());
            if (optional.isPresent()) {
                menuBar.setHideSchIds(optional.get().getHideSchIds());
            }
        }
        menuBarRepository.save(menuBar);
    }

    @Override
    public void saveMenuBarOrderNum(Integer id, Integer orderNum) {
        Optional<MenuBar> optionalMenuBar = menuBarRepository.findById(id);
        if (!optionalMenuBar.isPresent())
            throw new BizException(ErrorCode.INTERNAL_SERVER_ERROR);
        MenuBar menuBar = optionalMenuBar.get();
        menuBar.setOrderNum(orderNum);
        menuBarRepository.save(menuBar);
    }

    @Override
    public void toggleMenuBarShow(Integer id, Integer schId) {
        Optional<MenuBar> optionalMenuBar = menuBarRepository.findById(id);
        if (!optionalMenuBar.isPresent())
            throw new BizException(ErrorCode.INTERNAL_SERVER_ERROR);
        MenuBar menuBar = optionalMenuBar.get();
        Integer index = menuBar.getHideSchIds().indexOf(schId);
        List<Integer> schIds = menuBar.getHideSchIds();
        if (index.equals(-1))
            schIds.add(schId);
        else
            schIds.remove(Integer.valueOf(schId));
        menuBar.setHideSchIds(schIds);
        menuBarRepository.save(menuBar);
    }

    @Override
    public void deleteMenuBar(Integer id) {
        Optional<MenuBar> optionalMenuBar = menuBarRepository.findById(id);
        if (!optionalMenuBar.isPresent())
            throw new BizException(ErrorCode.INTERNAL_SERVER_ERROR);
        menuBarRepository.delete(optionalMenuBar.get());
    }
}