sarlink-portal/lib/auth.ts

import { sendOtp } from "@/actions/auth-actions";
import { PrismaClient } from "@prisma/client";
import { betterAuth } from "better-auth";
import { prismaAdapter } from "better-auth/adapters/prisma";
import { phoneNumber } from "better-auth/plugins";

const prisma = new PrismaClient();
export const auth = betterAuth({
	trustedOrigins: process.env.BETTER_AUTH_TRUSTED_ORIGINS?.split(",") || [
		"localhost:3000",
	],
	user: {
		additionalFields: {
			role: {
				type: "string",
				required: false,
				defaultValue: "USER",
				input: false, // don't allow user to set role
			},
			lang: {
				type: "string",
				required: false,
				defaultValue: "en",
			},
		},
	},
	database: prismaAdapter(prisma, {
		provider: "sqlite", // or "mysql", "postgresql", ...etc
	}),
	plugins: [
		phoneNumber({
			sendOTP: async ({ phoneNumber, code }) => {
				// Implement sending OTP code via SMS
				console.log("Send OTP in auth.ts", phoneNumber, code);
				await sendOtp(phoneNumber, code);
			},
		}),
	],
});