package logic

import (
	"fmt"
	"fusenapi/utils/basic"
	"github.com/go-ldap/ldap/v3"
	"net/http"
	"strings"

	"context"

	"fusenapi/server/ldap-admin/internal/svc"
	"fusenapi/server/ldap-admin/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetLdapOrganizationMembersLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetLdapOrganizationMembersLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetLdapOrganizationMembersLogic {
	return &GetLdapOrganizationMembersLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

// 处理进入前逻辑w,r
// func (l *GetLdapOrganizationMembersLogic) BeforeLogic(w http.ResponseWriter, r *http.Request) {
// }

func (l *GetLdapOrganizationMembersLogic) GetLdapOrganizationMembers(req *types.GetLdapOrganizationMembersReq, r *http.Request) (resp *basic.Response) {

	if !l.svcCtx.Ldap.VerifyAuthority(r) {
		return resp.SetStatusWithMessage(basic.CodeUnAuth, "无权限，请联系管理员开通")
	}
	req.OrganizationDN = strings.Trim(req.OrganizationDN, " ")
	if len(req.OrganizationDN) <= 3 || req.OrganizationDN[:3] != "ou=" {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "参数错误,无效的组织DN")
	}
	//先获取组织成员
	//获取跟用户dn筛选排除该用户
	rootDNSlice := strings.Split(l.svcCtx.Config.Ldap.RootDN, ",")
	if len(rootDNSlice) == 0 {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "根用户DN未设置")
	}
	rootCn := rootDNSlice[0]
	filter := "(&(objectClass=groupOfUniqueNames)(!(" + rootCn + ")))"
	fields := []string{"uniqueMember"} //只是查询成员
	result, err := l.svcCtx.Ldap.Search(req.OrganizationDN, ldap.ScopeWholeSubtree, filter, fields, nil)
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "查询ldap组织成员错误,"+err.Error())
	}
	//遍历成员提取cn用于从用户基础组中获取用户信息列表
	filterBuilder := strings.Builder{}
	memberCount := 0
	memberDNList := make([]string, 0, 100)
	for _, entry := range result.Entries {
		if entry.DN != req.OrganizationDN {
			continue
		}
		//查到用户信息了
		for _, attr := range entry.Attributes {
			if attr.Name != "uniqueMember" {
				continue
			}
			memberCount = len(attr.Values)
			memberDNList = attr.Values
			for _, memberDn := range attr.Values {
				//不需要根用户
				if memberDn == l.svcCtx.Config.Ldap.RootDN {
					continue
				}
				//解析dn成每个小的单元
				cellList := strings.Split(memberDn, ",") //取cn邮箱
				filterBuilder.WriteString(fmt.Sprintf("(%s)", cellList[0]))
			}
			break
		}
		break
	}
	//从新赋值filter
	filter = "(&(objectClass=posixAccount)(objectClass=inetOrgPerson)(|" + filterBuilder.String() + "))"
	//从用户基本组中找到员工
	userList, err := l.svcCtx.Ldap.GetLdapBaseTeamUsersByParams(filter)
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "查询ldap帐号信息失败,"+err.Error())
	}
	list := make([]types.GetLdapOrganizationMembersItem, 0, memberCount)
	mapUser := make(map[string]struct{})
	for _, user := range userList {
		if user.Status != 1 {
			//从部门member中移出
			if err = l.svcCtx.Ldap.RemoveUserFromOrganization(req.OrganizationDN, user.UserDN); err != nil {
				logx.Error("移除用户成员失败:", err)
			}
			continue
		}
		mapUser[user.UserDN] = struct{}{}
		list = append(list, types.GetLdapOrganizationMembersItem{
			UserId:       user.UserId,
			UserDN:       user.UserDN,
			UserName:     user.UserName,
			Email:        user.Email,
			Mobile:       user.Mobile,
			Avatar:       user.Avatar,
			EmployeeType: user.EmployeeType,
			Status:       user.Status,
		})
	}
	//把通讯录中没有的也删除
	for _, memberDN := range memberDNList {
		if _, ok := mapUser[memberDN]; ok {
			continue
		}
		//从组织中移除没有帐号的用户
		if err = l.svcCtx.Ldap.RemoveUserFromOrganization(req.OrganizationDN, memberDN); err != nil {
			logx.Error("移除用户成员失败!:", err)
		}
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "success", types.GetLdapOrganizationMembersRsp{
		List: list,
	})
}

// 处理逻辑后 w,r 如:重定向, resp 必须重新处理
// func (l *GetLdapOrganizationMembersLogic) AfterLogic(w http.ResponseWriter, r *http.Request, resp *basic.Response) {
// // httpx.OkJsonCtx(r.Context(), w, resp)
// }