multi accounts

config.example.yaml

 host: '::'
 port: 3000
-OPENAI_EMAIL: ''
-OPENAI_PASSWORD: ''
-OPENAI_LOGIN_TYPE: 'default'
-REDIS_URL: ''
-OPENAI_PRO: false
-TOKEN: ''
+redisUrl: ''
+token: ''
+accounts:
+  - email: 'test@example.com'
+    password: 'wwww'
+    pro: false
\ No newline at end of file
+    loginType: 'default'
\ No newline at end of file

package-lock.json

@@ -15,9 +15,11 @@
         "@nestjs/platform-express": "^9.0.0",
         "@nestjs/swagger": "^6.2.1",
         "aragami": "^1.1.2",
+        "better-lock": "^2.0.3",
         "chatgpt3": "npm:chatgpt@^3.5.2",
         "class-transformer": "^0.5.1",
         "class-validator": "^0.14.0",
+        "lodash": "^4.17.21",
         "nestjs-aragami": "^1.0.0",
         "reflect-metadata": "^0.1.13",
         "rimraf": "^3.0.2",
@@ -31,6 +33,7 @@
         "@nestjs/testing": "^9.0.0",
         "@types/express": "^4.17.17",
         "@types/jest": "28.1.8",
+        "@types/lodash": "^4.14.191",
         "@types/node": "^16.0.0",
         "@types/supertest": "^2.0.11",
         "@types/uuid": "^9.0.0",
@@ -2093,6 +2096,12 @@
       "integrity": "sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==",
       "dev": true
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
     "node_modules/@types/mdast": {
       "version": "3.0.10",
       "resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-3.0.10.tgz",
@@ -11869,6 +11878,12 @@
       "integrity": "sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==",
       "dev": true
     },
+    "@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
     "@types/mdast": {
       "version": "3.0.10",
       "resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-3.0.10.tgz",

package.json

@@ -27,9 +27,11 @@
     "@nestjs/platform-express": "^9.0.0",
     "@nestjs/swagger": "^6.2.1",
     "aragami": "^1.1.2",
+    "better-lock": "^2.0.3",
     "chatgpt3": "npm:chatgpt@^3.5.2",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.0",
+    "lodash": "^4.17.21",
     "nestjs-aragami": "^1.0.0",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
@@ -43,6 +45,7 @@
     "@nestjs/testing": "^9.0.0",
     "@types/express": "^4.17.17",
     "@types/jest": "28.1.8",
+    "@types/lodash": "^4.14.191",
     "@types/node": "^16.0.0",
     "@types/supertest": "^2.0.11",
     "@types/uuid": "^9.0.0",

src/app.module.ts

@@ -18,7 +18,7 @@ import { AuthService } from './auth/auth.service';
     AragamiModule.registerAsync({
       inject: [ConfigService],
       useFactory: (config: ConfigService) => {
-        const redisUrl = config.get<string>('REDIS_URL');
+        const redisUrl = config.get<string>('redisUrl');
         if (redisUrl) {
           return {
             redis: {

src/auth/auth.service.ts

@@ -7,7 +7,7 @@ export class AuthService {
   constructor(private config: ConfigService) {}
 
   async auth(header: string) {
-    const token = this.config.get<string>('TOKEN');
+    const token = this.config.get<string>('token');
     if (!token) {
       return true;
     }

src/chatgpt/chatgpt.service.ts

@@ -10,6 +10,17 @@ import { TalkDto } from './talk.dto';
 import { ConversationService } from '../conversation/conversation.service';
 import { v4 as uuid } from 'uuid';
 import { ConversationDto } from '../conversation/conversation.dto';
+import { OpenAIAccount } from '../utility/config';
+import { BetterLock } from 'better-lock/dist/better_lock';
+import _ from 'lodash';
+import { BlankReturnMessageDto } from '../dto/ReturnMessage.dto';
+
+interface AccountState {
+  email: string;
+  account: ChatGPTAPIBrowser;
+  lock: BetterLock;
+  occupyTimestamp: number;
+}
 
 @Injectable()
 export class ChatgptService
@@ -24,50 +35,104 @@ export class ChatgptService
   }
 
   private ChatGPTAPIBrowserConstructor: typeof ChatGPTAPIBrowser;
-  private api: ChatGPTAPIBrowser;
+  private accounts = new Map<string, AccountState>();
+
+  private async initAccount(account: OpenAIAccount) {
+    this.log(`Initializing ChatGPT API for ${account.email}`);
+    const instance = new this.ChatGPTAPIBrowserConstructor({
+      email: account.email,
+      password: account.password,
+      isProAccount: !!account.pro,
+      isGoogleLogin: account.loginType === 'google',
+      isMicrosoftLogin: account.loginType === 'microsoft',
+    });
+    try {
+      await instance.initSession();
+      this.log(`Initialized ChatGPT API for ${account.email}`);
+      this.accounts.set(account.email, {
+        email: account.email,
+        account: instance,
+        lock: new BetterLock(),
+        occupyTimestamp: 0,
+      });
+    } catch (e) {
+      this.error(`Failed to initialize ChatGPT API for ${account.email}`, e);
+      return;
+    }
+  }
+
+  randomAccount(exclude: string[] = []) {
+    const accounts = Array.from(this.accounts.values()).filter(
+      (a) => !exclude.includes(a.email),
+    );
+    const freeAccounts = accounts.filter((a) => a.occupyTimestamp === 0);
+    if (freeAccounts.length) {
+      return freeAccounts[Math.floor(Math.random() * freeAccounts.length)];
+    }
+    if (!accounts.length) {
+      return;
+    }
+    return _.minBy(accounts, (a) => a.occupyTimestamp);
+  }
 
