package logic

import (
	"fmt"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"fusenapi/utils/ldap_lib"
	"github.com/go-ldap/ldap/v3"
	"strconv"
	"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, userinfo *auth.UserInfo) (resp *basic.Response) {
	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
	ldapServer := ldap_lib.NewLdap(l.svcCtx.Ldap, l.svcCtx.Config.Ldap.BaseDN, l.svcCtx.Config.Ldap.RootDN, l.svcCtx.Config.Ldap.PeopleGroupDN)
	//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 := ldapServer.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
	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)
			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
	result, err = ldapServer.Search(l.svcCtx.Config.Ldap.PeopleGroupDN, ldap.ScopeWholeSubtree, filter, nil, nil)
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "查询ldap帐号信息失败,"+err.Error())
	}
	userList := make([]types.GetLdapOrganizationMembersItem, 0, memberCount)
	for _, entry := range result.Entries {
		user := types.GetLdapOrganizationMembersItem{
			UserDN: entry.DN,
		}
		canAppend := true
		for _, attr := range entry.Attributes {
			switch attr.Name {
			case "uidNumber": //用户id
				if len(attr.Values) == 0 {
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户id不存在")
				}
				user.UserId, err = strconv.ParseInt(attr.Values[0], 10, 64)
				if err != nil {
					logx.Error(err)
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户id转数字失败")
				}
			case "sn": //用户真名
				user.UserName = strings.Join(attr.Values, "")
			case "mail": //邮箱
				user.Email = strings.Join(attr.Values, "")
			case "mobile": //手机号
				user.Mobile = strings.Join(attr.Values, "")
			case "postalAddress": //头像
				user.Avatar = strings.Join(attr.Values, "")
			case "employeeType": //人员类型
				if len(attr.Values) == 0 {
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户类型不存在")
				}
				user.EmployeeType, err = strconv.ParseInt(attr.Values[0], 10, 64)
				if err != nil {
					logx.Error(err)
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户类型转数字失败")
				}
			case "postalCode": //状态
				if len(attr.Values) == 0 {
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户状态不存在")
				}
				user.Status, err = strconv.ParseInt(attr.Values[0], 10, 64)
				if err != nil {
					logx.Error(err)
					return resp.SetStatusWithMessage(basic.CodeServiceErr, "用户状态转数字失败")
				}
				//无效员工就不要显示了
				if user.Status != 1 {
					//从该组中移除该成员
					if err = ldapServer.RemoveUserFromOrganization(req.OrganizationDN, entry.DN); err != nil {
						logx.Error("移除组中离职成员失败,", err.Error())
					}
					canAppend = false //要移除的成员就不要显示了
					break
				}
			}
		}
		//添加列表
		if canAppend {
			userList = append(userList, user)
		}
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "success", types.GetLdapOrganizationMembersRsp{
		List: userList,
	})
}

// 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)
// }