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			360 lines
		
	
	
		
			16 KiB
		
	
	
	
		
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// Copyright © 2023 OpenIM. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//     http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package controller
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import (
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	"context"
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	"fmt"
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	"github.com/openimsdk/open-im-server/v3/pkg/common/db/dataver"
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	"time"
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	"github.com/openimsdk/open-im-server/v3/pkg/common/db/cache"
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	"github.com/openimsdk/open-im-server/v3/pkg/common/db/table/relation"
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	"github.com/openimsdk/protocol/constant"
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	"github.com/openimsdk/tools/db/pagination"
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	"github.com/openimsdk/tools/db/tx"
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	"github.com/openimsdk/tools/errs"
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	"github.com/openimsdk/tools/log"
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	"github.com/openimsdk/tools/mcontext"
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	"github.com/openimsdk/tools/utils/datautil"
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)
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type FriendDatabase interface {
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	// CheckIn checks if user2 is in user1's friend list (inUser1Friends==true) and if user1 is in user2's friend list (inUser2Friends==true)
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	CheckIn(ctx context.Context, user1, user2 string) (inUser1Friends bool, inUser2Friends bool, err error)
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	// AddFriendRequest adds or updates a friend request
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	AddFriendRequest(ctx context.Context, fromUserID, toUserID string, reqMsg string, ex string) (err error)
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	// BecomeFriends first checks if the users are already in the friends table; if not, it inserts them as friends
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	BecomeFriends(ctx context.Context, ownerUserID string, friendUserIDs []string, addSource int32) (err error)
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	// RefuseFriendRequest refuses a friend request
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	RefuseFriendRequest(ctx context.Context, friendRequest *relation.FriendRequestModel) (err error)
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	// AgreeFriendRequest accepts a friend request
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	AgreeFriendRequest(ctx context.Context, friendRequest *relation.FriendRequestModel) (err error)
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	// Delete removes a friend or friends from the owner's friend list
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	Delete(ctx context.Context, ownerUserID string, friendUserIDs []string) (err error)
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	// UpdateRemark updates the remark for a friend
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	UpdateRemark(ctx context.Context, ownerUserID, friendUserID, remark string) (err error)
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	// PageOwnerFriends retrieves the friend list of ownerUserID with pagination
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	PageOwnerFriends(ctx context.Context, ownerUserID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendModel, err error)
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	// PageInWhoseFriends finds the users who have friendUserID in their friend list with pagination
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	PageInWhoseFriends(ctx context.Context, friendUserID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendModel, err error)
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	// PageFriendRequestFromMe retrieves the friend requests sent by the user with pagination
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	PageFriendRequestFromMe(ctx context.Context, userID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendRequestModel, err error)
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	// PageFriendRequestToMe retrieves the friend requests received by the user with pagination
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	PageFriendRequestToMe(ctx context.Context, userID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendRequestModel, err error)
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	// FindFriendsWithError fetches specified friends of a user and returns an error if any do not exist
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	FindFriendsWithError(ctx context.Context, ownerUserID string, friendUserIDs []string) (friends []*relation.FriendModel, err error)
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	// FindFriendUserIDs retrieves the friend IDs of a user
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	FindFriendUserIDs(ctx context.Context, ownerUserID string) (friendUserIDs []string, err error)
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	// FindBothFriendRequests finds friend requests sent and received
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	FindBothFriendRequests(ctx context.Context, fromUserID, toUserID string) (friends []*relation.FriendRequestModel, err error)
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	// UpdateFriends updates fields for friends
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	UpdateFriends(ctx context.Context, ownerUserID string, friendUserIDs []string, val map[string]any) (err error)
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	FindSortFriendUserIDs(ctx context.Context, ownerUserID string) ([]string, error)
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	FindFriendIncrVersion(ctx context.Context, ownerUserID string, version uint, limit int) (*dataver.WriteLog, error)
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}
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type friendDatabase struct {
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	friend        relation.FriendModelInterface
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	friendRequest relation.FriendRequestModelInterface
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	tx            tx.Tx
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	cache         cache.FriendCache
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}
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func NewFriendDatabase(friend relation.FriendModelInterface, friendRequest relation.FriendRequestModelInterface, cache cache.FriendCache, tx tx.Tx) FriendDatabase {
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	return &friendDatabase{friend: friend, friendRequest: friendRequest, cache: cache, tx: tx}
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}
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// CheckIn verifies if user2 is in user1's friend list (inUser1Friends returns true) and
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// if user1 is in user2's friend list (inUser2Friends returns true).