   async onModuleInit() {
     this.ChatGPTAPIBrowserConstructor = (
       await eval("import('chatgpt3')")
     ).ChatGPTAPIBrowser;
-    this.api = new this.ChatGPTAPIBrowserConstructor({
-      email: this.config.get('OPENAI_EMAIL'),
-      password: this.config.get('OPENAI_PASSWORD'),
-      isProAccount: !!this.config.get('OPENAI_PRO'),
-      isGoogleLogin: this.config.get('OPENAI_LOGIN_TYPE') === 'google',
-      isMicrosoftLogin: this.config.get('OPENAI_LOGIN_TYPE') === 'microsoft',
-    });
-    this.log('Initializing ChatGPT API');
-    await this.api.initSession();
+    this.config
+      .get<OpenAIAccount[]>('accounts')
+      .forEach((a) => this.initAccount(a));
   }
 
   async onModuleDestroy() {
-    await this.api.closeSession();
-  }
-
-  getAPI() {
-    return this.api;
+    await Promise.all(
+      Array.from(this.accounts.values()).map((a) => a.account.closeSession()),
+    );
   }
 
-  async chat(question: TalkDto) {
+  async chat(question: TalkDto, failedAccounts: string[] = []) {
     const session = question.session || uuid();
-    const previousConversation = await this.conversationService.getConversation(
+    const previousConversation = failedAccounts.length
+      ? undefined
+      : await this.conversationService.getConversation(session);
+    const account =
+      this.accounts.get(previousConversation?.account || '_random') ||
+      this.randomAccount(failedAccounts);
+    if (!account) {
+      throw new BlankReturnMessageDto(
+        500,
+        'No available accounts',
+      ).toException();
+    }
+    const result = await account.lock.acquire(async () => {
+      account.occupyTimestamp = Date.now();
+      try {
+        return await account.account.sendMessage(question.text, {
+          ...(previousConversation
+            ? {
+                conversationId: previousConversation.conversationId,
+                parentMessageId: previousConversation.messageId,
+              }
+            : {}),
+          timeoutMs: 300000,
+        });
+      } catch (e) {
+        this.log(`ChatGPT API for ${account.email} failed: ${e.toString()}`);
+        return;
+      } finally {
+        account.occupyTimestamp = 0;
+      }
+    });
+    if (!result) {
+      return this.chat(question, [...failedAccounts, account.email]);
+    }
+    await this.conversationService.saveConversation(
       session,
+      result,
+      account.email,
     );
-    const result = await this.api.sendMessage(question.text, {
-      ...(previousConversation
-        ? {
-            conversationId: previousConversation.conversationId,
-            parentMessageId: previousConversation.messageId,
-          }
-        : {}),
-      timeoutMs: 300000,
-    });
-    await this.conversationService.saveConversation(session, result);
     const dto = new ConversationDto();
     dto.session = session;
-    dto.conversationId = result.conversationId;
-    dto.messageId = result.messageId;
     dto.text = result.response.replace(/^<!--(.*)-->$/gm, '');
     return dto;
   }

src/conversation/conversation.dto.ts

 import { CacheKey } from 'aragami';
 import { ApiProperty } from '@nestjs/swagger';
 
-export class ConversationDto {
+export class ConversationBase {
   @CacheKey()
   @ApiProperty({ description: 'Session identifier.' })
   session: string;
+}
+export class ConversationDto extends ConversationBase {
+  @ApiProperty({ description: 'Message from ChatGPT.' })
+  text: string;
+}
+
+export class ConversationStorage extends ConversationBase {
+  account: string;
 
-  @ApiProperty({ description: 'Conversation ID from ChatGPT.' })
   conversationId: string;
 
-  @ApiProperty({ description: 'Message ID from ChatGPT.' })
   messageId: string;
-
-  @ApiProperty({ description: 'Message from ChatGPT.' })
-  text: string;
 }

src/conversation/conversation.service.ts

 import { Injectable } from '@nestjs/common';
 import { InjectAragami } from 'nestjs-aragami';
 import { Aragami } from 'aragami';
-import { ConversationDto } from './conversation.dto';
+import { ConversationStorage } from './conversation.dto';
 import type { ChatResponse } from 'chatgpt3';
 
 @Injectable()
@@ -9,18 +9,23 @@ export class ConversationService {
   constructor(@InjectAragami() private readonly aragami: Aragami) {}
 
   async getConversation(session: string) {
-    return this.aragami.get(ConversationDto, session);
+    return this.aragami.get(ConversationStorage, session);
   }
 
-  async saveConversation(session: string, response: ChatResponse) {
-    return this.aragami.set(ConversationDto, {
+  async saveConversation(
+    session: string,
+    response: ChatResponse,
+    account: string,
+  ) {
+    return this.aragami.set(ConversationStorage, {
       session,
       conversationId: response.conversationId,
       messageId: response.messageId,
+      account,
     });
   }
 
   async resetConversation(session: string) {
-    return this.aragami.del(ConversationDto, session);
+    return this.aragami.del(ConversationStorage, session);
   }
 }

src/utility/config.ts

 import yaml from 'yaml';
 import * as fs from 'fs';
 
+export interface OpenAIAccount {
+  email: string;
+  password: string;
+  loginType: 'default' | 'google' | 'microsoft';
+  pro: boolean;
+}
+
 const defaultConfig = {
   host: '::',
   port: 3000,
-  OPENAI_EMAIL: '',
-  OPENAI_PASSWORD: '',
-  REDIS_URL: '',
-  OPENAI_LOGIN_TYPE: 'default',
-  OPENAI_PRO: false,
+  accounts: [] as OpenAIAccount[],
+  redisUrl: '',
+  token: '',
 };
 
 export type Config = typeof defaultConfig;