feat: implement DeleteConversations interface. (#3549)

* feat: implement DeleteConversations interface.

* remove unused comment.

* update logic and rename method.

internal/api/conversation.go

@@ -76,3 +76,7 @@ func (o *ConversationApi) GetPinnedConversationIDs(c *gin.Context) {
 func (o *ConversationApi) UpdateConversationsByUser(c *gin.Context) {
 	a2r.Call(c, conversation.ConversationClient.UpdateConversationsByUser, o.Client)
 }
+
+func (o *ConversationApi) DeleteConversations(c *gin.Context) {
+	a2r.Call(c, conversation.ConversationClient.DeleteConversations, o.Client)
+}

internal/api/router.go

@@ -277,6 +277,7 @@ func newGinRouter(ctx context.Context, client discovery.SvcDiscoveryRegistry, cf
 		conversationGroup.POST("/get_owner_conversation", c.GetOwnerConversation)
 		conversationGroup.POST("/get_not_notify_conversation_ids", c.GetNotNotifyConversationIDs)
 		conversationGroup.POST("/get_pinned_conversation_ids", c.GetPinnedConversationIDs)
+		conversationGroup.POST("/delete_conversations", c.DeleteConversations)
 	}
 
 	{

internal/msgtransfer/online_history_msg_handler.go

@@ -18,6 +18,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+
 	"github.com/openimsdk/tools/mq"
 
 	"sync"

internal/rpc/conversation/conversation.go

@@ -37,6 +37,7 @@ import (
 	"github.com/openimsdk/open-im-server/v3/pkg/msgprocessor"
 	"github.com/openimsdk/protocol/constant"
 	pbconversation "github.com/openimsdk/protocol/conversation"
+	"github.com/openimsdk/protocol/msg"
 	"github.com/openimsdk/protocol/sdkws"
 	"github.com/openimsdk/tools/discovery"
 	"github.com/openimsdk/tools/errs"
@@ -795,7 +796,7 @@ func (c *conversationServer) ClearUserConversationMsg(ctx context.Context, req *
 	}
 	latestMsgDestructTime := time.UnixMilli(req.Timestamp)
 	for i, conversation := range conversations {
-		if conversation.IsMsgDestruct == false || conversation.MsgDestructTime == 0 {
+		if !conversation.IsMsgDestruct || conversation.MsgDestructTime == 0 {
 			continue
 		}
 		seq, err := c.msgClient.GetLastMessageSeqByTime(ctx, conversation.ConversationID, req.Timestamp-(conversation.MsgDestructTime*1000))
@@ -835,3 +836,53 @@ func (c *conversationServer) setConversationMinSeqAndLatestMsgDestructTime(ctx c
 	c.conversationNotificationSender.ConversationChangeNotification(ctx, ownerUserID, []string{conversationID})
 	return nil
 }
+
+func (c *conversationServer) DeleteConversations(ctx context.Context, req *pbconversation.DeleteConversationsReq) (resp *pbconversation.DeleteConversationsResp, err error) {
+	if err := authverify.CheckAccess(ctx, req.OwnerUserID); err != nil {
+		return nil, err
+	}
+	if req.NeedDeleteTime == 0 && len(req.ConversationIDs) == 0 {
+		return nil, errs.ErrArgs.WrapMsg("need_delete_time or conversationIDs need be set")
+	}
+
+	if req.NeedDeleteTime != 0 && len(req.ConversationIDs) != 0 {
+		return nil, errs.ErrArgs.WrapMsg("need_delete_time and conversationIDs cannot both be set")
+	}
+
+	var needDeleteConversationIDs []string
+
+	if len(req.ConversationIDs) == 0 {
+		deleteTimeThreshold := time.Now().AddDate(0, 0, -int(req.NeedDeleteTime)).UnixMilli()
+		conversationIDs, err := c.conversationDatabase.GetConversationIDs(ctx, req.OwnerUserID)
+		if err != nil {
+			return nil, err
+		}
+		latestMsgs, err := c.msgClient.GetLastMessage(ctx, &msg.GetLastMessageReq{
+			UserID:          req.OwnerUserID,
+			ConversationIDs: conversationIDs,
+		})
+		if err != nil {
+			return nil, err
+		}
+
+		for conversationID, msg := range latestMsgs.Msgs {
+			if msg.SendTime < deleteTimeThreshold {
+				needDeleteConversationIDs = append(needDeleteConversationIDs, conversationID)
+			}
+		}
+
+		if len(needDeleteConversationIDs) == 0 {
+			return &pbconversation.DeleteConversationsResp{}, nil
+		}
+	} else {
+		needDeleteConversationIDs = req.ConversationIDs
+	}
+
+	if err := c.conversationDatabase.DeleteUsersConversations(ctx, req.OwnerUserID, needDeleteConversationIDs); err != nil {
+		return nil, err
+	}
+
+	// c.conversationNotificationSender.ConversationDeleteNotification(ctx, req.OwnerUserID, needDeleteConversationIDs)
+
+	return &pbconversation.DeleteConversationsResp{}, nil
+}

internal/rpc/conversation/notification.go

@@ -73,3 +73,12 @@ func (c *ConversationNotificationSender) ConversationUnreadChangeNotification(
 
 	c.Notification(ctx, userID, userID, constant.ConversationUnreadNotification, tips)
 }
+
+func (c *ConversationNotificationSender) ConversationDeleteNotification(ctx context.Context, userID string, conversationIDs []string) {
+	tips := &sdkws.ConversationDeleteTips{
+		UserID:          userID,
+		ConversationIDs: conversationIDs,
+	}
+
+	c.Notification(ctx, userID, userID, constant.ConversationDeleteNotification, tips)
+}