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func (f *friendDatabase) CheckIn(ctx context.Context, userID1, userID2 string) (inUser1Friends bool, inUser2Friends bool, err error) {
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	// Retrieve friend IDs of userID1 from the cache
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	userID1FriendIDs, err := f.cache.GetFriendIDs(ctx, userID1)
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	if err != nil {
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		err = fmt.Errorf("error retrieving friend IDs for user %s: %w", userID1, err)
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		return
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	}
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	// Retrieve friend IDs of userID2 from the cache
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	userID2FriendIDs, err := f.cache.GetFriendIDs(ctx, userID2)
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	if err != nil {
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		err = fmt.Errorf("error retrieving friend IDs for user %s: %w", userID2, err)
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		return
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	}
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	// Check if userID2 is in userID1's friend list and vice versa
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	inUser1Friends = datautil.Contain(userID2, userID1FriendIDs...)
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	inUser2Friends = datautil.Contain(userID1, userID2FriendIDs...)
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	return inUser1Friends, inUser2Friends, nil
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}
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// AddFriendRequest adds or updates a friend request.
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func (f *friendDatabase) AddFriendRequest(ctx context.Context, fromUserID, toUserID string, reqMsg string, ex string) (err error) {
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	return f.tx.Transaction(ctx, func(ctx context.Context) error {
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		_, err := f.friendRequest.Take(ctx, fromUserID, toUserID)
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		switch {
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		case err == nil:
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			m := make(map[string]any, 1)
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			m["handle_result"] = 0
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			m["handle_msg"] = ""
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			m["req_msg"] = reqMsg
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			m["ex"] = ex
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			m["create_time"] = time.Now()
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			return f.friendRequest.UpdateByMap(ctx, fromUserID, toUserID, m)
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		case relation.IsNotFound(err):
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			return f.friendRequest.Create(
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				ctx,
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				[]*relation.FriendRequestModel{{FromUserID: fromUserID, ToUserID: toUserID, ReqMsg: reqMsg, Ex: ex, CreateTime: time.Now(), HandleTime: time.Unix(0, 0)}},
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			)
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		default:
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			return err
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		}
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	})
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}
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// (1) First determine whether it is in the friends list (in or out does not return an error) (2) for not in the friends list can be inserted.
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func (f *friendDatabase) BecomeFriends(ctx context.Context, ownerUserID string, friendUserIDs []string, addSource int32) (err error) {
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	return f.tx.Transaction(ctx, func(ctx context.Context) error {
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		cache := f.cache.NewCache()
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		// user find friends
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		fs1, err := f.friend.FindFriends(ctx, ownerUserID, friendUserIDs)
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		if err != nil {
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			return err
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		}
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		opUserID := mcontext.GetOperationID(ctx)
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		for _, v := range friendUserIDs {
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			fs1 = append(fs1, &relation.FriendModel{OwnerUserID: ownerUserID, FriendUserID: v, AddSource: addSource, OperatorUserID: opUserID})
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		}
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		fs11 := datautil.DistinctAny(fs1, func(e *relation.FriendModel) string {
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			return e.FriendUserID
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		})
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		err = f.friend.Create(ctx, fs11)
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		if err != nil {
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			return err
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		}
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		fs2, err := f.friend.FindReversalFriends(ctx, ownerUserID, friendUserIDs)
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		if err != nil {
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			return err
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		}
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		var newFriendIDs []string
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		for _, v := range friendUserIDs {
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			fs2 = append(fs2, &relation.FriendModel{OwnerUserID: v, FriendUserID: ownerUserID, AddSource: addSource, OperatorUserID: opUserID})
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			newFriendIDs = append(newFriendIDs, v)
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		}
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		fs22 := datautil.DistinctAny(fs2, func(e *relation.FriendModel) string {
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			return e.OwnerUserID
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		})
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		err = f.friend.Create(ctx, fs22)
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		if err != nil {
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			return err
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		}
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		newFriendIDs = append(newFriendIDs, ownerUserID)
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		cache = cache.DelFriendIDs(newFriendIDs...).DelSortFriendUserIDs(ownerUserID)
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		return cache.ExecDel(ctx)
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	})
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}
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// RefuseFriendRequest rejects a friend request. It first checks for an existing, unprocessed request.
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// If no such request exists, it returns an error. Otherwise, it marks the request as refused.
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func (f *friendDatabase) RefuseFriendRequest(ctx context.Context, friendRequest *relation.FriendRequestModel) error {
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	// Attempt to retrieve the friend request from the database.
