复制项目

pkg/notification/grouphash/grouphash.go

@@ -0,0 +1,102 @@
+// Copyright © 2023 OpenIM. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package grouphash
+
+import (
+	"context"
+	"crypto/md5"
+	"encoding/binary"
+	"encoding/json"
+
+	"git.imall.cloud/openim/protocol/group"
+	"git.imall.cloud/openim/protocol/sdkws"
+	"github.com/openimsdk/tools/utils/datautil"
+)
+
+func NewGroupHashFromGroupClient(x group.GroupClient) *GroupHash {
+	return &GroupHash{
+		getGroupAllUserIDs: func(ctx context.Context, groupID string) ([]string, error) {
+			resp, err := x.GetGroupMemberUserIDs(ctx, &group.GetGroupMemberUserIDsReq{GroupID: groupID})
+			if err != nil {
+				return nil, err
+			}
+			return resp.UserIDs, nil
+		},
+		getGroupMemberInfo: func(ctx context.Context, groupID string, userIDs []string) ([]*sdkws.GroupMemberFullInfo, error) {
+			resp, err := x.GetGroupMembersInfo(ctx, &group.GetGroupMembersInfoReq{GroupID: groupID, UserIDs: userIDs})
+			if err != nil {
+				return nil, err
+			}
+			return resp.Members, nil
+		},
+	}
+}
+
+func NewGroupHashFromGroupServer(x group.GroupServer) *GroupHash {
+	return &GroupHash{
+		getGroupAllUserIDs: func(ctx context.Context, groupID string) ([]string, error) {
+			resp, err := x.GetGroupMemberUserIDs(ctx, &group.GetGroupMemberUserIDsReq{GroupID: groupID})
+			if err != nil {
+				return nil, err
+			}
+			return resp.UserIDs, nil
+		},
+		getGroupMemberInfo: func(ctx context.Context, groupID string, userIDs []string) ([]*sdkws.GroupMemberFullInfo, error) {
+			resp, err := x.GetGroupMembersInfo(ctx, &group.GetGroupMembersInfoReq{GroupID: groupID, UserIDs: userIDs})
+			if err != nil {
+				return nil, err
+			}
+			return resp.Members, nil
+		},
+	}
+}
+
+type GroupHash struct {
+	getGroupAllUserIDs func(ctx context.Context, groupID string) ([]string, error)
+	getGroupMemberInfo func(ctx context.Context, groupID string, userIDs []string) ([]*sdkws.GroupMemberFullInfo, error)
+}
+
+func (gh *GroupHash) GetGroupHash(ctx context.Context, groupID string) (uint64, error) {
+	userIDs, err := gh.getGroupAllUserIDs(ctx, groupID)
+	if err != nil {
+		return 0, err
+	}
+	var members []*sdkws.GroupMemberFullInfo
+	if len(userIDs) > 0 {
+		members, err = gh.getGroupMemberInfo(ctx, groupID, userIDs)
+		if err != nil {
+			return 0, err
+		}
+		datautil.Sort(userIDs, true)
+	}
+	memberMap := datautil.SliceToMap(members, func(e *sdkws.GroupMemberFullInfo) string {
+		return e.UserID
+	})
+	res := make([]*sdkws.GroupMemberFullInfo, 0, len(members))
+	for _, userID := range userIDs {
+		member, ok := memberMap[userID]
+		if !ok {
+			continue
+		}
+		member.AppMangerLevel = 0
+		res = append(res, member)
+	}
+	data, err := json.Marshal(res)
+	if err != nil {
+		return 0, err
+	}
+	sum := md5.Sum(data)
+	return binary.BigEndian.Uint64(sum[:]), nil
+}