package com.example.demo.serviceImpl.coin;

import com.example.demo.Util.JWTUtil;
import com.example.demo.domain.entity.Admin;
import com.example.demo.domain.entity.Role;
import com.example.demo.domain.vo.coin.ConsumeUser;
import com.example.demo.domain.vo.coin.MenuVo;
import com.example.demo.domain.vo.coin.Result;
import com.example.demo.domain.vo.coin.RoleVo;
import com.example.demo.mapper.coin.MenuMapper;
import com.example.demo.mapper.coin.RoleMapper;
import com.example.demo.service.coin.MenuService;
import com.example.demo.service.coin.RoleService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import java.util.*;

/**
 * @program: gold-java
 * @ClassName RoleServiceImpl
 * @description:
 * @author: Double
 * @create: 2025−07-15 11:30
 * @Version 1.0
 **/

@Service
public class RoleServiceImpl implements RoleService {

    @Autowired
    private RoleMapper roleMapper;
    @Autowired
    private MenuService menuService;
    @Autowired
    private MenuMapper menuMapper;

    //新增角色
    @Override
    @Transactional
    public Result addRole(RoleVo roleVo) {
        roleVo.setRoleName(roleVo.getRoleName().trim());
        // 对角色名进行去空格处理后判断是否为空
        if (roleVo.getRoleName() == null || roleVo.getRoleName().isEmpty()) {
            return Result.error("角色名为空");
        }
        // 新增校验：角色名长度需在 2 - 20 之间
        if (roleVo.getRoleName().length() < 2 || roleVo.getRoleName().length() > 20) {
            return Result.error("角色名长度需在2-20个字符之间");
        }
        if (roleMapper.selectByRoleName(roleVo.getRoleName()) != null) {
            return Result.error("角色名重复");
        }


        if (roleVo.getMenuIds() == null || roleVo.getMenuIds().isEmpty()) {
            return Result.error("权限为空");
        }
        if (roleVo.getMarket() == null || roleVo.getMarket().isEmpty()) {
            return Result.error("所属市场为空");
        }

        if (roleVo.getFatherId() == null || roleVo.getFatherId() != 2) {
            for (Integer menuId : roleVo.getMenuIds()) {
                if (menuId == 11) {
                    return Result.error("上级角色非管理员用户不能赋予权限管理");
                }
            }
        }


        try {

            roleMapper.addRole(roleVo);
            Role role = roleMapper.selectByRoleName(roleVo.getRoleName());
            if (role == null) {
                return Result.error("角色添加失败");
            } else {
                roleVo.setId(role.getId());
            }
            menuService.addPermission(roleVo);
        } catch (Exception e) {
            return Result.error("添加失败");
        }

        return Result.success("创建成功");
    }

    //新增角色
    @Override
    @Transactional
    public Result addRole2(RoleVo roleVo) {
        //校验角色
        // 对角色名进行去空格处理后判断是否为空
        if (roleVo.getRoleName() == null || roleVo.getRoleName().trim().isEmpty()) {
            return Result.error("角色名为空");
        }
        // 新增校验：角色名长度需在 2 - 20 之间
        if (roleVo.getRoleName().length() < 2 || roleVo.getRoleName().length() > 20) {
            return Result.error("角色名长度需在2-20个字符之间");
        }
        if (roleMapper.selectByRoleName(roleVo.getRoleName()) != null) {
            return Result.error("角色名重复");
        }

        if (roleVo.getMenuIds() == null || roleVo.getMenuIds().isEmpty()) {
            return Result.error("权限为空");
        } else {
            List<Integer> menuIds = new ArrayList<>(roleVo.getMenuIds()); // 创建副本避免修改原始列表
            Set<Integer> processedIds = new HashSet<>(menuIds); // 使用Set快速检查存在性

            // 处理每个菜单ID及其所有父菜单
            for (int i = 0; i < menuIds.size(); i++) {
                Integer currentId = menuIds.get(i);

                // ID为1不处理
                if (currentId == 1) continue;

                // 获取父菜单ID
                Integer fatherId = menuMapper.selectFatherId(currentId);

                // 递归添加所有父菜单
                while (fatherId != null) {
                    if (!processedIds.contains(fatherId)) {
                        menuIds.add(fatherId);
                        processedIds.add(fatherId);
                    }
                    // 继续向上查找父菜单的父菜单
                    fatherId = menuMapper.selectFatherId(fatherId);
                }
            }
            roleVo.setMenuIds(menuIds);
        }

        if (roleVo.getMarket() == null || roleVo.getMarket().isEmpty()) {
            return Result.error("所属市场为空");
        }
        if (roleVo.getFatherId() != null) {
            if (roleVo.getFatherId() != 2) {
                for (Integer menuId : roleVo.getMenuIds()) {
                    if (menuId == 11) {
                        return Result.error("上级角色非管理员用户不能赋予权限管理");
                    }
                }
            }
        }

        try {

            roleMapper.addRole(roleVo);
            Role role = roleMapper.selectByRoleName(roleVo.getRoleName());
            if (role == null) {
                return Result.error("角色添加失败");
            } else {
                roleVo.setId(role.getId());
            }
            menuService.addPermission(roleVo);
            System.out.println(roleVo.getMenuIds());
        } catch (Exception e) {
            return Result.error("添加失败");
        }

        return Result.success("创建成功");
    }

    //删除角色
    @Override
    @Transactional
    public Result deleteRole(RoleVo roleVo) {
        if (roleVo.getId() == null) {
            return Result.error("角色id为空");
        }
        if (roleVo.getId() == 2) {
            return Result.error("管理员不允许删除");
        }
        if (roleVo.getId() == 1) {
            return Result.error("无用户不允许删除");
        }
        try {
            roleMapper.deleteRoleMenu(roleVo);
            roleMapper.deleteRole(roleVo);
        } catch (Exception e) {
            e.printStackTrace();
            return Result.error("删除失败");
        }
        return Result.success("删除成功");
    }

    @Override
    public RoleVo selectFather(Integer id) {

        return roleMapper.selectFather(id);
    }

    //查找全部角色
    @Override
    public Result selectAllRole() {
        try {
            //解token权限
            HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
            String token = request.getHeader("token");
            Admin admin = (Admin) JWTUtil.getUserDetailsList(String.valueOf(token), Admin.class);
            if (admin == null) {
                return Result.error("当前用户未登录");
            }
            List<String> list = Arrays.asList(admin.getMarkets().split(","));
            List<RoleVo> listRole = roleMapper.selectAllRole(list);
            return Result.success(listRole);
        } catch (Exception e) {
            return Result.error("查找失败");
        }


    }

    @Override
    public List<RoleVo> selectSubRole(Integer id) {
        return roleMapper.selectByFatherId(id);
    }

    //分页查找角色
    @Override
    public PageInfo<RoleVo> selectBy(Integer pageNum, Integer pageSize, RoleVo roleVo) {
        PageHelper.startPage(pageNum, pageSize);
        List<RoleVo> roleVos = roleMapper.selectBy(roleVo);
        // 遍历 roleVos 列表
        for (RoleVo role : roleVos) {
            // 获取每个角色的权限树
            List<MenuVo> permissionTree = menuService.getPermissionTree(role.getId());
            // 将权限树设置到角色对象中
            role.setTree(permissionTree);
        }
        return new PageInfo<>(roleVos);
    }
}