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	fr, err := f.friendRequest.Take(ctx, friendRequest.FromUserID, friendRequest.ToUserID)
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	if err != nil {
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		return fmt.Errorf("failed to retrieve friend request from %s to %s: %w", friendRequest.FromUserID, friendRequest.ToUserID, err)
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	}
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	// Check if the friend request has already been handled.
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	if fr.HandleResult != 0 {
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		return fmt.Errorf("friend request from %s to %s has already been processed", friendRequest.FromUserID, friendRequest.ToUserID)
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	}
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	// Log the action of refusing the friend request for debugging and auditing purposes.
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	log.ZDebug(ctx, "Refusing friend request", map[string]interface{}{
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		"DB_FriendRequest":  fr,
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		"Arg_FriendRequest": friendRequest,
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	})
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	// Mark the friend request as refused and update the handle time.
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	friendRequest.HandleResult = constant.FriendResponseRefuse
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	friendRequest.HandleTime = time.Now()
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	if err := f.friendRequest.Update(ctx, friendRequest); err != nil {
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		return fmt.Errorf("failed to update friend request from %s to %s as refused: %w", friendRequest.FromUserID, friendRequest.ToUserID, err)
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	}
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	return nil
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}
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// AgreeFriendRequest accepts a friend request. It first checks for an existing, unprocessed request.
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func (f *friendDatabase) AgreeFriendRequest(ctx context.Context, friendRequest *relation.FriendRequestModel) (err error) {
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	return f.tx.Transaction(ctx, func(ctx context.Context) error {
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		now := time.Now()
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		fr, err := f.friendRequest.Take(ctx, friendRequest.FromUserID, friendRequest.ToUserID)
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		if err != nil {
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			return err
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		}
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		if fr.HandleResult != 0 {
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			return errs.ErrArgs.WrapMsg("the friend request has been processed")
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		}
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		friendRequest.HandlerUserID = mcontext.GetOpUserID(ctx)
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		friendRequest.HandleResult = constant.FriendResponseAgree
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		friendRequest.HandleTime = now
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		err = f.friendRequest.Update(ctx, friendRequest)
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		if err != nil {
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			return err
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		}
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		fr2, err := f.friendRequest.Take(ctx, friendRequest.ToUserID, friendRequest.FromUserID)
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		if err == nil && fr2.HandleResult == constant.FriendResponseNotHandle {
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			fr2.HandlerUserID = mcontext.GetOpUserID(ctx)
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			fr2.HandleResult = constant.FriendResponseAgree
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			fr2.HandleTime = now
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			err = f.friendRequest.Update(ctx, fr2)
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			if err != nil {
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				return err
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			}
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		} else if err != nil && (!relation.IsNotFound(err)) {
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			return err
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		}
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		exists, err := f.friend.FindUserState(ctx, friendRequest.FromUserID, friendRequest.ToUserID)
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		if err != nil {
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			return err
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		}
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		existsMap := datautil.SliceSet(datautil.Slice(exists, func(friend *relation.FriendModel) [2]string {
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			return [...]string{friend.OwnerUserID, friend.FriendUserID} // My - Friend
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		}))
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		var adds []*relation.FriendModel
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		if _, ok := existsMap[[...]string{friendRequest.ToUserID, friendRequest.FromUserID}]; !ok { // My - Friend
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			adds = append(
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				adds,
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				&relation.FriendModel{
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					OwnerUserID:    friendRequest.ToUserID,
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					FriendUserID:   friendRequest.FromUserID,
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					AddSource:      int32(constant.BecomeFriendByApply),
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					OperatorUserID: friendRequest.FromUserID,
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				},
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			)
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		}
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		if _, ok := existsMap[[...]string{friendRequest.FromUserID, friendRequest.ToUserID}]; !ok { // My - Friend
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			adds = append(
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				adds,
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				&relation.FriendModel{
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					OwnerUserID:    friendRequest.FromUserID,
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					FriendUserID:   friendRequest.ToUserID,
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					AddSource:      int32(constant.BecomeFriendByApply),
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					OperatorUserID: friendRequest.FromUserID,
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				},
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			)
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		}
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		if len(adds) > 0 {
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			if err := f.friend.Create(ctx, adds); err != nil {
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				return err
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			}
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		}
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		return f.cache.DelFriendIDs(friendRequest.ToUserID, friendRequest.FromUserID).DelSortFriendUserIDs(friendRequest.ToUserID, friendRequest.FromUserID).ExecDel(ctx)
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	})
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}
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// Delete removes a friend relationship. It is assumed that the external caller has verified the friendship status.
