auth.resolver.ts

import { Args, Mutation, Resolver } from '@nestjs/graphql';
import { LoginModel } from './models/login.model';
import { PrismaService } from '../prisma/prisma.service';
import { randomBytes } from 'crypto';
import { AgentFlags } from './models/agent.model';
import { UnauthorizedException } from '@nestjs/common';

@Resolver()
export class AuthResolver {
	constructor(private readonly prisma: PrismaService) {}

	@Mutation(() => LoginModel)
	async login(@Args('slug') slug: string) {
		const [group, agent] = await Promise.all([
			this.prisma.group.findFirst({
				where: { slug },
			}),
			this.prisma.agent.findFirst({
				where: { slug },
			}),
		]);

		let entityId, role;
		if (agent) {
			entityId = agent.id;
			if ((agent.flags & AgentFlags.ADMIN) === AgentFlags.ADMIN)
				role = 'admin';
			else role = 'agent';
		} else if (group) {
			entityId = group.id;
			role = 'group';
		} else {
			throw new UnauthorizedException('Invalid Login Slug');
		}

		return await this.prisma.accessToken.create({
			data: {
				entityId,
				role,
				authToken: randomBytes(36).toString('base64url'),
			},
		});
	}
}