聊天：最近私聊历史相关逻辑

shared/consts/constModules/chatConst.ts

@@ -1,4 +1,6 @@
 export const MSG_CODE_LEN = 8;
+export const RECENT_PRIVATE_CHATS_CNT = 20;
+export const MAX_PRIVATE_MSGS = 99;
 
 export const MSG_STATUS = {
     NORMAL: 0,

shared/db/ChatInfo.ts

@@ -1,6 +1,12 @@
 import BaseModel from './BaseModel';
 import { index, getModelForClass, prop, DocumentType, modelOptions } from '@typegoose/typegoose';
 
+class PrivateChatRec {
+  targetRoleId: string; // 聊天玩家 roleId
+  lastReadTime: Date; // 最后查看时间，用来检查未读消息数
+  lastChatTime: Date; // 最后聊天时间
+}
+
 /**
   * 记录聊天信息，包含配置、最近聊天等
 **/
@@ -20,15 +26,24 @@ export default class ChatInfo extends BaseModel {
   BSSources: [string]; // 弹幕打开的消息来源
   @prop({ required: true, default: '' })
   bubbleId: string; // 气泡编号
-  @prop({ required: true, type: String, default: [] })
-  recentPrivateChats: [{ // 最近聊天列表
-    targetRoleId: string; // 聊天玩家 roleId
-    roomId: string; // 聊天 Id
-    lastReadTime: Date; // 最后查看时间
-  }];
+  @prop({ required: true, type: PrivateChatRec, default: [] })
+  recentPrivateChats: [PrivateChatRec]; // 最近聊天列表
+
+  public static async createInfo(data: ChatInfoParam) {
+    const roleId = data.roleId!;
+    const docData = new ChatInfoModel();
+    const result = await ChatInfoModel.findOneAndUpdate({ roleId }, { ...docData.toJSON(), ...data }, { upsert: true, new: true }).select('-_id').lean();
+    return result;
+  }
+
+  public static async findInfo(roleId: string) {
+    let result = await ChatInfoModel.findOne({ roleId }).select('-_id').lean();
+    return result;
+  }
 }
 
 
 export const ChatInfoModel = getModelForClass(ChatInfo);
 
 export interface ChatInfoType extends Pick<DocumentType<ChatInfo>, keyof ChatInfo> {};
+export type ChatInfoParam = Partial<ChatInfoType>;

shared/db/PrivateMessage.ts

@@ -51,6 +51,16 @@ export default class PrivateMessage extends BaseModel {
       const result = await PrivateMessageModel.find({ roomId, seqId: { $lt: fromSeqId } }).sort({ seqId: -1 }).limit(count).lean();
       return result;
     }
+
+    public static async getMsgsByTime(roomId: string, time: Date, count: number) {
+      const result = await PrivateMessageModel.find({ roomId, createdAt: { $gt: time } }).sort({ seqId: -1 }).limit(count).lean();
+      return result;
+    }
+
+    public static async getMsgByRooms(roomIds: string[], count: number) {
+      const result = await PrivateMessageModel.find({ roomId: { $in: roomIds } }).sort({ seqId: -1 }).limit(count).lean();
+      return result;
+    }
 }