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func (f *friendDatabase) Delete(ctx context.Context, ownerUserID string, friendUserIDs []string) (err error) {
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	if err := f.friend.Delete(ctx, ownerUserID, friendUserIDs); err != nil {
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		return err
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	}
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	return f.cache.DelFriendIDs(append(friendUserIDs, ownerUserID)...).DelSortFriendUserIDs(ownerUserID).ExecDel(ctx)
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}
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// UpdateRemark updates the remark for a friend. Zero value for remark is also supported.
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func (f *friendDatabase) UpdateRemark(ctx context.Context, ownerUserID, friendUserID, remark string) (err error) {
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	if err := f.friend.UpdateRemark(ctx, ownerUserID, friendUserID, remark); err != nil {
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		return err
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	}
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	return f.cache.DelFriend(ownerUserID, friendUserID).ExecDel(ctx)
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}
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// PageOwnerFriends retrieves the list of friends for the ownerUserID. It does not return an error if the result is empty.
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func (f *friendDatabase) PageOwnerFriends(ctx context.Context, ownerUserID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendModel, err error) {
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	return f.friend.FindOwnerFriends(ctx, ownerUserID, pagination)
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}
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// PageInWhoseFriends identifies in whose friend lists the friendUserID appears.
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func (f *friendDatabase) PageInWhoseFriends(ctx context.Context, friendUserID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendModel, err error) {
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	return f.friend.FindInWhoseFriends(ctx, friendUserID, pagination)
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}
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// PageFriendRequestFromMe retrieves friend requests sent by me. It does not return an error if the result is empty.
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func (f *friendDatabase) PageFriendRequestFromMe(ctx context.Context, userID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendRequestModel, err error) {
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	return f.friendRequest.FindFromUserID(ctx, userID, pagination)
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}
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// PageFriendRequestToMe retrieves friend requests received by me. It does not return an error if the result is empty.
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func (f *friendDatabase) PageFriendRequestToMe(ctx context.Context, userID string, pagination pagination.Pagination) (total int64, friends []*relation.FriendRequestModel, err error) {
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	return f.friendRequest.FindToUserID(ctx, userID, pagination)
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}
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						|
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// FindFriendsWithError retrieves specified friends' information for ownerUserID. Returns an error if any friend does not exist.
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func (f *friendDatabase) FindFriendsWithError(ctx context.Context, ownerUserID string, friendUserIDs []string) (friends []*relation.FriendModel, err error) {
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	friends, err = f.friend.FindFriends(ctx, ownerUserID, friendUserIDs)
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						|
	if err != nil {
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						|
		return
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						|
	}
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						|
	if len(friends) != len(friendUserIDs) {
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						|
		err = errs.ErrRecordNotFound.Wrap()
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						|
	}
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						|
	return
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}
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func (f *friendDatabase) FindFriendUserIDs(ctx context.Context, ownerUserID string) (friendUserIDs []string, err error) {
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	return f.cache.GetFriendIDs(ctx, ownerUserID)
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}
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func (f *friendDatabase) FindBothFriendRequests(ctx context.Context, fromUserID, toUserID string) (friends []*relation.FriendRequestModel, err error) {
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	return f.friendRequest.FindBothFriendRequests(ctx, fromUserID, toUserID)
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						|
}
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func (f *friendDatabase) UpdateFriends(ctx context.Context, ownerUserID string, friendUserIDs []string, val map[string]any) (err error) {
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						|
	if len(val) == 0 {
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		return nil
 | 
						|
	}
 | 
						|
	if err := f.friend.UpdateFriends(ctx, ownerUserID, friendUserIDs, val); err != nil {
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						|
		return err
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						|
	}
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						|
	return f.cache.DelFriends(ownerUserID, friendUserIDs).DelSortFriendUserIDs(ownerUserID).ExecDel(ctx)
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						|
}
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						|
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func (f *friendDatabase) FindSortFriendUserIDs(ctx context.Context, ownerUserID string) ([]string, error) {
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						|
	return f.cache.FindSortFriendUserIDs(ctx, ownerUserID)
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						|
}
 | 
						|
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						|
func (f *friendDatabase) FindFriendIncrVersion(ctx context.Context, ownerUserID string, version uint, limit int) (*dataver.WriteLog, error) {
 | 
						|
	return f.cache.FindFriendIncrVersion(ctx, ownerUserID, version, limit)
 | 
						|
}
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