feat(server): port resolvers to node server (#2026)

Co-authored-by: Himself65 <himself65@outlook.com>

apps/server/src/modules/auth/service.ts

@@ -0,0 +1,45 @@
+import {
+  BadRequestException,
+  Injectable,
+  UnauthorizedException,
+} from '@nestjs/common';
+import { User } from '@prisma/client';
+import jwt from 'jsonwebtoken';
+
+import { Config } from '../../config';
+import { PrismaService } from '../../prisma';
+
+type UserClaim = Pick<User, 'id' | 'name' | 'email'>;
+
+@Injectable()
+export class AuthService {
+  constructor(private config: Config, private prisma: PrismaService) {}
+
+  sign(user: UserClaim) {
+    return jwt.sign(user, this.config.secret);
+  }
+
+  verify(token: string) {
+    try {
+      const claims = jwt.verify(token, this.config.secret) as UserClaim;
+      return claims;
+    } catch (e) {
+      throw new UnauthorizedException('Invalid token');
+    }
+  }
+
+  async signIn(email: string, password: string) {
+    const user = await this.prisma.user.findFirst({
+      where: {
+        email,
+        password,
+      },
+    });
+
+    if (!user) {
+      throw new BadRequestException('Invalid email or password');
+    }
+
+    return user;
+  }
+}