1 files changed, 80 insertions, 0 deletions
diff --git a/packages/backend/src/core/CreateSystemUserService.ts b/packages/backend/src/core/CreateSystemUserService.ts
new file mode 100644
index 0000000000..71f50d7cb3
--- /dev/null
+++ b/packages/backend/src/core/CreateSystemUserService.ts
@@ -0,0 +1,80 @@
+import { Inject, Injectable } from '@nestjs/common';
+import bcrypt from 'bcryptjs';
+import { v4 as uuid } from 'uuid';
+import { IsNull, DataSource } from 'typeorm';
+import { genRsaKeyPair } from '@/misc/gen-key-pair.js';
+import { User } from '@/models/entities/User.js';
+import { UserProfile } from '@/models/entities/UserProfile.js';
+import { IdService } from '@/core/IdService.js';
+import { UserKeypair } from '@/models/entities/UserKeypair.js';
+import { UsedUsername } from '@/models/entities/UsedUsername.js';
+import { DI } from '@/di-symbols.js';
+import generateNativeUserToken from '@/misc/generate-native-user-token.js';
+
+@Injectable()
+export class CreateSystemUserService {
+	constructor(
+		@Inject(DI.db)
+		private db: DataSource,
+
+		private idService: IdService,
+	) {
+	}
+
+	public async createSystemUser(username: string): Promise<User> {
+		const password = uuid();
+	
+		// Generate hash of password
+		const salt = await bcrypt.genSalt(8);
+		const hash = await bcrypt.hash(password, salt);
+	
+		// Generate secret
+		const secret = generateNativeUserToken();
+	
+		const keyPair = await genRsaKeyPair(4096);
+	
+		let account!: User;
+	
+		// Start transaction
+		await this.db.transaction(async transactionalEntityManager => {
+			const exist = await transactionalEntityManager.findOneBy(User, {
+				usernameLower: username.toLowerCase(),
+				host: IsNull(),
+			});
+	
+			if (exist) throw new Error('the user is already exists');
+	
+			account = await transactionalEntityManager.insert(User, {
+				id: this.idService.genId(),
+				createdAt: new Date(),
+				username: username,
+				usernameLower: username.toLowerCase(),
+				host: null,
+				token: secret,
+				isAdmin: false,
+				isLocked: true,
+				isExplorable: false,
+				isBot: true,
+			}).then(x => transactionalEntityManager.findOneByOrFail(User, x.identifiers[0]));
+	
+			await transactionalEntityManager.insert(UserKeypair, {
+				publicKey: keyPair.publicKey,
+				privateKey: keyPair.privateKey,
+				userId: account.id,
+			});
+	
+			await transactionalEntityManager.insert(UserProfile, {
+				userId: account.id,
+				autoAcceptFollowed: false,
+				password: hash,
+			});
+	
+			await transactionalEntityManager.insert(UsedUsername, {
+				createdAt: new Date(),
+				username: username.toLowerCase(),
+			});
+		});
+	
+		return account;
+	}
+}